About this Research Topic
Optical metamaterials, artificial materials composed of subwavelength unit cells, provide a powerful platform for manipulating light. As an important class of artificial anisotropic metamaterial with hyperbolic iso-frequency contours (IFCs), hyperbolic metamaterials (HMMs) have recently attracted significant attention due to their unique ability to control interactions between light and matter. Changing the topological transition of the dispersion from a closed IFC to an open hyperbolic dispersion significantly enhances the optical density of states. This has important consequences for the strong enhancement of spontaneous emission. In addition, HMMs can convert evanescent waves into propagating waves with large wave vectors. This property has enabled the demonstration of super-resolution imaging that overcomes the diffraction limit, sub-wavelength optical cavities, high sensitivity sensor, and long-range dipole-dipole interactions beyond the near-field coupling limitation.
HMMs have unprecedented capabilities to manipulate electromagnetic waves and many potential applications. Thus far, miniaturization, planarization, and low loss are the main pursuit of HMMs. Hyperbolic metasurface has a planar structure that is easier to integrate and has a smaller loss. Especially, low-loss HMS with phonon-polaritons in natural 2D materials greatly promotes the development of plane electromagnetic wave control. Very recently, with the development of twist-optics, interlayer rotation of 2D materials/metasurfaces provides a new way to study the topological phase transition of dispersion. In addition, tuning the topology of dispersion in an active manner has gained the significant interest of late because of its usefulness in the design of new active devices.
We invite the submission of Original Research, Review, Mini Review, Perspective articles on themes including, but not limited to:
• Tunable and reconfigurable hyperbolic metamaterials
• Hyperbolic behavior of phonon-polaritons in layered two-dimensional materials
• Twist-optics in Moire structure with hyperbolic dispersion
• Hyperbolic metasurfaces and hyper-crystals
• Hyperbolic topological transition of dispersion
• Hyperbolic meta-cavities and meta-waveguides
• Nanofabrication aspect of optical hyperbolic metamaterials
• Topological properties of metamaterials and twist-optics
HMMs have unprecedented capabilities to manipulate electromagnetic waves and many potential applications. Thus far, miniaturization, planarization, and low loss are the main pursuit of HMMs. Hyperbolic metasurface has a planar structure that is easier to integrate and has a smaller loss. Especially, low-loss HMS with phonon-polaritons in natural 2D materials greatly promotes the development of plane electromagnetic wave control. Very recently, with the development of twist-optics, interlayer rotation of 2D materials/metasurfaces provides a new way to study the topological phase transition of dispersion. In addition, tuning the topology of dispersion in an active manner has gained the significant interest of late because of its usefulness in the design of new active devices.
We invite the submission of Original Research, Review, Mini Review, Perspective articles on themes including, but not limited to:
• Tunable and reconfigurable hyperbolic metamaterials
• Hyperbolic behavior of phonon-polaritons in layered two-dimensional materials
• Twist-optics in Moire structure with hyperbolic dispersion
• Hyperbolic metasurfaces and hyper-crystals
• Hyperbolic topological transition of dispersion
• Hyperbolic meta-cavities and meta-waveguides
• Nanofabrication aspect of optical hyperbolic metamaterials
• Topological properties of metamaterials and twist-optics
Keywords: Hyperbolic metamaterials, Hyperbolic metasurfaces, Topological transition, High-k modes, Applications
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