Members

Major

Materials science, Nanoscience, Interdisciplinary field of chemistry and physics

Research Keywords

Coordination chemistry, Electrochemistry, Polymer science, Inorganic chemistry, Nanoscience

SDGs Initiatives

Research Summary

Coordination nanosheets are ultrathin films of two-dimensional conjugated polymers composed of metal ions and planar organic π ligands. We first reported coordination nanosheets exhibiting metallic properties in 2013. Coordination nanosheets can be synthesized under mild conditions by bottom-up complexation reactions between metal ions and organic molecules. Since it is possible to create a wide variety of chemical and geometric structures leading to various physical properties, chemical properties, and mechanical properties, the ripple effect of coordination nanosheets on science and industry is immeasurable. We will establish high-quality synthesis of novel functional coordination nanosheets, clarify their physical and chemical properties, and create composite systems such as heterolaminates and conjugates to exhibit their unique physical and chemical functions and explore applications to electronic, magnetic, and optical devices, as well as energy conversion and storage devices.

Major

Physics of superconducting quantum circuits using nano-Josephson junctions and their applications, superconducting quantum information processing, quantum computers, superconducting artificial atomic quantum optics, materials science.

Research Keywords

Low temperature solid state physics

SDGs Initiatives

Research Summary

We studies quantum circuits based on superconducting qubits that utilize Josephson junctions. Regarding the integration of qubits, we are conducting research on quantum chips that can be mounted on a plane using a pseudo-two-dimensional qubit coupling network that we have developed. We are also conducting research on quantum information processing using superconducting Kerr parametric oscillators (KPOs) as bosonic qubits. We generated a cat state with KPO, evaluated the fidelity using a quantum tomography, and succeeded in manipulating a 1-bit gate. In the future, we will proceed with experiments on 2-bit gates and autonomous error correction in KPO. We are also conducting research on the initialization of superconducting qubits. In a quantum optical circuit using a new superconducting artificial atom with a resonator and superstrong coupling, we succeeded in simultaneously exciting two atoms with a single photon.

Major

fire safety design of buildings, evacuation plan

Research Keywords

evacuation safety, fire safety design, fire safety engineering, fire risk

SDGs Initiatives

Research Summary

The main research theme is technology and design methods to ensure fire safety in buildings, especially evacuation safety. Although the Building Standards Law was revised in 2000 and performance requirements were partially introduced into the fire safety provisions, various issues still remain. In order to clarify the necessary fire safety and ensure it through design, it is essential to determine how to set the design fire source, predict fire characteristics, and predict evacuation characteristics. Specifically, we will address various issues such as ensuring two or more escape directions, barrier-free evacuation safety design, arrangement of emergency escape facilities, performance for supporting firefighting activities, evaluation of emergency and rescue openings, and the security system on evacuation routes. We are currently conducting research on proposing performance evaluation methods and specific standards.

Major

Building and spreading of digital twin in manufacturing – Bring innovation by connecting the physical and cyber worlds

Research Keywords

Aerospace engineering, Computational engineering

SDGs Initiatives

Research Summary

Recently, the term "digital twin" has become commonplace everywhere. The aim of the digital twin is to create new value and convenience by connecting the real world (physical) and virtual space (cyber/digital) in real time. In particular, we focus on "manufacturing" and aim to expand the applications by incorporating digital twins into design, production, and operations through research and development on the efficient production of digital twin framework and the data linking in engineering chains. We also aim to contribute to human resource development by the digital twin.

Major

High-speed tracking based on high-speed image processing, dynamic interactiono

Research Keywords

High-speed image processing, inspection, phosphorescent, visual latency, motion blur

SDGs Initiatives

Research Summary

The research includes clarifying the relationship between task performance in human behavior and high-speed image processing, and accurately capturing fine cracks in tunnel walls from a high-speed vehicle. Those researches form a style of dialogue with new perceptual methods and technologies in the real world.

Major

High-speed image processing, CV/CG, AR/VR

Research Keywords

Computer vision, Computer graphics

SDGs Initiatives

Research Summary

I have been involved with CV/CG, and XR technologies realizing innovative applications based on high-speed vision. The performance of a system is limited by the lack of even a single component of input, processing, and output. Hence, I aim to build systems that far exceed conventional performance by comprehensively designing sensing, algorithms, and displays based on mathematics, physics, and the output destination system, the human. So far, I have realized high-speed measurement system for 3D shape, motion, texture, and material, and new visual media expressions such as dynamic projection mapping.

