Search Results - "Alù, A"

Twisted optical metamaterials for planarized ultrathin broadband circular polarizers by Zhao, Y., Belkin, M.A., Alù, A.

“…Optical metamaterials are usually based on planarized, complex-shaped, resonant nano-inclusions. Three-dimensional geometries may provide a wider set of…”
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Temporal multilayer structures for designing higher-order transfer functions using time-varying metamaterials by Ramaccia, D., Alù, A., Toscano, A., Bilotti, F.

“…Temporal metamaterials are artificial materials whose electromagnetic properties change over time. In analogy with spatial media and metamaterials, where their…”
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Topological phonon-polariton funneling in midinfrared metasurfaces by Guddala, S, Komissarenko, F, Kiriushechkina, S, Vakulenko, A, Li, M, Menon, V M, Alù, A, Khanikaev, A B

“…Topological photonics offers enhanced control over electromagnetic fields by providing a platform for robust trapping and guiding of topological states of…”
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Experimental verification of three-dimensional plasmonic cloaking in free-space by Rainwater, D, Kerkhoff, A, Melin, K, Soric, J C, Moreno, G, Alù, A

“…We report the experimental verification of metamaterial cloaking for a 3D object in free space. We apply the plasmonic cloaking technique, based on scattering…”
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Nonlocal response of hyperbolic metasurfaces by Correas-Serrano, D, Gomez-Diaz, J S, Tymchenko, M, Alù, A

“…We analyze and model the nonlocal response of ultrathin hyperbolic metasurfaces (HMTSs) by applying an effective medium approach. We show that the intrinsic…”
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Demonstration of an ultralow profile cloak for scattering suppression of a finite-length rod in free space by Soric, J C, Chen, P Y, Kerkhoff, A, Rainwater, D, Melin, K, Alù, A

“…We present the first experimental realization and verification of a three-dimensional stand-alone mantle cloak designed to suppress the total scattering of a…”
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Scattering suppression and wideband tunability of a flexible mantle cloak for finite-length conducting rods by Schofield, R S, Soric, J C, Rainwater, D, Kerkhoff, A, Alù, A

“…A simple, thin, flexible mantle cloak for conducting rods based on scattering cancellation is analyzed, designed and experimentally realized. We show strong…”
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Coherent virtual absorption of elastodynamic waves by Trainiti, G, Ra'di, Y, Ruzzene, M, Alù, A

“…Absorbers suppress reflection and scattering of an incident wave by dissipating its energy into heat. As material absorption goes to zero, the energy impinging…”
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Broadband metamaterial for nonresonant matching of acoustic waves by D’Aguanno, G., Le, K. Q., Trimm, R., Alù, A., Mattiucci, N., Mathias, A. D., Aközbek, N., Bloemer, M. J.

“…Unity transmittance at an interface between bulk media is quite common for polarized electromagnetic waves incident at the Brewster angle, but it is rarely…”
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Thermal invisibility based on scattering cancellation and mantle cloaking by Farhat, M., Chen, P.-Y., Bagci, H., Amra, C., Guenneau, S., Alù, A.

“…We theoretically and numerically analyze thermal invisibility based on the concept of scattering cancellation and mantle cloaking. We show that a small object…”
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Layered plasmonic cloaks to tailor the optical scattering at the nanoscale by Monticone, F., Argyropoulos, C., Alù, A.

“…We discuss the rich scattering features offered by thin and thick plasmonic layers covering dielectric nanoparticles and their potential optical applications…”
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Immunity to Backscattering of Bulk Waves in Topological Acoustic Superlattices by Deymier, P. A., Vasseur, Jérome O., Runge, K., Khanikaev, A., Alù, A.

“…We herein investigate the scattering of orthogonal counterpropagating waves and one-way propagating bulk waves in discrete acoustic superlattices subjected to…”
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Experimental demonstration of plasmonic Brewster angle extraordinary transmission through extreme subwavelength slit arrays in the microwave by Aközbek, N., Mattiucci, N., de Ceglia, D., Trimm, R., Alù, A., D’Aguanno, G., Vincenti, M. A., Scalora, M., Bloemer, M. J.

“…We experimentally demonstrate the existence of a Brewster-like broadband extraordinary optical transmission band, in a very thick metal plate with an array of…”
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Terahertz carpet cloak based on a ring resonator metasurface by Orazbayev, B., Mohammadi Estakhri, N., Beruete, M., Alù, A.

“…In this work we present the concept and design of an ultrathin ([lambda]/22) terahertz (THz) unidirectional carpet cloak based on the local phase compensation…”
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Experimental Demonstration of Negative-Index Propagation in a Rectangular Waveguide Loaded With Complementary Split-Ring Resonators by Estep, N. A., Askarpour, A. N., Alu, A.

“…In a recent paper, we studied a metamaterial consisting of stacked metal plates loaded by embedded complementary split-ring resonators (C-SRRs), ideal to…”
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Quenched optical transmission in ultrathin subwavelength plasmonic gratings by D’Aguanno, G., Mattiucci, N., Alù, A., Bloemer, M. J.

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Frozen light in a near-zero index metasurface by D’Aguanno, G., Mattiucci, N., Bloemer, M. J., Trimm, R., Aközbek, N., Alù, A.

“…We discuss the nature of leaky modes with large phase velocity and an effective refractive index and group velocity near zero in planar arrays of subwavelength…”
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Acoustic Supercoupling in a Zero-Compressibility Waveguide by Esfahlani, H, Byrne, M S, McDermott, M, Alù, A

“…Funneling acoustic waves through largely mismatched channels is of fundamental importance to tailor and transmit sound for a variety of applications. In…”
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Cloaking through cancellation of diffusive wave scattering by Farhat, M., Chen, P. Y., Guenneau, S., Bağcı, H., Salama, K. N., Alù, A.

“…A new cloaking mechanism, which makes enclosed objects invisible to diffusive photon density waves, is proposed. First, diffusive scattering from a basic…”
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Taming the thermal emissivity of metals: A metamaterial approach by Mattiucci, N., D'Aguanno, G., Alù, A., Argyropoulos, C., Foreman, J. V., Bloemer, M. J.

“…We demonstrate the possibility of realizing temporally coherent, wide-angle, thermal radiation sources based on the metamaterial properties of metallic…”
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