Tohoku University. Research Profiles

LANGUAGE

"S" Keywords - 167 Result(s)

S

 S

[Supercomputer applications]

High Performance Computer Architectures and their Applications

NEXT
PREV
Features

My research interests include the design and development of high-performance supercomputing systems and their applications. Targeted areas range from the key components of supercomputing systems, which include processor architectures, memory subsystems, network systems, task schedulers, and compilers, to high-performance multimedia processing algorithms such as photo-realistic computer graphics.

Targeted Application(s)/Industry

Currently I am conducting joint-research projects with several companies in the fields of high-performance computer architecture design and advanced simulation technologies for industrial design such as next-generation supercomputers and highly efficient and comfortable regional jets.

Graduate School of Information Sciences
KOBAYASHI, Hiroaki, Professor Doctor of Engineering

[Supercomputers]

High Performance Computer Architectures and their Applications

NEXT
PREV
Features

My research interests include the design and development of high-performance supercomputing systems and their applications. Targeted areas range from the key components of supercomputing systems, which include processor architectures, memory subsystems, network systems, task schedulers, and compilers, to high-performance multimedia processing algorithms such as photo-realistic computer graphics.

Targeted Application(s)/Industry

Currently I am conducting joint-research projects with several companies in the fields of high-performance computer architecture design and advanced simulation technologies for industrial design such as next-generation supercomputers and highly efficient and comfortable regional jets.

Graduate School of Information Sciences
KOBAYASHI, Hiroaki, Professor Doctor of Engineering

[Supercritical]

Development of a reaction process in supercritical water

NEXT
PREV
Features

We are developing a new continuous flow type process for supercritical reactions. Under the supercritical state, the organic molecules and metal salt aqueous solutions are miscible and water molecule works as an acid/base catalyst which leads to rapid reactions. In order to apply such new reaction fields to an industrial process, it is necessary to establish the process design basis by understanding phenomena in the reaction fields, on the basis of phase equilibrium, flux and reaction kinetics theory. So while developing a process, we are doing research for the establishment of the process design basis.

Targeted Application(s)/Industry

Examples are a process for the synthesis of organic modified nanoparticles (MPs), a process for the pretreatment and solubilization of biomass in the supercritical/subcritical water and a process for the refinery of heavy oil in the supercritical water.

Advanced Institute for Materials Research
ADSCHIRI, Tadafumi, Professor Doctor of Engineering

Low temperature reforming of hydrocarbons using metal oxide nanoparticles synthesized by supercritical method

NEXT
PREV
Features

Our research group has succeeded in synthesizing various metal oxide nanoparticles with controlled size and exposure crystal planes by using organic modifiers under supercritical water conditions. The oxygen storage/release capacity of those materials in the low-temperature region is very high, and the reforming reaction of oxidative hydrocarbon proceeds at a significant rate. Besides, by combining the supercritical CO2 drying method, we have succeeded in forming a complex in which oxide nanoparticles are dispersed at a high concentration on the surface of the porous material, realizing both high oxygen storage/release capability and stability.

Targeted Application(s)/Industry

Low-temperature reforming reaction of biomass wastes, heavy oils, and methane. In the future, it is expected to be a technology that will lead to the construction of a low-carbon society, including CO2-free complete recycling of waste plastics.

Advanced Institute for Materials Research
ADSCHIRI, Tadafumi, Professor Doctor of Engineering

[Supercritical reaction]

Supercritical Hydrothermal Synthesis of Organic-Inorganic Hybrid Nanoparticles

NEXT
PREV
Features

We invented supercritical hydrothermal synthesis method for the synthesis of organic modified nanoparticles (NPs). Under the supercritical state, the organic molecules and metal salt aqueous solutions are miscible and water molecule works as an acid/base catalyst for the reactions. Organic-inorganic conjugate NPs can be synthesized under this condition. This hybrid NPs show high affinity with the organic solvent or the polymer matrix, which leads to fabricate the organic inorganic hybrid nanomaterials with the trade-off function (super hybird nanomaterials). These hybrid materials of polymer and ceramics fabricated with NPs achieve both high thermal conductivity and easy thin film flexible fabrication, namely trade-off function.

Targeted Application(s)/Industry

For example, by the surface modification of BN particles by supercritical method, affinity of BN and polymers could be improved, so that high BN content of hybrid materials, thus high thermal conductivity materials, could be synthesized. Also by dispersing high refractive index NPs like TiO2 or ZrO2 into polymers transparently, we can tune the refractive index of the polymers. CeO2 nanoparticles are expected to be used for high performance catalysts. To transfer those supercritical fluid nano technologies, a consortium was launched with more than 70 companies.

