IZUMIDA Yuki
(Lecturer/Division of Transdisciplinary Sciences)
Department of Complexity Science and Engineering/Nonequilibrium thermodynamics and statistical mechanics/nonlinear dynamics
Career Summary
March 2006: Graduated from Faculty of Science, Yamagata University
March 2011: Received Doctor of Philosophy in the field of Quantum and Condensed-Matter Physics at the Graduate School of Science, Hokkaido University
April 2010: Research Fellowship for Young Scientists (DC2) (Hokkaido University)
April 2011: Research Fellowship for Young Scientists (PD) (The University of Tokyo)
April 2012: Project Collaborative Researcher, Graduate School of Science, The University of Tokyo
May 2012: Project Researcher, Graduate School of Science, The University of Tokyo
July 2012: Project Research Fellow, Center for Simulation Sciences, Ochanomizu University
April 2013: Research Fellowship for Young Scientists (PD) (Ochanomizu University)
April 2015: Assistant Professor, Graduate School of Information Science, Nagoya University
April 2017: Assistant Professor, Graduate School of Informatics, Nagoya University
May 2019: Lecturer, Graduate School of Frontier Sciences, The University of TokyoGraduate school:
Educational Activities
Graduate school:
Faculty:Bio Information Processing
Research Activities
I mainly study nonequilibrium thermodynamics and nonlinear dynamics.
In particular, I have been working on fundamental aspects of nonequilibrium statistical mechanics through the study of the efficiency of heat engines.
It was pointed out that conventional quasistatic heat engines achieving maximum efficiency output vanishing power, which is practically useless.
We worked on this problem by proposing a molecular kinetic model of a finite-time Carnot cycle and verified the validity of efficiency bound of efficiency at maximum power for heat engines (Curzon-Ahlborn efficiency), which had been known as a practical value.
We also succeeded in explaining the reason for achieving the bound by the finite-time Carnot cycle in terms of fundamental linear irreversible thermodynamics.
In recent years, we have been working on studies on more complex systems fusing thermodynamics and nonlinear dynamics. They include the construction of energetics of synchronization of coupled oscillators such as hydrodynamically interacting flagella of microorganisms and the elucidation of the rotational mechanism of a low-temperature-differential Stirling engine based on mathematical modeling. We expect that these studies contribute to the understanding and control of biological function and engineering innovations.
Literature
1) Y. Izumida, K. Okuda: "Molecular kinetic analysis of a finite-time Carnot cycle", EPL(Europhysics Letters), 83(6), 60003 (2008).
2) Y. Izumida, K. Okuda: "Onsager coefficients of a finite-time Carnot cycle", Physical Review E 80(2), 021121 (2009).
3) Y. Izumida, K. Okuda: "Work Output and Efficiency at Maximum Power of Linear Irreversible Heat Engines Operating with a Finite-Sized Heat Source", Physical Review Letters, 112(18), 180603 (2014).
4) Y. Izumida, H. Kori, U. Seifert: "Energetics of synchronization in coupled oscillators rotating on circular trajectories", Physical Review E 94(5), 052221 (2016).
5) Y. Izumida: "Nonlinear dynamics analysis of a low-temperature-differential kinematic Stirling heat engine", EPL(Europhysics Letters), 121(5), 50004 (2018).
Other Activities
Member of The Physical Society of Japan
Future Plan
Our laboratory aims to become a leading center of unique study on nonlinear and nonequilibrium physics fusing ideas from science and engineering.
Messages to Students
Acquire various fields of academic study with much curiosity.
It will be a valuable experience for you and your life to join the process of creating new knowledge.