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Enhanced field electron emission of graphene sheets by CsI coating after electrophoretic deposition

Jianlong Liu1, Baoqing Zeng, Zhe Wu

  • 1National Key Laboratory of Science and Technology on Vacuum Electronics, School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China.

ACS Applied Materials & Interfaces
|December 20, 2011
PubMed

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To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...