Article
Accelerating the Heat Diffusion: Fast Thermal Relaxation of a Microcantilever
Author/s | Pottier, Basile
Plata Ramos, Carlos Alberto Trizac, Emmanuel Guéry-Odelin, David Bellon, Ludovic |
Department | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Publication Date | 2023-03-22 |
Deposit Date | 2024-02-20 |
Abstract | In most systems, thermal diffusion is intrinsically slow with respect to mechanical relaxation. We devise here a generic approach to accelerate the relaxation of the temperature field of a one-dimensional object, in order ... In most systems, thermal diffusion is intrinsically slow with respect to mechanical relaxation. We devise here a generic approach to accelerate the relaxation of the temperature field of a one-dimensional object, in order to beat the mechanical time scales. This approach is applied to a micrometer-sized silicon cantilever, locally heated by a laser beam. A tailored driving protocol for the laser power is derived to quickly reach the thermal stationary state. The model is implemented experimentally yielding a significant acceleration of the thermal relaxation, up to a factor 30. An excellent agreement with the theoretical predictions is reported. This strategy allows a thermal steady state to be reached significantly faster than the natural mechanical relaxation. |
Funding agencies | Agence Nationale de la Recherche. France Ministerio de Ciencia e Innovación (MICIN). España Agencia Estatal de Investigación. España European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) |
Project ID. | ANR-18-CE30-0013
PID2021-122588NB-I00 |
Files | Size | Format | View | Description |
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PhysRevApplied.19.034072.pdf | 4.437Mb | [PDF] | View/ | |
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