Faculty Members / Research Areas

Quantum Nanophotonics and Topological Photonics

Aiming at the realization of novel photonic devices and quantum information devices, we are researching optical science in photonic nanostructures, developing unique technology for controlling light and photons based on the concept of topology and researching diamond nanophotonics.

Creation of novel next-generation spin devices using ultra-high quality semiconductor/oxide quantum nano-heterostructures

Our group is developping atomically controlled high-quality single-crystal quantum heterostructures consisting of various material systems, mainly oxides and semiconductors. We combine the quantum properties of electrons with spin degrees of freedom to control spin current flow with high efficiency. We aim to pioneer novel physics and realize highly efficient low-energy consumption devices that will lead to next-generation green innovation.

Materials / devices / systems to realize carbon neutrality.

Our interests spread from basic research on renewable energy to social implementation. The most exciting frontiers exist at the interfaces such as the ones between electricity and chemistry, research and society.

Research on skin electronics utilizing organic materials

We conduct research on the application of organic electronics to biological and medical devices. We actively collaborate with many domestic and international research groups (scientists, physicists, medical doctors, and companies).

新材料・機能集積で切り拓く超低消費電力CMOS半導体デバイス

半導体デバイス研究の最先端で、今世界中でホットに進められている研究にすぐに飛び込んで見たい方、これまで学んできた物性理論や半導体の知識が実際どのように役立つのか実感して見たい方など、意欲的な皆さんの参加を期待します

Nanometer world explored by nanoprobes - "Observe" what are invisible to our eyes -

Our laboratory aims to establish new methods for evaluating physical properties in the nanometer range by making full use of the nanoprobe technology that has high spatial resolution at nanometer scale and to contribute to the exploration of new devices through understanding of those physical properties.

Si photonics for next-generation AI/IoT deviecs

We are conducting research on silicon photonics for electronic-photonic integrarted circuits By combining silicon photonics with III-V compound semiconductors, germanium, 2D materials and so on, we investigate programmable photonic integrated circuits for deep learning, optical interconnect LSI, and mid-infrared integrated circuits. Our goal is to achieve innovative computing that does not rely on Moore's Law.

New electronic materials / devices, spintronics, quantum science and technology

We are conducting research on new materials, hetero structures, nano structures, and devices, aiming to create new electronics using electronic spin functions and quantum phenomena. We are working on a wide range of themes, from basic research based on intellectual curiosity to research with an engineering application.

Semiconductor integrated photonics

Our research focuses on integrated photonics, which invoves using a compact semiconductor chip of a few millimeters in size to manipulate the state of light. By leveraging the unique properties of "light", such as ultrabroad bandwidth, parallelism, and linearity, and offloading the intelligent digital computations to "electronic" circuits, we aim to create innovative photonic devices that can be applied to a wide range of fields, including next-generation optical communications, imaging, computing, and more.

MEMS/NEMS, Micro/Nano mechatronics

MEMS (microelectromechanical systems) technology is a composite field of electrical engineering, mechanics, chemistry, material science, fluidics, optics and else. Using semiconductor microfabrication technology, we develop various MEMS applications such as optic communication, image display, medical diagnosis, IoT sensors, and energy harvesters.

Photonic integrated circuits and renewable energy system based on semiconductors

In our laboratory, we fabricate photonics integrated circuits and solar cells by ourselves from scratch. Facing the fabricated devices and carefully examining their characteristics, you will realize that they are quite different from virtual devices modeled on a computer. Dialogue with real devices is one of the most important research process for us.

Integrated quantum electronics and Thermoelectric energy harvesting

We are promoting physics exploration in semiconductors and two -dimensional materials and developing next -generation thermal flow control technology. We are studying new basic physics unique to a hybrid state of multiple quantums, which cannot be achieved with a single quantum, and is studying devices that enable quantum broadcasts. Applied research provides environmental thermal power generation and energy -saving devices, basic understanding of the physics of phonon and thermal control, which supports its technology development, and exploration of new physics.

