- Contact Email: iceim_conf@vip.163.com
- Email: iceim_conf@vip.163.com
Prof. Ken-ichi Uchida Speech Title: Spin Caloritronics and Transverse Thermoelectrics Abstract: Spin caloritronics is a fusion research field that combines spintronics with thermoelectrics and thermal energy engineering [1]. In this field, many experimental and theoretical studies have focused on clarifying novel physics and functionalities arising from the interplay between heat, charge, and spin currents. Spin caloritronics has rapidly developed since the discovery of the spin Seebeck effect, where a spin current is generated from a heat current in magnetic materials. Subsequently, the anomalous Nernst effect, one of the thermoelectric effects unique to magnetic materials, has attracted significant attention owing to its intriguing mechanism related to topological structures of the electronic structure. One of the important functionalities realized by these phenomena is the transverse thermoelectric conversion, where the input heat current and the output charge current are orthogonal [2,3]. This symmetry allows for a simpler structure of thermoelectric conversion modules compared to conventional Seebeck devices, thereby significantly enhancing their versatility. Materials science studies to enhance the transverse thermoelectric conversion performance is being conducted worldwide to realize next-generation energy harvesting and heat sensing technologies that leverage the functionalities of spin caloritronics. Although the thermopower generated by the spin Seebeck and anomalous Nernst effects is currently much smaller than that by the Seebeck effect, the transverse thermoelectric conversion performance of spin-caloritronic phenomena has increased dramatically in recent years due to the introduction of new principles, new materials, and composite/hybrid materials [4]. Recently, research on “thermoelectric permanent magnets” that combine permanent magnet features with high-performance transverse thermoelectric conversion has been advancing [5], and transverse thermoelectric conversion modules with power generation densities larger than those of commercial Seebeck modules have been fabricated [6]. Biography: Ken-ichi Uchida received his doctoral degree from Tohoku University, Japan, in 2012. After working as an Assistant/Associate Professor (2012-2016) at Tohoku University and as a Group Leader at NIMS (2016-2023), he has been a Distinguished Group Leader at Research Center for Magnetic and Spintronic Materials, NIMS, since 2023 and a Professor at Graduate School of Frontier Science, The University of Tokyo, Japan, since 2024. He has been leading JST ERATO project since 2022 and working mainly on spin(calori)tronics, thermoelectrics, and thermal energy engineering.
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| Prof. Hisaki Watari |
| Tokyo Denki University, Japan |
Biography: Hisaki Watari is a Professor in the Division of Mechanical Engineering at the Faculty of Science and Technology, Tokyo Denki University, and Professor Emeritus at Gunma University. He received his B.Eng. in Naval Architecture from Kyushu University and his Ph.D. in Mechanical System Engineering from Gunma University. After serving at Oyama National College of Technology, he joined Gunma University as an Associate Professor and later became a Professor. In 2015, he was awarded the title of Professor Emeritus and subsequently moved to Tokyo Denki University, where he continues to engage in research and education. From 1999 to 2000, he was a visiting researcher at UMIST under a Japanese Government Scholarship. Since 2014, he has served as Chair of the Japan Association of Aluminum Forging Technology.
Prof. Watari’s research focuses on cold roll forming and lightweight metallic materials, particularly aluminum and magnesium alloys. His expertise spans advanced solidification, forming processes, and microstructural control. He is internationally recognized for his contributions to twin-roll casting (TRC), rapid solidification of Mg alloys, interfacial control in dissimilar-metal bonding, and the development of high-performance multi-material structures. His recent work integrates AI-assisted simulations of solidification, deformation, and interfacial phenomena, as well as studies on Mg/Al bonding and metal–polymer hybrid laminates. In addition, he has recently achieved notable results in manufacturing-oriented research fields such as high-precision drawing of high-aspect-ratio EV battery cases and high-speed forming of aluminum alloy wire for 3D printing applications.
Prof. Watari has authored numerous journal articles, conference papers, and invited lectures in materials processing and manufacturing engineering, and has collaborated extensively with universities, research institutes, and industrial partners in Japan, Europe, and Asia. He has served on scientific committees for several international conferences on metal casting and forming, contributing to the advancement of lightweight technologies and sustainable manufacturing for next-generation mobility and energy systems.
