Tohoku University. Research Profiles

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"F" Theme - 8 Result(s)

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Fabrication of Imitative Stress Corrosion Cracking Specimens for the Development of Nondestructive Evaluation Techniques

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The emergence of stress corrosion cracking is one of the most important issues from the viewpoint of aging management and maintenance of nuclear power plants. There is a large discrepancy between stress corrosion cracking and other cracks such as fatigue cracks from the viewpoint of nondestructive testing and evaluations, which requires suitable specimens containing stress corrosion cracking for the development of nondestructive testing and evaluation techniques and also for personnel training. However, artificially introducing stress corrosion cracking needs large cost and long time. Furthermore, several studies have pointed out that such articial stress corrosion cracking is not always similar to natural ones. On the basis of the background above, we develop a method to fabricate "imitative" stress corrosion cracking specimens using diffusion bonding.

Targeted Application(s)/Industry

The method enables one to introduce a region whose response is almost identical to actual stress corrosion cracking from the viewpoint of nondestructive testing. Whereas the dimension of the region is accurately controllable, the method requires much less cost and time comparing the conventional ones using corrosive environment. Patent is already applied for.

Department of Quantum Science and Energy Engineering , Graduate School of Engineering
YUSA, Noritaka, Associate Professor Doctor of Engineering

Fabrication of Spintronics Materials by Artificial Nanostructure Control

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Our group works on the fabrication of materials and the fundamental study of physical phenomena for spintronics. Particularly, we are interested in magnetic ordered alloys, and fabricate nanolayered structures, tunnel junctions or composite device structures with those materials to investigate novel magnetic and magnetotransport properties. Recently we are also interested in the correlation between spin and heat currents, and investigate novel thermo-electric phenomena.

Targeted Application(s)/Industry

We hope to conduct collaborative research with a willing company for a practical application of new spintronic devices with low energy consumption and thermoelectric devices for energy harvesting.

Institute for Materials Research
TAKANASHI, Koki, Professor Doctor of Science

Fabrication of The Novel Designed Nanodrugs Composed of Poorly Water-Soluble Compounds

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One of our major research focuses is to design the novel drug nanoparticles, so called “Nano-prodrugs”, and to apply them as anticancer drugs or eye drops with excellent delivery efficiency. Nano-prodrugs are constructed by synthetic prodrugs molecules which contains poorly water-soluble substituent. They could be fabricated to nanoparticles with 100 nm or less in size by our reprecipitation technique, which has been used to create organic nanomaterials. We are aiming at practical application of our Nano-prodrugs in the near future.

Targeted Application(s)/Industry

Our reprecipitation technique for fabricating organic nanomaterials is a versatile technique that can be applied to various organic molecules as well as drug compounds. We hope to conduct collaborative research with a willing company on controlling and evaluating properties of the organic nanoparticles.

Institute of Multidisciplinary Research for Advanced Materials
KASAI, Hitoshi, Professor Doctor of Science

Food Palatability, Product Usability, and Preference; An Approach from Psychology and Neuroscience.

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My research interest is peoples' perception of external stimulus. Based on these researches and our knowledge, I can offer you an idea of the products that give consumers satisfaction. Also on the basis of psychological and neuro-scientifc experiences and knowledges, I can offer you a transdisciplinary approaches on human perception, cognition, emotion and decision making.

Targeted Application(s)/Industry

Marketing and developing of the products such as foods, beverages, fabric softeners, perfumes, body deodorants etc. The knowledges and research tools are also useful in regulating the malodor in the air pollution, in developing the public services and in elevating public quality of life.

Department of Psychology, Graduate School of Arts and Letters
SAKAI, Nobuyuki, Professor PhD of Human Sciences

Forecasting eruption transition through geologic and petrologic approaches

Features

1) In addition to geophysical observations, recent advances in volcanic stratigraphy and petrology would make us possible to forecast the transition of volcanic eruptions. We have been developing near-real-time volcanology based on the erupted materials in an early eruption stage.
2) Automation of textural analyses of erupted materials, Risk assessment of volcanic eruption based on eruption stratigraphy

Targeted Application(s)/Industry

Department of Earth Science, Graduate school of Science
NAKAMURA, Michihiko, Professor Doctor of Science

Fuel Cell and Energy Storage Using Ion Conduction in Ceramics

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Solid oxide fuel cell is a highly efficient power generation system operating at high temperatures using ion conducting ceramics. We conduct basic and multi-aspect research on the electrochemical and mechanical behaviors of the materials for further improving the efficiency, cost, and reliability of solid oxide fuel cells. We are also interested in the reverse operation of fuel cells which enables the storage of the electricity from renewable sources into hydrogen or methane, etc.

Targeted Application(s)/Industry

Graduate School of Environmental Studies
KAWADA, Tatsuya, Professor Doctor of Engineering

Functional and Molecular Imaging with Positron Emission Tomography (PET)

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Using positron emission tomography (PET), we can measure the regional metabolism, perfusion and signal transmission between neurotransmitters and receptors in various organ systems of living humans and animals, such as the brain and heart. Recent technical developments have shown that the mind, or at least some parts of it, can be demonstrated by "imaging".

Targeted Application(s)/Industry

Our group has had considerable achievements in clinical research on drug effects and side effects, elucidation of underlying mechanism of alternative and complementary therapies, as well as exercise physiology.

Cyclotron and Radioisotope Center
TASHIRO, Manabu, Professor doctor of medical sciences

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