Journal
NANO LETTERS
Volume 12, Issue 9, Pages 4444-4448Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl301073q
Keywords
Graphene; Raman spectroscopy; Young's modulus; strain; graphene balloon
Categories
Funding
- National Research Foundation (NRF)
- Korean government (MEST) [2011-0013461, 2011-0017605]
- center for Advanced Soft Electronics under the Global Frontier Research Program of MEST [2011-0031630]
- National Research Foundation of Korea [2011-0017605, 2011-0013461, 과09A1113, 2011-0031630] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The Young's 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's modulus of graphene. The estimated Young's modulus values of, single- and bilayer graphene are 2.4 +/- 0.4 and 2.0 +/- 0.5 TPa, respectively.
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