Associate Professor of Chemical Engineering
Research Areas
Soft and Stretchable Electronics & Energy Storage Devices
Research Interests
Soft and Stretchable Electronics Using Liquid Metals
Liquid metals, especially gallium and its alloys, are accompanied by a number of intriguing properties: high surface tension, metallic electrical and thermal conductivity, phase transition, low melting temperature and low viscosity in combination with their low toxicity enabling them to be used in wearable devices. My research group focuses on developing novel strategies to pattern these liquid metals onto stretchable substrates to realize soft and stretchable circuits. We also focus on designing novel strategies to fabricate stretchable core shell fibers, variable stiffness metamaterials and high thermal conductivity composites targeting various applications ranging from wearable sensors to energy harvesting devices.
Conjugated Polymers for Energy Storage Devices
We are interested in the design and synthesis of π-conjugated functional materials with unique optoelectronic properties. Mainly, such materials can be applied for optoelectronic devices such as organic field-effect transistors (OFETs) and energy storage (Supercapacitors and Battery) devices. Our research focuses on molecular engineering to fine tune the energy levels (HOMO and LUMO) of the conjugated polymers, simultaneously to improve electrooptical, charge transport and overall device performance.
Selected Publications
1. S. K. Pati, D. Patra*, S. Muduli, S. Mishra, S. Park*, “Energy Storage Application of Conducting Polymers Featuring Dual Acceptors: Exploring Conjugation and Flexible Chain Length Effects”, Small, 2023, 2300689.
2. P. Bhuyan, Y. Wei, M. Choe, D. Cho, S. Lee, S. Park*, “Liquid-Metal-Microdroplets-Incorporated Ultrasoft Dielectric Gel toward Stretchable and Healable Waste-Energy-Harvesting Devices”, Nano Energy, 2023, 108, 108214.
3. S. Kim, S. Lee, P. Bhuyan, Y. Wei, S. Kim, K. Shimizu, J. Shintake, S. Park*, “Stretchable and Soft Electroadhesion and Capacitive Sensors Enabled by Spider Web-Inspired Interdigitated Liquid Metal Subsurface Microwires”, Chemical Engineering Journal, 2023, 456, 141018.
4. Q. T. Nguyen, U. T. Nakate*, J. Chen, S. Park, S. Park*, “Evolution of Novel Nanostructured MoCoFe-based Hydroxides Composites Toward High-Performance Electrochemical Applications: Overall Water Splitting and Supercapacitor”, Compos. B. Eng., 2023, 252, 110528
5. P. Bhuyan, Y. Wei, D. Cho, U. T. Nakate, S. Kim, S. Lee, M. Choe, H. Jeon*, S. Park*, “Multifunctional Ultrastretchable and Ultrasoft Electronics Enabled by Uncrosslinked Polysiloxane Elastomers Patterned with Rheologically Modified Liquid Metal Electrodes: Beyond Current Soft and Stretchable Electronics”, Chemical Engineering Journal, 2023, 453, 139832.
6. S. Kim, S. Kim. K. Hong, M. D. Dickey, S. Park*, “Liquid Metal Coated Magnetic Particles Toward Writable, Non-Wettable, Stretchable Circuit Boards and Directly Assembled Liquid Metal-Elastomer Conductors”, ACS Appl. Mater. Interfaces, 2022, 14, 32, 37110–37119.
7. Y. Wei, S. Kim, S. Kim, P. Bhuyan, K. Hong, D. T. Tran, K. -U. Jeong, S. Park*, “Liquid Metal Fillers Enabled Remote Actuating and Localizing Reversible Wrinkles on Polymeric Bilayer”, Appl. Mater. Today, 2022, 28, 101537.
8. V. K. Singh, U. T. Nakate, P. Bhuyan, J. Chen, D. T. Tran, S. Park*, “Mo/Co Doped 1T-VS2 Nanostructures as a Superior Bifunctional Electrocatalyst for Overall Water Splitting in Alkaline Media”, J. Mater. Chem. A, 2022, 10, 9067-9079.
9. P. Bhuyan, Y. Wei, D. Sin, J. Yu, C. Nah, K. -U. Jeong, M. D. Dickey, S. Park*, “Soft and Stretchable Liquid Metal Composites with Shape Memory and Healable Conductivity”, ACS Appl. Mater. Interfaces, 2021, 13, 24, 28916-28924.
Professional Experience
– 전북대학교 고분자나노공학과 교수 (2018-2023)
– 삼성전자 글로벌기술센터 책임연구원 (2017-2018)
– 노스캐롤라이나 대학교 박사 후 연구원 (2016-2017)
– 현대자동차 재료개발센터 책임연구원 (2013-2016)