Tohoku University. Research Profiles

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"M" Researcher - 22 Result(s)

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Development of Soft Magnetic Materials and Magnet Consisting of Complete Rare-Earth Free Elements Both with Ultimately-High-Efficient Types Contributing to Energy- and Resource-Saving by Precise Controlling their Nanostructures

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Features and Originalities
Research activities include high functionalization and attachment of additional values to the soft magnetic materials of iron-group based metallic glasses, nanocrystalline and amorphous alloys and magnets, both from non-equilibrium alloys with useful properties that have not been achieved by conventional crystalline alloys. Recent successful results contain newly-developed nanocrystalline soft magnetic alloys with high saturation magnetic flux density of 1.8 Tesla or higher and low core loss of ~1/3 to that of the Silicon steels and fabrication of rare-earth free L10-FeNi magnets.

Possible Academic/Industrial Collaborations
The target materials possess high potential as industrial materials owing to Fe-based alloy with low material costs accompanied by rare-earth-free nature and to producibility in an air environment. Expectations are contributions to energy-saving, saving mineral resources and reducing carbon dioxide emissions through collaborations with companies dealing with materials and applications.

Targeted Application(s)/Industry

New Industry Creation Hatchery Center
MAKINO, Akihiro, Professor Doctor of Engineering

Discovery of diagnostic markers by metabolomics

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Losing cholesterol homeostasis with inborn errors of metabolisms or hepatobiliary diseases makes a change to in vivo cholesterol metabolism profile and causes the emergence of increased metabolites as conjugates in blood and urine. We have developed an LC/ESI-MS/MS method using fragment patterns characteristic of conjugation types for group-specific and comprehensive analysis of conjugated cholesterol metabolites. This method can contribute for an efficient discovery of diagnostic marker candidates toward various diseases.

Targeted Application(s)/Industry

After availability verification of candidates as diagnostic markers, it will be required screening tests. We have potential to collaborate with company for development of bioassay systems using antibodies or enzymes.

Tohoku University Hospital
MANO, Nariyasu, Professor Doctor of Pharmaceutical Sciences

Identification of Ignition and Combustion Characteristics by a Micro Flow Rector with a Temperature Gradient

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We have developed a methodology for identifying general ignition and combustion characteristics of gaseous and liquid fuels including bio and synthetic fuels. It enables identification of ignition and combustion characteristics of new fuels prior to application for practical combustion devices. The reactor system consists of a small diameter channel which has a temperature gradient from room temperature to the auto ignition temperature and thus reaction characteristics in different temperature levels can be easily investigated. Such a measurement had required research level skills and special devices such as rapid compression machine or shock tube which is costly in general, however, the micro flow reactor with temperature gradient enables reaction analysis easily.

Targeted Application(s)/Industry

It is expected to contribute to the designing of combustion devices, developments of new fuels, and chemical promoter and inhibitor.

Institute of Fluid Science
MARUTA, Kaoru, Professor Doctor of Engineering

Business Continuity Management (BCM)

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Business continuity management (BCM) is a strategy of a company or a public organization to continue critical operations or recover them early even when they suffer serious damage from disasters, major accidents, terrorism, infectious diseases and so on. The plans for BCM is called BCPs. Japanese government and industry organizations actively promote introduction and improvement of BCM. My laboratory have studied how to spread and improve BCM. I participate in development of governmental guidelines for BCM. I also operate a BCM study group consist of companies, governmental organizations and research institutes in Sendai City.

Targeted Application(s)/Industry

I would be able to give an advice to companies or organizations which are going to introduce or improve their BCM and BCP at the request of them. In addition, collaboration with corporate groups can be assumed to promote or improve BCM practically.

International Research Institute of Disaster Science
MARUYA, Hiroaki, Professor

Photo-Induced Characteristics of TiO2 Prepared by Anodic Oxidation

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Ti anodizing technique has been offered for coloring the surface of Ti, and its mechanism is understood by light interference varied with the oxide thickness. A characteristic of this study is to control the crystallinity of the oxide, and its originality is to provide photo-induced characteristics to Ti and its alloys by controlling the electrochemical conditions differed from that of coloration technology. This study is aimed for controlling the surface of Ti by using a simple and easy, inexpensive technique and to fabricate high functional titanium materials.