Advanced Institute for Materials Research
ADSCHIRI, Tadafumi, Professor Doctor of Engineering

[Supply Chain Risk]

Visualization of supply chain risks from the resource logistics perspective

NEXT
PREV
Features

With the increased global concerns of resource and environmental constraints of recent years, the role of mining, as a constituent of social responsibility associated with resource extraction and usage, is becoming increasingly important in the science, technology, and innovation policy. Under increasing public and shareholders' concerns of social and environmental sustainability, the fabrication industries require careful attention owing to their own risks related to the resources and materials that are used in their products and services. The Material Flow Analysis tool and Input output technique provide useful perspectives and valuable evidences for avoiding or minimizing the social and environmental risks related to the demand of resources.

Targeted Application(s)/Industry

Our developed model evaluates the risk weighted flow analysis by combining the resource logistics database and Global Link Input Output model. The estimated results shed light on how resource logistics prepares policy makers and R&D engineers to confront the risks behind resource usage and how the information should be shared among the stakeholders.

Graduate School of Environmental Studies
MATSUBAE, Kazuyo, Professor Doctor of Economics

[Support system software]

MEDICINE DETERMINATION SUPPORT SYSTEM AND MEDICINE DETERMINATION SUPPORT PROGRAM

NEXT
PREV
Features

AIMS: This invention is to support the doctor’s prescription for diabetes and metabolic syndrome, especially in Japanese Clinic (Patent: JP 4176438).
PROBLEM TO BE SOLVED: To perform a further efficient preparation by providing information for original medicine and generic medicine in the preparation.
SOLUTION: The medicine price, pharmacologic effect and the like of each of original medicine and generic medicine are preliminarily recorded in a medicine database, and a generic medicine corresponding to the original medicine inputted by a doctor is automatically retrieved and displayed on a display. When the total number of the inputted medicine exceeds a number determined by insurance medical care, the generic medicine is retrieved so that the drug price of the group of the same usage is a prescribed amount or less. Welcome to your investment or co-operation.

Department of Diabetes Technology, Graduate School of Biomedical Engineering
NONOGAKI, Katsunori, Professor MD, PhD

[Surface]

Molecular Dynamics Analysis of Coating and Surface Modification

Features

Molecular-scale mechanism of solid-liquid affinity, wettability, thermal boundary resistance and molecular deposition are analyzed by molecular dynamics simulations toward its control. With a background of heat and mass transport and interfacial thermodynamics, transport phenomena of various scales ranging from spin coating of photoresist to SAM (self-assembled monolayer) and hydrophobic/hydrophilic treatment by attaching some molecular basis are studied. Futhermore, the molecular-scale mechanisms which determine thermophysical properties and the molecular structure that realizes desired thermophysical properties are studied. We can conduct effective collaboration and provide academic consultations to companies interested in our research.

Institute of Fluid Science
OHARA, Taku, Professor Doctor of Engineering

[Surface Forces]

Development of Nano-Interface Chemistry for Materials Sciences Using Surface Forces Measurement

NEXT
PREV
Features

Our research aims at developing methods, including instrumentation, for characterizing surface (or interface) at the nano-meter level. Most of our research subjects are related to the surface forces measurement, which can directly monitor the interaction between two surfaces. We study phenomena occurring at the solid-liquid interface such as adsorption and structuring of liquids. We have developed the resonance shear measurement which is a sensitive method for evaluating properties of confined liquid for nano-rheology and tribology. Twin-path surface forces apparatus we developed enabled us to study wide variety of samples such as metals, ceramics and plastics.

Targeted Application(s)/Industry

These methods are applicable for characterizing lubricants, nano-materials, paints, sealants, and cosmetics. We hope to conduct collaborative research with a willing company for a practical application of this technology in industry.

Institute of Multidisciplinary Research for Advanced Materials
KURIHARA, Kazue, Professor Doctor of Engineering

 s

[superconductivity]

Emergence in collective electrons in organic molecular materials

NEXT
PREV
Features

The main research subjects in this group are the experimental investigations of the organic molecular conductors. The characteristic properties of the organic materials are multiple flexibilities owing to the assemble structure of nanometer-size molecules. This flexbility comes up recently for developing the organic electronic devices. We explore the fundamental electronic properties of the organic molecular materials which have wide range of the ground states from superconductivity to insulating states resulting from the strongly correlated electrons in the molecular pi-orbital. Such features are closely connected to flexible and multiple degrees of freedom in charge, spin, molecular latticeand molecules themselves. We are actively studying on the interesting and important issues in the condensed matter physics from the viewpoints of the characteristic flexbility of the organic molecular materials. We are prepared to provide academic consultations to companies interested in our research.

