The department is pleased to announce that Ralph Colby, Professor of Materials Sci...
Long-Qing Chen
Professor of Materials Science and Engineering
N-321 Millennium Science Complex
(814) 863-8101
chen@matse.psu.edu
http://www.ems.psu.edu/~chen/
Long-Qing Chen is Professor of Materials Science and Engineering at the Pennsylvania State University and Professor of Materials Science and Engineering at Tsinghua University under the short-term 1000-plan program. He has been a guest Professor of Physics at the Beijing University of Science and Technology since 2004. He received his B.S. degree in Materials Science and Engineering from Zhejiang University in China in 1982. After spending one year as an assistant instructor at Zhejiang University, he went to the United States in 1983 and received his M.S. degree in Materials Science and Engineering from the State University of New York at Stony Brook 1985 and a Ph.D. degree in Materials Science and Engineering from the Massachusetts Institute of Technology (MIT) in 1990. After a two-year post-doc appointment at Rutgers University with Professor Armen G. Khachaturyan, he joined the faculty at Penn State in 1992. He teaches undergraduate thermodynamics of materials and graduate kinetics of materials processes and also co-teaches a course in computational materials science. His main research interest is developing multiscale computational models for predicting microstructure evolution in materials using a combination of atomistic/first-principles calculations and phase-field methods. In particular, he is interested in microstructure evolution during phase transformations, grain growth, Ostwald ripening, ferroelectric and multiferroic domain switching, and coupled ionic/electronic transport in electrochemical systems. His research group collaborates actively with numerous experimental groups, applied mathematicians, and other fellow computational materials scientists and physicists as well as with more than a dozen companies and national labs. Professor Chen has published over 300 authored or co-authored papers (H-index = 49, Number of Citations ~8500) and 1 patent and co-edited 3 books in the area of computational materials science of microstructures and properties. He has given more than 200 invited talks including 6 at the Gordon Research Conferences. His current and former graduate students have received more than 40 awards including Materials Research Society Graduate Student Gold and Silver Medal Awards, American Ceramic Society Graduate Excellence in Materials Science Awards, Acta Materialia best student paper award, Penn State Materials Research Institute best Ph.D. thesis research award, TMS Young Leader Award, etc. Professor Chen received numerous awards for his work including ONR Young Investigator Award (1995), NSF special research creativity award (1999), Wilson Award for Excellence in Research from his college (2000), University Faculty Scholar Medal in Engineering at Penn State (2003), Outstanding Overseas Young Scholar by the Chinese Natural Science Foundation (2004) and Changjiang Chair Professorship by the Chinese Ministry of Education (2004) both at Beijing University of Science and Technology, Guggenheim Fellowship (2005), Royal Society Kan Tong Po Fellowship at Hong Kong Polytechnic University (2005), ASM Materials Research Silver Medal (2006), American Physical Society Fellowship (2008), Materials Science and Engineering Departmental Teaching Award of Students’ Choice (2010), and TMS EMPMD Distinguished Scientist/Engineer Award (2011).
Computational materials science, phase-field method, multiscale modeling of microstructure evolution integrating first-principles calculations and phase-field methods, microstructure database development, phase transformations, deformation twinning, microstructure coarsening, structural alloys (Ti-alloys, Ni-alloys, Al-alloys and Mg-alloys), domain structures in ferroelectric and magnetic materials, multiferroics, and electrochemical transport in dielectrics, batteries and solid oxide fuel cells.
Dr. Chen’s main research interest is in the fundamental understanding of the thermodynamics and kinetics of phase transformations and mesoscale microstructure evolution in bulk solid and thin films using computer simulations. Essentially all engineering materials contain certain types of microstructures, and our success of designing new materials is largely dependent on our ability to control them. Microstructure is a general term that refers to a spatial distribution of structural features that can be phases of different compositions and/or crystal structures, or grains of different orientations, or domains of different structural variants, or domains of different electrical or magnetic polarizations, as well as structural defects such as dislocations. It is the size, shape, and spatial arrangement of the local structural features that determine the physical properties of a material such as mechanical, electrical, magnetic and optical properties. For the last decade, Dr. Chen’s group at Penn State is particularly active in developing phase-field models for microstructure evolution during various materials processes including grain growth, coherent precipitation, ferroelectric domain formation, particle coarsening, domain structure evolution in thin films, phase transformation in the presence of structural defects, and effect of stress on microstructure evolution. Current research focus is on the effect of stress/strain on ferroelectric phase transitions and domain structure evolution in ferroelectric and multiferroic thin films, domain structures in ferromagnetic shape memory alloys, precipitate microstructure evolution in Al- and Ni-alloys, strain-dominated morphological evolution, effect of defects such as dislocations on microstructure evolution. Dr. Chen’s group collaborates extensively with experimentalists and with industry.
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