期刊
NANOTECHNOLOGY
卷 23, 期 36, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/23/36/365701
关键词
-
资金
- National Natural Science Foundation of China [91123009, 10975115]
- Natural Science Foundation of Fujian Province of China [2012J06002]
- National Science Foundation [1006350]
- Office of Naval Research
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1006350] Funding Source: National Science Foundation
The thermal conductivity (kappa) of suspended graphene membranes made by chemical vapor deposition (CVD) was measured by micro-Raman mapping. Cracks and wrinkles present in these suspended graphene membranes were identified by micro-Raman mapping, and kappa values and their statistics were obtained on membranes free of such imperfections in a single mapping. Based on this new technique, an average kappa value of 1875 +/- 220 W m(-1) K-1 at 420 K was measured on 26 suspended graphene membranes that were free of wrinkles, similar to 27% higher than the average value measured from 12 graphene membranes with wrinkles. These results suggest that the variation in published thermal conductivity values for suspended graphene samples could, at least in part, be due to the presence or absence of wrinkles.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据