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Observing physical phenomena no one has ever seen, new discoveries, new technologies. We aim to be a laboratory where the joy of pursuing new frontiers creates value and leads to people, knowledge, and technologies that benefit society. We are pioneering “phonon engineering,” the next generation of semiconductor thermal control technology enabled by semiconductor nanostructures based on deep physical understanding and meticulous design. Phonons are carriers of heat, and by advanced control of their transport, we develop applications in thermal management of advanced semiconductor devices, construction of quantum communication networks, and environmental heat power generation. Additionally, using our laboratory’s proprietary three-dimensional thermal conductivity measurement and imaging techniques, we conduct research on heat dissipation for AlN, GaN, SiC power devices, and graphene—materials for which demand is increasing toward three-dimensional advanced semiconductors—as well as device thermal analysis to meet the needs of material development companies. We would be delighted if our physics exploration driven by intellectual curiosity and new technology development aimed at solving social issues contribute to the development of the AI industry and carbon neutrality. Our entire laboratory works together, enjoying our research while advancing it forward. We accept master’s and doctoral students and are continuously recruiting postdoctoral researchers.
News
| May03 | Dr. Tachikawa’s thermal transport by surface phonon polariton’s work was published in Phys. Rev. Lett. |
| Apr04 | Dr. Kim’s anistropic thermal conductance work was published in ACS Nano. |
| Mar01 | Mr. Pirro Matteo has joined the Nomura Lab as a Project Researcher and Mr. Barbier–Chebbah Félix of PSL University has joined our group as an internship student. |
| Feb01 | Mr. Bin Chengwen from Zhejiang University joined our group as Visiting Associate Research Fellow. |
| Jan27 | Updated version of our Monte Carlo simulator FreePATHS is now open source and available from the official python repository. |
| Jan16 | Dr. Diego has joined our group as Project Researcher. |
| Jan01 | Prof. Nomura has been appointed Deputy Director of the Institute |
| Dec16 | Dr. Yanagisawa won Best Paper Award in PowerMEMS 2022 (IEEE). |
| Nov1 | Mr. Wu Xin from South China University of Technology and Mr. Yang Lei from Tsinghua University has joined our group as Visiting Associate Research Fellow. |
Recent publications
- Suppressed thermal transport in mathematically inspired 2D heterosystems
In two-dimensional (2D) heterosystems, the contribution of coherent phonon transport makes superlattices with high interface density exhibit unexpected high thermal conductivity. Herein, inspired by mathematics, we demonstrate efficient suppression of phonon thermal transport […] - Assessing phonon coherence using spectroscopy
As a fundamental physical quantity of thermal phonons, temporal coherence participates in a broad range of thermal and phononic processes, while a clear methodology for the measurement of phonon coherence […] - Observation of phonon Poiseuille flow in isotopically purified graphite ribbons
In recent times, the unique collective transport physics of phonon hydrodynamics motivates theoreticians and experimentalists to explore it in micro- and nanoscale and at elevated temperatures. Graphitic materials have been […] - Resonant Thermal Transport Driven by Surface Phonon-Polaritons in a Cylindrical Cavity
The axial thermal conductance of a cylindrical cavity supporting the propagation of hybridized guided modes along its interface with SiO22 is quantified and analyzed as a function of its radius and […] - Parabolic mirrors collimating and focusing fluxes of thermal phonons
Manipulating heat fluxes at the nanoscale has become increasingly important in modern microelectronics. However, many methods of heat manipulations rely on complex nanofabrication. Here, we propose simple designs for collimation […]
