Raman Measurements of Thermal Transport in Suspended Monolayer Graphene of Variable Sizes in Vacuum and Gaseous Environments

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	Raman Measurements of Thermal Transport in Suspended Monolayer Graphene of Variable Sizes in Vacuum and Gaseous Environments
	Chen, S. S. ; Moore, A. L. ; Cai, W. W. ; Suk, J. W. ; An, J. H. ; Mishra, C. ; Amos, C. ; Magnuson, C. W. ; Kang, J. Y. ; Shi, L. ; Ruoff, R. S. ; Kang JY(康俊勇)
刊名	http://dx.doi.org/10.1021/nn102915x
	2011-01
关键词	WALL CARBON NANOTUBE PYROLYTIC GRAPHITE CONDUCTIVITY CONDUCTANCE FILMS TEMPERATURE
英文摘要	University of Texas at Austin; Texas Nanotechnology Research Superiority Initiative (TNRSI)/SWAN; Office of Naval Research [N00014-10-1-0581]; Department of Energy Office of Science [DEFG02-07ER46377]; National Science Foundation [CBET-0553649]; China Sch; Using micro-Raman spectroscopy, the thermal conductivity of a graphene monolayer grown by chemical vapor deposition and suspended over holes with different diameters ranging from 2.9 to 9.7 mu m was measured in vacuum, thereby eliminating errors caused by heat loss to the surrounding gas. The obtained thermal conductivity values of the suspended graphene range from (2.6 +/- 0.9) to (3.1 +/- 1.0) x 10(-3) Wm(-1)K(-1)near 350 K without showing the sample size dependence predicted for suspended, clean, and flat graphene crystal The lack, of sample size dependence is attributed to the relatively large measurement uncertainty as well as grain boundaries,,wrinkles, defects, or polymeric residue that ate possibly present in the measured samples. Moreover, from Raman measurements performed In air and CO2 gas environments near atmospheric pressure, the heat transfer coefficient for air and CO2 was determined and found to be (2.9 + 5.1/-2.9) and (1.5 + 4.2/-1.5) x 10(4) Wm(-2)K(-1), respectively, when the graphene temperature was heated by the Raman laser to about 510 K.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/69176]
专题	物理技术－已发表论文
推荐引用方式 GB/T 7714	Chen, S. S.,Moore, A. L.,Cai, W. W.,et al. Raman Measurements of Thermal Transport in Suspended Monolayer Graphene of Variable Sizes in Vacuum and Gaseous Environments[J]. http://dx.doi.org/10.1021/nn102915x,2011.
APA	Chen, S. S..,Moore, A. L..,Cai, W. W..,Suk, J. W..,An, J. H..,...&康俊勇.(2011).Raman Measurements of Thermal Transport in Suspended Monolayer Graphene of Variable Sizes in Vacuum and Gaseous Environments.http://dx.doi.org/10.1021/nn102915x.
MLA	Chen, S. S.,et al."Raman Measurements of Thermal Transport in Suspended Monolayer Graphene of Variable Sizes in Vacuum and Gaseous Environments".http://dx.doi.org/10.1021/nn102915x (2011).