University of Minnesota
University of Minnesota: Department of Mechanical Engineering


Xiaojia "XJ" Wang

Benjamin Mayhugh Assistant Professor
Graduate Faculty Member, Electrical and Computer Engineering

Office: 246 Mechanical Engineering
Phone: 612-625-1583




Postdoctoral Research Associate, 2012-2014, Materials Science and Engineering, University of Illinois at Urbana-Champaign
Ph.D. 2011, Mechanical Engineering, Georgia Institute of Technology
M.E. 2007, Mechanical Engineering, Xi'an Jiaotong University, Xi'an, China
B.S. 2004, Engineering, Xi'an Jiaotong Univeristy, Xi'an, China


Micro/Nanoscale Thermal Transport Laboratory


Dr. Wang's research interest focuses on developing new science and technology exploiting energy transport processes at small scales (in both time and space). Her group explores the fundamental understandings of thermal and magnetic transport in materials, and establishes their structure-property relationships. Such understandings can advance the design and synthesis of materials with tailored properties that hold promise for numerous applications, including photovoltaics, solar energy utilization, semiconductor thermal processing, spintronic and data storage devices, and thermoelectric devices for thermal and electrical energy conversion. Her Micro/Nano Thermal Transport Lab (MNTTL) currently has three major directions: (1) utilizing ultrafast laser spectroscopy (Time-Domain Thermoreflectance and other upgraded configurations) to investigate material thermal properties and interface thermal transport; (2) investigating the magnetization dynamics and heat-spin coupling using Time-Resolved Magneto-Optical Kerr Effect (TR-MOKE); (3) exploring material radiative properties and the optical response of micro/nano-engineered structures for better control of spectral, directional, and polarization selectivities.
The complexity of interacting heat carriers, compounded by the exotic features of nanostructures, strongly encourages a multidisciplinary approach to studying thermal and magnetic transport in micro/nanostructured materials. In the Wang lab, various characterization instruments have been exploited, including a custom-built ultrafast time domain thermoreflectance system based on the pump-probe technique, a full set of magnetic accessories for TR-MOKE measurements, an integrating sphere-double monochromator system, among others. Please refer to the MNTTL research webpage for more details.