Sungjun Park

Sungjun Park

Associate professor, Ajou University

Prof. Sungjun Park is an Associate Professor in the Department of Electrical and Computer Engineering and the Department of Intelligence Semiconductor Engineering at Ajou University, Republic of Korea. He received his Ph.D. in Materials Science and Engineering from the Gwangju Institute of Science and Technology (GIST), Republic of Korea, in 2016. Following his doctoral studies, he conducted postdoctoral research at RIKEN in Japan and later worked as a Senior Researcher at the Samsung Advanced Institute of Technology (SAIT).

Prof. Park joined Ajou University in 2020, where his research focuses on skin-conformal electronic materials, flexible devices, and their integration for wearable sensors and bioelectronics. His interdisciplinary work bridges materials science, electrical engineering, chemical engineering, and biomedical applications, aiming to develop next-generation soft electronics for healthcare and human–machine interfaces.

Prof. Park has been widely recognized for his contributions to scientific research and innovation. In 2025, he was selected for the "Best Achievement" Award in the Top 100 Excellent National R&D Outcomes of 2024 by the Ministry of Science and ICT, Republic of Korea. That same year, he also received the Small Young Innovator Award from Wiley. Most notably, he was awarded the Order of Science and Technology Merit (과학기술포장, 科學技術褒章) by the Ministry of Science and ICT, one of the highest national decorations conferred for exceptional achievements in science and technology.

Title

Ultra-flexible skin-compatible organic optoelectronics for wearable application

Abstract：

Ultra-conformable organic optoelectronic devices are emerging as promising platforms for next-generation wearable and biomedical technologies. Their intrinsic mechanical softness and compatibility with large-area, low-temperature fabrication techniques enable seamless integration with the human body. These features make them ideal candidates for applications such as skin-attachable sensors, soft energy harvesters, and bio-interfacing systems. However, a key challenge remains in achieving long-term mechanical durability while maintaining stable electronic and optical performance under repeated deformation. This work presents recent advances in materials and device architectures that address this challenge. Strategies include the development of stretchable semiconducting and conducting polymers, as well as mechanically adaptive multilayer structures that mitigate strain concentration. Experimental results demonstrate that these systems retain functional stability under dynamic mechanical stress, including bending, stretching, and torsion. The functional relevance of these devices is further validated through their application in real-time physiological monitoring, motion tracking, and human–machine interfaces. The findings contribute to a deeper understanding of the mechanical-electronic coupling in soft systems and offer practical design principles for future body-integrated electronics.