Axisymmetrical resonance modes in an electrowetting optical lens
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 (Δρ = 250 kg/m3) will exhibit observable Bessel modes on the liquid–liquid interface. An electrowetting lens filled with density matched liquids (Δρ = 4 kg/m3) is robust to external axial vibration and is shown to be useful in mitigating the effect of vibrations in an optical system.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 15, 2023
- Source ID
- 10.1063/5.0141787
Entities
People
- Eduardo J. Miscles
- Juliet T. Gopinath
- Mohammad Zohrabi Alaei
- Omkar D Supekar
- Victor Bright
- Wei Yang Lim
Organizations
- National Institutes of Health
- National Science Foundation
- Office of Naval Research
- University of Colorado