物質が示す
量子効果の探求

Approach

Theoretical elucidation of quantum-mechanical phenomena
to build the foundation for next-generation
energy conversion technologies

We conduct theoretical and computational studies on the electronic and optical properties of nanomaterials.

Our recent work focuses on the physics and materials science of energy harvesting, aiming to discover energy-conversion processes that surpass conventional efficiency limits and to identify materials that can realize them.

Our ultimate goal is to contribute, from the standpoint of physics and materials science, to the realization of a sustainable and clean society — one of humanity’s most pressing challenges.

View Publications

• 1. Physics of Advanced Energy Conversion

  新規エネルギー変換の物理

  We theoretically clarify and explore mechanisms for energy conversion — from light to electricity (photovoltaic effect), from heat to electricity (thermoelectric effect), and from heat to light and then to electricity (thermophotovoltaic effect) — based on new physical processes that arise from the interplay of electrons, light, and heat in materials.

  These studies provide guiding principles for designing next-generation high-efficiency solar cells and thermoelectric conversion devices.

  

• 2. Properties of Nanocarbon and Atomically Thin Materials

  ナノカーボン・原子層物質の物性

  We theoretically investigate the electronic and optical properties of nanocarbon materials, typified by carbon nanotubes, and atomically thin materials with a thickness of only a single atomic layer.

  By harnessing their unique properties, we aim to realize ultrafast transistors and novel optical devices based on new physical principles.

  

• 3. Valley Physics and Valleytronics

  バレー物性とバレートロニクス

  Beyond charge and spin, electrons possess an additional degree of freedom called the “valley.” We aim to establish the fundamental theory of valleytronics — a new type of electronics that utilizes valley degrees of freedom as information carriers.

  This research could enable low-power, high-capacity information processing that surpasses the limits of present-day electronic devices.

  

• 4. Optical and Electromagnetic Responses of Topological Materials

  トポロジカル物質の光物性・電磁応答

  We theoretically investigate the optical and electromagnetic responses of topological materials — systems characterized by the topological properties of their wave functions.

  This research has potential applications in robust quantum computing and high-efficiency solar energy conversion.