Contribution of the acoustic waves to near-field heat transfer

Abstract

Calculations of the radiative and phonon heat transfer between metals in an extreme near field in presence of electrostatic potential difference are given. Potential difference leads to a coupling between the radiation field and acoustic waves in solid, as a result of which the heat flux between two gold plates associated with p -polarized electromagnetic waves increases by many orders of magnitude as the potential difference varies from 0 to 10V. The radiative heat transfer is compared with the phonon heat transfer associated with the electrostatic and van der Waals interactions between the surface displacements. For large potential difference and small distances the radiative heat transfer is reduced to the electrostatic phonon heat transfer. A particular case of surface acoustic waves - Rayleigh waves is studied in details. Conditions are obtained for the existence of surface phonon polaritons associated with the interaction of Rayleigh waves with an electromagnetic field. The surface Rayleigh and bulk acoustic waves can give contributions of the same order. The obtained results can be used to control heat fluxes at the nanoscale using the potential difference and to create coherent radiation sources based on the properties of the Rayleigh waves

12pages, 4 figure

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Cited by in corpus (10)

• Extreme Near-Field Heat Transfer Between Gold Surfaces
• Atomistic simulation of phonon heat transport across metallic nanogaps
• Electric double layer effect in an extreme near-field heat transfer between metal surfaces
• Role of Nottingham effect in the heat transfer in extreme near-field regime
• Radiative Resistance at The Nano-scale: Thermal Barrier
• Coupling between conduction and near-field radiative heat transfer in tip-plane geometry
• Radiative heat exchange driven by acoustic vibration modes between two solids at the atomic scale
• Linear and nonlinear response for radiative heat transfer in many-body systems
• Electronic heat tunneling between two metals beyond the WKB approximation
• Fluctuational Electrodynamics in Atomic and Macroscopic Systems: van der Waals Interactions and Radiative Heat Transfer