Hyperbolic waveguide for long-distance transport of near-field heat flux

Messina, Riccardo; Ben‐Abdallah, Philippe; Guizal, Brahim; Antezza, Mauro; Biehs, Svend‐Age

doi:10.1103/physrevb.94.104301

Cited by 69 publications

(48 citation statements)

References 57 publications

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“…For higher emitter temperatures, increasing the chemical potential may result in a larger heat transfer rate since the high-frequency polaritons would be more significant. The strong dependence of the near-field heat transfer on the chemical potential offers another way to actively tune near-field heat transfer besides changing N [41,42]. Note that after the submission of this paper, a paper studying similar system appeared [43].…”

Section: Effect Of Chemical Potential and Number Of Layersmentioning

confidence: 93%

Near-field heat transfer between graphene/hBN multilayers

et al. 2017

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We study the radiative heat transfer between multilayer structures made by a periodic repetition of a graphene sheet and a hexagonal boron nitride (hBN) slab. Surface plasmons in a monolayer graphene can couple with a hyperbolic phonon polaritons in a single hBN film to form hybrid polaritons that can assist photon tunneling. For periodic multilayer graphene/hBN structures, the stacked metallic/dielectric array can give rise to a further effective hyperbolic behavior, in addition to the intrinsic natural hyperbolic behavior of hBN. The effective hyperbolicity can enable more hyperbolic polaritons that enhance the photon tunneling and hence the near-field heat transfer. However, the hybrid polaritons on the surface, i.e. surface plasmon-phonon polaritons, dominate the near-field heat transfer between multilayer structures when the topmost layer is graphene. The effective hyperbolic regions can be well predicted by the effective medium theory (EMT), thought EMT fails to capture the hybrid surface polaritons and results in a heat transfer rate much lower compared to the exact calculation. The chemical potential of the graphene sheets can be tuned through electrical gating and results in an additional modulation of the heat transfer. We found that the near-field heat transfer between multilayer structure does not increase monotonously with the number of layer in the stack, which provides a way to control the heat transfer rate by the number of graphene layers in the multilayer structure. The results may benefit the applications of near-field energy harvesting and radiative cooling based on hybrid polaritons in two-dimensional materials.

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Section: Effect Of Chemical Potential and Number Of Layersmentioning

confidence: 93%

Near-field heat transfer between graphene/hBN multilayers

et al. 2017

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“…Another more striking advantage is that the hyperbolic modes are propagating inside the mHMM [53,54], whereas the surface modes are strongly confined to surface of the thermal emitter [98,99] as is also demonstrated in Figure 12. This property might be interesting for applications that involve the transport of heat radiation by an mHMM [55] or applications that are based on light absorption within a thick layer close to the surface like near-field thermophotovoltaics [100][101][102][103], for instance. Therefore, it is reasonable to quantify the the contribution of the hyperbolic modes and/or Bloch modes to the heat flux.…”

Section: Surface Modes Vs Hyperbolic Modesmentioning

confidence: 99%

Near-Field Heat Transfer between Multilayer Hyperbolic Metamaterials

Biehs

Ben‐Abdallah

2016

Zeitschrift Für Naturforschung A

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Abstract:We review the near-field radiative heat flux between hyperbolic materials focusing on multilayer hyperbolic meta-materials. We discuss the formation of the hyperbolic bands, the impact of ordering of the multilayer slabs, as well as the impact of the first single layer on the heat transfer. Furthermore, we compare the contribution of surface modes to that of hyperbolic modes. Finally, we also compare the exact results with predictions from effective medium theory.

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“…Numerical scattering techniques were applied to study HT in complex systems with analytically unknown scattering properties, e.g., in systems with periodic structures, cones, finite cylinders, or cubes [21][22][23][24]. General formalisms for HR, HT, and nonequilibrium Casimir forces in many-body systems have been recently presented and applied [18,[25][26][27][28][29][30][31][32]. HT in systems, where objects are * asheichyk@is.mpg.de small compared to all other length scales, can be relatively easily studied numerically, because all the particles can be modeled by dipole polarizabilities [33][34][35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Heat radiation and transfer for point particles in arbitrary geometries

2017

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We study heat radiation and heat transfer for pointlike particles in a system of other objects. Starting from exact many-body expressions found from scattering theory and fluctuational electrodynamics, we find that transfer and radiation for point particles are given in terms of the Green's function of the system in the absence of the point particles. These general expressions contain no approximation for the surrounding objects. As an application, we compute the heat transfer between two point particles in the presence of a sphere of arbitrary size and show that the transfer is enhanced by several orders of magnitude through the presence of the sphere, depending on the materials. Furthermore, we compute the heat emission of a point particle in front of a planar mirror. Finally, we show that a particle placed inside a spherical mirror cavity does not radiate energy.

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Hyperbolic waveguide for long-distance transport of near-field heat flux

Cited by 69 publications

References 57 publications

Near-field heat transfer between graphene/hBN multilayers

Near-field heat transfer between graphene/hBN multilayers

Near-Field Heat Transfer between Multilayer Hyperbolic Metamaterials

Heat radiation and transfer for point particles in arbitrary geometries

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