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 at Samsung Display in Korea as a senior engineer, 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 and/or 3D printed structures, as well as their applications in energy devices, medical devices, and wearable bioelectronics. He is the recipient of Hanwha Non-Tenured Faculty Award in 2015 for his contributions in polymer nanocomposites.
My research program focuses on the fundamental polymer physics of tough hydrogels and elastomers and their applications in electronic devices for energy and biomedical applications. Tough hydrogels, synthetic water-containing polymers that mimics superior mechanical properties of natural hydrogels such as muscles and cartilages, draw tremendous applications in unprecedented applications, such as bioimplantable electronics, sensors/actuators in soft machines, surgical glues, and gel electrolytes for energy storage devices. The fundamental polymer science, mostly based on the discipline of polymer physics, provides understanding of working principles of these important engineering materials (for example, what is the molecular mechanism of dramatic toughening of these soft polymeric materials or how do water molecules behave at freezing temperature when they interact with polymer chains and salt ions). These understanding provides the material design criteria for important energy and biomedical applications. In addition, tough hydrogel and advanced elastomer’s soft and resilient mechanical properties and self-healing ability enable many unforeseen applications in Internet-of-Things (IoT) and wearable healthcare technologies.
My program also focus on biomedical applications of flexible and printed electronics by developing wearable technologies. Polymer and 2D material based coating techniques for fabric based electronics is also an actively ongoing direction.
Keywords: Tough hydrogels, Elastomers, Soft bioelectronics, Flexible and Printed electronics, Renewable resources, Polymer physics, Nanocomposites, Functional soft materials
Oral presentation of technical material. Graded on a pass/fail basis. Prerequisite: CME 481. Credit may not be obtained in this course if previous credit has been obtained for CH E 483.Winter Term 2021
Techniques for characterization of materials. Elements of crystallography. Optical microscopy and image analysis, diffraction techniques, electron microscopy, surface science techniques, wet chemical techniques, non-destructive characterization, emerging techniques. Prerequisite: MAT E 202 or consent of Department.Winter Term 2021
Classical mechanics and its limitations; basic quantum mechanics; band theory; band diagrams for metals, insulators; Semiconductor and dielectric materials, piezoelectrics and thermoelectrics, and magnetic materials; Intrinsic and doped semiconductors; Optical properties of materials; Light-matter interactions, Prerequisite: PHYS 130, MAT E 202, or by consent of instructor.Fall Term 2020
Band theory and solid state properties. Thin film growth at the nanoscale. Semiconductors and dielectric materials, piezoelectrics and thermoelectrics. Semiconductors, doping, p-n junctions, solar cells. Thermoelectric materials and the Seebeck, Thomson, and Peltier Effects. Optical and electrical property measurement.Fall Term 2020