[17p-C31-1~20] 12.7 Biomedical Engineering and Biochips

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[17p-C31-14] Improvement of operating voltage conditions of ion image sensor that enables optical signal rejection

〇Ryoga Sato¹, Runa Honjo¹, Yoshiko Noda¹, Daisuke Akai¹, Takeshi Hizawa¹, Yasuyuki Kimura¹, Yong.Joon Choi¹, Kazuhiro Takahashi¹, Kazuaki Sawada¹, Toshihiko Noda¹ (1.Toyohashi Univ. of Tech.)

Keywords:

ion image sensor,pH measurement,multimodal sensing

Our laboratory group has developed a plant-insertable pH image sensor that can measure pH in plants under light irradiation. However, since the operating reference voltage of the conventional sensor is around 3.5 V, this sensor may cause a potential difference of 3.5 V to the plant during insertion into a plant. Therefore, we improved the sensor to operate without a potential difference with the plant and fabricated a sensor that operates at 0V. Measurement results showed that we succeeded in pH imaging at an operating reference voltage of 0V, a sensor with an improved operating reference voltage has been fabricated.