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{{Shortcut|WP:AUCK4}}
{{Nanomat}}
'''Date:''' Saturday, 11 October 2008<br />
'''Time:''' 1 - 4 pm<br />
'''Location:''' - Galbraith's, Mt Eden Rd, Auckland


{{Meetup}}
[[Image:Types of Carbon Nanotubes.png|thumb|250px|3D model of three types of single-walled carbon nanotubes.]]


[[Image:Kohlenstoffnanoroehre Animation.gif|thumb|240px|This animation of a rotating carbon nanotube shows its 3D structure.]]


__TOC__
{{seealso|Graphene|Buckypaper}}


== Venue ==
'''Carbon nanotubes''' (CNTs) are [[allotropes of carbon]] with a nanostructure that can have a length-to-diameter ratio greater than 1,000,000. These cylindrical [[carbon]] [[molecule]]s have novel [[chemical property|properties]] that make them potentially useful in many applications in [[nanotechnology]], [[electronics]], [[optics]] and other fields of [[materials science]], as well as potential uses in [[architecture|architectural]] fields. They exhibit extraordinary strength and unique [[electricity|electrical]] properties, and are efficient [[heat conduction|conductors of heat]]. [[Inorganic nanotube]]s have also been synthesized.


* The Homepage is at [http://www.alehouse.co.nz/ www.alehouse.co.nz]
Nanotubes are members of the [[fullerene]] structural family, which also includes the spherical [[Buckyball#Buckminsterfullerene|buckyballs]]. The cylindrical nanotube usually has at least one end capped with a hemisphere of the buckyball structure. Their name is derived from their size, since the diameter of a nanotube is in the order of a few nanometers (approximately 1/50,000th of the width of a human hair), while they can be up to several millimeters in length (as of 2008). Nanotubes are categorized as [[#Single-walled|single-walled nanotubes]] (SWNTs) and [[#Multi-walled|multi-walled nanotubes]] (MWNTs).
* They are located at the very start of Mt Eden Rd, just after to breaks off (to the left) at the top of Symonds St.
* There is a carpark next door with some Galbraith's parking closest to the pub, get a ticket from the bar. It is also possible on Mt Eden Rd or nearby roads.
* We have booked a table in the sideroom. To get there go in the main doors until you reach the main room (with the bar), turn right and go though a door (indicating toilets), there is a medium sized room with 2 long tables, we have booked one of these.
* Booking is under the name of "Simon", Please call him on 027 408 9019 if you get lost.


== Future Meetups ==
The nature of the bonding of a nanotube is described by applied [[quantum chemistry]], specifically, [[orbital hybridization]]. The [[chemical bonding]] of nanotubes is composed entirely of [[sp² bond|sp<sup>2</sup> bonds]], similar to those of [[graphite]]. This bonding structure, which is stronger than the [[Orbital hybridisation#sp3 hybrids|sp<sup>3</sub> bonds]] found in [[diamond|diamonds]], provides the molecules with their unique strength. Nanotubes naturally align themselves into "ropes" held together by [[Van der Waals force]]s. Under high pressure, nanotubes can merge together, trading some sp² bonds for sp³ bonds, giving the possibility of producing strong, unlimited-length wires through high-pressure nanotube linking.
Please watchlist [[Wikipedia:Meetup/Auckland]] (which is very low traffic) to be informed of future meetups in Auckland or elsewhere in NZ, or [[Wikipedia:New Zealand Wikipedians' notice board]] for discussion relevant to New Zealand Wikipedians.


== Discovery ==
== People ==
{{seealso|Timeline of carbon nanotubes}}


===Attended===
A 2006 editorial written by Marc Monthioux and Vladimir Kuznetsov in the journal ''Carbon'' has described the interesting and often misstated origin of the carbon nanotube. A large percentage of academic and popular literature attributes the discovery of hollow, nanometer sized tubes composed of graphitic carbon to [[Sumio Iijima]] of [[NEC]] in 1991.<ref name="carbon">{{Cite journal | title = Who should be given the credit for the discovery of carbon nanotubes? | doi = 10.1016/j.carbon.2006.03.019 | first = Marc | last = Monthioux | coauthors = Kuznetsov, Vladimir L. | journal = Carbon | volume = 44 | year = 2006 | url = http://www.cemes.fr/fichpdf/GuestEditorial.pdf }}</ref>
<!-- On these lists, use a # instead of a *. It makes it numbered, and easy to count. -->
# [[User:SimonLyall|SimonLyall]]
# <font face="cursive" color="#808080">[[User talk:gadfium|gadfium]]</font>
# [[User:Richard001|Richard001]] ([[User talk:Richard001|talk]])
# [[User:Onco p53|Onco_p53]] ([[User talk:Onco p53|talk]])
# [[User:HowiAuckland|HowiAuckland]] ([[User talk:HowiAuckland|talk]])


=== Unable to come ===
In 1952 [[L. V. Radushkevich]] and [[V. M. Lukyanovich]] published clear images of 50 nanometer diameter tubes made of carbon in the Soviet ''Journal of Physical Chemistry''.<ref>{{lang|ru|{{ cite journal | last = Радушкевич | first = Л. В. | coauthors = Лукьянович, В. М. | year = 1952 | month = | title = О Структуре Углерода, Образующегося При Термическом Разложении Окиси Углерода На Железном Контакте | journal = Журнал Физической Химии | volume = 26 | issue = | pages = 88&ndash;95 | id = | url = http://carbon.phys.msu.ru/publications/1952-radushkevich-lukyanovich.pdf | quote = |format=PDF}}}}</ref> This discovery was largely unnoticed, as the article was published in the Russian language, and Western scientists' access to Soviet press was limited during the [[Cold War]]. It is likely that carbon nanotubes were produced before this date, but the invention of the [[transmission electron microscope]] allowed the direct visualization of these structures.
<!-- On these lists, use a # instead of a *. It makes it numbered, and easy to count. -->
# [[User:SamB135|SamB135]]
# [[User:DerbyCountyinNZ|DerbyCountyinNZ]]
# [[User:Nzhamstar|Nzhamstar]]
# [[User:Taifarious1|Taifarious1]]
# [[User:Ingolfson|Ingolfson]] ([[User talk:Ingolfson|talk]]) 03:31, 4 October 2008 (UTC) Sorry, too late, already have a meeting on that day.
# [[User:Ropata|Ropata]] ([[User talk:Ropata|talk]]) 08:33, 7 October 2008 (UTC)
# [[User:Nzpcmad|Nzpcmad]] ([[User talk:Nzpcmad|talk]]) Humble apologies - late cancellation.
# [[User:Geronimo20|Geronimo20]] ([[User talk:Geronimo20|talk]])


== Plans ==
Carbon nanotubes have been produced and observed under a variety of conditions prior to 1991. A paper by Oberlin, Endo, and Koyama published in 1976 clearly showed hollow carbon fibers with nanometer-scale diameters using a vapor-growth technique.<ref>{{Cite journal | title = Filamentous growth of carbon through benzene decomposition | doi = 10.1016/0022-0248(76)90115-9 | first = A. | last = Oberlin | coauthors = M. Endo, and T. Koyama, J. Cryst. Growth | month = March | year = 1976 | volume = 32 | pages = 335–349}}</ref> Additionally, the authors show a TEM image of a nanotube consisting of a single wall of graphene. Later, Endo has referred to this image as a single-walled nanotube.<ref>{{Citation | title = Carbon Fibers and Carbon Nanotubes (Interview, Nagano, Japan)| last = Endo | first = Morinobu | last2 = Dresselhaus | first2 = M. S. | date = October 26, 2002 | url = http://web.mit.edu/tinytech/Nanostructures/Spring2003/MDresselhaus/i789.pdf }}</ref>
=== Agenda ===
* [[New Zealand general election, 2008]] - What needs to be done.


=== Items to be brought ===
Furthermore, in 1979, John Abrahamson presented evidence of carbon nanotubes at the 14th Biennial Conference of Carbon at Penn State University. The conference paper described carbon nanotubes as carbon fibers which were produced on carbon anodes during arc discharge. A characterization of these fibers was given as well as hypotheses for their growth in a nitrogen atmosphere at low pressures.<ref>{{Citation | title = Structure of Carbon Fibers Found on Carbon Arc Anodes | journal = Carbon | volume = 37 | issue = 11 | year = 1999 | pages = 1873 | last = Abrahamson | first = John | last2 = Wiles | first2 = Peter G. | last3 = Rhoades | first3 = Brian L. | doi = 10.1016/S0008-6223(99)00199-2}}</ref>
Please put your username next to the item if you are bringing it
* Camera: [[User:SimonLyall|SimonLyall]]
* Printouts of the agenda
* [[Stinking badges|Badges]] : [[User:SimonLyall|SimonLyall]]
* Pens and paper : Bring your own
* ?


