FACULTY Professor
Flexible Electronic Device Laboratory
Yei-Hwan Jung Professor

Circult Theory, The Physics of Solid State Electronics, Semiconductor Devices

Implantable Electronic Medical Devices

Ph.D., University of Wisconsin-Madison, USA
2021-Present Hanyang University, Department of Electronic Engineering, Assistant Professor
2019-2021 Northwestern University, Postdoctoral Research Associate
2017-2019 Sungkyunkwan University, Postdoctoral Research Associate

Flexible Electronic Device Laboratory

We explore diverse electronic materials and systems for high-performance flexible electronics with characteristics that are comparable to or that exceed those of traditional electronics. Our research targets electronic platforms for flexible integrated circuits that operate at high frequency, speed, and power. 

1. Flexible electronic devices and stretchable transmission lines
Electronic devices operating at radio frequencies require careful design and fabrication due to the electromagnetic effects interacting with the surrounding environment. Our group studies these effects and explores techniques that lead to flexible semiconductor devices operating at the next wave of connectivity technology (beyond 5G). Ordinary metal interconnects cannot carry currents in radio frequencies, as energy in these levels radiate off as waves, requiring specialized designs for minimizing loss. We are interested in developing such components in flexible and stretchable formats for their use with high-frequency flexible devices towards all-flexible state-of-the-art integrated circuits.
2. Bio-integrated wearable and implantable electronics
Our flexible electronics technology overcomes the mechanical mismatch between biological systems (soft and curvilinear) and traditional semiconductor devices (rigid and planar). We seek to implement our technology into wearable and implantable applications, ranging from skin-attachable haptics for virtual reality to neural implants for brain-computer interface.


3. Eco-friendly biodegradable electronics
Conventional electronics are typically made of non-renewable, non-biodegradable, and sometimes toxic materials. We are interested in creating high-performance flexible electronics based on inorganic semiconductors combined with biodegradable, ecofriendly substrate materials for potential replacement of traditional devices.