In collaboration with Prof. Nishiguchi (Yokohama National University).
I develop theory and numerical methods for nonequilibrium thermodynamics in mesoscopic electronics, working closely with experimental collaborators. My focus is on quantifying irreversibility using the entropy production rate and its decomposition into housekeeping and excess contributions across nonequilibrium steady states (NESSs).
In collaborative studies of a room-temperature silicon quantum dot driven by a sinusoidal reservoir voltage, the experiments were performed by colleagues, and I provided theoretical support by solving the time-dependent master equation using a Fourier-series approach and analyzing the results within stochastic thermodynamics. This enabled quantitative evaluation of entropy production and nonequilibrium thermodynamic functions, and helped assess operational efficiency under periodic driving.