Novel carbon nanosheets as support for ultrahigh-resolution structural analysis of nanoparticles

Ultramicroscopy
Christoph T NottbohmArmin Gölzhäuser

Abstract

The resolution in transmission electron microscopy (TEM) has reached values as low as 0.08 nm. However, these values are not accessible for very small objects in the size range of a few nanometers or lower, as they have to be placed on some support, which contributes to the overall electron-scattering signal, thereby blurring the contrast. Here, we report on the use of nanosheets made from cross-linked aromatic self-assembled monolayers as TEM sample supports. When transferred onto a copper grid, a single 1.6-nm-thick nanosheet can cover the grid and is free standing within the micron-sized openings. Despite its thinness, the sheet is stable under the impact of the electron beam. Micrographs taken from nanoclusters onto these nanosheets show highly increased contrast in comparison to the images taken from amorphous carbon supports. In scanning transmission electron microscopy with nanosheet support, a size analysis of sub-nanometer Au clusters was performed and single Au atoms were resolved.

References

Feb 13, 2001·Science·A Hatzor, P Weiss
Jan 5, 2002·Ultramicroscopy·M A O'KeefeA Thust

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Citations

Dec 9, 2008·Physical Chemistry Chemical Physics : PCCP·André BeyerArmin Gölzhäuser
Apr 22, 2010·Physical Chemistry Chemical Physics : PCCP·Christoph T NottbohmArmin Gölzhäuser
Apr 22, 2010·Physical Chemistry Chemical Physics : PCCP·Daniel RhinowNorbert Hampp
Sep 10, 2010·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Armin Gölzhäuser, Christof Wöll
Aug 16, 2013·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Marina SchenkKatharina Kohse-Höinghaus
Oct 5, 2010·Angewandte Chemie·Zhikun ZhengArmin Gölzhäuser
Mar 29, 2014·Advanced Materials·Nikolaus Meyerbröker, Michael Zharnikov
Sep 30, 2009·Small·Mark SchnietzArmin Gölzhäuser
Feb 19, 2014·Advanced Materials·Min AiAndré Beyer
Feb 24, 2015·Langmuir : the ACS Journal of Surfaces and Colloids·Keita FuchiseChristopher Barner-Kowollik
Mar 17, 2015·The Journal of Chemical Physics·N MeyerbroekerM Zharnikov
Jun 10, 2016·Advanced Materials·Andrey Turchanin, Armin Gölzhäuser
Jan 20, 2012·Beilstein Journal of Nanotechnology·Xianghui ZhangArmin Gölzhäuser
Mar 8, 2014·Beilstein Journal of Nanotechnology·Xianghui ZhangArmin Gölzhäuser
Oct 2, 2015·Beilstein Journal of Nanotechnology·André BeyerArmin Gölzhäuser
Jan 19, 2021·Soft Matter·Johannes BookholdThomas Hellweg
Jun 3, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Andrey TurchaninArmin Gölzhäuser
Jun 2, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Nikolaus Meyerbröker, Michael Zharnikov

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