New spectroelectrochemical sensor

Yining Shi; Andrew F. Slaterbeck; Saroj Aryal; Carl J. Seliskar; William R. Heineman; Thomas H. Ridgway; Joseph H. Nevin

doi:10.1117/12.304388

26 March 1998 New spectroelectrochemical sensor

Yining Shi, Andrew F. Slaterbeck, Saroj Aryal, Carl J. Seliskar, William R. Heineman, Thomas H. Ridgway, Joseph H. Nevin

Author Affiliations +

Proceedings Volume 3258, Micro- and Nanofabricated Structures and Devices for Biomedical Environmental Applications; (1998) https://doi.org/10.1117/12.304388
Event: BiOS '98 International Biomedical Optics Symposium, 1998, San Jose, CA, United States

Abstract

A new type of spectroelectrochemical sensor that embodies tow modes of instrumental selectivity in addition to selective partitioning through an applied film barrier is described. The sensor consists of a planar optical substrate/electrode coated with a chemically-selective film. SEnsing is based on the change in the attenuation of light passing through the guided wave substrate which accompanies a chemical reaction of an analyte induced by electromodulation. Threefold selectivity for a chosen analyte relative to other environmental components is obtained by the choice of coating material, the electrolysis potential, and the wavelength for optical monitoring. The sensor concept is demonstrated with an indium tin oxide coated glass guided wave device that has been over-coated with a sol-gel derive charge-selective thin film. One such selective coating used was a charge-selective sol-gel processed Nafion-SiO₂ composite film. Prototype analytes have been used to demonstrate that the change in the transmittance of the waveguide resulting from electrochemical oxidation/reduction can be used to quantify an analyte.

Citation Download Citation

Yining Shi, Andrew F. Slaterbeck, Saroj Aryal, Carl J. Seliskar, William R. Heineman, Thomas H. Ridgway, and Joseph H. Nevin "New spectroelectrochemical sensor", Proc. SPIE 3258, Micro- and Nanofabricated Structures and Devices for Biomedical Environmental Applications, (26 March 1998); https://doi.org/10.1117/12.304388

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available