== Did you know? ==
In 1981 a group of Soviet scientists published the results of chemical and structural characterization of carbon nanoparticles produced by a thermocatalytical disproportionation of carbon monoxide. Using TEM images and XRD patterns, the authors suggested that their “carbon multi-layer tubular crystals” were formed by rolling graphene layers into cylinders. Additionally, they speculated that during rolling graphene layers into a cylinder, many different arrangements of graphene hexagonal nets are possible. They suggested two possibilities of such arrangements: circular arrangement ([[armchair nanotube]]) and a spiral, helical arrangement (chiral tube).<ref>Izvestiya Akademii Nauk SSSR, Metals. 1982, #3, p.12-17 [in Russian]</ref>
*…[[Wikipedia:WikiProject New Zealand]]


== Past Meetups ==
In 1987, Howard G. Tennent of Hyperion Catalysis was issued a U.S. patent for the production of "cylindrical discrete carbon fibrils" with a "constant diameter between about 3.5 and about 70&nbsp;nanometers…, length 10² times the diameter, and an outer region of multiple essentially continuous layers of ordered carbon atoms and a distinct inner core…."<ref>{{Ref patent | country = US | number = 4663230 | title = Carbon fibrils, method for producing same and compositions containing same | gdate = 1987-05-05 | fdate = 1984-12-06 | invent1 = Tennent, Howard G.}}</ref>
* [[Wikipedia:Meetup/Auckland 1]] - 26 June 2006
* [[Wikipedia:Meetup/Auckland 2]] - 10 February 2007
* [[Wikipedia:Meetup/Auckland 3]] - 11 August 2007


<!--
Iijima's discovery of carbon nanotubes in the insoluble material of arc-burned graphite rods<ref>{{Cite journal | first = Sumio | last = Iijima | title = Helical microtubules of graphitic carbon | journal = Nature | volume = 354 | year = 1991 | pages = 56–58 | doi = 10.1038/354056a0}}</ref> created the buzz that is now associated with carbon nanotubes. Nanotube research accelerated greatly following the independent discoveries<ref>{{cite journal | first=D. S. | last=Bethune | coauthors=et al. | title=Cobalt-catalyzed growth of carbon nanotubes with single-atomic-layer walls | url=http://www.nature.com/nature/journal/v363/n6430/abs/363605a0.html | journal=[[Nature (journal)]] | volume=363 | pages=605&ndash;607 | date=[[17 June]] [[1993]] | doi=10.1038/363605a0}}</ref><ref>{{Cite journal | first = Sumio | last = Iijima | year = 1993 | title = Single-shell carbon nanotubes of 1-nm diameter | journal = Nature | volume = 363 | pages = 603–605 | doi = 10.1038/363603a0}}</ref> by Bethune at IBM<ref>{{Cite web | title = The Discovery of Single-Wall Carbon Nanotubes at IBM | publisher = IBM | url = http://www.almaden.ibm.com/st/past_projects/nanotubes/ }}</ref> and Iijima at NEC of ''single-walled'' carbon nanotubes and methods to specifically produce them by adding transition-metal catalysts to the carbon in an arc discharge.
== Report ==
The arc discharge technique was well-known to produce the famed Buckminster fullerene on a preparative scale,<ref name="Kratschmer-C60">{{Cite journal | first = W. | last = Krätschmer | year = 1990 | title = Solid C60: a new form of carbon | journal = Nature | volume = 347 | pages = 354–358 | doi = 10.1038/347354a0}}</ref> and these results appeared to extend the run of accidental discoveries relating to fullerenes. The original observation of fullerenes in mass spectrometry was not anticipated,<ref>{{Cite journal | first = H. W. | last = Kroto | year = 1985 | title = C60: Buckminsterfullerene | doi = 10.1038/318162a0 | journal = Nature | volume = 318 | pages = 162–163}}</ref> and the first mass-production technique by Krätschmer and Huffman was used for several years before realizing that it produced fullerenes.<ref name="Kratschmer-C60" />


===Next meeting and Meetup timetables===
The discovery of nanotubes remains a contentious issue, especially because several scientists involved in the research could be likely candidates for the Nobel Prize. Many believe that Iijima's report in 1991 is of particular importance because it brought carbon nanotubes into the awareness of the scientific community as a whole. See the reference for a review of the history of the discovery of carbon nanotubes.<ref name="carbon" />
6 months felt to be a good interval, geo-notice seemed to work but realistically NZ should be treated as one unit since splitting further will not work well. Encourage other cities to hold meetings also. Discussion on use of meeting room venues (rather than pubs/cafes) as a quieter venue is required.


===Photographic evidence===
Similar to the matter of nanotube discovery, the question what is the thinnest carbon nanotube is a matter of debate. The possible candidates can be given as follows: Nanotubes of diameter about 0.40 nm have been reported in 2000 literary on the same page of the journal Nature; however, they are not free standing, but enclosed in zeolite crystals<ref>Li-Chang Qin et al. "Single-walled 4A carbon nanotube arrays" Nature 408 (2000) 50</ref> or are innermost shells of the multi-wall nanotubes.<ref>N. Wang et al. "The smallest carbon nanotube" Nature 408 (2000) 50</ref> Later, inner shells of MWNTs of only 0.3 nm in diameter have been reported.<ref>X. Zhao et al. "Smallest Carbon Nanotube is 3 A in diameter" Phys. Rev. Lett. 92 (2004) 125502</ref> The thinnest free-standing nanotube, by september 2008, has diameter of 0.43 nm.<ref>T. Hayashi et al. "Smallest Freestanding Single-Walled Carbon Nanotube" Nano letters 3 (2003) 887</ref>
<gallery>

Image:Meetup Auckland 3 - 1.jpg
== Types of carbon nanotubes and related structures ==
Image:Meetup Auckland 3 - 2.jpg
=== Single-walled ===
Image:Meetup Auckland 3 - 3.jpg

Image:Meetup Auckland 3 - 4.jpg
<gallery perrow="4">
Image:Meetup Auckland 3 - 5.jpg
image:Carbon_nanotube_armchair_povray.PNG | armchair (n, n)
Image:Meetup Auckland 3 - 6.jpg
image:Carbon_nanorim_armchair_povray.PNG | the chiral vector is bent, while the translation vector stays straight
image:Carbon_nanoribbon_povray.PNG | graphene nanoribbon
image:Carbon_nanorim_zigzag_povray.PNG | the chiral vector is bent, while the translation vector stays straight
image:Carbon_nanotube_zigzag_povray.PNG | zigzag (n,0)
image:Carbon_nanotube_chiral_povray.PNG | chiral (n, m)
image:Carbon_nanorim_chiral_povray.PNG | n and m can be counted at the end of the tube
image:Carbon_nanoribbon_chiral_povray.PNG | graphene nanoribbon
</gallery>
</gallery>


-->
[[Image:CNTnames.png|thumb|300px|The (''n'',''m'') nanotube naming scheme can be thought of as a vector ('''C'''<sub>h</sub>) in an infinite graphene sheet that describes how to "roll up" the graphene sheet to make the nanotube. '''T''' denotes the tube axis, and '''a'''<sub>1</sub> and '''a'''<sub>2</sub> are the unit vectors of graphene in real space.]]

Most single-walled nanotubes (SWNT) have a diameter of close to 1&nbsp;nanometer, with a tube length that can be many thousands of times longer. The structure of a SWNT can be conceptualized by wrapping a one-atom-thick layer of graphite called graphene into a seamless cylinder. The way the graphene sheet is wrapped is represented by a pair of indices (''n'',''m'') called the chiral vector. The integers ''n'' and ''m'' denote the number of unit [[Vector (geometric)|vector]]s along two directions in the honeycomb [[crystal lattice]] of graphene. If ''m''=0, the nanotubes are called "zigzag". If ''n''=''m'', the nanotubes are called "armchair". Otherwise, they are called "chiral".

Single-walled nanotubes are a very important variety of carbon nanotube because they exhibit important electric properties that are not shared by the multi-walled carbon nanotube (MWNT) variants. Single-walled nanotubes are the most likely candidate for miniaturizing electronics beyond the micro electromechanical scale that is currently the basis of modern electronics. The most basic building block of these systems is the electric wire, and SWNTs can be excellent conductors.<ref>{{Cite journal | last = Dekker | first = Cees | title = Carbon nanotubes as molecular quantum wires | month = May | year = 1999 | journal = Physics Today | volume = 52 | issue = 5 | pages = 22–28 | url = http://www.physicstoday.org/vol-56/iss-2/pdf/vol52no5p22-28.pdf | doi = 10.1063/1.882658}}</ref> One useful application of SWNTs is in the development of the first intramolecular [[field effect transistors]] (FETs). The production of the first intramolecular [[logic gate]] using SWNT FETs has recently become possible as well.<ref>{{Cite journal | title = Ambipolar Electrical Transport in Semiconducting Single-Wall Carbon Nanotubes | first = R. | last = Martel | coauthors = V. Derycke, C. Lavoie, J. Appenzeller, K. K. Chan, J. Tersoff, and Ph. Avouris | month = December | year = 2001 | journal = Physical Review Letters | volume = 87 | issue = 25 | url = http://prola.aps.org/abstract/PRL/v87/i25/e256805 }}</ref> To create a logic gate you must have both a p-FET and an n-FET. Because SWNTs are p-FETs when exposed to oxygen and n-FETs when unexposed to oxygen, it is possible to protect half of a SWNT from oxygen exposure, while exposing the other half to oxygen. This results in a single SWNT that acts as a NOT logic gate with both p and n-type FETs within the same molecule.

Single-walled nanotubes are still very expensive to produce, around $1500 per gram as of 2000, and the development of more affordable synthesis techniques is vital to the future of carbon nanotechnology. If cheaper means of synthesis cannot be discovered, it would make it financially impossible to apply this technology to commercial-scale applications.<ref name="nanotubes for electronics">{{Cite journal | first = Philip G. | last = Collins | coauthors = Phaedon Avouris | month = December | year = 2000 | title = Nanotubes for Electronics | journal = Scientific American | pages = 67, 68, and 69 | url = http://www.crhc.uiuc.edu/ece497nc/fall01/papers/NTs_SciAm_2000.pdf}}</ref> Several suppliers offer as-produced arc discharge SWNTs for ~$50–100 per gram as of 2007.<ref>{{Cite web | title = Carbon Solutions, Inc. | url = http://www.carbonsolution.com }}</ref><ref>{{Cite web | title = CarboLex | url = http://carbolex.com }}</ref>

=== Multi-walled ===

Multi-walled nanotubes (MWNT) consist of multiple layers of graphite rolled in on themselves to form a tube shape. There are two models which can be used to describe the structures of multi-walled nanotubes. In the ''[[Matryoshka doll|Russian Doll]]'' model, sheets of graphite are arranged in concentric cylinders, e.g. a (0,8) single-walled nanotube (SWNT) within a larger (0,10) single-walled nanotube. In the ''[[Scroll (parchment)|Parchment]]'' model, a single sheet of graphite is rolled in around itself, resembling a scroll of parchment or a rolled up newspaper. The interlayer distance in multi-walled nanotubes is close to the distance between graphene layers in graphite, approximately 3.3 Å (330 pm).

