Hemicylindrical and toroidal liquid microlens formed by pyro-electro-wetting
Authors: Miccio L., Paturzo M., Grilli S., Vespini V., Ferraro P.
Autors Affiliation: CNR – Istituto Nazionale di Ottica Applicata, Via Campi Flegrei 34, 80078 Pozzuoli (NA) Italy
Abstract: We found that by opportune functionalization of a polar dielectric substrate, a self-arrangement of hemi-cylindrical or toroidal-shaped liquid droplets can be obtained. The process takes place when a thermal stimulus is provided to a poled substrate whose surface is covered by an oily substance layer. Liquid droplet self-arrangement is due to the pyroelectric effect, and interferometric characterization of the droplets is also reported. We investigated this open microfluidic system for exploring the possibility to obtain liquid cylindrical microlens with variable focal length. Liquid microtoroidal structures arrays are also realized. They could find application as resonant liquid microcavities for whispering gallery modes. (C) 2009 Optical Society of America
Journal/Review: OPTICS LETTERS
Volume: 34 (7) Pages from: 1075 to: 1077
KeyWords: Liquid Lens; Holography; DOI: 10.1364/OL.34.001075Citations: 22data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2020-05-31References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here