[23p-E105-1~15] 12.7 Biomedical Engineering and Biochips

△ [23p-E105-10] Fabrication of plant insertable ion image sensor for the simultaneous visualisation of potassium and hydrogen ions

〇Taichi Yoshida¹, Kenta Sembo¹, Hideo Doi¹, Tomoko Horio¹, Seitaro Toda¹, Kotaro Takayama¹, Yong-joon Choi¹, Kazuhiro Takahashi¹, Kazuaki Sawada¹, Toshihiko Noda¹ (1.Toyohashi Univ.)

Keywords:Semiconductor imaging device, Ion sensitive membrane, Agricultural sensor

A K⁺ sensitive membrane was applied on a plant insertion type H⁺ image sensor based on CMOS image sensor technology. The vertical half of the sensor was masked with polyimide tape and the K⁺ sensitive membrane was applied to create a sensor with K⁺ and H⁺ pixels. The sensor was then characterized and found to be capable of measuring both K⁺ and H⁺. Finally, the sensor was inserted into the side shoots of tomatoes, and simultaneous imaging of K⁺ and H⁺ was successfully performed.