Mechanical Properties of Mono layer Graphene Oxide

被引：982

作者：

Suk, Ji Won

Piner, Richard D.

An, Jinho

Ruoff, Rodney S. ^{[1
]}

机构：

[1] Univ Texas Austin, Dept Mech Engn, Austin, TX 78712 USA

来源：

ACS NANO | 2010年 / 4卷 / 11期

基金：

美国国家科学基金会;

关键词：

graphene oxide; mechanical properties; membranes; atomic force microscopy; finite element analysis; GRAPHITE OXIDE; ELECTRONIC-STRUCTURE; ELASTIC PROPERTIES; FILMS; CONDUCTIVITY; REDUCTION; STRENGTH;

D O I：

10.1021/nn101781v

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Mechanical properties of ultrathin membranes consisting of one layer, two overlapped layers, and three overlapped layers of graphene oxide platelets were investigated by atomic force microscopy (AFM) imaging in contact mode. In order to evaluate both the elastic modulus and prestress of thin membranes, the AFM measurement was combined with the finite element method (FEM) in a new approach for evaluating the mechanics of ultrathin membranes monolayer graphene oxide found to have a lower effective Young'S modulus (207 6 +/- 23 4 Gpa when a thickness of 0 7 nm is used) as compared to the value reported for "pristine" graphene. The prestress (39 7-76 8 MPa) of the graphene oxide membranes obtained by solution based deposition was found to be 1 order of magnitude lower than that Obtained by others for mechanically cleaved graphene The novel AFM Imaging and FEM based mapping methods presented here are of general utility for obtaining the,elastic modulus and prestress of thin membranes

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页码：6557 / 6564

页数：8

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