Volume 84, Number 4, November 2008
|Number of page(s)||5|
|Published online||13 November 2008|
Ratcheting heat flux against a thermal bias
Department of Physics and Centre for Computational Science and Engineering, National University of Singapore - Singapore 117542, Republic of Singapore
2 Institut für Physik, Universität Augsburg - Universitätsstr. 1, D-86135 Augsburg, Germany
3 NUS Graduate School for Integrative Sciences and Engineering - Singapore 117597, Republic of Singapore
Accepted: 13 October 2008
Merely rocking the temperature in one heat bath can direct a steady heat flux from cold to hot against a (time-averaged) non-zero thermal bias in stylized nonlinear lattice junctions that are sandwiched between two heat baths. Likewise, for an average zero-temperature difference between the two contacts a net, ratchet-like heat flux emerges. Computer simulations show that this very heat flux can be manipulated and even reversed by suitably tailoring the frequency (≲ 100 MHz) of the alternating-temperature field.
PACS: 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 07.20.Pe – Heat engines; heat pumps; heat pipes / 05.90.+m – Other topics in statistical physics, thermodynamics, and nonlinear dynamical systems
© EPLA, 2008
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.