Electromechanical Properties of Graphene Drumheads

被引：270

作者：

Klimov, Nikolai N. ^{[1
,2
,3
]}

Jung, Suyong ^{[1
,2
]}

Zhu, Shuze ^{[4
]}

Li, Teng ^{[1
,4
]}

Wright, C. Alan ^{[4
]}

Solares, Santiago D. ^{[1
,4
]}

Newell, David B. ^{[3
]}

Zhitenev, Nikolai B. ^{[2
]}

Stroscio, Joseph A. ^{[2
]}

机构：

[1] Univ Maryland, Maryland Nanoctr, College Pk, MD 20742 USA

[2] NIST, Ctr Nanoscale Sci & Technol, Gaithersburg, MD 20899 USA

[3] NIST, Phys Measurement Lab, Gaithersburg, MD 20899 USA

[4] Univ Maryland, Dept Mech Engn, College Pk, MD 20742 USA

来源：

SCIENCE | 2012年 / 336卷 / 6088期

基金：

美国国家科学基金会;

关键词：

FIELD;

D O I：

10.1126/science.1220335

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We determined the electromechanical properties of a suspended graphene layer by scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS) measurements, as well as computational simulations of the graphene-membrane mechanics and morphology. A graphene membrane was continuously deformed by controlling the competing interactions with a STM probe tip and the electric field from a back-gate electrode. The probe tip-induced deformation created a localized strain field in the graphene lattice. STS measurements on the deformed suspended graphene display an electronic spectrum completely different from that of graphene supported by a substrate. The spectrum indicates the formation of a spatially confined quantum dot, in agreement with recent predictions of confinement by strain-induced pseudomagnetic fields.

引用

页码：1557 / 1561

页数：5

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