Department of Applied Science for Electronics and Materials, Kyushu University

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Nonlinear Material Physics Laboratories

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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  • 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)

[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.

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  • Professor / Satoshi HataProfessor / Satoshi Hata
  • Associate Professor / Takeshi YoshitakeAssistant Professor / Hikaru Saito

Three-dementional dislocations in steels visualized by electron tomography