Adsorbate-Induced Curvature and Stiffening of Graphene

被引：24

作者：

Svatek, Simon A. ^{[1
]}

Scott, Oliver R. ^{[1
]}

Rivett, Jasmine P. H. ^{[1
]}

Wright, Katherine ^{[1
]}

Baldoni, Matteo ^{[2
]}

Bichoutskaia, Elena ^{[2
]}

Taniguchi, Takashi ^{[3
]}

Watanabe, Kenji ^{[3
]}

Marsden, Alexander J. ^{[4
]}

Wilson, Neil R. ^{[4
]}

Beton, Peter H. ^{[1
]}

机构：

[1] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England

[2] Univ Nottingham, Sch Chem, Nottingham NG7 2RD, England

[3] Natl Inst Mat Sci, Adv Mat Lab, Tsukuba, Ibaraki 3050044, Japan

[4] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

来源：

NANO LETTERS | 2015年 / 15卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

graphene; water; mica; STM; alkanes; SCANNING-TUNNELING-MICROSCOPY; HEXAGONAL BORON-NITRIDE; EPITAXIAL GRAPHENE; MOLECULAR-DYNAMICS; HIGH-QUALITY; WATER; MICA; GRAPHITE; HYDROCARBONS; FLAT;

D O I：

10.1021/nl503308c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The adsorption of the alkane tetratetracontane (TTC, C44H90) on graphene induces the formation of a curved surface stabilized by a gain in adsorption energy. This effect arises from a curvature-dependent variation of a moire pattern due to the mismatch of the carboncarbon separation in the adsorbed molecule and the period of graphene. The effect is observed when graphene is transferred onto a deformable substrate, which in our case is the interface between water layers adsorbed on mica and an organic solvent, but is not observed on more rigid substrates such as boron nitride. Our results show that molecular adsorption can be influenced by substrate curvature, provide an example of two-dimensional molecular self-assembly on a soft, responsive interface, and demonstrate that the mechanical properties of graphene may be modified by molecular adsorption, which is of relevance to nanomechanical systems, electronics, and membrane technology.

引用

页码：159 / 164

页数：6

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