Researcher's Profile

Recent interest in advanced thermal management technology is increasing due to the expectation for solving heat dissipation problems in various optical and electronic devices, the effective use of thermal energy in the systems and thermoelectric energy harvesting.
Phonons, which play an important role in heat conductions in solids, are difficult to control due to their strong diffusive nature. Therefore, a solid-state thermal control technology leaves more room for the development compared to photonics and electronics.
In recent years, the use of nanostructures enables artificial control of thermal conductivity and heat flow that are originally derived from materials. We have been exploring the field of phonon engineering and developing the new thermal control technology.
Through the industry-academia collaboration of JST Strategic Basic Program and JST MIRAI Program, we are conducting research aiming to contribute to a sustainable energy society and "Smart Society". Developing high-efficiency silicon thermoelectric devices and energy-autonomous sensing devices, using a thermoelectric energy harvesting are expected to be an important part of achieving these goals.
We are also working on the development of phonon systems as interfaces between the computational solid-state quantum layer and the communications layer provided by lasers in quantum networks that are expected to grow in demand and in new devices developed in the coming decades.

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• Directional heat flux generation and heat focusing in solid by nanostructuring
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• Development of silicon thermoelectric devices and a monitoring system by industry-academia collaboration