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Proceedings Paper

Nanometer optical fiber pH sensor
Author(s): Raoul Kopelman; Weihong Tan; Zhong-You Shi
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Paper Abstract

A thousandfold miniaturization of immobilized optical fiber sensors has been achieved by a near-field optical technique. This technology is based on nanofabricated optical fiber tips and near-field photoinitiated polymerization. Submicrometer pH sensors have been prepared by attaching a copolymer covalently to a silanized fiber tip surface. The sensors have demonstrated their high spatial resolving ability, excellent detection limit (zeptomoles), very fast response time (milliseconds) and good stability. The potential applications include concentration profile measurements of cytoplasms, the monitoring of fast chemical and biological reactions and other microscopic operations.

Paper Details

Date Published: 30 April 1993
PDF: 6 pages
Proc. SPIE 1796, Chemical, Biochemical, and Environmental Fiber Sensors IV, (30 April 1993); doi: 10.1117/12.143510
Show Author Affiliations
Raoul Kopelman, Univ. of Michigan (United States)
Weihong Tan, Univ. of Michigan (United States)
Zhong-You Shi, Univ. of Michigan (United States)

Published in SPIE Proceedings Vol. 1796:
Chemical, Biochemical, and Environmental Fiber Sensors IV
Robert A. Lieberman, Editor(s)

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