Estimation of Young鈥檚 Modulus of Graphene by Raman Spectroscopy
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- 作者：Jae-Ung Lee ; Duhee Yoon ; Hyeonsik Cheong
- 刊名：Nano Letters
- 出版年：2012
- 出版时间：September 12, 2012
- 年：2012
- 卷：12
- 期：9
- 页码：4444-4448
- 全文大小：335K
- 年卷期：v.12,no.9(September 12, 2012)
- ISSN：1530-6992
文摘
The Young鈥檚 modulus of graphene is estimated by measuring the strain applied by a pressure difference across graphene membranes using Raman spectroscopy. The strain induced on pressurized graphene balloons can be estimated directly from the peak shift of the Raman G band. By comparing the measured strain with numerical simulation, we obtained the Young鈥檚 modulus of graphene. The estimated Young鈥檚 modulus values of single- and bilayer graphene are 2.4 卤 0.4 and 2.0 卤 0.5 TPa, respectively.