Dr. Tiancheng Han

University of Electronic Science and Technology, China

 

Talk Title
Manipulating Heat Transfer with Thermal Metamaterials
Talk Abstract

Heat constitutes the largest portion of wasted energy in modern society. Therefore, the importance of effectively using thermal energy through heat transfer cannot be overstated. As the oldest energy form used by human being, heat has always been a hot research topic of fundamentals and applications. In recent years, developments on physics and material science have stimulated renaissance of research on this ubiquitous phenomenon by offering great opportunities as well as raising new demands on thermal energy utilization/management, smart maintenance of thermal environment, and thermal detection/anti-detection. In this talk, I will report the most recent developments on the manipulation of heat conduction and thermal radiation based on thermal metamaterials, and provide a unified perspective on the smart control of heat transfer. Indeed, all related studies can be considered as the exploration of approaches to engineer some physical quantities in heat transfer, such as thermal conductivity in heat conduction and thermal emissivity in radiation, etc. For manipulation of heat conduction, the transformation thermotics and scattering cancellation approach build solid relations between the temperature field in a system and its thermal conductivity distribution. The effective medium approximation can be used to realize an effective thermal conductivity tensor with common materials. The powerful theoretical tools have been utilized for the design and fabrication of devices with various functionalities, such as thermal cloak, thermal concentrator, thermal camouflage, thermal Janus, etc.. As another fundamental heat transfer mechanism, thermal radiation carries energy and information in the form of photons or electromagnetic waves. The recent advances in manipulating thermal radiation using sub-wavelength structures and novel materials have offered capabilities to control thermal radiation. Along with the advance in controlling fundamental properties of thermal radiation, I will highlight the state-of-the-art thermal radiation applications including radiative thermal camouflage and radiative cooling. Finally, I will give an outlook on the manipulation of heat transfer based on thermal metamaterials.. 

keywords
Thermal metamaterials, thermal manipulation, heat conduction, thermal radiation
Short Biography

Tiancheng Han received his B.Sc. and M.Sc. degrees in 2005 and 2008 from Lanzhou University in China, and received his Ph.D. degree in 2012 from University of Electronic Science and Technology of China. In 2012-2014, he did postdoctoral reseach at National University of Singapore. Since July 2012, he joined Southwest University as an assistant professor and was promoted to professor in 2015. From June 2019, he joined University of Electronic Science and Technology of China. He has published over 40 peer-reviewed journal papers so far, including 4 Advanced Materials, 1 Energy & Environmental Science, 1 Physical Review Letters, etc. His current research interests include transformation thermotics and thermal metamaterials

Target Audience
Students, Post doctoral, Industry, Doctors and professors
Speaker-intro video
TBA
 

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