题 目：Can We Control The Heat Current? A Dynamical System’s Perspective
报告人：Prof. Giulio Casati（University of Insubria ,Como-Italy）
The understanding of the microscopic mechanisms which determine the macroscopic laws of heat transport is one of the main problems of statistical mechanics. On the other hand, providing a sustainable supply of energy to the world’s population will become a major societal problem for the 21st century as fossil fuel supplies decrease and world demand and environmental concern increases. Thermoelectric phenomena, which involve the conversion between thermal and electrical energy, and provide a method for heating and cooling materials, are expected to play an increasingly important role in meeting the energy challenge of the future.
Here we discuss a new approach , which is rooted in nonlinear dynamical systems, for increasing the efficiency of thermoelectric machines. The main focus will be on the physical mechanisms, unveiled by these dynamical models, which lead to high thermoelectric efficiency, approaching the Carnot limit.
M. Terraneo, M. Peyrard and G. Casati: " Controlling the energy flow in nonlinear lattices: a model for athermal rectifier" Phys. Rev. Lett.88, 094302 (2002).
Baowen Li, Lei Wang and Giulio Casati: "Thermal Diode: Rectification of heat flux"Phys. Rev. Lett. 93,184301 (2004).
Baowen Li, Lei Wang and Giulio Casati: "Negative differential thermal resistance and thermal transistor“.Appl. Phys. Lett. 88 ,143501 (2006).
Giulio Casati, C. Mejia-Monasterio and T. Prosen, " Magnetically Induced Thermal Rectification " Phys. Rev. Lett. 98,104302(2007).
G. Casati, C. Mejia Monasterio and T. Prosen: "Increasing thermoelectric efficiency towards the Carnot limit" Phys. Rev. Lett.
G. Benenti and G. Casati, "Increasing thermoelectric efficiency: Dynamical models unveil microscopic mechanisms" Phil. Trans. R. Soc. A. 369,466 (2011).
S.Lepri and G. Casati :"Asymmetric wave propagation in Nonlinear systems". Phys. Rev. Lett. 106, 164101(2011)
K. Saito, G. Benenti, G. Casati and T. Prosen:"Thermopower with broken time-reversal symmetry" . Phys. Rev. B 84, 201306 (2011)
G. Benenti, K. Saito and G. Casati, "Thermodynamic Bounds on efficiency for Systems with Broken Time-reversal Symmetry" . Phys. Rev. Lett. 106, 230602 (2011).
Jiao Wang, Emmanuel Pereira and Giulio Casati: "Thermal rectification in graded materials". Phys. Rev. E 86, 010101 (2012).
1987-1998, Full Professor of Theoretical Physics, Milan University
1993-1998, Dean of the Faculty of Sciences, Milan University
1993-1998, Director of the Centre for Nonlinear and Complex Systems-Como
Since 1998, Full Professor of Theoretical Physics, University of Insubria-Como
Since 2005, Distinguished Professor National University of Singapore