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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 9 — Aug. 28, 2012

Antireflective “moth-eye” structures on tunable optical silicone membranes

Robert Brunner, Bettina Keil, Christoph Morhard, Dennis Lehr, Jan Draheim, Ulrike Wallrabe, and Joachim Spatz  »View Author Affiliations


Applied Optics, Vol. 51, Issue 19, pp. 4370-4376 (2012)
http://dx.doi.org/10.1364/AO.51.004370


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Abstract

Flexible silicone membranes are key components for tunable optical lenses. The elastic operation of the membranes impedes the use of classical layer systems for an antireflective (AR) effect. To overcome this limitation, we equipped optical elastomer membranes with “moth-eye” structures directly in the flexible silicone substrate. The manufacturing of the AR structures in the flexible membrane includes a mastering process based on block copolymer micelle nanolithography followed by a replication method. We investigate the performance of the resulting AR structures under strain of up to 20% membrane expansion. A significant transmittance enhancement of up to 2.5% is achieved over the entire visible spectrum, which means that more than half of the surface reflection losses are compensated by the AR structures.

© 2012 Optical Society of America

OCIS Codes
(310.1210) Thin films : Antireflection coatings
(050.6624) Diffraction and gratings : Subwavelength structures
(240.3990) Optics at surfaces : Micro-optical devices
(110.1080) Imaging systems : Active or adaptive optics

ToC Category:
Diffraction and Gratings

History
Original Manuscript: March 15, 2012
Revised Manuscript: April 30, 2012
Manuscript Accepted: May 2, 2012
Published: June 26, 2012

Virtual Issues
Vol. 7, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Robert Brunner, Bettina Keil, Christoph Morhard, Dennis Lehr, Jan Draheim, Ulrike Wallrabe, and Joachim Spatz, "Antireflective “moth-eye” structures on tunable optical silicone membranes," Appl. Opt. 51, 4370-4376 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-51-19-4370

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