Manipulation of Electron Beam Propagation by Hetero-Dimensional Graphene Junctions

被引：48

作者：

Wang, Zhengfei ^{[1
]}

Liu, Feng ^{[1
]}

机构：

[1] Univ Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USA

来源：

ACS NANO | 2010年 / 4卷 / 04期

关键词：

graphene junction; graphene transport; electron beam manipulation; scanning probe microscopy; TRANSPORT; FLOW; LENS;

D O I：

10.1021/nn1001722

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We demonstrate theoretically a new mechanism for the energy-selective manipulation of electron beam by nanostructured heterodimensional graphene junctions (HDGJs). Beam splitting, collimation, and beam-guide can all be realized by designing HDGJs of different dimensionality, size and orientation. Importantly, these different functions can be combined together by predesigned patterning of multiple HOW units in one graphene sheet, making it feasible for large-scale integration of quantum devices. Based on transport simulations, we further suggest an method to map out the electron beam propagation path through HDGJs by scanning probe microscopy.

引用

页码：2459 / 2465

页数：7

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