Targeted Application(s)/Industry

Related to practical applications, it is considered as a use for environmental purification such as deodorization and water purification, biomaterial and antibacterial and structural titanium.

Institute for Materials Research
MASAHASHI, Naoya, Professor Doctor of Engineering

Visualization of supply chain risks from the resource logistics perspective

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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

Development of an Industrial Instrument / the Medical Equipment Using the Contactless Power Transmission System

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Using a non-contact power transmission technique, we develop an industrial instrument and the medical equipment. In the industrial instrument, we deal with the wide non-contact electricity transmission of the dozens of kW class from mW class from a small size electric apparatus represented by a cell-phone to the factory carrier device. In addition, we develop the contactless electricity transmission to an artificial heart (TETS) and a functional electrical stimulator (FES) aiming at the exercise of limbs inconvenience person function rebuilding mainly in the medical equipment.

Targeted Application(s)/Industry

We develop soft-heating hyperthermia using the small implantation element which does not need an internal temperature measurement as cancer treatment.

Graduate School of Biomedical Engineering
MATSUKI, Hidetoshi, Professor Doctor of Engineering

Development in Semiconductor Materials and Research of their Properties Considering Device Applications Bringing System Evolutions

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1. Development of Distributed Feedback (DFB) Laser Diodes (LD) widely used in optical communications systems realizing a highly information-based society.
2. Nitride semiconductors famous for blue light emitting diodes
(a) Proposal of InGaAlN system considering device applications in 1989
(b) Success in growth of single crystalline InGaN by metalorganic vapor phase epitaxy (MOVPE) in 1989
(c) Prediction of band-gap energy (Eg) of InN much smaller than the reported values in 1989 and its experimental confirmation in 2002
(d) Observation of photoluminescense from InGaN in 1991
(e) Prediction of phase separation in InGaAlN in 1997
We promoted the JST-CREST project "Research on InN Semiconductor Laser Diodes with High Temperature-Stability for Optical Communications Systems".

Targeted Application(s)/Industry

DFB-LD: Fabrication of periodic structure with submicron scale, Epitaxial growth of semiconductor films on the substrate with fine structures, LD fabrication process, device evaluation, and device simulation
Nitride Semiconductors: MOVPE growth, N-polar growth, evaluation of materials, fabrication of light-emitting devices, solar cells, high-power transistors, and high-power transistors

New Industry Creation Hatchery Center
MATSUOKA, Takashi, Professor Doctor of Engineering

Development of Optical Sysytems for Noninvasive Treatment and Diagnosis

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Optical fiber-based endoscopic systems for non-invasive treatment and diagnosis are developed. The fiber transmits high-powered laser light for treatment and low-powered light for diagnosis. We develop treatment and diagnosis systems utilizing not only common glass-based optical fibers but hollow-optical fibers. Hollow optical fibers deliver high-powered infrared lasers and light with wide range of wavelength from ultraviolet and far infrared.

Targeted Application(s)/Industry

Our potential collaborators will be medical device manufactures, as well as any electronic device, communication device, and measurement instrument manufactures considering new entry to the field.

Graduate School of Biomedical Engineering
MATSUURA, Yuji, Professor

Brain Science-Based Preventive Care and Rehabilitation for Dementia in Communities

Features

1. To produce the brain science-based evidence for dementia prevention using neuropsychological tests and neuroimaging methods (amyloid PET etc.)
2. To establish the evidence-based integrated community care system including early detection, preventive care, and rehabilitation for dementia.
3. To apply for early screening of the " weakness due to disaster" by considering the measure for dementia is similar to that for the weakness.

Targeted Application(s)/Industry

An industry-academic cooperation is expected with insurance companies, industries for producing screening device, program for preventive care and rehabilitation.

