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Long-Qing Chenphoto-Long-Qing Chen

 

Professor of Materials Science and Engineering

 

 

N-321 MSC Bldg.

Penn State University

University Park, PA 16802

Phone: (814) 863-8101

FAX: (814) 865-7173

E-mail: Long-Qing Chen

Education:

 

  • Ph.D. in Materials Science and Engineering, MIT, 1990
  • M.S. in Materials Science and Engineering, SUNY at StonyBrook, 1985
  • B.S. in Materials Science and Engineering, Zhejiang University, China, 1982

 

Research Interests:

 

  • Computational materials science - Phase-field simulations
  • Thermodynamics and kinetics of phase transformations and microstructure evolution
  • Ferroic domain structures
  • Multiscale modeling

 

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. Dr. Chen’s group at Penn State is actively 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-, Mg- and Ni-alloys, strain-dominated morphological evolution, and effect of defects such as dislocations on microstructure evolution. Dr. Chen’s group collaborates extensively with experimentalists and with industry.

 

Technologies Impacted by Research:

 

  • Structural materials for automotive applications
  • Electronic materials for electromechanical, energy storage, and memory devices

 

Professional Experience:

 

2002-present Professor of Materials Science and Engineering, The Pennsylvania State University
1998-2002 Associate Professor of Materials Science and Engineering, The Pennsylvania State University
1992-1998 Assistant Professor of Materials Science and Engineering, The Pennsylvania State University

 

Awards:

 

2006 ASM Materials Research Silver Medal
2005-2006 Royal Society / Kan Tong Po Fellowship
2005-2006 Guggenheim Fellowship
2005 Cheung Kong Chair Professorship at Beijing University of Science and Technology, awarded by Chinese Ministry of Education
2005 TMS EMPMD Exemplary Service Award
2004 Outstanding Overseas Young Scientist Award by Chinese Natural Science Foundation
2003 Penn State University Faculty Scholar Medal in Engineering
2001 Deike Research Award, Penn State College of Earth and Mineral Sciences
2000 Wilson Award for Outstanding Research, Penn State College of Earth and Mineral Sciences
1999 NSF Special Research Creativity Award
1995 ONR Young Investigator Award

 

Selected Publications:

 

  1. 1. L. Zhang, L. Q. Chen, and Q. Du, Morphology of critical nuclei in solid-state phase transformations. Physical Review Letters, 2007. 98(26).
  2. M. P. Cruz, Y. H. Chu, J. X. Zhang, P. L. Yang, F. Zavaliche, Q. He, P. Shafer, L. Q. Chen, and R. Ramesh, Strain control of domain-wall stability in epitaxial BiFeO3 (110) films. Physical Review Letters, 2007. 99(21).
  3. J. H. Haeni, P. Irvin, W. Chang, R. Uecker, P. Reiche, Y. L. Li, S. Choudhury, W. Tian, M. E. Hawley, B. Craigo, A. K. Tagantsev, X. Q. Pan, S. K. Streiffer, L. Q. Chen, S. W. Kirchoefer, J. Levy, and D. G. Schlom, Room-Temperature Ferroelectricity in Strained SrTiO3. Nature, 2004. 430(7001): p. 758-761.
  4. K. J. Choi, M. Biegalski, Y. L. Li, A. Sharan, J. Schubert, R. Uecker, P. Reiche, Y. B. Chen, X. Q. Pan, V. Gopalan, L. Q. Chen, D. G. Schlom, and C. B. Eom, Enhancement of Ferroelectricity in Strained BaTiO3 Thin Films. Science, 2004. 306(5698): p. 1005-1009.
  5. V. Vaithyanathan, C. Wolverton, and L. Q. Chen, Multiscale Modeling of Precipitate Microstructure Evolution. Physical Review Letters, 2002. 88(12).