テラヘルツナノサイエンスと極限デバイス物理

平川研究室では、単一分子や量子ドット、NEMSなどナノ構造の物理を明らかにし、それに基づく新しい動作原理のデバイスや超高感度検出技術などを考える研究を行っています。物理にロマンを感じる人、もの作りが好きな人、歓迎します。

Semiconductor silicon nano device aimed at large -scale integration

Hiramoto/Kobayashi Laboratory is pursuing ultimate integrated nanoelectronics by device innovation to solve the world's issues.

Startled Computers: Space makes semiconductors surprised

In Sci-Fi movies, androids are often depicted as having cold and emotionless character. We may have such impression because most of computers rely on digital processing in which everything is flatly divided into "1" or "0", but—would you believe it?—they are easily surprised and often get upset. It is caused by a strike of tiny invisible particles, fragments of exploding stars a.k.a cosmic rays, but the shock is significant. The shock makes a computer chip surprised and lose its memory, control, and even its fundamental ability to boot up. So, what will you do next?

Elucidation of new electronic materials and spintronic substances due to X -ray spectroscopy

Understanding the mechanism of physical properties can provide clues to the creation of substances that are desired to improve the quality and application of materials. Kobayashi (Ki) Laboratory is conducting basic research using electronic status analysis using radiation empty lighting light for the purpose of elucidating the physical properties of functional electronic materials and device structures.

Semiconductor transistor and memory device technologies for next generation computing

Hiramoto/Kobayashi Laboratory is pursuing ultimate integrated nanoelectronics by device innovation to solve the world's issues.

Electronics to learn "bio" to "learn and bio"

We aim to create new electronics inspired by bio-systems, with the keyword of "Yuragi (fluctuation)" which is unique to life-systems. We fabricate artificial lattices composed of magnetic and ferroelectric phases, and conduct basic researches on the relation between their physical properties caused by "fluctuations" and the flexiblity/plasticity of bio-systems.

Advanced electronic devices using semiconductors and functional materials

Our research focuses on the development of functional electronic devices based on semiconductor and ferroelectric materials. We explore various research areas such as material engineering, device physics, and new-concept computing by leveraging the unique properties of these materials and devices.

Soft and stretchable electronic mateterials and the devices to harmonize human-machine interactions

We are working on the development of electronic materials and devices that are soft and stretchable like a living body. Taking advantage of the softness, we aim to realize a healthcare sensor that integrates the skin and body and the next-generation human computer interface.

Organic electronics for flexible sensor application

Our group develop the soft electronics by organic materials. Our focus is Device Physics, Development of new process, Application.

Realization of semiconductor materials and devices that integrate "magnetism", "superconductivity" and "topology".

Our focus is to integrate "magnetism", "superconductivity" and "topology" to all-in-one semiconductor platforms, using nanoscale semiconductor/ferromagnet/superconductor hybrid structures. These integrated material platforms would pave new ways to fundamental technologies for ultra-low power-consumption electronics and fault-tolerant quantum information.

第一原理計算は固体中に膨大に存在している電子の状態を計算することで、物質全体の物性を予測できる手法です。研究の現場では物性発現メカニズムの解明や新物質の探索に役立っています。本研究室では第一原理計算を活用した高機能なスピントロニクス材料の探索や、探索の精度・効率をより良くするために計算手法の開発を行っています。

Soft/flexible devices for medical applications

We engage in research on flexible devices for application to living body, taking advantage of qualities unique to organic materials. We have proposed pressure sensors that do not interfere with skin sensation, breathable electrodes that do not cause skin irritations, and nanomesh sensors with cellular level softness for next-generation biointerfaces with high biological conformity.

Material Science and Device Physics in Wide-Bandgap Semiconductors

Wide-bandgap semiconductors, exemplified as Gallium Nitride (GaN) and Silicon Carbide (SiC), have garnered significant attention as materials for high-voltage and high-current power devices as well as high-frequency and high-power devices due to their superior material properties such as high breakdown electric field strength and high carrier drift velocity.

Ultrathin film electronics for healthcare and medical applications

We aim to develop electronically functionalized 'ultra-thin film electronics' by implementing and printing electrodes, wiring, antennas, etc., on polymeric ultra-thin films with a thickness ranging from several hundred nanometers to a few micrometers. This technology is intended for applications in the healthcare, medical, and sports fields, with the goal of creating devices that can be adhered to soft biological tissues such as the skin and organs, functioning like a sticker.