Low Temperature Condensed State Physics, Institute for Materials Research
SASAKI, Takahiko, Professor Dr. Eng.

Hierarchy Control in Structure and Creation of Novel Properties in Nano Scale Materials

NEXT
PREV
Features

Crystals produced from the building blocks using a concept of geometrical materials, from the ubiquitous elements such as B, C, N, O, Si, Ge and 3-d elements show the following characteristics:
(1) Special properties resulting from the bonding nature and geometrical symmery.
(2) New properties expected from confinement and interface.
(3) A variety of phonons as phonon engineering.
(4) Interplay among phonons, itinerant electrons and magnons.
Materials are synthesized using the strategy of natural aboundant ubiquitous elements for safety. Novel properties can be expected for advanced electronic devices. The structure of new materials can accurately be determined by various experimental techniques.

Targeted Application(s)/Industry

New materials produced by employing a new concept beyond the conventional methods can promote a new materials science for future electronics. Our research covers nano materials consisting of organic to innorganic elements. Thermoelectric materials for energy conversion and high mobility materials via Dirac quantum statse will be avialable for future electronic materials.

WPI Advanced Institute for Materials Research
TANIGAKI, Katsumi, Professor Doctor of Engineering

Neutron scattering study on macroscopic quantum phenomena

NEXT
PREV
Features

In contrast to other scattering techniques, such as x-ray and electron diffractions, neutron scattering has the following advantages: 1) light atoms, such as H and Li, can be detected; 2) electron spins can be detected; 3) low energy excitations can be investigated. Using the neutron scattering technique, we search for macroscopic quantum phenomena in many-body electron systems, such as macroscopic singlet ground states in the quantum frustrated magnets and spin-fluctuation-mediated unconventional superconductors.

Targeted Application(s)/Industry

As noted above, neutron scattering can be used for investigating magnetic structure, spin dynamics, light atom positions in crystalline materials and their dynamics. Hence, this technique is very useful when those pieces of information are to be known.

Institute of Multidisciplinary Research for Advanced Materials
SATO, Taku J, Professor Doctor of Science

Oxide Electronics

Features

Our research group investigates creation of functional oxides and their functionalities. We synthesize thin films by pulsed laser deposition and sputtering methods and bulk specimens, and develop their novel synthetic routes. Recently, we are studying electrically conducting rare earth oxides, transparent room temperature ferromagnetic semiconductors, and layered superconductors with monatomic Bi layer. We will develop our materials design by extending materials range and performing oxide heteroepitaxy.

Targeted Application(s)/Industry

Collaborative research in fields of oxide electronics with novel electric conducting oxides and oxide spintronics with ferromagnetic semiconductors and novel ferromagnetic oxides.

Advanced Institute for Materials Research
FUKUMRA, Tomoteru, Professor Doctor of Engineering

[supercritical fluid]

Supercritical Fluid Technology Based on its Unique Properties

NEXT
PREV
Features

We have investigated various physical properties of supercritical fluids and their mixture. The properties studied are density, viscosity, phase equilibria, solubility, etc. under high temperatures and pressures. Using these suprecritical fluid features, we have proposed their application technologies; such as extraction of natural resources, cleaning, drying, catalyst preparation, polymer processing, polymer recycling, biomass conversion and controlled delivery. The methodologies used are experiments, simulation and theretical ones.

Targeted Application(s)/Industry

Cleaning Technology: precision machinery component, optical component, etc.
Extraction of Natural Resources: food, supplements, aroma.
Polymer Processing: functional resin, electronic component, etc.

Graduate School of Engineering
INOMATA, Hiroshi, Professor Doctor of Engineering

[superelastic material]

Novel Cu-Based Shape Memory Alloy with High Ductility

NEXT
PREV
Features

Recently, we have developed a novel Cu-Al-Mn based shape memory alloy with high SM properties and with a ductility twice higher than that in Nitinol . Furthermore, this novel SM alloy needs no die for the shape setting and is fabricated with relatively low cost. Very recently, we have successfully developed a device to cure ingrown toenail by using this SM alloy.

Targeted Application(s)/Industry

Very recently, we established a fabrication process for the Cu-Al-Mn sheet, wire and bar with 0.1 - 20mm in thickness or diameter. We hope to conduct collaborative research with a willing company for a practical application with this new SM alloy.

Department of Materials Science, Graduate School of Engineering
KAINUMA, Ryosuke, Professor Doctor of Engineering

[superresolution]

Development of Vector Beam and its Application to Nanoimaging

NEXT
PREV
Features

Vector beams are very attractive because of their unique features such as small spot formation and strong longitudinal electric field near focus. We are developing a variety of generation methods of vector beams including Laguerre-Gaussian and Bessel-Gaussian beams and their higher order transverse modes. For instance, a smaller spot by approximately 30 % than that by a linearly polarized beam has been demonstrated and applied for nanoimaging.

