Charge-induced reversible bending in nanoporous alumina-aluminum composite

被引：7
作者：
Cheng, Chuan [1 ]
Ngan, A. H. W. [1 ]
机构：
[1] Univ Hong Kong, Dept Mech Engn, Hong Kong, Hong Kong, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 21期
关键词：
ANODIC ALUMINUM; SURFACE-STRESS; GROWTH; STRAIN; OXIDE; METAL; GOLD;
D O I：
10.1063/1.4808212
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Upon electrical charging, reversible bending was found in nanoporous anodic alumina-aluminum foil composites, as directly observed by an optical microscope and detected by in situ nanoindentation. The bending is thought to be the result of charge-induced surface stresses in the nanoporous alumina. The results suggest the possibility of a type of composite foil materials for applications as microscale actuators to transform electrical energy into mechanical energy. (C) 2013 AIP Publishing LLC.
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页数：4
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