Creation of aspheric interfaces on an electrowetting liquid lens using surface oscillations

Matthias Strauch, Peter Somers, Florian Bociort, Paul Urbach

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)
21 Downloads (Pure)

Abstract

A technique to create aspheric surface shapes on commercially available electrowetting liquid lenses is demonstrated. Based on a previously published surface oscillation model a technique using a Hankel transform is proposed and tested experimentally. An alternating actuation voltage is applied to the liquid lens to stimulate surface oscillations, that temporarily add up to the desired surface shape. The voltage signal can be repeated at video rate. The measurements were taken with a Mach-Zehnder interferometer and confirm the previous results. The capabilities and limitations of the proposed method are demonstrated using the examples of a Bessel surface, spherical aberration, an axicon, and a top hat structure.
Original languageEnglish
Article number115224
Number of pages7
JournalAIP Advances
Volume8
Issue number11
DOIs
Publication statusPublished - 2018

Keywords

  • Fluid dynamics: interfacial flows
  • Instrumentation: optical instruments
  • Microfluidics: wetting
  • Optics: optical devices and systems
  • OA-Fund TU Delft

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