The special place of double-walled carbon nanotubes (DWNT) must be emphasized here because they combine very similar morphology and properties as compared to SWNT, while improving significantly their resistance to chemicals. This is especially important when functionalization is required (this means grafting of chemical functions at the surface of the nanotubes) to add new properties to the CNT. In the case of SWNT, covalent functionalization will break some C=C [[double bond]]s, leaving "holes" in the structure on the nanotube and thus modifying both its mechanical and electrical properties. In the case of DWNT, only the outer wall is modified. DWNT synthesis on the gram-scale was first proposed in 2003<ref>{{Cite journal | first = E. | last = Flahaut | coauthors = Bacsa R, Peigney A, Laurent C. | year = 2003 | title = Gram-Scale CCVD Synthesis of Double-Walled Carbon Nanotubes | journal = Chemical Communications | volume = 12 | pages = 1442–1443 | url = http://www.rsc.org/Publishing/Journals/CC/article.asp?doi=b301514a | doi = 10.1039/b301514a }}</ref> by the CCVD technique, from the selective reduction of oxides solid solutions in methane and hydrogen.

=== Fullerite ===

[[Fullerite]]s are the solid-state manifestation of fullerenes and related compounds and materials. Being highly [[Physical compression|incompressible]] nanotube forms, [[polymerized]] single-walled nanotubes (P-SWNT) are a class of fullerites and are comparable to diamond in terms of [[Hardness (materials science)|hardness]]. However, due to the way that nanotubes intertwine, P-SWNTs don't have the corresponding crystal lattice that makes it possible to cut diamonds neatly. This same structure results in a less [[brittle]] material, as any impact that the structure sustains is spread out throughout the material.

=== Torus ===

A nanotorus is a theoretically described carbon nanotube bent into a [[torus]] (doughnut shape). Nanotori have many unique properties, such as magnetic moments 1000 times larger than previously expected for certain specific radii.<ref name="nanotori">{{Cite journal | last = Liu | first = Lei | coauthors = Guo, G. Y.; Jayanthi, C. S.; and Wudate, S. Y. | title = Colossal Paramagnetic Moments in Metallic Carbon Nanotori | year = 2002 | journal = Physical Review Letters | volume = 88 | issue = 21 | url = http://prola.aps.org/abstract/PRL/v88/i21/e217206 }}</ref> Properties such as [[magnetic moment]], thermal stability, etc. vary widely depending on radius of the torus and radius of the tube.<ref name="nanotori" /><ref>{{Cite journal | title = Carbon nanotube structures: molecular dynamics simulation at realistic limit | journal = Computer Physics Communications | volume = 146 | year = 2002| first = Maria | last = Huhtala | coauthors = Kuronen, Antti; Kaski, Kimmo | url = http://www.princeton.edu/~msammalk/publications/cpc146_02.pdf }}</ref>

=== Nanobud ===

[[Image:NanoBud.JPG|thumb|right|250px|A stable [[Carbon nanobud|nanobud]] structure]] [[Carbon nanobud]]s are a newly discovered material combining two previously discovered allotropes of carbon: carbon nanotubes and fullerenes. In this new material fullerene-like "buds" are covalently bonded to the outer sidewalls of the underlying carbon nanotube. This hybrid material has useful properties of both fullerenes and carbon nanotubes. In particular, they have been found to be exceptionally good field emitters. In composite materials, the attached fullerene molecules may function as molecular anchors preventing slipping of the nanotubes, thus improving the composite’s mechanical properties.

===Nanoflower===
The first [[nanoflower]] was created in Japan and was actually the accidental outcome of an experiment on nanotubes.

== Properties ==
=== Strength ===

Carbon nanotubes are the strongest and stiffest materials on earth, in terms of [[tensile strength]] and [[elastic modulus]] respectively. This strength results from the covalent sp² bonds formed between the individual carbon atoms. In 2000, a multi-walled carbon nanotube was tested to have a tensile strength of 63&nbsp;[[Pascal (unit)|gigapascals]] (GPa). (This, for illustration, translates into ability to endure weight of 6300 kg on a cable with cross-section of 1 [[mm]]<sup>2</sup>.) Since carbon nanotubes have a low density for a solid of 1.3-1.4&nbsp;g•cm<sup>&minus;3</sup>,<ref name="nanotubes for electronics"/> its [[specific strength]] of up to 48,000&nbsp;kN•m•kg<sup>&minus;1</sup> is the best of known materials, compared to high-carbon steel's 154&nbsp;kN•m•kg<sup>&minus;1</sup>.

Under excessive tensile strain, the tubes will undergo [[Deformation|plastic deformation]], which means the deformation is permanent. This deformation begins at strains of approximately 5% and can increase the maximum strain the tube undergo before fracture by releasing strain energy.

CNTs are not nearly as strong under compression. Because of their hollow structure and high aspect ratio, they tend to undergo [[buckling]] when placed under compressive, torsional or bending stress.

{| style="font-size: 95%; margin: 1em auto 1em auto; text-align: left;" class="wikitable" border="0"
|+ Comparison of Mechanical Properties<ref>http://www.weizmann.ac.il/wagner/COURSES/Reading%20material%20(papers)/Encyclopedy_of_polymer_science_2003.pdf </ref><ref>[http://www.assda.asn.au/index.php Australian Stainless Steel Development Association (ASSDA) - Home]</ref><ref>{{Cite journal | title = Carbon nanotubes: physics and applications | first = S. | last = Belluci | journal = Phys. Stat. Sol. (c) | volume = 2(1):34-47 }}</ref><ref>{{Cite journal | title = Rigid Rod Polymeric Fibers | first = H.G. | last = Chae | coauthors = Kumar, S. | journal = Journal of Applied Polymer Science | volume = 100:791-802}}</ref><ref>{{Cite journal | title = Direct mechanical measurement of the tensile strength and elastic modulus of multiwalled carbon nanotubes | first = B.G. | last = Demczyk | coauthors = Wang Y.M., Cumings J., Hetman M., Han W., Zettl A., Ritchie R.O. | journal = Materials Science and Engineering a | volume = 334:173-178}}</ref><ref>{{Cite journal | title = Prediction of Young’s modulus of single wall carbon nanotubes by molecular-mechanics based finite element modelling | first = M. | last = Meo | coauthors = Rossi M. | journal = Composites Science and Technology | volume = 66:1597-1605}}</ref><ref>{{Cite journal | title = Carbon Nanotubes: Synthesis, Properties, and Applications | first = S.B. | last = Meo | coauthors = Andrews R. | journal = Crit. Rev. Solid State Mater. Sci. | volume = 26(3):145-249}}</ref>
|-
! Material
! [[Young's Modulus]] (TPa)
! Tensile Strength (GPa)
! Elongation at Break (%)
|-
| SWNT
| align="center"| '''~'''1 (from 1 to 5)
| align="center"| 13-53<sup>E</sup>
| align="center"| 16
|-
| Armchair SWNT
| align="center"| 0.94<sup>T</sup>
| align="center"| 126.2<sup>T</sup>
| align="center"| 23.1
|-
| Zigzag SWNT
| align="center"| 0.94<sup>T</sup>
| align="center"| 94.5<sup>T</sup>
| align="center"| 15.6-17.5
|-
| Chiral SWNT
| align="center"| 0.92
|
|
|-
| MWNT
| align="center"| 0.8-0.9<sup>E</sup>
| align="center"| 150
|
|-
| [[Stainless Steel]]
| align="center"| '''~'''0.2
| align="center"| '''~'''0.65-1
| align="center"| 15-50
|-
| [[Kevlar]]
| align="center"| '''~'''0.15
| align="center"| '''~'''3.5
| align="center"| '''~'''2
|-
| Kevlar<sup>T</sup>
| align="center"| 0.25
| align="center"| 29.6
|
|}

<sup>E</sup>Experimental observation

<sup>T</sup>Theoretical prediction

The above discussion referred to axial properties of the nanotube, whereas simple geometrical considerations suggest that carbon nanotubes should be much softer in the radial direction then along the tube axis. Indeed, [[TEM]] observation of radial elasticity suggested that even the van der Waals forces can deform two adjacent nanotubes<ref>R. S. Ruoff, et al., Nature 364, 514 (1993)</ref>. Nanoindentation experiments, performed by several groups on multiwalled carbon nanotubes, <ref>I. Palaci, et al., PRL 94, 175502 (2005) </ref>, <ref>M.-F. Yu, et al.,PRL 85, 1456-1459 (2000) </ref> indicated Young's modulus of the order of several GPa confirming that CNTs are indeed rather soft in the radial direction.

