@misc{10481/91560,
year = {2024},
month = {1},
url = {https://hdl.handle.net/10481/91560},
abstract = {According to conventional wisdom, a system placed in an environment
with a different temperature tends to relax to the temperature of the latter,
mediated by the flows of heat or matter that are set solely by the temperature
difference. It is becoming clear, however, that thermal relaxation is much
more intricate when temperature changes push the system far from
thermodynamic equilibrium. Here, by using an optically trapped colloidal
particle, we show that microscale systems under such conditions heat up
faster than they cool down. We find that between any pair of temperatures,
heating is not only faster than cooling but the respective processes, in fact,
evolve along fundamentally distinct pathways, which we explain with a new
theoretical framework that we call thermal kinematics. Our results change
the view of thermalization at the microscale and will have a strong impact on
energy-conversion applications and thermal management of microscopic
devices, particularly in the operation of Brownian heat engines.},
organization = {Projects EQC2018-004693-P, PID2020-116567GB-C22, PID2021-128970OA-I00 and PID2021-127427NB-I00 funded by MCIN/AEI/10.13039/501100011033/ FEDER, UE},
organization = {FEDER/Junta de Andalucía-Consejería de Transformación Económica, Industria,
Conocimiento y Universidades through projects P18-FR-3583 and A-FQM-644-UGR20},
organization = {Ministerio de Universidades (Spain) and Universidad de Granada under
the FPU grant FPU21/02569},
organization = {Studienstiftung des Deutschen
Volkes},
organization = {German Research Foundation through the Emmy
Noether Program GO 2762/1-2},
organization = {Open access funding provided by Max Planck Society.},
publisher = {Nature Publishing Group},
title = {Heating and cooling are fundamentally asymmetric and evolve along distinct pathways},
doi = {10.1038/s41567-023-02269-z},
author = {Ibáñez García, Miguel and Dieball, Cai and Lasanta Becerra, Antonio and Godec, Aljaž and Rica Alarcón, Raúl Alberto},
}