화학공학소재연구정보센터
Advanced Materials, Vol.20, No.19, 3589-3589, 2008
Scanning Photoemission Microscopy of Graphene Sheets on SiO2
Scanning photoemission microscopy (SPEM) images of a graphene flake as well as the C Is core level spectra for the mono- and multilayer graphene are measured. The samples with lateral dimensions on the micrometer scale are prepared on a SiO2 surface by direct exfoliation of crystalline graphite. Monolayer graphene is distinguished from the multilayer graphenes through the chemical contrast images of SPEM.