Integration of Light and Temperature Sensing Elements for Combined Visual and Tactile Measurement of Resin Compounds

In this study, we designed and fabricated a sensor integrating a heater and a resistance temperature detector for temperature detection and a photoresistor for light detection on a single chip, aiming at the combined measurement of tactile sensation, cold-warm sensation and color of a product. As a result, we confirmed the differences in thermal conductivity and optical transmittance. We also confirmed the difference in hardness using a tactile sensor.