Journal
NANOTECHNOLOGY
Volume 23, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/23/2/025708
Keywords
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Funding
- National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2011-0013066]
- National Research Foundation of Korea [2011-0013066] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We investigated the colors of graphene and graphene-oxide multilayers that were deposited on various dielectric layers. In particular, the effects of the material thickness, the types of dielectric layers, and the existence of a back silicon substrate were analyzed. The colors of graphene-oxide layers on a SiO(2)/Si substrate were found to periodically change as the material thickness increased. However, the colors of graphene layers on the same substrate became saturated without a similar periodic change. The calculated colors corresponding to the material thicknesses were verified by optical microscopy and profilometry. We believe that these results demonstrate the possibility of utilizing color as a simple tool for detecting and estimating the thicknesses of graphene and graphene-oxide multilayers.
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