=== Kinetic ===

Multi-walled nanotubes, multiple concentric nanotubes precisely nested within one another, exhibit a striking telescoping property whereby an inner nanotube core may slide, almost without friction, within its outer nanotube shell thus creating an atomically perfect linear or rotational bearing.
This is one of the first true examples of [[molecular nanotechnology]], the precise positioning of atoms to create useful machines. Already this property has been utilized to create the world's smallest rotational [[Synthetic molecular motors|motor]]<ref>[http://www.berkeley.edu/news/media/releases/2003/07/23_motor.shtml 07.23.2003 - Physicists build world's smallest motor using nanotubes and etched silicon]</ref>.
Future applications such as a gigahertz mechanical oscillator are also envisaged.

=== Electrical ===

Because of the symmetry and unique electronic structure of graphene, the structure of a nanotube strongly affects its electrical properties. For a given (''n'',''m'') nanotube, if ''n'' − ''m'' is a multiple of 3, then the nanotube is [[metallic]], otherwise the nanotube is a [[semiconductor]]. Thus all armchair (''n''=''m'') nanotubes are metallic, and nanotubes (5,0), (6,4), (9,1), etc. are semiconducting. In theory, metallic nanotubes can have an electrical current density more than 1,000 times greater than metals such as [[silver]] and [[copper]].

=== Thermal ===

All nanotubes are expected to be very good [[thermal conductor]]s along the tube, exhibiting a property known as "[[ballistic conduction]]," but good insulators laterally to the tube axis. It is predicted that carbon nanotubes will be able to transmit up to 6000 [[watt]]s per meter per [[Kelvin]] at room temperature; compare this to copper, a metal well-known for its good [[thermal conductivity]], which only transmits 385 W•m<sup>&minus;1</sup>•K<sup>&minus;1</sup>. The temperature stability of carbon nanotubes is estimated to be up to 2800 degrees Celsius in [[vacuum]] and about 750 degrees Celsius in air.

=== Defects ===

As with any material, the existence of defects affects the material properties. Defects can occur in the form of atomic vacancies. High levels of such defects can lower the tensile strength by up to 85%. Another form of defect that may occur in carbon nanotubes is known as the [[Stone Wales defect]], which creates a pentagon and heptagon pair by rearrangement of the bonds. Because of the very small structure of CNTs, the tensile strength of the tube is dependent on the weakest segment of it in a similar manner to a chain, where a defect in a single link diminishes the strength of the entire chain.

The tube's electrical properties are also affected by the presence of defects. A common result is the lowered conductivity through the defective region of the tube. Some defect formation in armchair-type tubes (which can conduct electricity) can cause the region surrounding that defect to become semiconducting. Furthermore single monoatomic vacancies induce magnetic properties.

The tube's thermal properties are heavily affected by defects. Such defects lead to [[phonon]] scattering, which in turn increases the relaxation rate of the phonons. This reduces the [[mean free path]], and reduces the thermal conductivity of nanotube structures. Phonon transport simulations indicate that substitutional defects such as nitrogen or boron will primarily lead to scattering of high frequency optical phonons. However, larger scale defects such as [[Stone Wales defect]]s cause phonon scattering over a wide range of frequencies, leading to a greater reduction in thermal conductivity<ref>{{Cite journal | first = N. | last = Mingo | coauthors = Stewart, D. A.; Broido, D. A.; and Srivasta, D. | year = 2008 | title = Phonon transmission through defects in carbon nanotubes from first principles | journal = Physical Review B | volume = 77 | pages = 033418 | url = http://link.aps.org/abstract/PRB/v77/e033418 | doi = 10.1103/PhysRevB.77.033418}}</ref>.

=== One-Dimensional Transport ===

Due to their nanoscale dimensions, electron transport in carbon nanotubes will take place through quantum effects and will only propagate along the axis of the tube. Because of this special transport property, carbon nanotubes are frequently referred to as “one-dimensional” in scientific articles.

=== Toxicity ===
Determining the toxicity of carbon nanotubes has been one of the most pressing questions in Nanotechnology. Unfortunately such research has only just begun and the data are still fragmentary and subject to criticisms. Preliminary results highlight the difficulties in evaluating the toxicity of this heterogeneous material. Parameters such as structure, size [[distribution]], [[surface area]], surface chemistry, [[surface charge]], and [[agglomeration]] state as well as purity of the samples, have considerable impact on the [[reactivity]] of carbon nanotubes. However, available data clearly show that, under some conditions, nanotubes can cross the membrane barriers and suggests that if raw materials reach the organs they can induce harmful effects as inflammatory and fibrotic reactions.<ref name="tox1">{{Cite journal | last = Porter | first = Alexandra | title = Toxicity studies of carbon nanotubes. | journal = Advances in experimental medicine and biology | year = 2007 | volume = 620 | url = http://www.ncbi.nlm.nih.gov/pubmed/18217344?ordinalpos=5&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_DefaultReportPanel.Pubmed_RVDocSum}}</ref>

A study led by Alexandra Porter from the [[University of Cambridge]] shows that CNTs can enter human cells and once inside accumulate in the [[cytoplasm]] and cause cell death.<ref name="tox2">{{Cite journal | last = Porter | first = Alexandra | title = Direct imaging of single-walled carbon nanotubes in cells | journal = Nature Nanotechnology | month = November | year = 2007 | volume = 2 | issue = 11 | pages = 713–717 | url = http://www.nature.com/nnano/journal/v2/n11/abs/nnano.2007.347.html | doi = 10.1038/nnano.2007.347 }}</ref>

Results of rodent studies collectively show that regardless of the process by which CNTs were synthesized and the types and amounts of metals they contained, CNTs were capable of producing [[inflammation]], [[Granuloma|epithelioid granulomas]] (microscopic nodules), [[fibrosis]], and biochemical/toxicological changes in the lungs. Comparative toxicity studies in which mice were given equal weights of test materials showed that SWCNTs were more toxic than [[quartz]], which is considered a serious occupational health hazard if it is chronically inhaled. As a control ultrafine [[carbon black]] was shown to produce minimal lung responses.<ref name="tox3">{{Cite journal | last = Lam | first = CW | title = A review of carbon nanotube toxicity and assessment of potential occupational and environmental health risks. | journal = Critical reviews in toxicology | month = March | year = 2006 | volume = 36 | issue = 3 | pages = 189–217 | url = http://www.ncbi.nlm.nih.gov/pubmed/16686422?ordinalpos=1&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVBrief}}</ref>

The needle-like fiber shape of CNTs, similar to asbestos fibers, rises fears that widespread use of carbon nanotubes may lead to mesothelioma, cancer of the lining of the lungs caused by exposure to asbestos. A recently published pilot study supports this prediction. Scientists exposed the [[mesothelial]] [[lining]] of the body cavity of mice, as a surrogate for the mesothelial lining of the chest cavity, to long multiwalled carbon nanotubes and observed asbestos-like, length-dependent, pathogenic behavior which included inflammation and formation of lesions known as [[granulomas]].
Authors of the study conclude that
:"This is of considerable importance, because research and business communities continue to invest heavily in carbon nanotubes for a wide range of products under the assumption that they are no more hazardous than graphite. Our results suggest the need for further research and great caution before introducing such products into the market if long-term harm is to be avoided."<ref name="tox5">{{Cite journal | last = Poland | first = CA | title = Carbon nanotubes introduced into the abdominal cavity of mice show asbestos-like pathogenicity in a pilot study. | journal = Nature Nanotechnology | month = Jul | year = 2008 | volume = 3 | issue = 7 | pages = 423–428 | url = http://www.nature.com/nnano/journal/v3/n7/abs/nnano.2008.111.html}}</ref>

'''Although further research is required, results presented today clearly demonstrate that, under certain conditions, especially those involving chronic exposure, carbon nanotubes can pose a serious risk to human health.'''<ref name="tox1"/><ref name="tox2"/><ref name="tox3"/><ref name="tox5"/>

== Synthesis ==

Techniques have been developed to produce nanotubes in sizeable quantities, including [[Electric arc|arc discharge]], [[laser ablation]], high pressure carbon monoxide ([[HiPCO]]), and [[chemical vapor deposition]] (CVD). Most of these processes take place in vacuum or with process gases. CVD growth of CNTs can take place in vacuum or at atmospheric pressure. Large quantities of nanotubes can be synthesized by these methods; advances in catalysis and continuous growth processes are making CNTs more commercially viable.

=== Arc discharge ===

Nanotubes were observed in 1991 in the carbon soot of graphite [[electrode]]s during an arc discharge, by using a current of 100 [[ampere|amps]], that was intended to produce fullerenes.<ref>{{Cite journal | first = Sumio | last = Iijima | year = 1991 | title = Helical microtubules of graphitic carbon | journal = Nature | volume = 354 | pages = 56–58 | url = http://www.nature.com/nature/journal/v354/n6348/abs/354056a0.html | doi = 10.1038/354056a0 }}</ref> However the first [[macroscopic]] production of carbon nanotubes was made in 1992 by two researchers at NEC's Fundamental Research Laboratory.<ref>{{Cite journal | first = T. W. | last = Ebbesen | coauthors = Ajayan, P. M. | year = 1992 | title = Large-scale synthesis of carbon nanotubes | journal = Nature | volume = 358 | pages = 220–222 | url = http://www.nature.com/nature/journal/v358/n6383/abs/358220a0.html | doi = 10.1038/358220a0 }}</ref> The method used was the same as in 1991. During this process, the carbon contained in the negative electrode sublimates because of the high temperatures caused by the discharge. Because nanotubes were initially discovered using this technique, it has been the most widely used method of nanotube synthesis.

