Tohoku University. Research Profiles

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"G" Theme - 2 Result(s)

G

 G

Generation of Functional Interface by Micro/Meso Mechanical Manufacturing (M4 process) technology

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Features

Recently, micro parts, such as glass waveguide, micro lens array and holographic optical element, made from materials other than silicon are increasingly demanded. The sizes of the micro parts are below 1 mm (so-called sub-millimeter size), and the shapes are complex. As high hardness, high brittleness and high melting point predominate most of these materials, micro parts of these materials are particularly difficult to be machined, even by lithography techniques, laser beam and electron beam. Additionally, high efficiency and low cost micro manufacturing method is highly expected. Our lab concentrates on promoting innovations of mechanical manufacturing technologies to realize micro fabrication, especially on developing new processing principle of Micro/Meso Mechanical Manufacturing (M^4 process) at the frontier of manufacturing technology.
The M^4 process includes: 1. Aspherical micro-grinding, 2. Micro aspherical polishing 3. Micro cutting of aspheric micro lens array, 4. Micro abrasive jet machining (AJM), 5. Micro powder jet deposition (PJD), 6. Micro ultrasonic machining, 7. Micro Electrical discharge machining (EDM), 8. Micro laser machining.

惻Strong Collaboration among Industry, Academia and Government
We believe that greater importance will be attached to cooperation among academic institutions and between academia and government in research, with the results being put to practical use through joint projects between academia and industry. The fundamental mission of our research group is to encourage joint research in industry. In addition, we frequently provide consultation regarding technological problems in various companies.

Graduate School of Biomedical Engineering
KURIYAGAWA Tsunemoto, Professor PhD (Engineering)

Generation of Rice Plants Suitable for Biofuel Production

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Features

To generate a rice plant suitable for efficient biofuel production from its straw, we examined effects of overexpression of cellulase on saccharification of straw. The transgenic plant constitutively overexpressing cellulase showed enhanced saccharification, but various physiological and morphological abnormalities were also observed. To overcome this problem, a senescence-inducible promoter was used to express the cellulase. The plants successfully avoided the problem and showed enhanced saccharification after senescence.

Targeted Application(s)/Industry

Rice straw will be an efficient material for biofuel production. This method can be applied to other plants. In combination with highly engineered microorganisms for saccharification and fermentation, this method will contribute to efficient production of biofuels.

Graduate School of Agricultural Science
ITO Yukihiro, Associate Professor PhD