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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 20 — Sep. 27, 2010
  • pp: 20894–20899

Tunable photonic crystal based on capillary attraction and repulsion

Chia-Tsung Chan and J. Andrew Yeh  »View Author Affiliations

Optics Express, Vol. 18, Issue 20, pp. 20894-20899 (2010)

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A tunable photonic crystal (PhC) based on the capillary action of liquid is demonstrated in this work. The porous silicon-based photonic crystal (PSiPhC) features periodic porosity and is fabricated by electrochemical etching on 6” silicon wafer followed by hydrophobic modification on the silicon surface. The capillary action is achieved by varying the mixture ratio of liquids with high and low surface tension, yielding either capillary attraction or capillary repulsion in the nanoscale voids of the PSiPhC. By delivering the liquid mixture into and out of the voids of the PSiPhC, the reflective color of the PSiPhC can be dynamically tuned.

© 2010 OSA

OCIS Codes
(000.0000) General : General
(000.2700) General : General science

ToC Category:
Photonic Crystals

Original Manuscript: June 25, 2010
Revised Manuscript: September 3, 2010
Manuscript Accepted: September 12, 2010
Published: September 17, 2010

Chia-Tsung Chan and J. Andrew Yeh, "Tunable photonic crystal based on
capillary attraction and repulsion," Opt. Express 18, 20894-20899 (2010)

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