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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47101

Title: Estimating Young’s modulus of graphene with Raman scattering enhanced by micrometer tip.
Authors: Chia-Seng Chang
Shao-Wei Weng
Wei-Hsiang Lin
Wei-Bin Su
En-Te Hwu
Peilin Chen
Tsong-Ru Tsai
Contributors: 國立臺灣海洋大學:光電科學研究所
Date: 2014-06
Issue Date: 2018-07-02T03:27:40Z
Publisher: Nanotechnology
Abstract: Abstract: We demonstrate that the Raman intensities of G and 2D bands of a suspended graphene can be enhanced using a gold tip with an apex size of 2.3 μm. The enhancement decays with the tip-graphene distance exponentially and remains detectable at a distance of 1.5 μm. Raman mappings show that the enhanced area is comparable to the apex size. Application of a bias voltage to the tip can attract the graphene so that Raman signals are intensified. The exponential enhancement-distance relationship enables the measurement of the graphene deformation, and the Young's modulus of graphene is estimated to be 1.48 TPa.
Relation: 25(25)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47101
Appears in Collections:[光電科學研究所] 期刊論文

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