Detection of bio-molecules using conductive chalcogenide glass sensor

Zhiyong Yang, Megan K. Fah, Kelly A. Reynolds, Jonathan D. Sexton, Pierre Lucas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 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 bio-molecules through spectral analysis. This technique therefore provides the ability to detect hazardous microorganisms with high specificity and good sensitivity in aqueous environments.

Original languageEnglish (US)
Title of host publication2011 Int. Quantum Electr. Conf., IQEC 2011 Conf Lasers Electro-Optics, CLEO Pacific Rim 2011 Incorporating Australasian Conf. on Optics, Lasers Spectrosc. Australian Conf. Optical Fibre Technol.- Conf
Pages2026-2028
Number of pages3
DOIs
StatePublished - 2011
Event2011 International Quantum Electronics Conference, IQEC 2011 and Conference on Lasers and Electro-Optics, CLEO Pacific Rim 2011 - Sydney, NSW, Australia
Duration: Aug 28 2011Sep 1 2011

Publication series

Name2011 Int. Quantum Electron. Conf., IQEC 2011 and Conf. Lasers and Electro-Optics, CLEO Pacific Rim 2011 Incorporating the Australasian Conf. Optics, Lasers and Spectroscopy and the Australian Conf.

Other

Other2011 International Quantum Electronics Conference, IQEC 2011 and Conference on Lasers and Electro-Optics, CLEO Pacific Rim 2011
CountryAustralia
CitySydney, NSW
Period8/28/119/1/11

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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