Lee Inho, Kim Ji Hwan, Kim Youngseok, Shin Dongjoon, Lee Hyeongbeom, Won Jonghyun, Kang Keehoon, Choi Jun-Gyu, Yoon Myung-Han, Park Sungjun
Department of Intelligence Semiconductor, Ajou University, Suwon, Gyeonggi-do, 16499, Republic of Korea.
Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea.
Adv Mater. 2025 Jan;37(4):e2410444. doi: 10.1002/adma.202410444. Epub 2024 Nov 3.
Skin-conformal organic electrochemical transistors (OECTs) have attracted significant attention for real-time physiological signal monitoring and are vital for health diagnostics and treatments. However, mechanical harmonization amid the inherent dynamic nature of the skin surface and the acquisition of intrinsic physiological signals are significant challenges that hinder the integration of the ultimate skin interface. Thus, this study proposes a novel 4-terminal (4-T) vertical Corbino OECT, exhibiting high transconductance (>400 mS) and offering remarkable resilience and operational stability at an extremely low voltage of 10 mV (1.9% of minimal current change after 10 biasing cycles and endurance up to 10 cycles of repetitive deformation with a 5 µm bending radius). Consequently, ultralow-power, motion-resistant epidermal electrocardiogram, electromyogram, and electrooculogram sensors are developed with an exceptional signal-to-noise ratio of 40.1 dB. The results of this study present a significant stride in non-invasive, skin-interfaced health-monitoring technologies and herald a new era in integrative health technologies.
皮肤贴合式有机电化学晶体管（OECTs）在实时生理信号监测方面备受关注，对健康诊断和治疗至关重要。然而，皮肤表面固有的动态特性与获取内在生理信号之间的机械协调是阻碍最终皮肤接口集成的重大挑战。因此，本研究提出了一种新型的四端（4-T）垂直科尔比诺OECT，其跨导高（>400 mS），在10 mV的极低电压下具有显著的弹性和操作稳定性（10个偏置周期后最小电流变化的1.9%，在5 µm弯曲半径下可承受高达10个周期的重复变形）。因此，开发出了超低功耗、抗运动的表皮心电图、肌电图和眼电图传感器，其信噪比高达40.1 dB。本研究结果在无创、皮肤接口健康监测技术方面迈出了重要一步，开创了综合健康技术的新纪元。
