Strain responsive concave and convex microlens arrays

被引：82

作者：

Chandra, Dinesh ^{[1
]}

Yang, Shu ^{[1
]}

Lin, Pei-Chun ^{[2
]}

机构：

[1] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA

[2] Natl Taiwan Univ, Dept Mech Engn, Taipei 10617, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 25期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2827185

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the fabrication of single-component, strain responsive microlens arrays with real-time tunability. The concave lens array is fabricated by patterning hard oxide layer on a bidirectionally prestretched soft elastomer, poly(dimethylsiloxane) (PDMS) followed by confined buckling upon release of the prestrain. The convex microlens array is replica molded from the concave lenses in PDMS. Due to difference in lens formation mechanisms, the two types of lenses show different tunable range of focal length in response to the applied strain: large focal length change is observed from the concave microlens array, whereas that from the convex microlens array is much smaller. (c) 2007 American Institute of Physics.

引用

页数：3

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