Journal ArticleDOI
Multi-bit graphene-based bias-encoded metasurfaces for real-time terahertz wavefront shaping: From controllable orbital angular momentum generation toward arbitrary beam tailoring
TLDR
In this article, a new generation of multi-bit graphene-based bias-encoded metasurfaces (MGBMs) is proposed for real-time reflected wavefront manipulation at terahertz (THz) frequencies.About:
This article is published in Carbon.The article was published on 2019-08-01. It has received 87 citations till now. The article focuses on the topics: Wavefront.read more
Citations
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Journal ArticleDOI
Toward Intelligent Metasurfaces: The Progress from Globally Tunable Metasurfaces to Software-Defined Metasurfaces with an Embedded Network of Controllers
Odysseas Tsilipakos,Anna C. Tasolamprou,Alexandros Pitilakis,Fu Liu,Xuchen Wang,Mohammad Sajjad Mirmoosa,Dimitrios C. Tzarouchis,Dimitrios C. Tzarouchis,Sergi Abadal,Hamidreza Taghvaee,Christos Liaskos,Ageliki Tsioliaridou,Julius Georgiou,Albert Cabellos-Aparicio,Eduard Alarcon,Sotiris Ioannidis,Sotiris Ioannidis,Andreas Pitsillides,Ian F. Akyildiz,Nikolaos V. Kantartzis,Eleftherios N. Economou,Eleftherios N. Economou,Costas M. Soukoulis,Costas M. Soukoulis,Maria Kafesaki,Maria Kafesaki,Sergei A. Tretyakov +26 more
TL;DR: A new research direction of software‐defined metAsurfaces is described, which attempts to push metasurfaces toward unprecedented levels of functionality by harnessing the opportunities offered by their software interface as well as their inter‐ and intranetwork connectivity and establish them in real‐world applications.
Journal ArticleDOI
Programmable Metamaterials for Software-Defined Electromagnetic Control: Circuits, Systems, and Architectures
TL;DR: The main aim is to present the current status, main benefits, and key challenges of this thriving research area with a tutorial spirit and from a hardware perspective.
Journal ArticleDOI
Generalized Optical Signal Processing Based on Multi-Operator Metasurfaces Synthesized by Susceptibility Tensors
TL;DR: In this article, the authors proposed a multichannel functional metasurface computer characterized by Generalized Sheet Transition Conditions (GSTCs) and surface susceptibility tensors, enabling multiple and independent parallel analog spatial computations when illuminated by differently polarized incident beams from different directions.
Journal ArticleDOI
Ultrafast reprogrammable multifunctional vanadium-dioxide-assisted metasurface for dynamic THz wavefront engineering.
TL;DR: In this article, a new generation of ultrafast reprogrammable multi-mission bias encoded metasurface is proposed for dynamic terahertz wavefront engineering by employing VO2 reversible and fast monoclinic to tetragonal phase transition.
Journal ArticleDOI
Generalized Optical Signal Processing Based on Multioperator Metasurfaces Synthesized by Susceptibility Tensors
TL;DR: It is demonstrated that a metasurface featuring non-reciprocal property can be thought of as a new paradigm to break the even symmetry of reflection and perform both even- and odd-symmetry mathematical operations at normal incidences.
References
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Surface plasmon subwavelength optics
TL;DR: By altering the structure of a metal's surface, the properties of surface plasmons—in particular their interaction with light—can be tailored, which could lead to miniaturized photonic circuits with length scales that are much smaller than those currently achieved.
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Orbital angular momentum of light and the transformation of Laguerre-Gaussian laser modes.
TL;DR: Laser light with a Laguerre-Gaussian amplitude distribution is found to have a well-defined orbital angular momentum and an astigmatic optical system may be used to transform a high-order LaguERre- Gaussian mode into aHigh-order Hermite-Gaussia mode reversibly.
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Light Propagation with Phase Discontinuities: Generalized Laws of Reflection and Refraction
Nanfang Yu,Patrice Genevet,Patrice Genevet,Mikhail A. Kats,Francesco Aieta,Francesco Aieta,Jean-Philippe Tetienne,Jean-Philippe Tetienne,Federico Capasso,Zeno Gaburro,Zeno Gaburro +10 more
TL;DR: In this article, a two-dimensional array of optical resonators with spatially varying phase response and subwavelength separation can imprint phase discontinuities on propagating light as it traverses the interface between two media.
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Dyadic Green's functions and guided surface waves for a surface conductivity model of graphene
TL;DR: In this paper, an exact solution for the electromagnetic field due to an electric current in the presence of a surface conductivity model of graphene is obtained in terms of dyadic Green's functions represented as Sommerfeld integrals.
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Coding metamaterials, digital metamaterials and programmable metamaterials
TL;DR: Digital metamaterials consisting of two kinds of unit cells whose different phase responses allow them to act as ‘0’ and ‘1’ bits are developed to enable controlled manipulation of electromagnetic waves.