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Kai He

Kai He

Assistant Professor

Phone: (864) 656-9717
Office: 285 Sirrine Hall
E-mail: kaihe@clemson.edu
Website: https://cecas.clemson.edu/helab/


Overview

Dr. He is currently an Assistant Professor of the Department of Materials Science and Engineering at Clemson University. He obtained his Ph.D. at Arizona State University, and M.S. and B.S at Harbin Institute of Technology, China. Prior to joining Clemson in 2018, he was appointed as Research Assistant Professor in the Materials Science and Engineering Department at Northwestern University after completion of postdoctoral training at University of Maryland and Brookhaven National Laboratory.

Dr. He’s research interests focus on advanced electron microscopy and spectroscopy, and their implementation in functional nanomaterials used for magnetics, electronics and energy storage technologies. He has extensive experience in developing novel characterization methods, especially the state-of-the-art in-situ TEM techniques for atomically-resolved real-time imaging. He has published more than 50 peer-reviewed papers in top-ranked journals with over 1600 citations to date. 

Education

Ph.D., Arizona State University (2010)
M.S., Harbin Institute of Technology, China (2006)
B.S., Harbin Institute of Technology, China (2004)

Research Areas

Aberration-corrected electron microscopy
In-situ TEM
Multimodal spectroscopic imaging
Electron holography
Energy storage
Nanomagnetism
Nanoelectronics

Selected Publications

K. He, et al. “Visualizing non-equilibrium lithiation of spinel oxide via in situ transmission electron microscopy”, Nature Communications, 7, 11441 (2016).

Y. Wen, K. He (equal contribution), et al. “Expanded Graphite as Superior Anode for Sodium-Ion Batteries”, Nature Communications, 5, 4033 (2014).

K. He*, et al. “Kinetically-Driven Phase Transformation during Lithiation in Copper Sulfide Nanoflakes”, Nano Letters, 17, 5726 (2017).

K. He, et al. “Sodiation Kinetics of Metal Oxide Conversion Electrodes: a Comparative Study with Lithiation”, Nano Letters, 15, 5755 (2015).

K. He, et al. “Transitions from near-surface to interior redox upon lithiation in conversion electrode materials”, Nano Letters, 15, 1437 (2015).

K. He, et al. “Sodiation via Heterogeneous Disproportionation in FeF2 Electrodes for Sodium-Ion Batteries”, ACS Nano, 8, 7251 (2014).

K. He, et al. “Diagnosing nanoelectronic components using coherent electrons”, Nano Letters, 13, 4815 (2013).

K. He*, et al. “Effects of vortex chirality and shape anisotropy on magnetization reversal of Co nanorings (Invited)”, Journal of Applied Physics, 107, 09D307 (2010).

K. He*, et al. “Direct visualization of three-step magnetization reversal of nanopatterned spin-valve elements using off-axis electron holography”, Applied Physics Letters (Front Cover), 94, 172503 (2009).