Published in Telemedicine Business Week, March 10th, 2004
Described in the Journal of Chemical Physics, the NIST-patented technique may be useful for development of miniaturized chemical sensors, as well as for fundamental surface science studies.
The technique (a variation on cavity ring-down spectroscopy) relies on laser light reflecting and circulating inside a prism-like optical resonator. The time it takes the light to diminish (or ring down) changes depending on whether specific...
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