Presenter：Wonryung Lee (Seoul National University)
Topic：Soft Implantable Devices for Continuous Biochemical Monitoring and Wireless Optical Communication
Time：10:30 AM, October 14th
Location：909-B
Abstract:：
Signaling of biochemical and bioelectrical activities on biological interfaces plays a crucial role in acquiring precise and continuous physiological information. Recent progress in flexible and implantable medical electronics has enabled stable sensor attachment to complex internal tissues through mechanically adaptive designs. In this work, we present conformable organic electronic platforms designed for diverse bioapplications. The conformability of our devices is achieved through two approaches: ultra-thin structural design and the use of materials with intrinsically low Young’s modulus. Building upon this foundation for mapping bioelectrical signals in organs such as the brain and heart, we expand our platforms toward advanced biochemical sensing. Specifically, we utilized conformable substrates to fabricate microneedle arrays and implantable devices capable of continuously monitoring biochemical markers in interstitial fluids and sweat. Furthermore, to achieve untethered and continuous operation in these sensing platforms, we integrated light-emitting diodes (LEDs) for optical information transduction, alongside distinctive circuit architectures for wireless power and data transmission, including inductive coupling and self-powered systems. This study highlights the potential of soft, bio-integrated platforms as a versatile foundation for next-generation implantable and wearable healthcare systems.
Biography：
Wonryung Lee is an Associate Professor in the School of Transdisciplinary Innovations and the Department of Biomedical Sciences at Seoul National University. He received his BSc in Applied Physics from Nagoya University (2013), and his MS and PhD in Electrical Engineering from The University of Tokyo (2018). Before joining SNU, he served as a Senior Researcher at KIST and an Associate Professor at UST (2020~2025). His research focuses on next-generation organic semiconductor technologies, soft electronics, and bio-integrated platforms. His work targets the development of stretchable devices, microneedle systems, and active biosensors for continuous clinical monitoring and advanced healthcare applications.
Contact：Prof. Wei Liu
