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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 10 — Apr. 1, 2010
  • pp: 1865–1869

Optical monitoring of anchoring change in vertically aligned thin liquid crystal film for chemical and biological sensor

Yang Zou, Jun Namkung, Yongbin Lin, and Robert Lindquist  »View Author Affiliations

Applied Optics, Vol. 49, Issue 10, pp. 1865-1869 (2010)

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A significant advance in sensitivity of liquid-crystal (LC)-based chemical and biological sensors can be achieved by actively monitoring anchoring energy change. We simulate the deformation of a LC director with different anchoring energies using the finite element method and the optical properties of the LC film using the finite-difference time-domain method. Polarizing micrographs are collected and compared with simulated textures. Measurement of optical transmission is used to monitor the anchoring change. Experimental and simulation results both demonstrate the optical method can effectively monitor the surface anchoring change due to the presence of targeted analytes.

© 2010 Optical Society of America

OCIS Codes
(230.2090) Optical devices : Electro-optical devices
(230.3720) Optical devices : Liquid-crystal devices
(280.1415) Remote sensing and sensors : Biological sensing and sensors
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Optical Devices

Original Manuscript: November 20, 2009
Revised Manuscript: March 3, 2010
Manuscript Accepted: March 5, 2010
Published: March 26, 2010

Virtual Issues
Vol. 5, Iss. 8 Virtual Journal for Biomedical Optics

Yang Zou, Jun Namkung, Yongbin Lin, and Robert Lindquist, "Optical monitoring of anchoring change in vertically aligned thin liquid crystal film for chemical and biological sensor," Appl. Opt. 49, 1865-1869 (2010)

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