Graphene at the Edge: Stability and Dynamics

被引：1038

作者：

Girit, Caglar Oe ^{[1
,2
]}

Meyer, Jannik C. ^{[1
,2
]}

Erni, Rolf ^{[3
]}

Rossell, Marta D. ^{[3
]}

Kisielowski, C. ^{[3
]}

Yang, Li ^{[1
,2
]}

Park, Cheol-Hwan ^{[1
,2
]}

Crommie, M. F. ^{[1
,2
]}

Cohen, Marvin L. ^{[1
,2
]}

Louie, Steven G. ^{[1
,2
]}

Zettl, A. ^{[1
,2
]}

机构：

[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA

来源：

SCIENCE | 2009年 / 323卷 / 5922期

基金：

美国国家科学基金会;

关键词：

ATOMIC-STRUCTURE; DIRAC FERMIONS; CARBON; DAMAGE;

D O I：

10.1126/science.1166999

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：

Although the physics of materials at surfaces and edges has been extensively studied, the movement of individual atoms at an isolated edge has not been directly observed in real time. With a transmission electron aberration-corrected microscope capable of simultaneous atomic spatial resolution and 1-second temporal resolution, we produced movies of the dynamics of carbon atoms at the edge of a hole in a suspended, single atomic layer of graphene. The rearrangement of bonds and beam-induced ejection of carbon atoms are recorded as the hole grows. We investigated the mechanism of edge reconstruction and demonstrated the stability of the "zigzag" edge configuration. This study of an ideal low-dimensional interface, a hole in graphene, exhibits the complex behavior of atoms at a boundary.

引用

页码：1705 / 1708

页数：4

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