Division of Geriatric Behavioral Neurology, Cyclotron and Radioisotope Center
MEGURO, Kenichi, Professor MD, PhD

Development of high performance and high functional materials by Compression Shearing MEthod (COSME)

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The compression shearing process is a new technology that enables consolidating of powder materials at temperatures ranging from room temperature to about 300 ° C. This method can consolidate powder to bulk material at temperatures below the melting point without binders or additives that make materials difficult to recycle. It is an innovative technology that has the potential to be applied to materials that were difficult to consolidate using conventional powder metallurgy methods and a new concept material process. We are actively working on this research on both basics and applications and would like to apply this technology to material bonding and material coating in the future.

Targeted Application(s)/Industry

Institute of Fluid Science
MIKI, Hiroyuki, Associate Professor Doctor of Science

Advanced Educational Environment with Interactive Instruction System IMPRESSION

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IMPRESSION is an interactive instruction system for both face-to-face lesson and distance education.
It was designed to facilitate teachers to plan and perform effective and attractive lessons with various multimedia materials, and help to evaluate performed lessons and improve them based on the double loop instructional design process, which is focusing on interaction between a teacher and students.

Targeted Application(s)/Industry

It could be used to perform advanced education with multimedia materials in schools, and also to design and implement training for employees at branch offices.

Center for Information Technology in Education
MITSUISHI, Takashi, Associate Professor PhD

Prediction and Prevention of Fractures

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We have been developing methods for explicating the dominant factors that determine the physical and chemical properties of materials and stacked structures used in human societies. Since the number of element atoms which consists of advanced materials has been increasing, and the crystallographic structure of the materials has become very complicated, both the various properties and reliability of the materials fluctuate significantly in nano-scale, and thus, deteriorate easily due to the local damages of the materials.

Targeted Application(s)/Industry

To design the optimal structure, composition of materials, and the fabrication process of both materials and stacked structures, we are going to develop a method of analyzing the atomic structure of thin film materials based on quantum mechanics and experimental methods for measuring material properties, atomic scale damage or defects in nano-materials.

Fracture and Reliability Research Institute, Graduate School of Engineering
MIURA Hideo, Professor PhD., Dr. of Engineering

Development of PHD-Targeted Drug for Ischemic Injury

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All the living organisms generate energy from molecular oxygen to maintain their own lives. Once the concentration of oxygen falls down, life activity gets severely hampered and it could sometimes cause death. Typical examples that are related to local hypoxia are ischemic heart disease, stroke and kidney disease.
We focus on the function of prolyl hydroxylase (PHD) as a sensor to detect the hypoxia, and we are developing drugs to treat ischemic injury by controlling hypoxia.

Targeted Application(s)/Industry

Currently, we have several compounds that inhibit the PHD. We want to commercialize in conjunction with pharmaceutical companies in Japan and overseas, advancing our non-clinical studies for clinical development.

Division of Molecular Medicine and Therapy, United Centers for Advanced Research and Translational Medicine (ART), Graduate School of Medicine
MIYATA, Toshio, Professor M.D., PhD

Development of Potential Thermoelectric Materials

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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

Spintronics Devices and Materials

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Spintronics is a technology utilizing electron spin which provided magnetic sensor, nonvolatile magnetic memory, and so on. Our studies are as below.

Noble & Rare-earth free magnetic films with large perpendicular magnetic anisotropy. We achieved to develop various Mn-bases alloy films exhibiting high perpendicular magnetic anisotropy (Fig.1 ).
THz range observation of magnetization motion. We achieved to detect a motion of magnetization using pulse laser in time domain (Fig. 2).
Novel organic spin devices. We achieved to fabricate hybrid junction consisting of an organic layer sandwiched by two inorganic magnetic layers and to observe magnetoresistance effect.
Tunnel Magnetoresistive devices: We are developing TMR devices with Mn-Ga alloys films (Fig.3 ).