The yield for this method is up to 30 percent by weight and it produces both single- and multi-walled nanotubes with lengths of up to 50 micrometers.<ref name="nanotubes for electronics" />

=== Laser ablation ===

In the laser ablation process, a [[pulsed laser]] vaporizes a graphite target in a high temperature reactor while an inert gas is bled into the chamber. The nanotubes develop on the cooler surfaces of the reactor, as the vaporized carbon condenses. A water-cooled surface may be included in the system to collect the nanotubes.

It was invented by [[Richard Smalley]] and co-workers at [[Rice University]], who at the time of the discovery of carbon nanotubes, were blasting metals with the laser to produce various metal molecules. When they heard of the discovery they substituted the metals with graphite to create multi-walled carbon nanotubes.<ref>{{Cite journal | last = Guo | first = Ting | title = Self-Assembly of Tubular Fullerenes | year = 1995 | journal = J. Phys. Chem. | volume = 99 | pages = 10694–10697 | url = http://pubs.acs.org/cgi-bin/abstract.cgi/jpchax/1995/99/i27/f-pdf/f_j100027a002.pdf?sessid=6006l3 | doi = 10.1021/j100027a002}}</ref> Later that year the team used a composite of graphite and metal catalyst particles (the best yield was from a [[cobalt]] and [[nickel]] mixture) to synthesize single-walled carbon nanotubes.<ref>{{Cite journal | last = Guo | first = Ting | title = Catalytic growth of single-walled nanotubes by laser vaporization | journal = Chem. Phys. Lett. | year = 1995 | volume = 243 | pages = 49–54 | url = http://www.orgchem.science.ru.nl/molmat/mm-web/education/caput-college/ChemPhysLett-1995-243-49.pdf | doi = 10.1016/0009-2614(95)00825-O}}</ref>

This method has a yield of around 70% and produces primarily single-walled carbon nanotubes with a controllable diameter determined by the reaction [[temperature]]. However, it is more expensive than either arc discharge or chemical vapor deposition.<ref name="nanotubes for electronics" />

=== Chemical vapor deposition (CVD) ===

[[Image:PICT0111.JPG|thumb|Nanotubes being grown by plasma enhanced [[chemical vapor deposition]]]]

The catalytic vapor phase deposition of carbon was first reported in 1959,<ref>{{Cite journal | first = P. L. | last = Walker Jr. | journal = J. Phys. Chem. | volume = 63 | pages = 133 | year = 1959 | title = Carbon Formation from Carbon Monoxide-Hydrogen Mixtures over Iron Catalysts. I. Properties of Carbon Formed | url = http://pubs.acs.org/cgi-bin/abstract.cgi/jpchax/1959/63/i02/f-pdf/f_j150572a002.pdf?sessid=6006l3 | doi = 10.1021/j150572a002}}</ref> but it was not until 1993<ref>{{Cite journal | first = M. | last = José-Yacamán | title = Catalytic growth of carbon microtubules with fullerene structure | journal = Appl. Phys. Lett. | volume = 62 | pages = 657 | year = 1993 | url = http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=APPLAB000062000006000657000001&idtype=cvips&gifs=yes | doi = 10.1063/1.108857}}</ref> that carbon nanotubes could be formed by this process. In 2007, researchers at the [[University of Cincinnati]] (UC) developed a process to grow 18 mm long aligned carbon nanotube arrays on a FirstNano ET3000 carbon nanotube growth system.<ref>{{Cite news | title = UC Researchers Shatter World Records with Length of Carbon Nanotube Arrays | date = 2007-04-27 | last = Beckman | first = Wendy | publisher = University of Cincinnati | url = http://www.uc.edu/news/NR.asp?id=5700}}</ref>

During CVD, a substrate is prepared with a layer of metal catalyst particles, most commonly nickel, cobalt, [[iron]], or a combination. The metal nanoparticles can also be produced by other ways, including reduction of oxides or oxides solid solutions. The diameters of the nanotubes that are to be grown are related to the size of the metal particles. This can be controlled by patterned (or masked) deposition of the metal, annealing, or by plasma etching of a metal layer. The substrate is heated to approximately 700°C. To initiate the growth of nanotubes, two gases are bled into the reactor: a process gas (such as [[ammonia]], [[nitrogen]], [[hydrogen]], etc.) and a carbon-containing gas (such as [[acetylene]], [[ethylene]], [[ethanol]], [[methane]], etc.). Nanotubes grow at the sites of the metal catalyst; the carbon-containing gas is broken apart at the surface of the catalyst particle, and the carbon is transported to the edges of the particle, where it forms the nanotubes. This mechanism is still under discussion. The catalyst particles can stay at the tips of the growing nanotube during the growth process, or remain at the nanotube base, depending on the adhesion between the catalyst particle and the substrate.

CVD is a common method for the commercial production of carbon nanotubes. For this purpose, the metal nanoparticles will be carefully mixed with a catalyst support (e.g., MgO, Al2O3, etc) to increase the specific surface area for higher yield of the catalytic reaction of the carbon feedstock with the metal particles. One issue in this synthesis route is the removal of the catalyst support via an acid treatment, which sometimes could destroy the original structure of the carbon nanotubes. However, alternative catalyst supports that are soluble in water have been shown to be effective for nanotube growth.<ref>{{Cite journal | first = A. | last = Eftekhari | coauthors = Jafarkhani, Parvaneh; Moztarzadeh, Fathollah | title = High-yield synthesis of carbon nanotubes using a water-soluble catalyst support in catalytic chemical vapor deposition | doi = 10.1016/j.carbon.2005.12.006 | journal = Carbon | volume = 44 | pages = 1343 | year = 2006 | url = http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TWD-4J0NY78-6&_user=10&_coverDate=06%2F30%2F2006&_rdoc=39&_fmt=summary&_orig=browse&_srch=doc-info(%23toc%235560%232006%23999559992%23618829%23FLA%23display%23Volume)&_cdi=5560&_sort=d&_docanchor=&view=c&_ct=47&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=5931efe541d32e5529d787bce8405279}}</ref>

If a [[plasma (physics)|plasma]] is generated by the application of a strong electric field during the growth process (plasma enhanced chemical vapor deposition*), then the nanotube growth will follow the direction of the electric field.<ref>{{Cite journal | first = Z. F. | last = Ren | title = Synthesis of Large Arrays of Well-Aligned Carbon Nanotubes on Glass | journal = Science | volume = 282 | pages = 1105 | year = 1998 | url = http://www.sciencemag.org/cgi/content/abstract/282/5391/1105 | doi = 10.1126/science.282.5391.1105 | pmid = 9804545}}</ref> By properly adjusting the geometry of the reactor it is possible to synthesize vertically aligned carbon nanotubes<ref>[http://www.nano-lab.com/imagegallery.html SEM images & TEM images of carbon nanotubes, aligned carbon nanotube arrays, and nanoparticles]</ref> (i.e., perpendicular to the substrate), a morphology that has been of interest to researchers interested in the electron emission from nanotubes. Without the plasma, the resulting nanotubes are often randomly oriented. Under certain reaction conditions, even in the absence of a plasma, closely spaced nanotubes will maintain a vertical growth direction resulting in a dense array of tubes resembling a carpet or forest.

Of the various means for nanotube synthesis, CVD shows the most promise for industrial scale deposition in terms of its price/unit ratio. There are additional advantages to the CVD synthesis of nanotubes. Unlike the above methods, CVD is capable of growing nanotubes directly on a desired substrate, whereas the nanotubes must be collected in the other growth techniques. The growth sites are controllable by careful deposition of the catalyst. Additionally, no other growth methods have been developed to produce vertically aligned nanotubes.<ref name="nanotubes for electronics" />
In 2007, a team from [[Meijo University]] has shown a high-efficiency CVD technique for growing carbon nanotubes from [[camphor]]. <ref>{{Cite web | title = Carbon Nanotubes from Camphor: An Environment-Friendly Nanotechnology | publisher = Journal of Physics | url = http://www.iop.org/EJ/article/1742-6596/61/1/129/jpconf7_61_129.pdf }}</ref> A team of researchers at Rice University, until recently led by the late Dr. Richard Smalley, has concentrated upon finding methods to produce large, pure amounts of particular types of nanotubes. Their approach grows long fibers from many small seeds cut from a single nanotube; all of the resulting fibers were found to be of the same diameter as the original nanotube and are expected to be of the same type as the original nanotube. Further characterization of the resulting nanotubes and improvements in yield and length of grown tubes are needed.<ref>{{Cite news | first = Jade | last = Boyd | title = Rice chemists create, grow nanotube seeds | publisher = Rice University | date = 2006-11-17 | url = http://www.media.rice.edu/media/NewsBot.asp?MODE=VIEW&ID=9070}}</ref>

CVD growth of multi-walled nanotubes is used by several companies to produce materials on the ton scale, including NanoLab<ref>[http://www.nano-lab.com NanoLab multiwalled carbon nanotubes, aligned carbon nanotube arrays, nanoparticles, nanotube paper,dispersant, nanowires]</ref>, [[Bayer]], [[Arkema]], [[Nanocyl]], [[Nanothinx]],<ref>[http://www.nanothinx.com Nanothinx: Nanotubes, Nanomaterials, and Nanotechnology R&D (Products)]</ref> [[Hyperion Catalysis]], [[Mitsui]], and [[Showa Denko]].

