Total color difference for rapid and accurate identification of graphene

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	Total color difference for rapid and accurate identification of graphene
	L. B. Gao; W. C. Ren; F. Li; H. M. Cheng
	2008
发表期刊	Acs Nano
ISSN	1936-0851
卷号	2 期号:8 页码:1625-1633
摘要	For rapid and accurate identification of graphenes by optical images, a total color difference (TCD) method is proposed and demonstrated based on a combination of reflection spectrum and International Commission on Illumination color space. The preferential thickness of different dielectric films covered on a Si substrate is well elucidated, and a 72 nm thick Al2O3 film is found to be much better than the commonly used SiO2 or Si3N4 films. The TCD both between monolayer graphene and substrate and between graphene of different layers (an be further improved by appropriately narrowing the wavelength range of the light source. Moreover, the influences of the objective lens in a real-world optical system on the TCD are also discussed. These findings provide useful information for rapid evaluation of the layer range of graphenes simply by different color bands and for accurate and reliable layer identification due to large TCD values, which opens up the possibility for the nondestructive identification and physical property measurements of graphene with an optical microscope.
部门归属	[gao, libo; ren, wencai; li, feng; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;ren, wc (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;wcren@imr.ac.cn cheng@imr.ac.cn
关键词	Graphene Total Color Difference Number Of Layers Substrate Light Source Objective Lens Optical Method Films Spectroscopy Sheets Layer
URL	查看原文
WOS记录号	WOS:000258775000016
引用统计	被引频次：131[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32772
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. B. Gao,W. C. Ren,F. Li,et al. Total color difference for rapid and accurate identification of graphene[J]. Acs Nano,2008,2(8):1625-1633.
APA	L. B. Gao,W. C. Ren,F. Li,&H. M. Cheng.(2008).Total color difference for rapid and accurate identification of graphene.Acs Nano,2(8),1625-1633.
MLA	L. B. Gao,et al."Total color difference for rapid and accurate identification of graphene".Acs Nano 2.8(2008):1625-1633.