Hydrogels, Elastomers and Their Composites with Textiles in Healthcare and Energy Devices
Associate Professor Hyun-Joong Chung
Chemical and Materials Engineering, University of Alberta
When: August 14, 2019 | 9:30 AM
Where: Kaiser 2020 | 2332 Main Mall
Abstract: Wearable healthcare systems require sensing units that are often in contact with skin, as well as embedded circuitry to enable signal processing and transmittance and energy devices to enabling their operations, while mandating the maximal comfort for wearers. Textile-based electronics, known as ‘e-textiles’, offer a platform technology that allows comfort for patients. Another material system of interest is ‘tough hydrogel’, specifically charge-balanced polyampholyte hydrogels that have unique advantages such as antipolyelectrolyte effect and self-healing ability. In this presentation, below topics will be covered as constituting components of wearable healthcare device system: (1) Structure–property relations of tough polyampholyte hydrogels and their applications in (i) thermosensitive smart windows, (ii) flexible and self-healing supercapacitors,and (iii) pressure and temperature sensor arrays. (2) Elastomer composite with textiles for a normothermic heart transportation device (3) E-textile patches and wearable system for sEMG and EEG applications.
Biography: Hyun-Joong Chung is an Associate Professor of Chemical and Materials Engineering at the University of Alberta. He received B.S. from KAIST and Ph.D. from the University of Pennsylvania. After graduation, he worked for 3 years as a senior engineer at Samsung
Display in Korea, where he contributed in developing prototype large-area OLED TVs, followed by a postdoctoral training on stretchable electronics at the University of Illinois at Urbana-Champaign. His current research interests are on soft materials – specifically on hydrogels and elastomeric polymers and their composites with textiles, as well as their applications in energy devices and wearable bioelectronics. He is the recipient of Hanwha Non-Tenured Faculty Award (2015; contributions in polymer nanocomposites).