Mechanical properties of suspended graphene sheets

被引：978

作者：

Frank, I. W. ^{[1
]}

Tanenbaum, D. M. ^{[1
]}

Van der Zande, A. M. ^{[2
]}

McEuen, P. L. ^{[2
]}

机构：

[1] Pomona Coll, Dept Phys & Astron, Claremont, CA 91711 USA

[2] Cornell Univ, Cornell Ctr Mat Res, Ithaca, NY 14853 USA

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B | 2007年 / 25卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1116/1.2789446

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Using an atomic force microscope, we measured effective spring constants of stacks of graphene sheets (less than 5) suspended over photolithographically defined trenches in silicon dioxide. Measurements were made on layered graphene sheets of thicknesses between 2 and 8 nm, with measured spring constants scaling as expected with the dimensions of the suspended section, ranging from 1 to 5 N/m. When our data are fitted to a model for doubly clamped beams under tension, we extract a Young's modulus of 0.5 TPa, compared to 1 TPa for bulk graphite along the basal plane, and tensions on the order of 10(-7) N. (C) 2007 American Vacuum Society.

引用

页码：2558 / 2561

页数：4

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