Near-Field Thermal Radiation between Metasurfaces

Liu, Xianglei; Zhang, Zhuomin

doi:10.1021/acsphotonics.5b00298

Cited by 103 publications

(50 citation statements)

References 67 publications

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“…[ 167 ] Beside the spatial gradient, a transverse temporal gradient can also be taken into account to break the reciprocity symmetry, which shows important application in nonreciprocal devices, such as optical diode. [ 168 ] More comprehensively, such concept of wave control has been applied to diverse disciplines for wave-matter interactions, such as acoustics, [ 169,170 ] thermal physics, [ 171,172 ] etc.…”

Section: Other Applicationsmentioning

confidence: 99%

Advances in Full Control of Electromagnetic Waves with Metasurfaces

Zhang

Mei

Huang

et al. 2016

Advanced Optical Materials

357

199

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Metasurfaces, two‐dimensional versions of metamaterials, retain the great capabilities of three‐dimensional counterparts in manipulating electromagnetic wave behaviors, while reducing the challenges in fabrication. By judiciously engineering parameters of individual building blocks (such as geometry, size, and material) and selecting specific design algorithms, metasurfaces are promising to replace conventional electromagnetic elements in nanoplasmonic/photonic devices. Significantly, such concept can be readily promoted to other disciplines, such as acoustics, thermal physics, and seismology. In this article, the latest advances in full control of electromagnetic waves with metasurfaces are briefly reviewed from a functionality perspective. A broad avenue towards real‐life applications of metamaterials has been opened up, although they are still at their infant stage. At the end, several promising approaches are suggested to extend the applications of metasurfaces.

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Section: Other Applicationsmentioning

confidence: 99%

Advances in Full Control of Electromagnetic Waves with Metasurfaces

Zhang

Mei

Huang

et al. 2016

Advanced Optical Materials

357

199

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“…1) can be used to boost NFRHT. Making use of a rigorous coupled wave analysis, we demonstrate that one can design Si metasurfaces that not only exhibit a roomtemperature NFRHT much larger than that of bulk Si or other proposed periodic structures [37,39,40], but they also outperform the best unstructured polar dielectric (SiO 2 ). By appropriately choosing the geometrical parameters of the metasurfaces, the enhancement over polar dielectrics occurs over a broad range of separations (from 13 nm to 2 µm).…”

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confidence: 99%

Enhancing Near-Field Radiative Heat Transfer with Si-based Metasurfaces

et al. 2017

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We demonstrate in this work that the use of metasurfaces provides a viable strategy to largely tune and enhance near-field radiative heat transfer between extended structures. In particular, using a rigorous coupled wave analysis, we predict that Si-based metasurfaces featuring two-dimensional periodic arrays of holes can exhibit a room-temperature near-field radiative heat conductance much larger than any unstructured material to date. We show that this enhancement, which takes place in a broad range of separations, relies on the possibility to largely tune the properties of the surface plasmon polaritons that dominate the radiative heat transfer in the near-field regime. DOI: 10.1103/PhysRevLett.118.203901 Thermal radiation is one of the most ubiquitous physical phenomena. In recent years, there has been a renewed interest in this topic due to the confirmation of the prediction that radiative heat transfer can be drastically enhanced for bodies separated by small gaps [1,2]. This occurs when the gap is smaller than the thermal wavelength (9.6 μm at room temperature), and it is due to the contribution of evanescent waves that dominate the near-field regime. The fact that this near-field radiative heat transfer (NFRHT) can overcome the far-field limit set by the Stefan-Boltzmann law has now been verified in a variety of experiments exploring different materials, geometrical shapes, and gaps ranging from micrometers to a few nanometers [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. These experiments have also triggered off the hope that NFRHT could have an impact in different thermal technologies [18] such as thermophotovoltaics [19], heat-assisted magnetic recording [20,21], scanning thermal microscopy [22][23][24], nanolithography [25], thermal management [26,27], or coherent thermal sources [28,29].In this context, the question on the fundamental limits of NFRHT is attracting a lot of attention [30]. So far, the largest NFRHT enhancements in extended structures have been reported for polar dielectrics (SiC, SiO 2 , SiN, etc.), in which the NFRHT is dominated by surface phonon polaritons (SPhPs) [31,32]. There has not been any report of an extended structure that has a heat transfer coefficient exceeding that between two planar polar dielectric surfaces, and that includes metamaterials like hyperbolic ones [33,34]. In an attempt to tune NFRHT, several calculations of NFRHT between periodic metallic nanostructures in both 1D [35][36][37][38] and 2D [39] have been reported. These calculations have shown some degree of tunability and a NFRHT enhancement over the corresponding material without nanostructuration. However, the reported NFRHT in these structures is still smaller than in the case of parallel plates made of polar dielectrics. There have also been theoretical studies of the NFRHT between photonic crystals and periodic metamaterials made of dielectrics [40][41][42] that show how the radiative properties can be enhanced with respect to the bulk counterpart. However, the resulting NFRHTs are agai...

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“…The default temperature T is set to be 300 K, and the temperature dependence will be discussed later. Matrix n M can be described by reflection coefficients 1 R and 2 R at Matsubara frequencies [28], which consider all possible polarization states and are obtained by using the rigorous coupled-wave analysis (RCWA) for specified x k and y k values [28,[56][57][58][59]. The integration range of x k is from -π/P to π/P rather than from −∞ to ∞ because all the modes are folded into the first Brillouin zone due to the periodicity in the x direction.…”

Section: Nanostructuresmentioning

confidence: 99%

Tunable Stable Levitation Based on Casimir Interaction between Nanostructures

Liu

Zhang

2016

Phys. Rev. Applied

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Quantum levitation enabled by repulsive Casimir force has been a desire due to the potential exciting applications in passive-suspension devices and frictionless bearings. In this paper, dynamically tunable stable levitation is theoretically demonstrated based on the configuration of dissimilar gratings separated by an intervening fluid using exact scattering theory. The levitation position is insensitive to temperature variations and can be actively tuned by adjusting the lateral displacement between the two gratings. This work paves a way toward applying quantum Casimir interactions into macroscopic mechanical devices working in a noncontact and low-friction environment for controlling the position or transducing lateral movement into vertical displacement at the nanoscale., where d is the gap spacing, h is reduced Planck constant, c is the speed of light in vacuum [1]. Its magnitude increases quickly with decreasing gap spacing, and the corresponding pressure exerted is even larger than atmospheric pressure at d = 10 nm.This nontrivial long-range interaction will cause the malfunctioning of microelectromechanical systems (MEMS) and nanoelectromechanical systems (NEMS) due to the induced stiction and friction problems. As a result, it may impede on Moore's law, which says that the packing density of transistors doubles approximately every two years.The desire of overcoming the Casimir stiction has been one of the major driving forces for realizing repulsive force. Magnetic materials were introduced to achieve the Casimir

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Near-Field Thermal Radiation between Metasurfaces

Cited by 103 publications

References 67 publications

Advances in Full Control of Electromagnetic Waves with Metasurfaces

Advances in Full Control of Electromagnetic Waves with Metasurfaces

Enhancing Near-Field Radiative Heat Transfer with Si-based Metasurfaces

Tunable Stable Levitation Based on Casimir Interaction between Nanostructures

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