Reconfigurable THz Fixed-Frequency Beamscanning Through a Liquid-Crystal-Loaded Leaky Waveguide Operating in Its Fundamental TE Mode

Autor: Walter Fuscaldo, Elahehsadat Torabi, Dimitrios C. Zografopoulos, Danilo Erricolo, Romeo Beccherelli

Publikováno v: IEEE Access, Vol 11, Pp 91831-91841 (2023)

A rectangular metallic leaky waveguide loaded with liquid crystals (LC) and operating in its fundamental TE mode at 1 THz is proposed to mitigate the well-known trade-off between directivity and tunable angular range of dynamic beamscanning antennas.

Externí odkaz: https://doaj.org/article/74edf2292cef446ba0584f2940dcbe2e

Analysis and Design of Tunable THz 1-D Leaky-Wave Antennas Based on Nematic Liquid Crystals

Autor: Walter Fuscaldo, Dimitrios C. Zografopoulos, Francesca Imperato, Paolo Burghignoli, Romeo Beccherelli, Alessandro Galli

Publikováno v: Applied Sciences, Vol 12, Iss 22, p 11770 (2022)

The tunable properties of nematic liquid crystals (NLC) are here exploited in a peculiar leaky waveguide with artificial magnetic conductors as the lateral walls, a bottom metal ground plane, and a homogenized metasurface on top to obtain dynamic bea

Externí odkaz: https://doaj.org/article/1ecfda60ecbe4aecb07565af6f6e98db

Study of Microplastics and Inorganic Contaminants in Mussels from the Montenegrin Coast, Adriatic Sea

Autor: Sara De Simone, Ana Perošević-Bajčeta, Danijela Joksimović, Romeo Beccherelli, Dimitrios C. Zografopoulos, Valentina Mussi

Publikováno v: Journal of Marine Science and Engineering, Vol 9, Iss 5, p 544 (2021)

Mussels (Mytilus galloprovincialis) collected at three locations in Boka Kotorska Bay, on the Montenegrin Adriatic coast, were analyzed for the first time by optical and Raman microscopy to detect microplastics (MPs) and other emerging contaminants i

Externí odkaz: https://doaj.org/article/d4d7b7b820604354bef0585e1b09f7e9

Anapole Modes in Hollow Nanocuboid Dielectric Metasurfaces for Refractometric Sensing

Autor: José Francisco Algorri, Dimitrios C. Zografopoulos, Antonio Ferraro, Braulio García-Cámara, Ricardo Vergaz, Romeo Beccherelli, José Manuel Sánchez-Pena

Publikováno v: Nanomaterials, Vol 9, Iss 1, p 30 (2018)

This work proposes the use of the refractive index sensitivity of non-radiating anapole modes of high-refractive-index nanoparticles arranged in planar metasurfaces as a novel sensing principle. The spectral position of anapole modes excited in hollo

Externí odkaz: https://doaj.org/article/7d34fe49e5cc459eb394accb5bd4a8ef

Metasurface-based Filters for High Data Rate THz Wireless Communications: Experimental Validation of a 14 Gbps OOK and 104 Gbps QAM-16 Wireless Link in the 300 GHz band

Autor: Daniele Pirrone, Antonio Ferraro, Dimitrios C. Zografopoulos, Walter Fuscaldo, Pascal Szriftgiser, Guillaume Ducournau, Romeo Beccherelli

Publikováno v: IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications, 2022, 21 (10), pp.8688-8697. ⟨10.1109/TWC.2022.3168399⟩

International audience; We demonstrate the effectiveness of frequency selective surface filters in wireless communications at low terahertz (THz) frequencies. Full-wave simulations of pass-band filters designed at 270 GHz and 330 GHz are compared wit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ee708d303f9421f3e5bc6211f8e45ba
https://hal.science/hal-03666533