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Overview
Micromirror chemical sensors are
constructed by coating the end of
an optical fiber waveguide with a
chemically-sensitive film that
changes reflectivity upon exposure
to a chemical of interest. This
device enables remote monitoring
of chemical concentration,
operates in electrically-noisy
environments, and does not
constitute an ignition hazard.
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Applications include monitoring
hydrogen levels in transformer oil
to indicate breakdown and
detecting oxidizing compounds in
the Martian soil and atmosphere.
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Chemically-sensitive film deposited on end of optical fiber
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Gas/vapor absorption by film changes optical reflectivity
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Enables remote chemical detection
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Applications
- Transformer breakdown (Harley)
- Planetary chemical analysis (JPL)
- Semiconductor tool diagnostics (Sematech)
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