Jiaqing He

Research Associate
Department of Materials Science and Engineering
Northwestern University
Room 1163, Cook Hall
2220 Campus Drive
Evanston IL, 60208-3108

Phone:	(847) 491-5809 (L)
Facsimile:	(847) 467-6573

Email: jiaqing-he@northwestern.edu

Educational Background

Postdoc Researcher, 2004-2008, Brookhaven National Laboratory, Upton, New York
Ph.D. in Physics, 1998-2004, Institute of solid physics, Juelich Research Center, Juelich, Germany; and Department of Physics, Wuhan University, Wuhan, China

Research Objective(s) and Approach

• Instrumentation interfacing, software/hardware control for electron holography capabilities.
• Implementation of HAADF, HREM, EELS and GIF imaging of interfaces, defects and thin films, associated with thermoelectrics and chalcogenide materials.
• Novel microscopy and analysis for nanostructures and nanopatterns of inorganics.

References and Publications

• Gueguen A, Poudeu P, Kong H, Moses S, Uher C, He JQ, Dravid VP, Paraskevopoulos K, and Kanatzidis MG. "Thermoelectric Properties of the Nanostructured Materials NaPb18-xSnxMTe20(M=Sb, Bi)." Chemistry of Materials (2009): In Press.
• Sootsman J, He JQ, Dravid VP, Li C, Uher C, Kanatzidis MG."High Thermoelectric Figure of Merit and Improved Mechanical Properties in Melt Quenched PbTe-Ge and PbTe-Ge1-xSix Eutectic and Hyper-eutectic Composites." Journal Of Applied Physics (2009):In Press.
• Chaudhuri S. R., Budhani, C., He, J.Q. and Zhu, Y.M. "Scaled Ac transport in mesoscopically phased-separated clossal mangnetoresistive manganites." Physical Review B (Brief Reports) 76 (2007):132402.
• Jia, C. L., Nagarajan, V., He, J. Q., Houben, L., Zhao, T., Ramesh, R., Urban, K. and Waser, R. "Unit-cell scale mapping of ferroelectricity and tetragonality in epitaxial ultrathin ferroelectric films." Nature Materials 6 (2007): 64.
• He, J.Q., Dittmann, R., Karthauser, S. and Vasco, E. "Geometric shadowing from surface templates induces self-organization of oxides." Physical Review B 74 (2006): 205410.
• He, J.Q., Vasco, E., Dittmann, R. and Wang, R.H. "Growth dynamics and strain relaxation mechanisms in BaTiO3 pulsed laser deposited on SrRuO3/SrTiO3." Physical Review B 73 (2006): 125413.
• He, J.Q., Vasco, E., Jia, C.L. and Wang, R.H. "Direct observation of a fully-strained dead layer at Ba0.7Sr0.3TiO3/SrRuO3 interface." Applied Physics Letters 87 (2005): 062901.