N. L. Jarvis

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A small glass capillary tube was fitted with a light-emitting diode and a phototransistor detector to form a multiple-reflecting optical waveguide device. When the capillary was coated with a thin solid film composed of an oxazine perchlorate dye, the device was demonstrated to be capable of reversibly sensing ammonia vapors. Ammoniavapor concentrations(More)
A vapor-sensing method has been developed which is compatible with monolithic silicon microelectronics technology. Specifically, electronic conductance changes caused by vapor interactions with very thin films of organic semiconductors are shown to be sensitive, reproducible, rapid, and stable chemical detectors. Functionalized copper phthalocyanine(More)
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