Targeted Application(s)/Industry

Magnetic memory and storage. Microwave and Terahertz wave. Magnetic sensors.
We hope to conduct collaborative research with a willing company for a practical application of these devices and materials in industry.

WPI Advanced Institute for Materials Research
MIZUKAMI, Shigemi, Professor Doctor of Engineering

Imaging and photoregulation of biological functions

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To properly understand the functions of biomolecules, it is essential to observe them under physiological conditions where the interactions with other biomolecules are preserved. Therefore, we are developing new functional molecules using both organic chemistry and protein science approaches, and working on the visualization and optical control of biomolecules and their functions. Especially, we have developed fluorescent probes that quantitate the concentration of biomolecules or ions in subcellular regions such as organelles and caged compounds and photoswitches that optically manipulate the biomolecular functions.

Institute of Multidisciplinary Research for Advanced Materials
MIZUKAMI, Shin, Professor Ph.D.

Creation of a high functional bio-interface using laser fabrication

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 Using laser fabrication, we are developing techniques to enhance material surface properties and functionality. For example, to create a functional interface, we aim to clarify, by way of simulation and experimentation, the phenomenon that occurs when the surface of a material is irradiated using a laser beam.
 We expect that the results of our research will be widely applicable, including biomedical devices.

■ Creation of biocompatible surfaces
 Materials used for artificial organs, vessels, and other bio-implants require excellent tissue and cell biocompatibility. Therefore, we are exploring the creation of biocompatible surfaces using a new laser irradiation process in this study.
 We have succeeded in imparting a biologically active function to titanium-based materials by applying the laser irradiation technique. When such a material that has a biologically active function is inserted in a living body, hydroxyapatite (the principal constituent of bones and teeth) precipitates on the surface. Using the laser irradiation technique, we can manufacture bone-adherent implants, and we envisage their application to artificial joints or dental implants.
 This research aims to discover such breakthrough solutions for biomedical applications using the laser irradiation technique.

Department of Mechanical Systems and Design, Graduate School of Engineering
MIZUTANI, Masayoshi, Associate Professor Ph. D. (Engineering)

X-Ray Phase Imaging for High-Sensitive Non-Destructive Testing

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Conventional X-ray imaging methods that rely on X-ray attenuation cannot generate clear contrast in the observation of low-density materials such as polymers consisting of low-Z elements. However, the sensitivity to the materials can be improved drastically by X-ray phase imaging that detects X-ray refraction caused by the materials. X-ray Talbot or Talbot-Lau interferometry consisting of X-ray transmission gratings is now constructed in laboratories for X-ray phase imaging. X-ray phase tomography is also realized, enabling high-sensitive three-dimensional observation.
X-ray phase imaging can be utilized for X-ray non-destructive testing of industrial products and baggage that cannot be checked conventionally.

Targeted Application(s)/Industry

We aim at appending a phase-contrast mode to micro-CT apparatuses and developing screening apparatuses in production lines.

Institute of Multidisciplinary Research for Advanced Materials
MOMOSE, Atsushi, Professor Dr.

Functional Uniform Nanoparticles Production and Their Industrial Use

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Nanoparticles and/or fine particles to be used for functional materials, such as semiconductor, photocatalysts, dielectric and/or piezoelectric materials, cosmetics, catalysts, etc., has been synthesized in liquid-phase. Their size, shape, composition, and structure have been <strong>precisely controlled</strong> along an expected usage. <strong>Tailor-made synthesis method</strong> has been provided for nanoparticles and/or fine particles the companies wish to use.

Targeted Application(s)/Industry

Until now, we have been supplying nanoparticles and/or fine particles of ITO (Indium Tin Oxides) as TCO, Bi based or Nb based particles for lead-free piezoelectric ceramics, perovskite-based oxides for dielectric materials etc. The gel-sol method as the main synthesis method for uniform particles makes the production cost reduced.

Institute of Multidisciplinary Research for Advanced Materials
MURAMATSU, Atsushi, Professor Doctor of Engineering