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Examination of Graphene with Very Slow Electrons
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SYSNO ASEP 0437839 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Examination of Graphene with Very Slow Electrons Author(s) Mikmeková, Eliška (UPT-D) RID
Frank, Luděk (UPT-D) RID, SAI, ORCIDNumber of authors 2 Source Title NANOCON 2014. 6th International conference proceedings. - Ostrava : TANGER, 2014 - ISBN 978-80-87294-55-0 Number of pages 6 s. Publication form Medium - C Action NANOCON 2014. International Conference /6./ Event date 05.11.2014-07.11.2014 VEvent location Brno Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords graphene ; slow electrons ; very low energy scanning electron microscopy ; ultralow energy STEM Subject RIV JA - Electronics ; Optoelectronics, Electrical Engineering R&D Projects TE01020118 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) LO1212 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UPT-D - RVO:68081731 UT WOS 000350636300127 Annotation Although graphene has been available and intensively studied for nearly a full decade, new methods are still required for its examination and diagnostics. Even checking the continuity of layers and the reliable counting of layers of graphene and other 2D crystals should be easier to perform. Scanning electron microscopy with slow and very slow electrons offers an innovative tool enabling one to see graphene samples at nanometer or even sub-nanometer lateral resolution in both transmitted and reflected electrons and to count the number of layers reliably in both imaging modes. Diagnostics can be performed in this way on freestanding graphene samples as well as on graphene grown on the surfaces of bulk substrates. Moreover, bombardment with very slow electrons acts as an ultimate cleaning procedure removing adsorbed gases from crystal surfaces which can be monitored in scanned transmission electron images taken at below 50 eV. Workplace Institute of Scientific Instruments Contact Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Year of Publishing 2015
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