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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 9 — May. 1, 2012
  • pp: 1406–1408

Ultralow-refractive-index optical thin films through nanoscale etching of ordered mesoporous silica films

Fangting Chi, Lianghong Yan, Hongwei Yan, Bo Jiang, Haibing Lv, and Xiaodong Yuan  »View Author Affiliations


Optics Letters, Vol. 37, Issue 9, pp. 1406-1408 (2012)
http://dx.doi.org/10.1364/OL.37.001406


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Abstract

A great deal of intensive research has been conducted to obtain high-quality transparent ultralow-refractive-index and ultralow-dielectric-constant thin films for microptics and microelectronics applications. Here, we report a simple procedure to prepare highly porous silica thin films with high optical quality and water resistance through nano-etching of mesoporous silica films followed by fluoroalkylsilane surface modification. The films possess an ultralow refractive index of 1.03 (800 nm) and an ultralow dielectric constant of 1.30 (100 kHz), to our knowledge the lowest values ever reported in thin film materials. The films are superhydrophobic (water contact angle=156deg), thus exhibit high moisture stability.

© 2012 Optical Society of America

OCIS Codes
(160.5320) Materials : Photorefractive materials
(310.6860) Thin films : Thin films, optical properties

ToC Category:
Materials

History
Original Manuscript: January 20, 2012
Manuscript Accepted: February 22, 2012
Published: April 19, 2012

Citation
Fangting Chi, Lianghong Yan, Hongwei Yan, Bo Jiang, Haibing Lv, and Xiaodong Yuan, "Ultralow-refractive-index optical thin films through nanoscale etching of ordered mesoporous silica films," Opt. Lett. 37, 1406-1408 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-9-1406

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