Andrea Alù
City University of New York
1276 Papers
5.1K Citations
Andrea Alù is an academic researcher from City University of New York. The author has contributed to research in topics: Metamaterial & Cloaking. The author has an hindex of 109, co-authored 1138 publications. Previous affiliations of Andrea Alù include Fundamental Research on Matter Institute for Atomic and Molecular Physics & University of Texas System.
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Papers
Spatio-Temporally Modulated Metamaterials
Andrea Alù
- 01 Aug 2021
TL;DR: In this paper, the authors discuss the opportunities and potentials of metamaterials in which their constituent elements are modulated in space and time with tailored patterns, or abruptly change in space-time, in order to overcome the constraints of passive, linear, time-invariant materials.
Ultrathin nonlinear metasurfaces
Mykhailo Tymchenko,Nishant Nookala,J. Sebastian Gomez-Diaz,Mikhail A. Belkin,Andrea Alù,Jongwon Lee +5 more
- 05 Jul 2016
TL;DR: This work presents a novel class of ultrathin metasurfaces operating in a nonlinear regime, simultaneously providing generation efficiencies that are many orders of magnitude larger than in other nonlinear setups, and, at the same time, capable of controlling the local phase of the nonlinear signal with high precision and subwavelength resolution.
Dielectric metasurfaces performing all-analog computing
Andrea Cordaro,Hoyeong Kwon,Dimitrios L. Sounas,Femius Koenderink,Albert Polman,Andrea Alù +5 more
- 05 May 2019
TL;DR: Designs for 1st and 2nd order spatial differentiation enabling low power and real-time edge detection on metasurfaces capable of performing analog image processing are shown.
Structuring the Reflected Beams by a Single Metasurface by Exploiting Composite Vortex Properties
Mirko Barbuto,A. Bassotti,Andrea Alù,Filiberto Bilotti,A. Toscano +4 more
- 20 Sep 2021
TL;DR: In this article, the authors discuss the possibility of exploiting the theory of composite vortices for manipulating the reflected beam by a single reflective metasurface and show that its scattering pattern can be tilted according to the amplitude ratio between the two components.
Tailoring optical reflections through lattices of high-index dielectric nanoparticles
Alessio Monti,Andrea Alù,A. Toscano,Filiberto Bilotti +3 more
- 01 Aug 2018
TL;DR: In this article, the use of arrays of dielectric nanoparticles for tailoring optical reflections is investigated, and two different categories of devices are considered: (i) ultra-thin all-reflection coatings and (ii) highly efficient non-gradient anomalous reflectors.