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Optical chemical sensing employing surface plasmon resonance

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2 Author(s)
L. M. Zhang ; Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK ; D. Uttamchandani

An optical sensor based on the phenomenon of light-excited surface plasmon resonance has been investigated to measure liquid chemical concentrations. A white light source is used to excite surface plasmon waves at a metal/analyte interface. The wavelength of maximum absorption in th reflected light depends uniquely on the refractive index of the analyte.<>

Published in:

Electronics Letters  (Volume:24 ,  Issue: 23 )