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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 25 — Dec. 6, 2010
  • pp: 26754–26759

Opto-electrophoretic detection of bio-molecules using conducting chalcogenide glass sensors

Zhiyong Yang, Megan K. Fah, Kelly A. Reynolds, Jonathan D. Sexton, Mark R. Riley, Marie-Laure Anne, Bruno Bureau, and Pierre Lucas  »View Author Affiliations


Optics Express, Vol. 18, Issue 25, pp. 26754-26759 (2010)
http://dx.doi.org/10.1364/OE.18.026754


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Abstract

Novel telluride glasses with high electrical conductivity, wide infrared transparency and good resistance to crystallization are used to design an opto-electrophoretic sensor for detection and identification of hazardous microorganisms. The sensor is based on an attenuated total reflectance element made of Ge-As-Te glass that serves as both an optical sensing zone and an electrode for driving the migration of bio-molecules within the evanescent wave of the sensor. An electric field is applied between the optical element and a counter electrode in order to induce the migration of bio-molecules carrying surface charges. The effect of concentration and applied voltage is tested and the migration effect is shown to be reversible upon switching the electric field. The collected signal is of high quality and can be used to identify different bacterial genus through statistical spectral analysis. This technique therefore provides the ability to detect hazardous microorganisms with high specificity and high sensitivity in aqueous environments. This has great potential for online monitoring of water quality.

© 2010 OSA

OCIS Codes
(160.2750) Materials : Glass and other amorphous materials
(300.6340) Spectroscopy : Spectroscopy, infrared
(280.1415) Remote sensing and sensors : Biological sensing and sensors

ToC Category:
Chalcogenide Glass

History
Original Manuscript: August 27, 2010
Revised Manuscript: October 6, 2010
Manuscript Accepted: October 6, 2010
Published: December 6, 2010

Virtual Issues
Chalcogenide Glass (2010) Optics Express

Citation
Zhiyong Yang, Megan K. Fah, Kelly A. Reynolds, Jonathan D. Sexton, Mark R. Riley, Marie-Laure Anne, Bruno Bureau, and Pierre Lucas, "Opto-electrophoretic detection of bio-molecules using conducting chalcogenide glass sensors," Opt. Express 18, 26754-26759 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-25-26754


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References

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