title: Estimation of Young's modulus of graphene by Raman spectroscopy.
abstract: 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.
authors.affiliation: Department of Physics, Sogang University, Seoul 121-742, Korea.
authors.forename: Jae-Ung
authors.initials: JU
authors.lastname: Lee
authors.forename: Duhee
authors.initials: D
authors.lastname: Yoon
authors.forename: Hyeonsik
authors.initials: H
authors.lastname: Cheong
mesh_terms: D000465:Algorithms; D055119:Elastic Modulus; D006108:Graphite / Q000737:chemistry*; D008422:Materials Testing / Q000379:methods*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D013059:Spectrum Analysis, Raman / Q000379:methods*
chemical_list: D006108:Graphite