Department of Applied Science for Electronics and Materials, Kyushu University

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Quantum physicality course

In this course, macroscopic dissipative structures present in the nature are studied by statistical mechanics and nonlinear dynamics, and nanostructures and their evolutions of materials are investigated by advanced electron microscopy and thin-film and device technologies.

Nonlinear Physics Laboratory

[Keywords] fractal, pattern formation, nonequilibrium open system, nonlinear dynamics, dendrite growth, diffusion-limited aggregation, drawing effect of oscillator, space-time chaos, granular physics, fracture phenomena

[Research outline] The clarification of a physical mechanism of the dissipative structure in the nonlinear/nonequilibrium open system is aimed, and analysis is conducted for a dendritic form which is a regular branch state, and a fractal form which is an irregular branch structure, and the like, through experiment and computation simulation. Further, analysis and computation simulation of mathematic models such as a complicated pattern that is generated in a liquid crystal electric convection, a movement of a growing interface such as crystal growth, drawing of oscillator aggregate and dynamics of evolution are also performed by using a concept of nonlinear dynamics.

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  • Professor / Haruo HonjoProfessor / Haruo Honjo
  • Associate Professor /Hidetsugu SakaguchiAssociate Professor /Hidetsugu Sakaguchi
Dendrite crystal growing from a supersaturated NH4Cl aqueous solution
Dendrite crystal growing from a supersaturated NH4Cl aqueous solution

Quantum Materials Physics Laboratory

[Keywords] electron tomography (ET), automated crystal orientation mapping (ACOM) by transmission electron microscopy (TEM), electron energy-loss spectroscopy (EELS), thin-film fabrication, physical vapor deposition (PVD), advanced materials for photoelectric conversion

[Research outline] Prof. Hata group is developing advanced methods of electron microscopy imaging and analysis, such as three-dimensional electron tomography, in order to utilize these methods for studies on materials science. For photoelectric conversion applications such as solar battery/photodiode, Profs. Yoshitake & Tominaga group fabricates thin films of carbon/iron/silicon-base environmental-friendly materials. Evaluations of physical properties of the fabricated thin-films and their applications to photoelectric conversion devices are also done in the same group.

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  • Professor / Satoshi HataProfessor / Satoshi Hata
  • Associate Professor / Takeshi YoshitakeAssociate Professor / Takeshi Yoshitake
  • Associate Professor / Takeshi YoshitakeAssistant Professor / Aki
    Tominaga

実際に試作したn型βFeSi2/p型Siフォトダイオードの写真とその概略図
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