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This study reports on a PAS sensor that uses a highly sensitive pressure sensor composed of silicon piezoresistive cantilever to measure photoacoustic waves generated by far-infrared light, for ...

A compact spectrometer based on a mid-infrared optical sensor has been developed for high-precision and real-time measurement of water isotope ratios. The instrument uses laser absorption spectroscopy ...

A novel CO 2 non-dispersive infrared (NDIR) sensor using the mid-infrared (mid-IR) hollow fiber as a gas cell has been demonstrated. The mid-IR hollow fiber is chosen for its optimum transmission band ...