Discrete Dynamics of Nanoparticle Channelling in Suspended Graphene

被引：54

作者：

Booth, Tim J. ^{[1
]}

Pizzocchero, Filippo ^{[1
]}

Andersen, Henrik ^{[1
]}

Hansen, Thomas W. ^{[2
]}

Wagner, Jakob B. ^{[2
]}

Jinschek, Joerg R. ^{[3
]}

Dunin-Borkowski, Rafal E. ^{[2
]}

Hansen, Ole ^{[1
]}

Boggild, Peter ^{[1
]}

机构：

[1] DTU Nanotech, Lyngby, Denmark

[2] DTU CEN, Lyngby, Denmark

[3] FEI Co Bb Eindhoven, Eindhoven, Netherlands

来源：

NANO LETTERS | 2011年 / 11卷 / 07期

关键词：

Graphene; graphene membranes; silver nanopartides; catalysis; channelling; CATALYTIC-HYDROGENATION; GRAPHITE; OXIDATION;

D O I：

10.1021/nl200928k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have observed a previously undescribed stepwise oxidation of mono- and few layer suspended graphene by silver nanoparticles in situ at subnanometer scale in an environmental transmission electron microscope. Over the range of 600-850 K, we observe crystallographically oriented channelling with rates in the range 0.01-1 nm/s and calculate an activation energy of 0.557 +/- 0.016 eV. We present a discrete statistical model for this process and discuss the implications for accurate nanoscale patterning of nanoscale systems.

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收藏

页码：2689 / 2692

页数：4

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