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Axisymmetrical resonance modes in an electrowetting optical lens.

Authors :
Miscles, Eduardo J.
Lim, Wei Yang
Supekar, Omkar D.
Zohrabi, Mo
Gopinath, Juliet T.
Bright, Victor M.
Source :
Applied Physics Letters; 5/15/2023, Vol. 122 Issue 20, p1-6, 6p
Publication Year :
2023

Abstract

Electrowetting-based adaptive optics are of great interest for applications ranging from confocal microscopy to LIDAR, but the impact of low-frequency mechanical vibration on these devices remains to be studied. We present a simple theoretical model for predicting the resonance modes induced on the liquid interface in conjunction with a numerical simulation. We experimentally confirm the resonance frequencies by contact angle modulation. They are found to be in excellent agreement with the roots of the zero-order Bessel functions of the first kind. Next, we experimentally verify that external axial vibration of an electrowetting lens filled with density mismatched liquids (Δ ρ = 250 kg/m<superscript>3</superscript>) will exhibit observable Bessel modes on the liquid–liquid interface. An electrowetting lens filled with density matched liquids (Δ ρ = 4 kg/m<superscript>3</superscript>) is robust to external axial vibration and is shown to be useful in mitigating the effect of vibrations in an optical system. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00036951
Volume :
122
Issue :
20
Database :
Complementary Index
Journal :
Applied Physics Letters
Publication Type :
Academic Journal
Accession number :
163823117
Full Text :
https://doi.org/10.1063/5.0141787