=== Natural, incidental, and controlled flame environments ===

[[Fullerene]]s and carbon nanotubes are not necessarily products of high-tech laboratories; they are commonly formed in such mundane places as ordinary [[flame]]s,<ref>{{Cite journal | first = J.M. | last = Singer | coauthors = Grumer, J. | title = Carbon formation in very rich hydrocarbon-air flames. I. Studies of chemical content, temperature, ionization and particulate matter | journal = Seventh Symposium (International) on Combustion | year = 1959}}</ref> produced by burning methane,<ref>{{cite journal | last = Yuan | first = Liming | coauthors = Kozo Saito, Chunxu Pan, F.A. Williams, and A.S. Gordon | year = 2001 | title = Nanotubes from methane flames | journal = Chemical physics letters | volume = 340 | pages = 237–241 | doi = 10.1016/S0009-2614(01)00435-3}}</ref> ethylene,<ref>{{cite journal | last = Yuan | first = Liming | coauthors = Kozo Saito, Wenchong Hu, and Zhi Chen | year = 2001 | title = Ethylene flame synthesis of well-aligned multi-walled carbon nanotubes | journal = Chemical physics letters | volume = 346 | pages = 23–28 | doi = 10.1016/S0009-2614(01)00959-9}}</ref> and benzene,<ref>{{cite journal | last = Duan | first = H. M. | coauthors = and J. T. McKinnon | year = 1994 | title = Nanoclusters Produced in Flames | journal = Journal of Physical Chemistry | volume = 98 | issue = 49 | pages = 12815–12818|doi = 10.1021/j100100a001}}</ref> and they have been found in [[soot]] from both indoor and outdoor air.<ref>{{cite journal | last = Murr | first = L. E. | coauthors = J.J. Bang, E.V. Esquivel, P.A. Guerrero, and D.A. Lopez | year = 2004 | title = Carbon nanotubes, nanocrystal forms, and complex nanoparticle aggregates in common fuel-gas combustion sources and the ambient air | journal = Journal of Nanoparticle Research | volume = 6 | pages = 241–251 | doi = 10.1023/B:NANO.0000034651.91325.40}}</ref> However, these naturally occurring varieties can be highly irregular in size and quality because the environment in which they are produced is often highly uncontrolled. Thus, although they can be used in some applications, they can lack in the high degree of uniformity necessary to meet many needs of both research and industry. Recent efforts have focused on producing more uniform carbon nanotubes in controlled flame environments.<ref>{{Cite journal | first = R.L. | last = Vander Wal | title = Fe-catalyzed single-walled carbon nanotube synthesis within a flame environment | journal = Combust. Flame | volume = 130 | pages = 37–47 | year = 2002 | url = http://www.sciencedirect.com/science?_ob=ArticleListURL&_method=list&_ArticleListID=606510068&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=a0242dce240328974b1dac354fb952b0 | doi = 10.1016/S0010-2180(02)00360-7}}</ref><ref>{{Cite journal | first = A.V. | last = Saveliev | coauthors = Merchan-Merchan, W.; Kennedy, L.A. | title = Metal catalyzed synthesis of carbon nanostructures in an opposed flow methane oxygen flame | doi = 10.1016/S0010-2180(03)00142-1 | journal = Combust. Flame | volume = 135 | pages = 27–33 | year = 2003 | url = http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V2B-497H585-1&_user=10&_coverDate=10%2F31%2F2003&_alid=606511011&_rdoc=1&_fmt=summary&_orig=search&_cdi=5698&_sort=d&_docanchor=&view=c&_ct=1&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=c7f6303f34818a739a006a412c75ae38}}</ref><ref>{{Cite journal | first = M.J. | last = Height | coauthors = Howard, J.B.; Tester, J.W.; Vander Sande, J.B. | title = Flame synthesis of single-walled carbon nanotubes | doi = 10.1016/j.carbon.2004.05.010 | journal = Carbon | volume = 42 | pages = 2295–2307 | year = 2004 }}</ref><ref>{{Cite journal | first = S. | last = Sen | coauthors = Puri, I.K. | title = Flame synthesis of carbon nanofibers and nanofibers composites containing encapsulated metal particles | journal = Nanotechnology | volume = 15 | pages = 264–268 | year = 2004 | url = http://www.iop.org/EJ/abstract/0957-4484/15/3/005 | doi = 10.1088/0957-4484/15/3/005 }}</ref> [http://www.nano-c.com/ Nano-C, Inc] of Westwood, Massachusetts, is producing flame synthesized single-walled carbon nanotubes. This method has promise for large scale, low cost nanotube synthesis, though it must compete with rapidly developing large scale CVD production.

== Potential and current applications ==
{{main|Potential applications of carbon nanotubes}}

: ''See also, for last current applications: [[Timeline of carbon nanotubes]]''

[[Image:Louie nanotube.jpg|thumb||330px|The joining of two carbon nanotubes with different electrical properties to form a [[diode]] has been proposed.]]

The strength and flexibility of carbon nanotubes makes them of potential use in controlling other nanoscale structures, which suggests they will have an important role in [[nanotechnology]] engineering. The highest tensile strength an individual multi-walled carbon nanotube has been tested to be is 63&nbsp;[[GPa]].<ref>{{Cite journal | first = Min-Feng | last = Yu | year = 2000 | title = Strength and Breaking Mechanism of Multiwalled Carbon Nanotubes Under Tensile Load | doi = 10.1126/science.287.5453.637 | journal = Science | volume = 287 | pages = 637–640}}</ref>

A 2006 study published in ''[[Nature (journal)|Nature]]'' determined that some carbon nanotubes are present in [[Damascus steel]], possibly helping to account for the legendary strength of the (almost ancient) swords made of it.<ref>{{Cite news | title = Legendary Swords' Sharpness, Strength From Nanotubes, Study Says | date = 2006-11-16 | first = Mason | last = Inman | publisher = National Geographic News | url = http://news.nationalgeographic.com/news/2006/11/061116-nanotech-swords.html}}</ref><ref>{{Cite news | title = Secret's out for Saracen sabres | publisher = New Scientist | date = 2006-11-15 | url = http://www.newscientisttech.com/channel/tech/nanotechnology/mg19225780.151}}</ref>

=== Structural ===

Because of the great mechanical properties of the carbon nanotubule, a variety of structures have been proposed ranging from everyday items like clothes and sports gear to combat jackets and [[space elevator]]s.<ref>{{Cite book | title = The Space Elevator | first = Brad C. | last = Edwards | publisher = BC Edwards | month = November | year = 2003 | isbn = 0974651710}}</ref> However, the [[space elevator]] will require further efforts in refining carbon nanotube technology, as the practical tensile strength of carbon nanotubes can still be greatly improved.<ref name="nanotubes for electronics" />

For perspective, outstanding breakthroughs have already been made. Pioneering work lead by Ray H. Baughman at the NanoTech Institute has shown that single and multi-walled nanotubes can produce materials with toughness un-matched in the man-made and natural worlds.<ref>{{Cite journal | last = Zhang | first = Mei | title = Strong, Transparent, Multifunctional, Carbon Nanotube Sheets | journal = Science | year = 2005 | volume = 309 | issue = 5738 | pages = 1215–1219 | url = http://www.sciencemag.org/cgi/content/abstract/309/5738/1215 | doi = 10.1126/science.1115311 | pmid = 16109875}}</ref> <ref>{{Cite journal | last = Dalton | first = Alan B. | title = Super-tough carbon-nanotube fibres | doi = 10.1038/ni1569 | journal = Nature | year = 2003 | volume = 423 | issue = 6941 | pages = 703 | url = http://www.nature.com/}}</ref>

Recent research by James D. Iverson and Brad C. Edwards has revealed the possibility of cross-linking CNT molecules prior to incorporation in a polymer matrix to form a super high strength composite material. This CNT composite could have a tensile strength on the order of 20 million psi (138 GPa, for 106 MN•m•kg<sup>&minus;1</sup>), potentially revolutionizing many aspects of engineering design where low weight and high strength is required.{{Fact|date=June 2007}}

=== In electrical circuits ===

Carbon nanotubes have many properties—from their unique dimensions to an unusual current [[electrical conduction|conduction]] mechanism—that make them ideal components of electrical circuits. For example, they have shown to exhibit strong electron-phonon resonances, which indicate that under certain direct current (dc) bias and doping conditions their current and the average electron velocity, as well as the electron concentration on the tube oscillate
at terahertz frequencies<ref>{{Cite journal | last = Akturk | first = A. | title = Terahertz current oscillations in single-walled zigzag carbon nanotubes | journal = Physical Review Letters | year = 2007 | volume = 98 | pages = 166803 | url = http://link.aps.org/abstract/PRL/v98/e166803 | doi = 10.1103/PhysRevLett.98.166803}}</ref>. These resonances can be used to make terahertz sources or sensors.

