Hemicylindrical and toroidal liquid microlens formed by pyro-electro-wetting
Anno: 2009
Autori: Miccio L., Paturzo M., Grilli S., Vespini V., Ferraro P.
Affiliazione autori: 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
Giornale/Rivista: OPTICS LETTERS
Volume: 34 (7) Da Pagina: 1075 A: 1077
Parole chiavi: Liquid Lens; Holography; DOI: 10.1364/OL.34.001075Citazioni: 26dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-05Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui