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evanescent |
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Rapid detection of Bacillus anthracis spores directly from powders with an evanescent wave fiber-optic biosensor. A tiny portion of the laser beam's energy leaks upward from the surface, generating what is called an evanescent wave. Tests of SatCon's evanescent wave surface detection optics system resulted in measurements of refractive index changes at the level of 10-8 over tens of minutes, a level that is significantly more sensitive than that which exists in commercially available devices. |
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