Multi-Scale Structure Control for Advanced Functional Materials

Seminar | December 5 | 4-5 p.m. | 6101 Etcheverry Hall

 Ozgur Keles, Ph.D., Assistant Professor, Chemical and Materials Engineering Department, San Jose State University

 Department of Mechanical Engineering (ME)

Abstract: Economic growth demands better products; hence, better materials. Specifically, product space in energy, defense, aerospace, and automotive industries requires materials that are multi-functional, lightweight, reliable, and tough. In addition, environmental regulations require sustainability. Comprehensive optimization of these requirements is possible through multi-scale structure control in multi-material systems. In this talk, I will discuss how we can control structure from nano-to-macro-scale using additive manufacturing and solution synthesis routes. Examples from hierarchical composites and ceramics will be provided with a design perspective. The use of kHz-range vibrations in local three-dimensional structure control will be introduced. Our recent work showed that vibration-assisted fused filament fabrication (VA-FFF) technique enhanced strength, toughness, and reliability of short-fiber-reinforced composites. We also reported improved mechanical, electrical, and optical properties in polymers via quantum dots and nano-scale structure control. The mechanistic origins of the toughness and reliability increases in additively manufactured biomimetic porous materials will be detailed. I will describe machine learning and high-throughput approaches towards the discovery of new electro-active material systems for the next-generation product innovation. In addition, the discussion will include evidence-based engineering education approaches and problems. For example, sustainable innovation of better products is strongly correlated to creativity at individual level, but how can we cultivate creative engineers? I will exemplify the use of virtual reality and artificial intelligence education approaches to enhance creativity and diversity.

Biography: Dr. Keles is an Assistant Professor of Chemical and Materials Engineering at San Jose State University. He received his B.S. and M.S. degrees from the Department of Metallurgical and Materials Engineering at Middle East Technical University, and his Ph.D. in Materials Engineering from Purdue University in 2013. Following, he joined Illinois Institute of Technology as a research associate, where he investigated the reliability of porous glasses and porous pharmaceutical compacts. His work on the deviations from Weibull statistics in porous ceramics was highlighted at the Gordon Research Conferences and awarded by the American Ceramic Society. His current research interests are multi-scale structure control, materials informatics, and engineering education. In 2019, Dr. Keles was selected as the advisor of the year at SJSU for his contributions to materials student clubs. He is also a photographer and digital artist who uses aesthetically appealing images and computer visualizations to improve student engagement, to aid student learning, and to foster creativity in engineering students. His work at the intersection of engineering, education, and arts was also highlighted in the The Member Journal of TMS.

 zohdi@berkeley.edu, 510-642-9172