Spatial control of defect creation in graphene at the nanoscale

被引：317

作者：

Robertson, Alex W. ^{[1
]}

Allen, Christopher S. ^{[1
]}

Wu, Yimin A. ^{[1
]}

He, Kuang ^{[1
]}

Olivier, Jaco ^{[2
]}

Neethling, Jan ^{[2
]}

Kirkland, Angus I. ^{[1
]}

Warner, Jamie H. ^{[1
]}

机构：

[1] Univ Oxford, Dept Mat, Oxford OX1 3PH, England

[2] Nelson Mandela Metropolitan Univ, Ctr HRTEM, Port Elizabeth, South Africa

来源：

NATURE COMMUNICATIONS | 2012年 / 3卷

基金：

英国工程与自然科学研究理事会;

关键词：

CARBON; COALESCENCE; TRANSPORT;

D O I：

10.1038/ncomms2141

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：

Defects in graphene alter its electrical, chemical, magnetic and mechanical properties. The intentional creation of defects in graphene offers a means for engineering its properties. Techniques such as ion irradiation intentionally induce atomic defects in graphene, for example, divacancies, but these defects are randomly scattered over large distances. Control of defect formation with nanoscale precision remains a significant challenge. Here we show control over both the location and average complexity of defect formation in graphene by tailoring its exposure to a focussed electron beam. Divacancies and larger disordered structures are produced within a 10x10 nm(2) region of graphene and imaged after creation using an aberration-corrected transmission electron microscope. Some of the created defects were stable, whereas others relaxed to simpler structures through bond rotations and surface adatom incorporation. These results are important for the utilization of atomic defects in graphene-based research.

引用

页数：7

共 44 条

[1] Two-Dimensional Coalescence Dynamics of Encapsulated Metallofullerenes in Carbon Nanotubes [J].