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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 7 — Apr. 1, 2009
  • pp: 1075–1077

Hemicylindrical and toroidal liquid microlens formed by pyro-electro-wetting

Lisa Miccio, Melania Paturzo, Simonetta Grilli, Veronica Vespini, and Pietro Ferraro  »View Author Affiliations

Optics Letters, Vol. 34, Issue 7, pp. 1075-1077 (2009)

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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.

© 2009 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(160.3730) Materials : Lithium niobate
(230.3990) Optical devices : Micro-optical devices
(090.1995) Holography : Digital holography

ToC Category:
Integrated Optics

Original Manuscript: January 16, 2009
Revised Manuscript: February 18, 2009
Manuscript Accepted: February 19, 2009
Published: March 26, 2009

Lisa Miccio, Melania Paturzo, Simonetta Grilli, Veronica Vespini, and Pietro Ferraro, "Hemicylindrical and toroidal liquid microlens formed by pyro-electro-wetting," Opt. Lett. 34, 1075-1077 (2009)

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