Speaker Details
Topic: Boiling Heat Transfer Control by Micro-/Nano-Texturing of Metallic Heat-Spreading Devices
Tatsuhiko Aizawa
Director, Professor
Surface Engineering Design Laboratory
SIT, Japan
He received PhD from The University of Tokyo in 1980. He became a research associate, Institute of Aerospace and Aeronautics in 1980, a lecturer in 1985, an associate professor in 1986 and a professor in 1996 till 2004 at the University of Tokyo. After the research professor in the University of Toronto from 2005 to 2008, he has been working as a professor in SIT from 2009 till now.
His research interests include the micro-manufacturing, the innovations in manufacturing and materials processing, and, the materials science and engineering.
He has published over 500 papers in Japanese and International Journals and over 50 patents. He has received lots of awards from academic societies including the Distinguished Achievement Award, Japan Institute of Metals, 2011 and, the Gold Medal, 2017, the Achievement Award, 2019, Japan Society of Technology of Plasticity, respectively.
Abstract
High waste of heats generated from high-power transistors, LIDAR (Laser Imaging Detection and Ranging) and high power lasers must be efficiently transferred to cooling media with much higher heat flux than the normal criticality on the metallic surface. Among several approaches, the micro-/nano-textured aluminum and copper devices were fabricated to enhance the boiling heat transfer process to the subcooled water. The pure aluminum device with concave microtextures was first built by the plasma printing to describe the boiling heat transfer behavior with comparison to the bare aluminum plate. Next, the pure copper device with convex microtextures was developed by the wet plating to discuss the effect of microtextures on the heat transfer characteristics under the forced water cooling.
