Near-field thermal emission from metamaterials

Petersen, Spencer J.; Basu, Soumyadipta; Francoeur, Mathieu

doi:10.1016/j.photonics.2013.03.002

Cited by 24 publications

(11 citation statements)

References 51 publications

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“…Because of their unique plasmon dispersion, the hyperbolic plasmons can propagate in a certain direction with a large density of states and higher filed confinement, leading to applications of spontaneous radiation enhancement, hyperlens, negative index materials, and thermal management . Many of these have been realized in hyperbolic metasurfaces, created by artificial subwavelength structuring from visible to microwave frequency ranges .…”

Section: Plasmons In Anisotropic 2d Materialsmentioning

confidence: 99%

The Optical Properties and Plasmonics of Anisotropic 2D Materials

Wang

Zhang

Huang

et al. 2019

Advanced Optical Materials

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In the fast growing 2D materials family, anisotropic 2D materials, with their intrinsic in‐plane anisotropy, exhibit a great potential in optoelectronics. One such typical material is black phosphorus (BP), with a layer‐dependent and highly tunable bandgap. Such intrinsic anisotropy adds a new degree of freedom to the excitation, detection, and control of light. Particularly, hyperbolic plasmons with hyperbolic q‐space dispersion are predicted to exist in BP films, where highly directional propagating polaritons with divergent densities of states are hosted. Combined with a tunable electronic structure, such natural hyperbolic surfaces may enable a series of exotic applications in nanophotonics. Herein, the anisotropic optical properties and plasmons (especially hyperbolic plasmons) of BP are discussed. In addition, other possible 2D material candidates (especially anisotropic layered semimetals) for hyperbolic plasmons are examined. This review may stimulate further research interest in anisotropic 2D materials and fully unleash their potential in flatland photonics.

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Section: Plasmons In Anisotropic 2d Materialsmentioning

confidence: 99%

The Optical Properties and Plasmonics of Anisotropic 2D Materials

Wang

Zhang

Huang

et al. 2019

Advanced Optical Materials

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“…Near-field radiative heat transfer between a tip and a planar surface can be modeled by treating the tip as a randomly fluctuating electric dipole, p t . Based on fluctuational electrodynamics, the net spectral radiative heat transfer from the dipole at T t to a planar surface at T s or vice versa can be written as [23,24,37,38]…”

Section: Modelingmentioning

confidence: 99%

Finite dipole model for extreme near-field thermal radiation between a tip and planar SiC substrate

Jarzembski

Park

2017

Journal of Quantitative Spectroscopy and Radiative Transfer

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Recent experimental studies have measured the infrared (IR) spectrum of tip-scattered near-field thermal radiation for a SiC substrate and observed up to a 50 cm −1 redshift of the surface phonon polariton (SPhP) resonance peak [1, 2]. However, the observed spectral redshift cannot be explained by the conventional near-field thermal radiation model based on the point dipole approximation. In the present work, a heated tip is modeled as randomly fluctuating point charges (or fluctuating finite dipoles) aligned along the primary axis of a prolate spheroid, and quasistatic tip-substrate charge interactions are considered to formulate the effective polarizability and self-interaction Green's function. The finite dipole model (FDM), combined with fluctuational electrodynamics, allows the computation of tip-plane thermal radiation in the extreme near-field (i.e., H/R 1, where H is the tip-substrate gap distance and R is the tip radius), which cannot be calculated with the point dipole approximation. The FDM provides the underlying physics on the spectral redshift of tip-scattered near-field thermal radiation as observed in experiments. In addition, the SPhP peak in the near-field thermal radiation spectrum may split into two peaks as the gap distance decreases into the extreme near-field regime. This observation suggests that scatteringtype spectroscopic measurements may not convey the full spectral features of tip-plane extreme near-field thermal radiation.

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“…Here, a thermally-excited evanescent surface wave with a high associated local density of states is harvested by a PV diode across a sub-micron gap D; this additional coupling scales as D À3 [39]. In the near field regime of small D, thermal emission greatly exceeding the far-field blackbody limit can be achieved by exploiting surface plasmon polaritons, potentially augmented by metamaterials [40][41][42].…”

Section: Overview Of Tpv Mechanism and Historymentioning

confidence: 99%