APPARATUS AND METHOD FOR USING LIGHT TO ADJUST SENSITIVITY OF SILICON NANOWIRE SENSOR

摘要

Provided in the present invention are an apparatus and a method for using light to adjust the sensitivity of a silicon nanowire sensor, the apparatus comprising a silicon nanowire sensor used to output a sensitive signal for sensing a target object and convert the sensitive signal into an electrical signal, and a light source used to supply the silicon nanowire sensor with a preset illumination intensity; and an optical power regulator used to regulate the preset illumination intensity and a signal processor for performing signal processing and feedback. In the present apparatus, by means of arranging a power-adjustable light source at the top of a silicon nanowire sensor and changing the illumination conditions surrounding same, a function of adjusting the sensitivity thereof is implemented. In the present method, the varying response sensitivity of a silicon nanowire sensor under different illumination intensities is utilized, and the sensitivity of the sensor is adjusted by means of setting an appropriate illumination condition. The present invention features a simple structure, convenient operation, and no device wear, and is able to implement quick and effective adjustment of the sensitivity of silicon nanowire sensors.