[18a-P05-1~32] 12.3 Functional Materials and Novel Devices

[18a-P05-11] Flexible Thin-Film Humidity Sensor for Monitoring Transpiration Activity of Plant

〇Tatsuhiro Horii¹, Tatsuhiro Horii¹, Hajime Fujita¹, Zichen Gao¹, Takashi Sato², Eiji Iwase³, Toshinori Fujie¹ (1.Sch. Life Sci. and Tech., Tokyo Tech., 2.SSRC, AIST, 3.Fac. Sci. and Eng., Waseda Univ.)

Keywords:

humidity sensor,transpiration,polyaniline

In this study, a thin-film humidity sensor based on the humidity dependence of the resistance of conductive polymers was developed and applied to measure plant transpiration activity. We investigated the effect of heat treatment for the conductive composite layer composed of self-doped polyaniline and polyvinyl alcohol on the tolerance to water and measured the resistance change of the sensor attached to the leaf surface during the turning on and off LED lights.