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Axisymmetrical resonance modes in an electrowetting optical lens.
- 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