Nanotube based [[transistor]]s have been made that operate at room temperature and that are capable of digital switching using a single electron.<ref>{{Cite journal | last = Postma | first = Henk W. Ch. | coauthors = Teepen, Tijs; Yao, Zhen; Grifoni, Milena; Dekker, Cees | year = 2001 | title = Carbon Nanotube Single-Electron Transistors at Room Temperature | journal = Science | volume = 293 | issue = 5527 | url = http://www.sciencemag.org/cgi/content/abstract/293/5527/76 | doi = 10.1126/science.1061797 | pmid = 11441175}}</ref>

One major obstacle to realization of nanotubes has been the lack of technology for mass production. However, in 2001 IBM researchers demonstrated how nanotube transistors can be grown in bulk, not very differently from silicon transistors. The process they used is called "constructive destruction" which includes the automatic destruction of defective nanotubes on the [[wafer (electronics)|wafer]].<ref>{{Cite journal | first = Philip G. | last = Collins | coauthors = Arnold, Michael S.; Avouris, Phaedon | title = Engineering Carbon Nanotubes and Nanotube Circuits Using Electrical Breakdown | journal = Science | volume = 292 | issue = 5517 | date = 2001-04-27 | pages = 706–709 | url = http://www.sciencemag.org/cgi/content/abstract/292/5517/706 | doi = 10.1126/science.1058782 | pmid = 11326094}}</ref>

This has since then been developed further and single-chip wafers with over ten billion correctly aligned nanotube junctions have been created. In addition it has been demonstrated that incorrectly aligned nanotubes can be removed automatically using standard [[photolithography]] equipment.<ref>{{Cite journal | last = Song | first = Jin | coauthors = Dongmok, Whang; McAlpine, Michael C.; Friedman, Robin S.; Yue, Wu; Lieber, Charles M. | title = Scalable Interconnection and Integration of Nanowire Devices Without Registration | journal = Nano Letters | volume = 4 | issue = 5 | year = 2004 | pages = 915–919 | url = http://cat.inist.fr/?aModele=afficheN&cpsidt=15775123 | doi = 10.1021/nl049659j}}</ref>

The first nanotube integrated memory circuit was made in 2004. One of the main challenges has been regulating the conductivity of nanotubes. Depending on subtle surface features a nanotube may act as a plain [[Electrical conductor|conductor]] or as a semiconductor. A fully automated method has however been developed to remove non-semiconductor tubes.<ref>{{Cite journal | first = Yu-Chih | last = Tseng | title = Monolithic Integration of Carbon Nanotube Devices with Silicon MOS Technology | journal = Nano Letters | volume = 4 | issue = 1 | year = 2004 | pages = 123–127 | url = http://pubs.acs.org/cgi-bin/sample.cgi/nalefd/2004/4/i01/html/nl0349707.html | doi = 10.1021/nl0349707 }}</ref>

An alternative way to make transistors out of carbon nanotubes has been to use random networks of them. By doing so one averages all of their electrical differences and one can produce devices in large scale at the wafer level.<ref>{{Cite journal | last = Gabriel| first = Jean-Christophe P.| title = Large Scale Production of Carbon Nanotube Transistors: A Generic Platforms for Chemical Sensors| journal = Mat. Res. Soc. Symp. Proc. | volume = 762 | year = 2003 | pages = Q.12.7.1| url = http://www.mrs.org/s_mrs/sec_subscribe.asp?CID=2606&DID=110422&action=detail}}</ref> This approach was first patented by Nanomix Inc.<ref>[http://www.nano.com Nanōmix - Breakthrough Detection Solutions with the Nanoelectronic Sensation Technology]</ref>(date of original application in June 2002 <ref>{{Cite journal | last = Gabriel| first = Jean-Christophe P.| coauthors = Bradley, Keith; Collins, Philip |title = Dispersed Growth Of Nanotubes on a substrate | journal = Patent WO 2004040671A2 | url = http://www.freepatentsonline.com/EP1560958.html }}</ref> ). It was first published in the academic literature by the Naval Research Laboratory in 2003 through independent research work. This approach also enabled Nanomix to make the first transistor on a flexible and transparent substrate.<ref>{{Cite journal | last = Bradley| first = Keith| coauthors = Gabriel, Jean-Christophe P.; Gruner, George | title = Flexible nanotube transistors| journal = Nano Letters | volume = 3 | issue = 10 | year = 2003 | pages = 1353–1355| url = http://pubs.acs.org/cgi-bin/abstract.cgi/nalefd/2003/3/i10/abs/nl0344864.html | doi = 10.1021/nl0344864 }}</ref>, <ref>{{Cite journal | last = Armitage| first = Peter N.| coauthors = Bradley, Keith; Gabriel, Jean-Christophe P.; Gruner, George |title = Flexible nanostructure electronic devices | journal = United States Patent 20050184641 A1 | url = http://www.freshpatents.com/Flexible-nanostructure-electronic-devices-dt20050825ptan20050184641.php}}</ref>

=== As a vessel for drug delivery ===

The nanotube’s versatile structure allows it to be used for a variety of tasks in and around the body. Although often seen especially in cancer related incidents, the carbon nanotube is often used as a vessel for transporting drugs into the body. The nanotube allows for the drug dosage to hopefully be lowered by localizing its distribution, as well as significantly cut costs to pharmaceutical companies and their consumers. The nanotube commonly carries the drug one of two ways: the drug can be attached to the side or trailed behind, or the drug can actually be placed inside the nanotube. Both of these methods are effective for the delivery and distribution of drugs inside of the body.

===Current applications===
They are used as bulk nanotubes, which is a mass of rather unorganized fragments of nanotubes. Bulk nanotube materials may never achieve a tensile strength similar to that of individual tubes, but such composites may nevertheless yield strengths sufficient for many applications. Bulk carbon nanotubes have already been used as composite fibers in [[polymers]] to improve the mechanical, thermal and electrical properties of the bulk product.

Carbon nanotubes have also been successfully used in the construction of handlebars for mountain bikes. The handlebar, created by Easton, is the EC70 DH, which has won awards for its incredible strength and light weight.

=== Other applications ===

Carbon nanotubes have also been implemented in nanoelectromechanical systems, including mechanical memory elements ([[NRAM]] being developed by [[Nantero|Nantero Inc.]]) and nanoscale electric motors (see [[Nanomotor]]).

Carbon nanotubes have also been proposed as a possible gene delivery vehicle and for use in combination with radiofrequency fields to destroy cancer cells. <ref>{{cite journal |last=Singh |first=Ravi |year=2005 |title=Binding and condensation of plasmid DNA onto functionalized carbon nanotubes : Toward the construction of nanotube-based gene delivery vectors |journal=J. Am. Chem. Soc. |volume=127 |issue=12 |pages=4388–4396 | url = http://pubs.acs.org/cgi-bin/abstract.cgi/jacsat/2005/127/i12/abs/ja0441561.html | doi = 10.1021/ja0441561 }}</ref> <ref>{{cite journal |last=Gannon |first=Christopher J. | coauthors = Cherukuri, Paul; Yakobson, Boris I.; Cognet, Laurent; Kanzius, John. S.; Kittrell, Carter; Weisman, R. Bruce; Pasquali, Matteo; Schmidt, Howard K.; Smalley, Richard E.; Curley, Steven A. |year=2007 |title=Carbon nanotube-enhanced thermal destruction of cancer cells in a noninvasive radiofrequency field |journal=Cancer |volume=Dec. 2007 | doi = 10.1002/cncr.23155 }}</ref>

[[Nanomix|Nanomix Inc]] was the first to put on the market an electronic device that integrated carbon nanotubes on a silicon platform, in May 2005. It was a Hydrogen sensor. Since then Nanomix has been patenting many such sensor applications such as in the field of carbon dioxide, Nitrous Oxide, glucose, DNA detection etc...

[[Eikos|Eikos Inc]] of Franklin, Massachusetts and [[Unidym]] Inc. of Silicon Valley, California are developing transparent, electrically conductive films of carbon nanotubes to replace [[indium tin oxide]] (ITO). Carbon nanotube films are substantially more mechanically robust than ITO films, making them ideal for high reliability touch screens and flexible displays. Printable water-based inks of carbon nanotubes are desired to enable the production of these films to replace ITO.<ref>{{cite journal |last=Simmons |first=Trevor |year=2007 |title=Large Area-Aligned Arrays from Direct Deposition of Single-Wall Carbon Nanotubes |journal=J. Am. Chem. Soc. |volume=129 |issue=33 |pages=10088–10089 | url = http://pubs.acs.org/cgi-bin/article.cgi/jacsat/2007/129/i33/html/ja073745e.html | doi = 10.1021/ja073745e }}</ref> Nanotube films show promise for use in displays for computers, cell phones, [[Personal digital assistant|PDA]]s, and [[Automated teller machine|ATM]]s.

Carbon nanotubes are said to have the strength of [[diamond]], and research is being made into weaving them into clothes to create stab-proof and bulletproof clothing. The nanotubes would effectively stop the bullet from penetrating the body but the force and velocity of the bullet would be likely to cause broken bones and internal bleeding. <ref>{{cite journal | first=T. | last=Yildirim | coauthors=''et al.'' | year=2000 | title=Pressure-induced interlinking of carbon nanotubes | journal=[[Physical Review]] B | volume=62 | pages=19 | doi=10.1103/PhysRevB.62.12648}}</ref>

A [[flywheel]] made of carbon nanotubes could be spun at extremely high velocity on a floating magnetic axis, and potentially store energy at a [[Energy density|density]] approaching that of conventional fossil fuels. Since energy can be added to and removed from flywheels very efficiently in the form of electricity, this might offer a way of [[Grid energy storage|storing electricity]], making the electrical grid more efficient and variable power suppliers (like wind turbines) more useful in meeting energy needs. The practicality of this depends heavily upon the cost of making massive, unbroken nanotube structures, and their failure rate under stress.

