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Researchers 287 Result(s), Themes 265 Result(s)

A

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A Study on the Proper Waste Management and Urban Mining Project in Asian Countries; International Resources Recycling and Cross-Border Pollution

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特徴・独自性
  • The objective of this research is to maximize international resource recycling efficiency through a feasibility assessment of urban mining project in East Asia. It is not only focused on valuable materials but also on less valuable materials like waste plastics. The merit of this approach is its consideration of social, economic and environmental systems in each country.
実用化イメージ

This research is envisioned to support the establishment of resource recycling systems, developing new business models, people-to-people exchange and information sharing.

Researchers

Graduate School of International Cultural Studies

Jeongsoo Yu

Development of Sustainable Integrated Multiphase Energy System

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特徴・独自性
  • Our laboratory is focusing in the development of innovative multiphase fluid dynamic methods based on the multiscale integration of massively parallel supercomputing and advanced measurements, and research related to creation of environmentally conscious energy systems. Furthermore, we promote basic research for the creation of risk management science and associated new multiphase flow system directly linked to sustainable energy represented by a high-density hydrogen storage technology.
実用化イメージ

P2P Hydrogen supply chain, Elastohydrodynamic lubrication, Supercomputing of Laser melting and sputter particle formation, High pressure diecast computing / Automotive industry, Additive manufacturing

Researchers

Institute of Fluid Science

Jun Ishimoto

Development of integrated safety management technology for hydrogen energy systems

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特徴・独自性
  • To investigate the diffusion and combustion phenomena of reactive hydrogen gas leakage when a high-pressure hydrogen tank fails due to crack propagation caused by an initial defect, we have developed a coupled analysis method that simultaneously analyzes the material structure and reactive turbulent multiphase flow through an interdisciplinary research approach. Furthermore, we have developed a new numerical prediction method related to the diffusion flow characteristics and combustion limits of hydrogen leaking due to crack propagation failure of high-pressure tank bulkheads.
実用化イメージ

We contribute to the design of hydrogen storage containers for various types of transportation equipment and the development of safety guidelines and risk management for hydrogen station configurations.

Researchers

Institute of Fluid Science

Jun Ishimoto

Advanced die casting process computing with solidification phenomena

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特徴・独自性
  • Die casting is a method of mass-producing high-precision castings in a short time by filling the mold with molten metal at high pressure and high speed. Since solidification is completed quickly under high pressure, various defects peculiar to die casting occur. Significantly, the casting cavity has a high incidence in die casting, and it is a factor that hinders the quality. Therefore, a numerical approach to the die casting process is expected to prevent these problems, and the information obtained from the numerical analysis is expected to be reflected in the casting plan to reduce the number of prototypes, the lead time to product development, and the cost. In this study, a multiphase flow analysis with solidification phenomena of molten aluminum inside mold was conducted for a high-pressure die casting process of the throttle body.
実用化イメージ

Automotive industry, Automotive suppliers, Foundry industry

Researchers

Institute of Fluid Science

Jun Ishimoto

newDevelopment of a Numerical Prediction System for Sliding Part Wear and Seizure Occurrence Portions

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概要

Focusing on the lubricant film flow with phase change between the engine piston pin and connecting rod small end, we developed a new multiphase fluid-structure coupled analysis method that takes into account elastic deformation of the structure and flow path changes and developed a simulation prediction method for tribological properties under high load conditions. The simulation prediction method for tribological properties under high load conditions has been created. As a result, we succeeded in simulation prediction of the wear/seizure generating areas in sliding parts. We discovered that the peculiar deformation behavior of the components is the cause of wear/seizure.

従来技術との比較

It has been thought that computational prediction is impossible to verify the wear and seizure locations in fluid lubrication. Still, this study succeeded in the simulation prediction of wear and seizure locations in sliding parts.

