[TuA4] Organic Devices

6:00 PM - 6:15 PM JST(9:00 AM - 9:15 AM UTC)

[TuA4-05] Low-Noise Wearable Sweat Sensing with Flexible Complementary Organic Circuits

〇Takafumi Uemura^1,2, Shu Ikarimoto^1,3, Mihoko Akiyama^1,3, Naoko Namba¹, Shin-ichi Wakida¹, Teppei Araki^1,3, Tsuyoshi Sekitani^1,3 (1. SANKEN, The Univ. of Osaka (Japan), 2. IST, The Univ. of Osaka (Japan), 3. Department of Applied Physics, The Univ. of Osaka (Japan))

Wearable sweat sensors, which can measure sweat components noninvasively, have been actively developed because they can quantify daily physiological activity. Conventional sweat sensors are highly flexible and stretchable for human skin. However, they require heavy and rigid circuits near the sensor, as a result, they lack flexibility and are easily affected by noise. Here, by attaching the flexible, thin-film, and lightweight organic circuits, we succeed in developing lighter and low-noise sweat sensors. Our low-noise sweat sensors are capable of reducing motion artifacts and power line noise by more than 98 %. Furthermore, the continuous Na⁺ and K⁺ concentration data, measured in the subject experiments, were of the same quality as commercially available discrete measuring instruments. Our achievement will open up new possibilities for next-generation preventive medicine and remote medical care.