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Ji Su

Dr.  Ji Su

Research Engineer
Advanced Materials and Processing Branch
NASA Langley Research Center

Hampton VA 
United States

tel: +01 757-864-8336
fax: +01 757-864-8312
E-mail: ji.su-1@nasa.gov

Area of Expertise

Smart Materials And Related Technologies (SMART): Electroactive polymers and composites and their applications in advanced aerospace technology and bio-engineering/artificial muscles technology, materials and devices for smart systems, and nano-structured multifunctional materials


Dr. Ji Su is a Research Engineer at the Advanced Materials and Processing Branch, NASA Langley Research Center, Hampton, Virginia, USA. He received his Bachelor’s degree in Polymeric Based Composite Materials from Harbin Civil Engineering Institute in 1982 and his Ph.D. in Materials Science and Engineering from Rutgers-The State University of New Jersey in 1995. Before he joined NASA Langley Research Center, he was a Senior Research Scientist at ICASE, Hampton, Virginia. His research areas include the development of high performance electroactive polymers (EAPs) and polymer composites, electroactive materials-based devices (sensors and actuators), and their applications in smart structures for aeronautics and aerospace technologies and in artificial muscles and biomimetic technologies. Dr. Su also develops nano-structured multifunctional composite materials for applications in advanced aerospace technologies and clean energy technologies. He has more than 80 technical publications, 14 issued US and international patents, and four US and international patents pending. He has given more than 70 technical presentations including more than 25 invited and keynote presentations on EAP related materials and applications. He has also chaired and co-chaired more than 20 EAPs/smart materials and smart structures/systems conferences and conference sessions, contributed five book chapters, and co-edited two books on the topic of materials and devices for smart systems. Dr. Su taught a short course on electroactive polymers and applications at international conferences such as SPIE Smart Structures and Materials and Smart Materials and Nanotechnology.

*Please allow a 90 day notice of interest if inviting from a chapter based outside of the USA and a 60 day notice of interest if inviting from a USA-based chapter.*

Lecture Title(s)

Electroactive polymers, devices, and their applications

Electroactive polymers (EAP) have become one of most promising active materials for smart systems and artificial muscles. In the past two decades, various electroactive polymers have been developed. The materials include semicrystalline polymers, elastomeric polymers, polymeric composites, and their composites. The mechanisms of the electroactivity of thee materials involve ferroelectricity, piezoelectricity, electrostriction, and dielectricity. These materials have demonstrated advantages over other active materials in terms of the induced strain/deformation, electrical and mechanical toughness, light weight, and good processing property, as well as low cost. Due to these advantages, numerous devices and systems using EAP have been developed for various applications in high technology fields. This lecture will provide an overview of the recent development of EAP and their applications.

Nano-structured porous carbon and multifunctional composites and their applications in clean energy and advanced aerospace technologies

Porous carbon and graphite materials are widely needed in various advanced technologies including fuel cell, battery, filtration, air/water revitalization, sensors, detectors, and catalyst applications. Three dimensionally ordered interconnected porous carbon with carbon nanotube reinforcement provide a class of novel porous carbon materials for those applications. In addition, the materials also provide the possibility to develop supra-nano/micro-scale high performance and multifunctional composite materials. This lecture will provide introductory knowledge on the materials and their applications.
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