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Your search keyword '"D'Aloia, A. G."' showing total 27 results
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27 results on '"D'Aloia, A. G."'

1. Analytical Modeling of Microwave Transmission Through Metasurfaces Made of Perforated Metal Plates, Arrays of Metal Patches, and Wire Grids

Author

D'Aloia, A. G., D'Amore, M., Cozzolino, F., Tamburrano, A., and Sarto, M. S.

Abstract

The availability of accurate analytical models for the prediction of microwave transmission through subwavelength metasurfaces is of particular interest in the design phase for performance optimization. To this purpose, this article proposes new analytical expressions of the effective admittance of both the inductive and capacitive screens. The effective capacitance of a periodic array of metal patches on a dielectric layer is obtained as a function of the effective inductance of the complementary surface made of a period array of square apertures on a metal plate. The effective inductance of a wire grid is given from the one of the equivalent mesh strip grid, performing the same transmission and reflection characteristics. The proposed formulations are applied to the prediction of the microwave transmission performances of the considered screen configurations. The obtained results are validated by comparison with the ones given by a full-wave numerical code and with data reported in the literature.

Published
2024
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8. Graphene-based Antibacterial Coatings for Dental Applications

Author

Bidsorkhi, Hossein C., Erika, Bruni, Ballam, LAVANYA RANI, D’Aloia, Alessandro G., Daniela, Uccelletti, Antonella, Polimeni, and Maria Sabrina Sarto

Subjects
clear aligners, dental, Graphene-based coatings, dental, clear aligners, Graphene-based coatings
Published
2021

15. Graphene-Based Nanocomposites with Tailored Electrical, Electromagnetic, and Electromechanical Properties

Author

Sarto, M. S., Giovanni De Bellis, Tamburrano, A., D Aloia, A. G., and Marra, F.

Subjects
Materials science, business.industry, Graphene, graphene nanoplatelets, and electromechanical properties, electrical, Optical coupling, law.invention, electrical, electromagnetic, and electromechanical properties, electromagnetic, law, Optoelectronics, business, Bilayer graphene, Graphene nanoribbons, Graphene oxide paper
Published
2016

23. Adaptive Broadband Radar Absorber Based on Tunable Graphene.

Author

D Aloia, A. G., D Amore, M., and Sarto, M. S.

Subjects
*ELECTRIC properties of graphene, *BROADBAND antennas, *BANDWIDTHS, *SPECTRAL sensitivity, *RADIO frequency
Abstract

An innovative broadband adaptive absorber, providing a reflection coefficient lower than -10\,dB in the frequency range from 7 to 22 GHz, is proposed. The new absorber is a two-period dielectric Salisbury, in which the outer lossy sheet is made of a graphene monolayer, and the inner one consists of a tunable graphene/dielectric laminate (GL). The two dielectric spacers are made of a commercial low-loss polymer. The total thickness is \sim 6\,mm. The adaptive broadband response of the absorber is achieved tuning the effective sheet resistance of the GL through an applied electrostatic field bias. The sensitivity analysis of the reflection coefficient of the absorber illuminated by a plane wave with normal incidence is carried out with respect to the spacer thickness and the graphene carrier charge mobility. By applying a dc-voltage source always below 15 V, the minimum reflection coefficient of the adaptive absorber is centered around 14 GHz, and it is characterized by a bandwidth at -10\,dB of \sim 15\,GHz. [ABSTRACT FROM PUBLISHER]

Published
2016
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