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Thermal-Wave Diode
- Source :
- Physical Review Applied, Physical Review Applied, American Physical Society, 2021, 16 (4), pp.L041002. ⟨10.1103/physrevapplied.16.l041002⟩, Physical Review Applied, American Physical Society, 2021, 16 (4), pp.L041002. ⟨10.1103/PhysRevApplied.16.L041002⟩
- Publication Year :
- 2021
- Publisher :
- HAL CCSD, 2021.
-
Abstract
- International audience; Based on the spatiotemporal modulation of thermal conductivity and volumetric heat capacity, we propose a thermal-wave diode characterized by the rectification of the heat currents carried by thermal waves. By transforming Fourier's law for the heat flux and the diffusion equation for the temperature into equations with constant coefficients, it is shown that: (i) the rectification effect is generated by the simultaneous wavelike modulation of both thermal properties, such that it disappears in the absence of either of them, and (ii) the rectification factor can be optimized and tuned by means of the speed and phase difference of the variations of the heat capacity and thermal conductivity. High rectification factors, greater than 86%, are obtained for lower frequencies driving the propagation of thermal waves. The proposed thermal-wave diode is thus analogous to its electronic counterpart operating with modulated electrical currents and can open a vista for developing different types of thermal-wave logic components.
- Subjects :
- Materials science
Diffusion equation
General Physics and Astronomy
02 engineering and technology
Mechanics
021001 nanoscience & nanotechnology
01 natural sciences
Heat capacity
PACS: 65.40.-b
65.60.+a
65.90.+i
Thermal conductivity
Heat flux
Rectification
Volumetric heat capacity
0103 physical sciences
Thermal
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
[PHYS.MECA.THER]Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph]
[PHYS.COND]Physics [physics]/Condensed Matter [cond-mat]
[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics
010306 general physics
0210 nano-technology
Diode
Subjects
Details
- Language :
- English
- ISSN :
- 23317019
- Database :
- OpenAIRE
- Journal :
- Physical Review Applied, Physical Review Applied, American Physical Society, 2021, 16 (4), pp.L041002. ⟨10.1103/physrevapplied.16.l041002⟩, Physical Review Applied, American Physical Society, 2021, 16 (4), pp.L041002. ⟨10.1103/PhysRevApplied.16.L041002⟩
- Accession number :
- edsair.doi.dedup.....9143e76f51438747e1451e6d66d4020c