特徴・独自性
  • Numerical prediction of the wear and seizure locations in the sliding parts of engine piston pins was successfully performed.
  • The bow-like deformation of the piston pin was identified as the cause of mechanical contact and seizure at the connecting rod edge.
  • A three-dimensional multiphase fluid-structure coupled analysis method has been successfully developed, considering the piston pin's elastic deformation and connecting rod and thin-film cavitation1 lubrication with unsteady flow path changes.
実用化イメージ

This research method applies to automotive engines and all sliding component elements using fluid lubrication. It contributes to damage prediction and the development of safety guidelines for transportation and industrial machinery components, enabling the optimal design of components.

Researchers

Institute of Fluid Science

Jun Ishimoto

Development of Interconnect Materials and Processes for High Performance and High Reliability Electric Devices

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特徴・独自性
  • Electronic products can be operated not only by semiconductors but also by metal interconnections attached to the semiconductors. Required properties for the metal interconnections are ohmic contact, diffusion barrier property, adhesion with semiconductors, and low resistivity, corrosion resistance, process reliability. Our group has committed ourselves to develop new metals and processes to meet the needs of wide-ranged device producers with consideration of cost performance. Topics of our research include (1) Cu alloys to self-form a diffusion barrier layer in multilayer interconnection of Si devices, (2) Cu alloys to form a reaction-doping layer in IGZO oxide semiconductors, (3) Nb alloys to achieve mechanical and thermal reliability with good ohmic property for SiC power devices, (4) Cu alloys for transparent conductive oxide such as ITO, (5) screen-printable Cu paste lines for solar cells, etc..
実用化イメージ

Our research efforts are targeted at metallization and interconnections for advanced LSI, flat panel displays, touch panels, power modules, solar cells, and other electronic devices. Collaborators include material producers, equipment vendors, and device producers in the entire value chain of electronic products.

Researchers

Graduate School of Engineering

Junichi Koike

 K

Powder Processing Contributing to the Global Environmental Protection

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特徴・独自性
  • Material properties and characteristics of the product as a raw material powder are dependent on the particle packing structure as well as the chemical composition. Sophisticated control of the powder processing such as mixing and grinding is strongly required. In our laboratory, we are creating the simulation method as a tool for controlling the powder processing and optimizing the powder process for achieving a resource-saving and energy-saving by the computer simulation.
実用化イメージ

We are conducting research on analysis/optimization of powder processing such as grinding, mixing, and packing by using simulation, metal recycle from urban mine through active utilization of mechanochemical effect, and generation of energy from biomass.

Researchers

Institute of Multidisciplinary Research for Advanced Materials

KANO Junya

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

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特徴・独自性
  • 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.
実用化イメージ

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

Researchers

Institute of Fluid Science

Kaoru Maruta

INSTRUMENT AND METHOD FOR ANALYZING METABOLIC CONDITION OF LIVING BODY AND RECORDING MEDIUM

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特徴・独自性
  • AIMS: The invention is to analyze metabolic condition, especially in oxygen consumption and energy production in the adipose tissues of human (Patent: JP 3848818).
  • PROBLEM TO BE SOLVED: To provide an instrument and method for analyzing the metabolism condition of a living body which is constructed in such a manner that it can measure the metabolism condition of a living body correctly and easily, and a recording medium.
  • SOLUTION: A metabolism condition analyzer is provided with an input means for inputting information about the body of a subject, a control means for processing this information and an output means for outputting results of the processing. The information consists of name, age, sex, race, height, weight, bioelectric resistance value and the date and time of measurement. A data file consisting the control means stores evaluation data of a metabolic condition which is previously determined by medical judgment based on a combination of an internal respiration index and oxygen consumption and energy production in adipose tissues. These are computed by calculating the value obtained by subtracting one from a body density calculated from the height, weight of the subject and the bioelectric resistance value and then multiplying the value. Welcome to your investment or co-operation.
実用化イメージ

Researchers

Cyclotron and Radioisotope Center

Katsunori Nonogaki

MEDICINE DETERMINATION SUPPORT SYSTEM AND MEDICINE DETERMINATION SUPPORT PROGRAM

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特徴・独自性
  • 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.
実用化イメージ

