Leo Gross (physicist)

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Leo Gross (* 1973 ) is a German solid state physicist at the IBM research laboratory in Rüschlikon . He works in the field of atomic force microscopy (AFM) and nanoscience .

Gross studied physics at the Free University of Berlin and, after completing his intermediate diploma, spent a year at Tulane University , where he studied images of surfaces on an atomic scale using scanning tunneling microscopy . He was particularly fascinated by the fact that he received an experimental response from the sample in real time by changing the parameters. He received his doctorate in physics in 2005 under Karl-Heinz Rieder at the Free University of Berlin. The dissertation ( LT-STM Investigation of Organic Molecules for Molecular Electronics: Lander and Hexabenzocoronene Derivatives on Copper Surfaces ), which dealt with the study of organic molecules for molecular electronics with scanning tunneling microscopy (LT-STM, low temperature scanning tunneling microscopy), received the Tiburtius Prize of the Berlin universities and led to an article in Nature Materials. They were able to place and move up to six specifically added individual copper atoms on a copper surface (copper) within a molecule (hexa-t-butyl-hexaphenylbenzene, HB-HPB). He then worked as a post-doctoral student in Gerhard Meyer's group at IBM in Rüschlikon near Zurich. In 2009 he became a member of the laboratory, where he heads the atomic and molecule manipulation group.

Together with Gerhard Meyer, he developed a variant of the atomic force microscope or scanning tunneling microscope in which a molecule sits at the tip of the probe. This made it possible to obtain direct images of atoms and molecules (and their reactions) and thus to find a new, direct method of structural research in organic chemistry. They succeeded in the first atomic resolution of the structure of a molecule with the atomic force microscope (Leo Gross with Gerhard Meyer, Fabian Mohn, Nikolaj Moll from IBM and Peter Liljeroth from the University of Utrecht) in 2009, published in Science. In a further paper in Science in the same year, they showed that the charge state of atoms can be measured with the AFM, which, according to Gross, will in the future open up the possibility of following the path of a single electron in molecular networks (e.g. for switches).

In 2010 he received the Gerhard Ertl Young Investigator Award. In 2012 he and Gerhard Meyer and Jascha Repp received the Feynman Prize in Nanotechnology for the group’s work at the IBM Research Center Rüschlikon. In 2016 he received an ERC Consolidator Grant (project: AFM for Molecular Structure Elucidation ).

Fonts

  • with Fabian Mohn, Gerhard Meyer, Jascha Repp, Franz J. Giessibl : Atomic charge states under the atomic force microscope. In: Physics in Our Time. Volume 40, Issue 5, 2009, pp. 225-226.
  • with Fabian Mohn, Nikolaj Moll, Peter Liljeroth, Gerhard Meyer: The chemical structure of a molecule resolved by atomic force microscopy. In: Science. Volume 325, 2009, pp. 1110-1114.
  • with Fabian Mohn, Peter Liljeroth, Jascha Repp, Franz J. Giessibl, Gerhard Meyer: Measuring the Charge State of an Adatom with Noncontact Atomic Force Microscopy. In: Science. 324, 2009, pp. 1428-1431.
  • with Fabian Mohn, Jascha Repp, Gerhard Meyer, Matthew Dyer, Mats Persson: Reversible Bond Formation in a Gold-Atom-Organic-Molecule Complex as a Molecular Switch. In: Physical Review Letters. Volume 105, 2010.
  • with Gerhard Meyer u. a .: Organic structure determination using atomic-resolution scanning probe microscopy. In: Nature Chemistry. Volume 2, 2010, pp. 821-825.
  • with Nikolaj Moll, Gerhard Meyer a. a .: The mechanisms underlying the enhanced resolution of atomic force microscopy with functionalized tips. In: New Journal of Physics. Volume 12, 2010.
  • with Gerhard Meyer u. a .: Bond-order discrimination by atomic force microscopy. In: Science. Volume 337, 2012, pp. 1326-1329.
  • with Fabian Mohn, Nikolaj Moll, Gerhard Meyer: Imaging the charge distribution within a single molecule. In: Nature Nanotechnology. Volume 7, 2012, pp. 227-231.

Web links

Individual evidence

  1. ↑ Date of birth according to Derek Lowe, Das Chemiebuch, Librero 2017, p. 508
  2. ↑ Interview with Virginia Gewin , Career Q&A, Nature, Volume 465, 2010, p. 255
  3. ^ Gross, Rieder, Christian Joachim u. a .: Trapping and moving metal atoms with a six-leg molecule, Nature Materials, Volume 4, 2005, pp. 892-895, abstract
  4. ↑ IBM researchers show the inner structure of molecules with atomic resolution for the first time , IBM Zurich 2009
  5. ↑ Interview, Nature, Volume 465, 2010, p. 255
personal data
SURNAME Big, Leo
BRIEF DESCRIPTION German physicist
DATE OF BIRTH 1973