Major

IoT-oriented manufacturing technology by introducing the mass separation technique

Research Keywords

Ion beam, Instrumental analytical chemistry

SDGs Initiatives

Research Summary

I am developing IoT-oriented manufacturing technology by introducing the mass separation technique using ion beams. This study will help us to realise the ultimate fabrication process ruled on periodic law. The mass separators can principally control ionic weights determined by periodic law and the existence of isotopes. Our original mass separator can be installed in the stream of ion beams and selected elements from the metallic solution ion source. This technique can revolutionize the materials driven fabrication process to the periodic driven fabrication process. I believe the realization of our project goals will represent a kind of revolution for academic and industrial studies in this area.

Major

Thermal Conductivity Analysis of Single-walled Carbon Nanotubes Based on Photoluminescence Imaging Spectroscopy

Research Keywords

Carbon Nanotube, Electron Microscope, MEMS, Microspectroscopy

SDGs Initiatives

Research Summary

We aim to establish nanoscale thermal control technology by measuring the thermal properties of single-walled carbon nanotubes (SWCNTs) using photoluminescence or Raman spectroscopy. Furthermore, we will also work on research and development of optical isolators and related devices using SWCNTs. In parallel with my research activities, I would like to actively engage in activities aimed at disseminating science and technology and giving back to the world.

Major

Analysis of interfacial structures & rheology by linear/nonlinear laser spectroscopy

Research Keywords

Interface Science, Laser Spectroscopy, Physical Chemistry

SDGs Initiatives

Research Summary

There exist plenty of interfaces around us as exampled as surfaces on cloud particles and solid materials, oil/vinegar interfaces in dressing, and metal/electrolyte solutions interfaces for electrochemical reactions. Importantly, water is essential for all of the interfaces described here. One may think that water is absent on the solid materials, but their surfaces are generally covered by a few monolayers of water. Further, some of macroscopic surface properties, such as friction coefficients and wettability, tend to be varied owing to the adsorbed water. However, despite the fact that there are plenty of interfaces whose properties are affected by water, the structures and dynamics of the interfacial water are still poorly understood. This is because it is difficult to selectively probe such interfacial water without seeing bulk water. I overcome this difficulty by using interface-selective spectroscopy named “heterodyne-detected vibrational sum-frequency generation spectroscopy” for analyzing such interfacial water structures.

Major

Robotics, Human-Robot Interface, Human-Robot interaction

Research Keywords

Robot, High-speed vision, HRI

SDGs Initiatives

Research Summary

In order to realize intelligent robots for manufacturing, we are proposing dynamic compensation framework based on a coarse-to-fine strategy by utilizing high-speed vision (e.g. 1000 fps) technologies. Furthermore, we are working on human-robot systems that go beyond human limitations by utilizing high-speed machine assistance both in sensing and actuation. Besides, we also develop high-speed robotic manipulation strategies for rigid and flexible objects with the use of high-speed visual feedback.

Major

Coordination chemistry, Catalytic Chemistry

Research Keywords

Coordination chemistry, Catalytic Chemistry

SDGs Initiatives

Research Summary

Coordination nanosheets are two-dimensional materials composed of metal complexes consisting of metal ions and organic ligands. it is possible to create coordination nanosheets with various chemical structures and properties. In my research, I focus on fabricating coordination nanosheets on electrode surfaces and evaluating their electrocatalytic properties. One example is the hydrogen evolution reaction, which is an important technology for producing hydrogen as a clean alternative to fossil fuels. However, this reaction usually requires platinum as a catalyst, which is rare and expensive. Therefore, I aim to reduce the cost of hydrogen production by using coordination nanosheets as alternative catalysts, since they are easy to fabricate and inexpensive.

Major

Creation of Metal Nanoclusters with Novel Functions

Research Keywords

Nanomaterial, Precise synthesis

SDGs Initiatives

Research Summary

Can a metal be considered a metal even if it is reduced to the smallest possible size?
In a material called "metallic nanoclusters," in which several to several dozen metal atoms are gathered together, even a single atom can change its color, luminescence, magnetism, conductivity, and various other physical properties.
The properties of these materials are completely different from those of ordinary metals.
I synthesize metal nanoclusters with novel functions and study what factors are responsible for their physical properties.