Researchers

Cyclotron and Radioisotope Center

Katsunori Nonogaki

The Novel Ultrasound Irradiation Device

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特徴・独自性
  • Dr. Katsunori Nonogaki has developed the novel ultrasound irradiation device, which can improve the autonomic nervous system activity and peripheral circulation. In addition, the ultrasoud device can improve hypertension and hyperglycemia within 20 min in subjects with drug-resistant hypertension and diabetes. Our initial device was approved in Japan (226AIBZX00028000). This device will be avaliable for the treatment of 1) muscle pain, 2) the autonomic neural dysfunction and stress-related disorders, 3) hypertention, and 4) diabetes. Moreover, the device will be usefull for your healthy life and aging care.
実用化イメージ

Our aims are to export the device internationally. We seek the investment and international business partners.

Researchers

Cyclotron and Radioisotope Center

Katsunori Nonogaki

Development of Production System of Valuable Proteins Using a Koji-Mold, Aspergillus Oryzae, as a Host

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特徴・独自性
  • Because a koji-mold, Aspergillus oryzae, has an ability to secret a higher amount of proteins and is regarded as a safe microorganism, it has been expected as a promising host for production of useful proteins derived from plants and animals. However, Aspergillus oryzae produces various proteolytic enzymes that could degrade heterologous proteins produced, and hence we constructed mutant strains in which a transcription factor gene involved in proteolytic enzyme production was disrupted. In addition, codon optimization of heterologous gene resulted in a significant increase in the stability of heterologous gene transcripts. These attempts would lead to an increase in the amount of valuable proteins produced.
実用化イメージ

The technology could be applied to the high-level production of pharmaceutical proteins and industrially useful enzymes. We look forward to developing the collaborative project with enzyme and pharmaceutical industries.

Researchers

Graduate School of Agricultural Science

Katsuya Gomi

Digitizing Democracy in Japan

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特徴・独自性
  • The global pandemic is forcing democracies around the world to hold non-contact elections. Internet voting is considered a viable option, but there is little chance of introducing it in Japan. Similarly, while there is an urgent need to implement online parliament to reduce the risk of infection, only a minority of parliaments are willing to do so. In this study, we will identify the factors that hinder the digitalization of democracy and pursue the possibility of social implementation in Japan.
実用化イメージ

This study can contribute to election commission practices and vendor voting terminal development.

Researchers

Graduate School of Information Sciences

KAWAMURA Kazunori

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

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特徴・独自性
  • 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.
実用化イメージ

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.

Researchers

New Industry Creation Hatchery Center

Kazue Kurihara

Innovative anemia therapy: Development of new anemia drugs targeting the novel mechanism of erythropoiesis

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特徴・独自性
  • Strong points
  • Anemia is a very prevalent disease. Nevertheless, an effective therapy is yet to be discovered. Erythropoietin is effective only for those with renal dysfunction. We have found that inhibition of an enzyme for epigenetic regulation results in a prominent increase of erythropoiesis, pointing to a new target for anemia therapy. We have also generated a new, cell-based assay system for the enzymatic activity and carried out small molecule screening.
  • Collaboration with industry partners
  • We are seeking a collaboration to accelerate the development of new anemia drugs based on these findings. Together we will advance the development of the candidate molecules currently identified as well as conduct further screening of larger chemical space for better candidates and/or for drug repositioning.
実用化イメージ

Researchers

Graduate School of Medicine

Kazuhiko Igarashi

Design and Fabrication of Micro-Optical Devices Based on Optics, Especially Optical MEMS and Sensors

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特徴・独自性
  • On the basis of optical engineering, optical technologies for sensing mechanical motion, spectroscopic properties, and other physical/chemical characteristics are investigated. Moreover, using semiconductor micro/nano-fabrication technology, integrated micro-optical sensors, micro/nano optical systems, optical micro-electro-mechanical systems (MEMS) are studied. Micro laser scanner for display, deformable mirror for telescope, optical displacement encoder, and fluorescent analysis system are the examples of research topics.
実用化イメージ

Optical design, Optical industries, Industries relating to semiconductor micro fabrication and MEMS, optical telecommunications, etc.

