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Journal Article
Electrically Tunable Binary Phase Fresnel Lens Based on a Dielectric Elastomer Actuator
- Authors
- Suntak Park, Bongje Park, Saekwang Nam, Sungryul Yun, Seung Koo Park, Seongcheol Mun, Jeong Mook Lim, Yeonghwa Ryu, Seok Ho Song, Ki-Uk Kyung
- Issue Date
- 2017-10
- Citation
- Optics Express, v.25, no.20, pp.23801-23808
- ISSN
- 1094-4087
- Publisher
- Optical Society of America(OSA)
- Language
- English
- Type
- Journal Article
- Abstract
- We propose and demonstrate an all-solid-state tunable binary phase Fresnel lens with electrically controllable focal length. The lens is composed of a binary phase Fresnel zone plate, a circular acrylic frame, and a dielectric elastomer (DE) actuator which is made of a thin DE layer and two compliant electrodes using silver nanowires. Under electric potential, the actuator produces in-plane deformation in a radial direction that can compress the Fresnel zones. The electrically-induced deformation compresses the Fresnel zones to be contracted as high as 9.1% and changes the focal length, getting shorter from 20.0 cm to 14.5 cm. The measured change in the focal length of the fabricated lens is consistent with the result estimated from numerical simulation.
- KSP Keywords
- All-solid-state, Dielectric elastomer(DE), Dielectric elastomer actuator(DEA), Focal length, Fresnel Zone Plate, In-plane deformation, Numerical simulations, Silver nanowires(AgNWs), compliant electrodes, electric potential, electrically tunable
This work is distributed under the term of Creative Commons License (CCL)
(CC BY)
(CC BY)
