Keigo Arai

Development of multimodal quantum sensor using electronic spins in diamond

Researcher

Keigo Arai

Outline

Multimodal sensing of physical quantities is a key technology for realizing cyber-physical-space in Society 5.0. In this research, I will use nitrogen-vacancy color centers in diamond as magnetic, temperature, pressure, and rotation sensors that function under various temperature and pressure.

Yuichiro Ando

Logic operation of electron spins in silicon

Researcher

Yuichiro Ando

Outline

Electron spins in silicon has a many advantages such as a long spin lifetime and compatibility with the mature electronic devices. The aim of this project is to establish novel logic devices operated by electron spins in silicon by using a precise control of number of spins and its direction. To realize the precise control of the spins, novel ways by using electric fields, magnetic fields, impurities and spin-orbit coupling will be investigated.

Takao Shimizu

Development of the ferroelectric tunnel junction devices by the wurtzite-type polar materials and elucidation of their physical nature

Researcher

Takao Shimizu

Outline

The wurtzite-based ferroelectric materials are new-class ferroelectric materials, which have a giant spontaneous polarization, a large coercive field, and an anisotropic crystal structure. The ferroelectric tunnel junction with a large resistive on/off ratio and good retention properties even in ultra-thin films will be developed by these wurtzite-based ferroelectric epitaxial films. The increase in the device reliability, control of the physical nature, and investigation of the availability of the device integration will be conducted through clarifying the polarization switching mechanisms and questing new wurtzite-type polar materials.

Rina Takagi

Development of novel materials hosting magnetic skyrmions and exploration of their function for next-generation magnetic memory

Researcher

Rina Takagi

Outline

Magnetic skyrmion is a vortex-like swirling spin objects with a particle-like character and attracting much attention as potential information carrier for next-generation magnetic information storage and processing devices with large capacity and low energy consumption. The aim of this research is developing novel bulk compounds with nanometer-scale magnetic skyrmions to establish a new route to generate high-density skyrmions. I will also investigate their electromagnetic responses to explore the electronic function for future device application.

Takahisa Tanaka

Time series analysis of multicomponent gas mixtures by large-scale integrated gas sensors

Researcher

Takahisa Tanaka

Outline

To realize health management based on exhaled breath, which is a multi-component gas mixture, I will develop a large-scale integrated gas sensors. Specifically, with i) using ion gel as the core material of the sensors and ii) multifunctionalization of the sensors by local Joule heating, proposed sensor realizes the large-scale integration on a compact platform that could not be realized by conventional sensors.

Jun Hirotani

The creation of innovative flexible thermal device based on electrons and holes as information carriers

Researcher

Jun Hirotani

Outline

In this research, electrons and holes in materials with high carrier concentration is defined as information carriers, and the thermal transport control based on the active carrier tuning by the electric field is explored. In addition to the creation of innovative flexible thermal control devices, I will challenge making highly-stable, ultra-thin, flexible heat flux sensor using a P/N-doped atomic layer materials.

Naoji Matsuhisa

Skin-conformable soft diodes by stretchable conductors and semiconductors

Researcher

Naoji Matsuhisa

Outline

Skin-like soft electronic devices are essential to realize the next-generation wearable devices for healthcare, virtual/augmented reality (VR/AR), and robotics. However, high-performance stretchable semiconductor devices has been difficult to be realized because of the lack of suitable stretchable electronic materials and the processes to maximize the performance. In this project, I will develop stretchable diodes and explore the underlying physics, in order to enable high-density sensor matrices, solar cells, photodetectors, and displays which are all useful in the next-generation wearables. The devices will be developed through materials and process engineering of polymeric materials or the hybrid with inorganic/carbon nanomaterials.

Takeo Miyake

Bioiontronics for interactive communication with biology

Researcher

Takeo Miyake

Outline

The bioiontronic device proposed in this project enable new functions that could not be realized in conventional devices, such as transport of multiple substances (like in open system), carrier control of electrons and ions (bidirectional signal transfer system), and self-powered system with biochemical energy (no external power source required). The proposed devices provide a new way to translate bidirectionally between the ionic language of biology and the electronic language of circuitry.

Takahiro Moriyama

Development of Spin superfluid devices using antiferromagnetic thin films

Researcher

Takahiro Moriyama

Outline

In general, superfluidity is a non-dissipative fluid phenomenon represented by liquid helium superfluidity and superconductivity. On the other hand, a magnetic material having a two-dimensional topology in the order parameter space is predicted to exhibit “spin superfluidity” which is an ultra-low dissipative current of spin angular momentum. This research aims to realize spin superfluidity by designing the topology of magnetic anisotropy in antiferromagnetic thin films, and to create spin transport devices with ultra-low energy consumption.

Michihiro Yamada

Development of semiconductor-based vertical spin device with highly efficient spin injection technology

Researcher

Michihiro Yamada

Outline

This project aims to achieve high performance operation of semiconductor-based vertical spin devices with atomic layer controlled ferromagnet/semiconductor interface. For significant improvement in performance of semiconductor-based spin devices, I will realize the atomically abrupt interface of ferromagnet/semiconductor and establish the atomic doping technique on a semiconductor interlayer in the vertical spin devices. These achievements will pave a way for social implementation of innovative devices making possible 3D integration and low power consumption.