Flatland Optics with Hyperbolic Metasurfaces

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

In this Perspective, we discuss the physics and potential applications of planar hyperbolic metasurfaces (MTSs), with emphasis on their in-plane and near-field responses. After revisiting the governing dispersion relation and properties of the supported surface plasmon polaritons (SPPs), we discuss the different topologies that uniaxial MTSs can implement. Particular attention is devoted to the hyperbolic regime, which exhibits unusual features, such as an ideally infinite wave confinement and local density of states. In this context, we clarify the different physical mechanisms that limit the practical implementation of these ideal concepts using materials found in nature, and we describe several approaches to realize hyperbolic MTSs, ranging from the use of novel 2D materials such as black phosphorus to artificial nanostructured composites made of graphene or silver. Some exciting phenomena and applications are then presented and discussed, including negative refraction and the routing of SPPs within the surface, planar hyperlensing, dramatic enhancement and tailoring of the local density of states, and broadband super-Planckian thermal emission. We conclude by outlining our vision for the future of uniaxial MTSs and their potential impact for the development of nanophotonics, on-chip networks, sensing, imaging, and communication systems.

Original languageEnglish (US)
Pages (from-to)2211-2224
Number of pages14
JournalACS Photonics
Volume3
Issue number12
DOIs
StatePublished - Dec 21 2016

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Surface Properties
Physics
Silver
Phosphorus
Optics
Hot Temperature
Communication
optics
polaritons
Nanophotonics
thermal emission
Refraction
Imaging systems
Graphene
phosphorus
telecommunication
refraction
near fields
Communication systems

Keywords

  • black phosphorus
  • graphene
  • hyperbolic materials
  • metasurfaces
  • plasmonics
  • uniaxial media

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Flatland Optics with Hyperbolic Metasurfaces. / Gomez Diaz, Juan Sebastian; Alù, Andrea.

In: ACS Photonics, Vol. 3, No. 12, 21.12.2016, p. 2211-2224.

Research output: Contribution to journalArticle

Gomez Diaz, Juan Sebastian ; Alù, Andrea. / Flatland Optics with Hyperbolic Metasurfaces. In: ACS Photonics. 2016 ; Vol. 3, No. 12. pp. 2211-2224.
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