Polar-surface dominated ZnO nanobelts and the electrostatic energy induced nanohelixes, nanosprings, and nanospirals

被引：296

作者：

Kong, XY

Wang, ZL ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

[2] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200030, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 06期

关键词：

D O I：

10.1063/1.1646453

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the controlled synthesis of free-standing ZnO nanobelts whose surfaces are dominated by the large polar surfaces. The nanobelts grow along the a axis, their large top/bottom surfaces are the +/-(0001) polar planes, and the side surfaces are (01(1) over bar 0). Owing to the positive and negative ionic charges on the zinc- and oxygen-terminated +/-(0001) surfaces, respectively, the nanobelts form multiloops of nanohelixes/nanosprings/nanospirals for the sake of reducing electrostatic energy introduced by the polar surfaces as well as balancing the difference in surface tension. The polar surface dominated ZnO nanobelts are likely to be an ideal system for understanding piezoelectricity and polarization induced phenomena at nanoscale. (C) 2004 American Institute of Physics.

引用

页码：975 / 977

页数：3

共 16 条

[11] Stabilization of polar ZnO surfaces:: Validating microscopic models by using CO as a probe molecule -: art. no. 106102 [J].