OKUMURA Ko

J-GLOBAL         Last updated: Nov 7, 2019 at 19:49
 
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Name
OKUMURA Ko
Affiliation
Ochanomizu University
Section
Faculty of ScienceDivision of Physics
Job title
Professor
Research funding number
80271500

Research Areas

 
 

Published Papers

 
Takako Tomizawa, Ko Okumura
Polymer Journal      Sep 2019   [Refereed]
Yuko Aoyanagi, Ko Okumura
Polymer   121648   Jul 2019   [Refereed]
Takako Tomizawa, Ko Okumura
Polymer   173 166   May 2019   [Refereed]
Midori Isobe, Ko Okumura
Journal of the Physical Society of Japan   88(2) 025001   Feb 2019   [Refereed]

Misc

 
K. Okumura
Physical Review B   52 13358-13367   Jan 1995
The self-consistent renormalization theory of the itinerant electron model was the first theory to show that the Curie-Weiss behavior of the magnetic susceptibility is not peculiar to the localized model. But the theory was justified on the basis ...
Yuko Aoyanagi, Ko Okumura
Physical Review Materials   3    May 2019
© 2019 American Physical Society. Recently, it has been found experimentally that hydrated nacre exhibits a nonlinear mechanical response. While mechanical nonlinearity has been shown to be important in other biological structures, such as spider ...
K. Okumura
Journal of Magnetism and Magnetic Materials   140-144 191-192   Jan 1995
The susceptibility is studied by the inversion method, which advances the Stoner theory systematically. This is because the method is a kind of perturbation theory and its first order calculation reproduces the mean-field theory. The second order ...
Hana Nakazato, Yuki Yamagishi, Ko Okumura
Physical Review Fluids   3    May 2018
© Published by the American Physical Society 2018. In hydrodynamic topological transitions, one mass of fluid breaks into two or two merge into one. For example, in honey-drop formation when honey is dripping from a spoon, honey is extended to sep...
K. Okumura, R. Fukuda
Physical Review E   47 1486-1498   Jan 1993
Using the field-theoretical formalism, nonequilibrium thermodynamics is discussed where the volume V(t) is changing with time. The time-dependent boundary condition on the wave function is handled by introducing the time-independent mode variables...

Research Grants & Projects

 
Soft matter physics of composite materials
Project Year: 1999   
Soft matter physics of capillarity
Project Year: 2002   
Multi-dimensional laser spectroscopy
Project Year: 1995   
Soft mater physics of gels
Project Year: 2002