The effect of the synergy between two sources of non-equilibrium on thermal transport

NATALIA BERAHA; ROBERTO BARRETO; CARUSELA M. F; SOBA A

cordoba

Workshop; Latin American Workshop on Nonlinear Phenomena, XIII LAWNP; 2013

universidad nacional de córdoba

Recent works have shown that it is possible to achieve conduction and thermal rectification of energy in one dimensional systems subjected to different types of sources of non-equilibrium, such as thermal environments, external fields, mechanical actions, etc. In each case, the heat flow and the possibility of thermal rectification are determined both by the characteristics of the sources of non equilibrium and by the characteristics of the system (structure, symmetries, size, among others). Depending on the relevant parameters the system can behave as a thermal insulator or a conductor rectifying the energy flow. However, when time dependent external sources of nonequilibrium are present, their frequencies will play a fundamental role. What happen when two of these non equilibrium forces act simultaneously in the system? Is it possible to achieve a synergic effect on the energy transport along the devices?  We find that, depending on the frequency regime considered, the cooperative effect will produce a singe or multi-resonant energy transport phenomena.  How the size of the system affects this resonant phenomena? In this poster we will discuss and answer these questions for a one dimensional system coupled to thermal reservoirs subject to an external driving.