Plasticity of crystalline materials such as metals and ceramics depend strongly on behavior of lattice defects such as dislocations and grain boundaries. We aim to develop and design the advanced structural and functional materials such as heat resistant alloys, permanent magnets, superelastic alloys and metallic glass by controlling lattice defects in nano- and micro-scale.
For the purpose of creation of new quantum functional materials that put the realization of large-scale information society friendly to the environment, we have investigated the manufacturing and control of microstructures in semiconductors, “bottom-up control of materials function”. For example, the thin-film crystal growth technique which is controlled at the atomic level can realize effective quantum size effects, and can make different color laser diodes and light emitting diodes, and ultrafast transistors. Also, by manipulating impurities having a function in semiconductors, it can enhance its functionality to the limit.
We study plasma in order to control and use it in various applications that will help the world to solve energy/biological/environmental problems. We generate various plasmas in various environments (gas, liquid, or supercritical fluid) and use advanced diagnostic methods to control and understand them. Current studies in applications include thin film deposition, surface modification, nano-structured materials synthesis, treating biological molecules, and environmental treatments.
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