Time-domain Thermoreflectance
We use time-domain thermoreflectance (TDTR) to measure thermal conductivity and interface thermal conductance.
Ultralow and glass-like thermal conductivity in BaTiS3 single crystal
Nature Communications, Nov 2020
Ultralow and glass-like thermal conductivity in a hexagonal perovskite chalcogenide single crystal, BaTiS3, is observed. A two-level atomic tunneling system exists in a shallow double-well potential of the Ti atom and is of sufficiently high frequency to scatter heat-carrying phonons up to room temperature.... [Read More]
Dislocation induced thermal transport anisotropy in III-V semiconductors
Nature Materials, Jan 2019
Dislocations, one-dimensional lattice imperfections, are common to technologically important materials such as III–V semiconductors, and adversely affect heat dissipation in, for example, nitride-based high-power electronic devices.... [Read More]
Selected Publications
| Bo Sun, Shanyuan Niu, Raphael P Hermann, Michael E Manley, Jayakanth Ravichandran, Austin J Minnich et al. "High frequency atomic tunneling yields ultralow and glass-like thermal conductivity in chalcogenide single crystals." Nature Communications, 11, 6039, 2020. |
| Bo Sun, Georg Haunschild, Carlos Polanco, James Ju, Lucas Lindsay, Gregor Koblmüller, Yee Kan Koh, "Dislocation-induced thermal transport anisotropy in single-crystal group-III nitride films." Nature Materials, 18, 136, 2019. |
Recent News [More News]
# We have plenty vacancies for Postdocs, PhD and Master sudents. Please feel free to contact Bo directly.
Sep 2021: Rongjie He joined us, welcome!
Sep 2021: Songrui left for UC Riverside. All the best!
Aug 2021: We have finshed setting up our new lab at the Energy & Environment Building.
Jan 2021: Our work on atomic tunneling induced ultralow and glass-like heat conduction in BaTiS3 is covered in Science Daily, phys.org, and Chemistry World.
Sep 2020: The Sun group is welcoming three new members, PhD students Yizhe Liu and Qinshu Li, and Master student Shasha Huo.
July 2020: The Sun group is welcoming two new members, PhD student Doudou Gao and visiting student Susu Yang.
Oct 2019: Dr. Bin Wang joined the group, welcome!
Sep 2019: Yufeng Wang joined the group, welcome!
Sep 2019: The group attened WTT2019 in Wuhan.
Apr 2019: Bo officially joined TBSI and Tsinghua SIGS.
Jan 2019: Our TDTR setup is fully operational now.
Oct - Dec 2018: Houfu Song, Lu Zhao and Dr. Lijuan Zhang joined the group, welcome!