Targeted Application(s)/Industry

Confocal scanning microscpy will benefit from vector beams as enhancement of spatial resolution. Otherwise, precision nano-processing will be possible. We are prepared to provide academic consultations to companies interested in our research.

Institute of Multidisciplinary Research for Advanced Materials
SATO, Shunichi, Professor Doctor of Engineering

[superspace group]

Development of Potential Thermoelectric Materials

Features

We have been exploring novel thermoelectric materials. Functions of a solid substance primarily depend on the electronic structure, directly derived from its crystal structure. Through high-quality structure analyses using neutron and X-ray diffraction, combined with first-principles calculations, we have been fabricating materials with desired functions. To date, more than 40 novel materials have been discovered based on our guiding principles.

Targeted Application(s)/Industry

For developing future device technologies, challenges on thin-film thermionic multilayers and organic thermoelectric materials are currently underway.

Graduate School of Engineering
MIYAZAKI, Yuzuru, Professor Doctor of Engineering

[suppressing tumorigenesis]

DIFFERENTIATION INDUCING METHOD ENABLING TUMORIGENESIS OF IPS CELLS TO BE SUPPRESSED

Features

The present invention relates to a technique for differentiating iPS cells into target differentiated cells while suppressing tumorigenesis in the iPS cells. In use of a statin and a differentiation inducer, iPS cells are differentiated into target differentiated cells, whereby iPS cells can be differentiated into differentiated cells in which tumorigenesis is suppressed.

Targeted Application(s)/Industry

Graduate School of Dentistry Division of Molecular and Regenerative Prosthodontics
EGUSA, Hiroshi, Professor D.D.S., Ph.D.

[surface hardening]

Advanced Control of Microstructure and Property of Structural Metallic Materials

NEXT
PREV
Features

Microstructure represents various kinds of heterogeneities in the metallic materials, i.e., grains, component phase, lattice defects and chemical inhomogeneity such as impurity/alloying elements. It can be modified through control of phase transformation/precipitation and deformation/recrystallization by adjusting compositions of materials and/or through processing routes (heat treatment, deformation). Such expertise in micro/nanostructure control is very important in production of current materials from viewpoints of energy saving and recycling in structural materials such as steels and titanium alloys.
We attempt to apply more advanced control of micro/nanostructures, such as atomic structures of crystalline interfaces, chemistory in an atomic scale (e.g., segregation) and so on. Fundamentals of microstructure formation (thermodynamics, kinetics, crystallography) are examined both theoretically and experimentally to clarify key factors for microstructure control. Another important aspect in our research is the improvement of mechanical property by microstructure manipulation.

Targeted Application(s)/Industry

Possibilities to establish new functions (e.g., superplasticity, shape memory/superelasticity) as well as superior mechanical properties (e.g., ultrahigh strength with high toughness/ductility) is also explored.

Institute for Materials Research
FURUHARA, Tadashi, Professor PhD

[surface metrology]

Development of Sensors and Measuring Systems for Ultra-Precision Manufacturing and Nanomanufacturing

NEXT
PREV
Features

The research is being focused on measurement of surface forms of precision workpieces and stage motions of precision machines, which are important items for ultra-precision manufacturing and nanomanufacturing. Optical sensors are being developed for measurement of angle and displacement, which are fundamental quantities for manufacturing. Technologies for improvement of the sensor sensitivity and bandwidth, reduction of the sensor size as well as new multi-axis sensing methods are being The research is being focused on measurement of surface forms of precision workpieces and stage motions of precision machines. Optical sensors are being developed for measurement of angle and displacement. A number of scanning-type measuring systems for precision measurement of surface forms and stage motions are also being developed. Error separation algorithms and systems for straightness and roundness, which are the most fundamental geometries treated in ultra-precision manufacturing, are being investigated. Novel systems based on scanning probe microscopy are under development for micro- and nano-structures as well as freeform optics in responding to new and important challenges from ultra-precision manufacturing and nanomanufacturing.

Targeted Application(s)/Industry

The multi-axis optical displacement and angle sensors developed in the laboratory are expected to measure motions of semiconductor/IC manufacturing and inspection equipment, precision machine tools, ultra-precision measuring instrument. The surface profile measurement systems are expected t play an important role in ultra-precision manufacturing and nanomanufacturing industries.

Department of Nanomechanics, Graduate School of Engineering
GAO, Wei, Professor PhD