Researchers

New Industry Creation Hatchery Center

Kazuhiro Hane

Innovative Preparing and Thick Coating Technique without Heat Affected Zone and Phase Transformation

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特徴・独自性
  • The cold spray (CS) technique is known as a new technique not only for coating but also for thick depositions. It has many advantages, i.e. dense coating, high deposition rate, low oxidation, and no phase transformation. We have been carrying out establishment of innovative preparing and coating techniques using the CS, and maintenance of reliability and safety of the cold sprayed repairing parts and coatings. Moreover, in order to evaluate the compatibility between a substrate material and particles based on an adhesion mechanism and scientific basis, various adhesion conditions are examined a micro / nano-structure observation and a molecular simulation.
実用化イメージ

Our targets were mainly hot section parts of thermal power plants and reactor piping and tubes etc. Recently, it is possible to make a ceramic coating. Therefore, we accelerate the evolution of the other fields including the creation of the functionality materials in near future.

Researchers

Graduate School of Engineering

Kazuhiro Ogawa

Magnetic Applications and Magnetic Materials

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特徴・独自性
  • The aim of our research are to obtain the high accuracy sensor system for the signals from the human body or electric devices and to obtain the system for approaching action to the human body by using the nano-scale controlled magnetic materials and by the development of the devices under the functions of the magnetics.
  • We studied the mechanism of obtaining the magnetic anisotropy of the magnetic thin films for the sensitive magnetic sensors. We obtained a non-metal probe for high frequency magnetic field, and confirmed the probe can measure the high frequency magnetic field with its phase information. In addition, 3D position detecting system using magnetic markers was studied to improve its position accuracy. The study about the magnetic actuator driven by the external magnetic field was carried out for biomimetic robots using the rotational magnetic field, and small wireless pumps were obtained and clarified for their application for an artificial heart-support pump.
実用化イメージ

<Medical Applications>
Motion system for capsule endoscope, Support system for endoscopic surgery, Position detecting system (motion capture), Wireless pump for artificial heart
<Sensors>
Magnetic field sensors, Strain sensors, Wireless sensors
<Materials>
Electrical steels of ultra low loss, Electrochemicaly produced materials (structure controlled in nano-scale)

Researchers

Research Institute of Electrical Communication

Kazushi Ishiyama

Research and Development of Space Exploration Robots

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特徴・独自性
  • We study and develop mobile robotics technology for lunar and planetary exploration. Our technology is featured by rich experience in locomotion mechanisms for highly rough terrain and advanced slippage control in loose soil environment. Also by 3D map building technology using a laser scanner for autonomous collision avoidance and for operator assistance in remote control/tele-operation. We also contributed to the design and development of Hayabusa and Hayabusa-2, which are sample-return probes developed and operated by Japanese space agency JAXA.
実用化イメージ

These technologies are also applied to terrestrial robots for such as surveillance or disaster response.

Researchers

Graduate School of Engineering

Kazuya Yoshida

Design and Development of 50 kg-class Micro Satellites

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特徴・独自性
  • We design and develop micro satellites in a format of 50 cm cubic size and 50 kg mass. We have developed the first and second micro satellites of Tohoku University, named “RISING” and “RISING-2”, launched by using JAXA’s H-IIA rocket vehicle in January 2009 and May 2014, respectively. Both satellites are operated from our ground station in the university. Particularly, RISING-2 has succeeded in capturing high precision color images of the Earth's surface at a spatial resolution of 5m, the highest in the world among 50kg-class satellites. Now the third micro satellite for international science mission is under the development. In addition, we are active in nano satellite development. The first nano-sat “RAIKO” in a 10 by 10 by 20 cm format was launched from the International Space Station in 2012. More nano-sats are under the development.
実用化イメージ

We would like to make innovation in space business by introducing a new paradigm for rapid and low cost development of space systems for various missions of remote sensing, earth observation, and space exploration. We have rich experience in the development of spacecraft bus systems, onboard avionics systems and mission instruments. Collaborations with technology and business partners are welcome.

Researchers

Graduate School of Engineering

Kazuya Yoshida