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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 5, Iss. 8 — Jun. 8, 2010

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)
http://dx.doi.org/10.1364/AO.49.001865


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Abstract

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

History
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

Citation
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)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-49-10-1865


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References

  1. V. K. Gupta and N. Abbott, “Design of surface for patterned alignment of liquid crystals on planar and curved substrates,” Science 276, 1533-1536 (1997). [CrossRef]
  2. J. J. Skaife and N. Abbott, “Influence of molecular-level interactions on the orientations of liquid crystals supported on surfaces presenting specially bound proteins,” Langmuir 17, 5595-5604 (2001). [CrossRef]
  3. J. Brake, M. Daschner, and N. Abbott, “Biomolecular interactions at phospholipids-decorated surfaces of thermotropic liquid crystals,” Science 302, 2094-2098 (2003). [CrossRef] [PubMed]
  4. T. Govindaraju, P. J. Bertrics, N. L. Abbott, and R. T. Raines, “Using measurements of anchoring energies of liquid crystals on surfaces to quantify proteins captured by immobilized ligands,” J. Am. Chem. Soc. 129, 11223-11231 (2007). [CrossRef] [PubMed]
  5. A. Abu-Abed, R. G. Lindquist, and Woo-Hyuck Choi, “Capacitive transduction for liquid crystal-based sensors, Part I: ordered system,” IEEE Sens. J. 7, 1617-1624 (2007). [CrossRef]
  6. A. Abu-Abed and R. G. Lindquist, “Capacitive transduction for liquid crystal-based sensors, Part II: partially disordered system,” IEEE Sens. J. 8, 1557-1564 (2008). [CrossRef]
  7. R. Shah and N. L. Abbott, “Principles for measurement of chemical exposure based on recognition-driven anchoring transitions in liquid crystals,” Science 293, 1296-1299 (2001). [CrossRef] [PubMed]
  8. I. W. Stewart, The Static and Dynamic Continuum Theory of Liquid Crystals (Taylor & Francis, 2004).
  9. D. W. Berreman, “Numerical modeling of twisted nematic devices,” Phil. Trans. R. Soc. London A 309, 203-216 (1983). [CrossRef]
  10. E. Willman, F. A. Fernandez, R. James, and S. E. Day, “Modeling of weak anisotropic anchoring of nematic liquid crystals in the Landau-de Gennes theory,” IEEE Trans. Electron Devices 54, 2630-2637 (2007). [CrossRef]
  11. I. C. Khoo, Liquid Crystal (Wiley, 2007). [CrossRef]
  12. A. Taflove and S. C. Hagness, Computational Electrodynamics (Artech House, 2000).
  13. I. Dierking, Textures of Liquid Crystals (Wiley-VCH, 2003). [CrossRef]

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