TITLE

Tunable liquid microlens actuated by infrared light-responsive hydrogel

AUTHOR(S)
Xuefeng Zeng; Hongrui Jiang
PUB. DATE
October 2008
SOURCE
Applied Physics Letters;10/13/2008, Vol. 93 Issue 15, p151101
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report on liquid-based tunable microlenses actuated by infrared (IR) light. Multiple micropost structures, made of IR light-responsive hydrogel with entrapped gold nanoparticles, are photopatterned around a lens aperture. The volumetric change in the hydrogel, controlled by IR light, regulates the curvature of a liquid-liquid interface forming the microlens at the aperture and its focal length. The focal length of the microlens can be tuned from -17.4 mm to +8.0±0.4 mm in seconds under IR irradiation. This microlens can be integrated into optical systems, for instance, for fiber endoscopy.
ACCESSION #
34984775

 

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