==See also==
*[[Carbon nanotubes in photovoltaics]]
*[[Carbon nanotube]]
*[[Selective chemistry of SWNT]]
*[[Nanoflower]]
*[[Boron_nitride#Boron_nitride_nanotubes|Boron nitride nanotube]]
*[[Allotropes of carbon]]

==Free-download reviews==
*[http://nanotube.msu.edu/nt06/ NT06 - the major CNT event - click the speakers]
*[http://nanotube.msu.edu/nt05/ NT05 - click the "HERE"s]
*[http://stacks.iop.org/1367-2630/5/i=1/a=E04 Selection of free-download articles on carbon nanotubes]

== References ==
{{reflist|2}}

== External links ==
{{Commons|Carbon nanotube}}
* [http://www.newscientisttech.com/channel/tech/nanotechnology New Scientist Special Report]: a collection of nanotechnology articles, most on nanotubes
* [http://www.nanomagazine.co.uk/readArticle.php?id=7 Applications and Markets of Carbon Nanotubes]: from issue 6 of Nano Magazine which focused solely on Carbon Nanotubes
* [http://news.com.com/The+stuff+of+dreams/2009-1008_3-5091267.html?tag=nl The stuff of dreams], [[CNET]]
* [http://pa.msu.edu/cmp/csc/NTSite/nanopage.html The Nanotube site]. Last updated 2007.07.08
* [http://nature.com/news/2006/061113/full/061113-11.html Carbon nanotech may have given swords of Damascus their edge], Nature 2006.
* [http://www.carbio.eu EU Marie Curie Network CARBIO: Multifunctional carbon nanotubes for biomedical applications]
* [http://technologyreview.com/read_article.aspx?ch=specialsections&sc=moores&id=17534 Nanowire Computing Made Practical]

== List of Carbon Nanotube Suppliers ==
Though vast variety of obstacles exist in the scaling-up of carbon nanotube production, some corporations and institutions have achieved that goal in a relative success:
<div class="references-small" style="-moz-column-count:2; column-count:2;">
* [http://www.ahwahneetech.com Ahwahnee Technology (USA)]
* [http://www.americanelements.com American Elements (USA)]
* [http://www.apexnanomaterials.com/ Apex Nanomaterials (USA)]
* [http://www.arkema.com/sites/group/en/products/spotlight/nanotubes.page Arkema (France)]
* [http://www.arry-nano.com/ Arry International Group Ltd. (Germany)]
* [http://www.baytubes.de/ Bayer MaterialScience AG (Germany)]
* [http://buckyusa.com/ BuckyUSA (USA)]
* [http://www.carbolex.com/ CarboLex Inc. (USA)]
* [http://www.carbondesignsinc.com/ Carbon Designs, Inc. (USA)]
* [http://www.unidym.com/ Unidym (USA)]
* [http://www.carbon-nanofiber.com/ carbon NT&F 21.. (Austria)]
* [http://www.carbonsolution.com/ Carbon Solutions, Inc. (USA)]
* [http://www.catalyticmaterials.com/ Catalytic Materials LLC (USA)]
* [http://www.cheaptubesinc.com/ Cheap Tubes Inc. (USA)]
* [http://www.timesnano.com/ Chengdu Organic Chemicals Co., Ltd.(China)]
* [http://www.cnanotechnology.com CNano Technology Limited (USA)]
* [http://www.fullereneinternational.com Fullerene International Corp. (USA)]
* [http://www.future-carbon.de/index.php?id=19&L=2 FutureCarbon GmbH (Germany)]
* [http://www.grupoantolin.com Grupo Antolín (Spain)]
* [http://www.nanotubeseu.com/ HeJi, Inc. (Hong Kong)]
* [http://www.helixmaterial.com/ Helix Material Solutions (USA)]
* [http://www.idahospace.com/ Idaho Space Materials, Inc. (USA)]
* [http://www.iljinnanotech.co.kr/ Iljin Nanotech Co., Ltd. (Korea)]
* [http://www.ironbarkcomposites.com.au/index.php?page=homepage Ironbark Composites (Australia)]
* [http://www.mercorp.com/mercorp/ M.E.R. Corp. (USA)]
* [http://www.microtechnano.com/ MicrotechNano (USA)]
* [http://www.mtr-ltd.com/ MTR Ltd. (USA)]
* [http://www.nanointegris.com/ NanoIntegris (USA)]
* [http://www.nano-c.com/ Nano-C (USA)]
* [http://www.nanocarblab.com/ NanoCarbLab (Russia)]
* [http://www.nanocomptech.com/ Nanocomp Technologies, Inc. (USA)]
* [http://www.nanocraftinc.com/ NanoCraft, Inc. (USA)]
* [http://www.nanocs.com/ Nanocs (USA)]
* [http://www.nanocyl.com/ Nanocyl S.A. (Belgium)]
* [http://www.nano-lab.com/home.html NanoLab (USA)]
* [http://www.nanoledge.com/ Nanoledge (France)]
* [http://www.nano.com/ Nanomix (USA)]
* [http://www.nanonb.com/ NanoNB Corp. (Canada)]
* [http://nanoamor.com Nanostructured & Amorphous Materials, Inc. (USA)]
* [http://www.nanotailor.com/ Nanotailor, Inc. (USA)]
* [http://www.nanotechlabs.com/ NanoTechLabs, Inc. (USA)]
* [http://www.nanotubesx.com/ Nanothinx S.A. (Greece)]
* [http://www.n-tec.no/ n-Tec (Norway)]
* [http://www.raymor.com/ Raymor Industries Inc. (Canada)]
* [http://www.e-nanoscience.com/index.html Rosseter Holdings Ltd. (South Cyprus)]
* [http://www.sesres.com/index.asp SES Research (USA)]
* [http://www.nanotubes.com.cn/ Shenzhen Nanotechnologies Co. Ltd. (China)]
* [http://www.sdk.co.jp/html/english/ Showa Denko (Japan)]
* [http://www.swentnano.com/ SouthWest NanoTechnologies (USA)]
* [http://www.stanfordmaterials.com/ Stanford Materials Corp. (USA)]
* [http://www.sunnano.com/ Sun Nanotech Co Ltd. (China)]
* [http://www.rsphysse.anu.edu.au/nanotube/ The Australian National University (Australia)]
* [http://www.thomas-swan.co.uk/ Thomas Swan & Co. Ltd. (England)]
* [http://www.toray.com/ Toray (Japan)]
* [http://www.xintek.com Xintek, Inc. (USA)]
* [http://www.21cnnano.com/index.htm 21st Century NanoTechnologies, Inc (China)]
</div>

== Molecular modeling software for carbon nanotubes ==
* [http://www.jobinyvon.com/SiteResources/Data/MediaArchive/files/Fluorescence/applications/SWNT_Fluorescence_FL-1.pdf SWNT_Fluorescence_FL-1.pdf]
* [[CoNTub|CoNTub v1.0]]
* [http://www.nanorex.com Nanorex]
* [http://www.photon.t.u-tokyo.ac.jp/~maruyama/wrapping3/wrapping.html Wrapping]
* [http://www.jcrystal.com Nanotube Modeller]
* [http://www.agilemolecule.com/Products.html Ascalaph Designer]
* [http://k.1asphost.com/tubeasp/tubeasp.asp TubeASP]
* [http://turin.nss.udel.edu/research/tubegenonline.html Tubegen]
* [http://www.accelrys.com Materials Studio 4.2]
* [http://www.atomistix.com Atomistix Virtual NanoLab and Atomistix ToolKit]
* [http://www.indigo.com/models/carbon-nanotube-molecular-model-kits.html Carbon Nanotube Models]

{{Allotropes of carbon}}


[[Category:Nanomaterials]]
[[Category:Carbon forms]]
[[Category:Antistatic agents]]
[[Category:Electrical conductors]]


[[Category:Wikipedia meetups|Auckland 4]]
[[be:Вугляродная нанатрубка]]
[[bs:Karbonska nanocijev]]
[[bg:Въглеродна нанотръба]]
[[de:Kohlenstoffnanoröhren]]
[[es:Nanotubo]]
[[eo:Nanotubo]]
[[fa:نانولوله کربنی]]
[[fr:Nanotube de carbone]]
[[ko:탄소 나노튜브]]
[[it:Nanotubo di carbonio]]
[[he:ננו שפופרת פחמנית]]
[[lv:Oglekļa nanocaurulītes]]
[[mk:Јаглеродни нано-цевки]]
[[nl:Koolstof nanobuis]]
[[ja:カーボンナノチューブ]]
[[no:Karbonnanorør]]
[[pl:Nanorurka]]
[[pt:Nanotubo de carbono]]
[[ru:Углеродные нанотрубки]]
[[simple:Carbon nanotube]]
[[fi:Nanoputki]]
[[sv:Nanorör]]
[[th:ท่อนาโนคาร์บอน]]
[[uk:Вуглецеві нанотрубки]]
[[zh:碳纳米管]]

Revision as of 07:50, 11 October 2008

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Date: Saturday, 11 October 2008
Time: 1 - 4 pm
Location: - Galbraith's, Mt Eden Rd, Auckland

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Venue

  • The Homepage is at www.alehouse.co.nz
  • They are located at the very start of Mt Eden Rd, just after to breaks off (to the left) at the top of Symonds St.
  • There is a carpark next door with some Galbraith's parking closest to the pub, get a ticket from the bar. It is also possible on Mt Eden Rd or nearby roads.
  • We have booked a table in the sideroom. To get there go in the main doors until you reach the main room (with the bar), turn right and go though a door (indicating toilets), there is a medium sized room with 2 long tables, we have booked one of these.
  • Booking is under the name of "Simon", Please call him on 027 408 9019 if you get lost.

Future Meetups

Please watchlist Wikipedia:Meetup/Auckland (which is very low traffic) to be informed of future meetups in Auckland or elsewhere in NZ, or Wikipedia:New Zealand Wikipedians' notice board for discussion relevant to New Zealand Wikipedians.

People

Attended

  1. SimonLyall
  2. gadfium
  3. Richard001 (talk)
  4. Onco_p53 (talk)
  5. HowiAuckland (talk)

Unable to come

  1. SamB135
  2. DerbyCountyinNZ
  3. Nzhamstar
  4. Taifarious1
  5. Ingolfson (talk) 03:31, 4 October 2008 (UTC) Sorry, too late, already have a meeting on that day.
  6. Ropata (talk) 08:33, 7 October 2008 (UTC)
  7. Nzpcmad (talk) Humble apologies - late cancellation.
  8. Geronimo20 (talk)

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