Enhanced radiative heat transfer between nanostructured gold plates

Guérout, R.; Lussange, J.; Rosa, F. S. S.; Hugonin, Jean‐Paul; Dalvit, Diego A. R.; Greffet, Jean‐Jacques; Lambrecht, Astrid; Reynaud, Serge

doi:10.1103/physrevb.85.180301

Cited by 91 publications

(75 citation statements)

References 20 publications

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“…Clearly the use of a structured surface increases the thermal Casimir force and makes the effect easier to be observed at shorter distances. A possible explanation is that the nanostructures change the spectral mode density, especially in the infrared frequency domain, so that thermal effects become enhanced, as it has already been pointed out in heat-transfer phenomena between gratings [16,17].…”

Section: Numerical Evaluationsmentioning

confidence: 99%

Thermal Casimir force between nanostructured surfaces

et al. 2013

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We present detailed calculations for the Casimir force between a plane and a nanostructured surface at finite temperature in the framework of the scattering theory. We then study numerically the effect of finite temperature as a function of the grating parameters and the separation distance. We also infer nontrivial geometrical effects on the Casimir interaction via a comparison with the proximity force approximation. Finally, we compare our calculations with data from experiments performed with nanostructured surfaces.

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Section: Numerical Evaluationsmentioning

confidence: 99%

Thermal Casimir force between nanostructured surfaces

et al. 2013

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“…More recently, nanostructured surfaces have been theoretically considered in the contexts of both force [32][33][34][35] and heat transfer [36,37]. Experimentally, the force has been measured between a sphere and a dielectric [38,39] or metallic [40] grating.…”

Section: Introductionmentioning

confidence: 99%

Casimir-Lifshitz force out of thermal equilibrium between dielectric gratings

et al. 2014

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We calculate the Casimir-Lifshitz pressure in a system consisting of two different one-dimensional dielectric lamellar gratings having two different temperatures and immersed in an environment having a third temperature. The calculation of the pressure is based on the knowledge of the scattering operators, deduced using the Fourier modal method. The behavior of the pressure is characterized in detail as a function of the three temperatures of the system as well as the geometrical parameters of the two gratings. We show that the interplay between nonequilibrium effects and geometrical periodicity offers a rich scenario for the manipulation of the force. In particular, we find regimes where the force can be strongly reduced for large ranges of temperatures. Moreover, a repulsive pressure can be obtained, whose features can be tuned by controlling the degrees of freedom of the system. Remarkably, the transition distance between attraction and repulsion can be decreased with respect to the case of two slabs, implying an experimental interest for the observation of repulsion.

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“…Here, the unknowns are volume currents within objects rather than surface currents as in FSC, and can therefore easily handle more complex structures, including inhomogeneous bodies with temperature gradients or spatially varying permittivities. In contrast to recently developed scattering-matrix methods, [28][29][30][31][32][33][34][35][36][37][38][39][40] the FVC and FSC methods do not require a separate basis of incoming/outgoing wave solutions to be selected (a potentially difficult task in geometries involving interleaved objects or complex structures favoring nonuniform spatial resolution), although VIE can be used to compute the scattering matrix if desired. We show that regardless of which quantity is computed, the final expressions for power and momentum transfer are based on simple trace formulas involving well-studied VIE and current-current correlation matrices that encode the spectral properties of fluctuating sources.…”

Section: Introductionmentioning

confidence: 99%

Fluctuating volume-current formulation of electromagnetic fluctuations in inhomogeneous media: Incandescence and luminescence in arbitrary geometries

et al. 2015

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We describe a fluctuating volume-current formulation of electromagnetic fluctuations that extends our recent work on heat exchange and Casimir interactions between arbitrarily shaped homogeneous bodies [Phys. Rev. B. 88, 054305] to situations involving incandescence and luminescence problems, including thermal radiation, heat transfer, Casimir forces, spontaneous emission, fluorescence, and Raman scattering, in inhomogeneous media. Unlike previous scattering formulations based on field and/or surface unknowns, our work exploits powerful techniques from the volume-integral equation (VIE) method, in which electromagnetic scattering is described in terms of volumetric, current unknowns throughout the bodies. The resulting trace formulas (boxed equations) involve products of well-studied VIE matrices and describe power and momentum transfer between objects with spatially varying material properties and fluctuation characteristics. We demonstrate that thanks to the low-rank properties of the associated matrices, these formulas are susceptible to fast-trace computations based on iterative methods, making practical calculations tractable. We apply our techniques to study thermal radiation, heat transfer, and fluorescence in complicated geometries, checking our method against established techniques best suited for homogeneous bodies as well as applying it to obtain predictions of radiation from complex bodies with spatially varying permittivities and/or temperature profiles.

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Enhanced radiative heat transfer between nanostructured gold plates

Cited by 91 publications

References 20 publications

Thermal Casimir force between nanostructured surfaces

Thermal Casimir force between nanostructured surfaces

Casimir-Lifshitz force out of thermal equilibrium between dielectric gratings

Fluctuating volume-current formulation of electromagnetic fluctuations in inhomogeneous media: Incandescence and luminescence in arbitrary geometries

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