Articolo in rivista, 2023, ENG, 10.3390/nano13020240

Frenkel-Poole Mechanism Unveils Black Diamond as Quasi-Epsilon-Near-Zero Surface

Andrea Orsini , Daniele Barettin , Sara Pettinato, Stefano Salvatori , Riccardo Polini, Maria Cristina Rossi, Alessandro Bellucci, Eleonora Bolli, Marco Girolami, Matteo Mastellone, Stefano Orlando, Valerio Serpente, Veronica Valentini, Daniele Maria Trucchi

1 Università degli Studi Niccolò Cusano, "ATHENA" European University, via don Carlo Gnocchi, 3, 00166 Roma, Italy 2 Istituto di Struttura della Materia, ISM-CNR, 00015 Monterotondo Stazione, Italy 3 Department of Chemical Science and Technologies, Università degli Studi di Roma Due "Tor Vergata", Via della Ricerca Scientifica, 00133 Rome, Italy 4 Department of Electronic Engineering, Università degli Studi di Roma Tre, Via Vito Volterra 62--Ex Vasca Navale, 00154 Roma, Italy

A recent innovation in diamond technology has been the development of the "black diamond" (BD), a material with very high optical absorption generated by processing the diamond surface with a femtosecond laser. In this work, we investigate the optical behavior of the BD samples to prove a near to zero dielectric permittivity in the high electric field condition, where the Frenkel-Poole (FP) effect takes place. Zero-epsilon materials (ENZ), which represent a singularity in optical materials, are expected to lead to remarkable developments in the fields of integrated photonic devices and optical interconnections. Such a result opens the route to the development of BD-based, novel, functional photonic devices.

Nanomaterials (Basel) 13 (2), pp. 240–?

Keywords

diamond, LIPSS, Frenkel-Poole effect, ENZ

CNR authors

Polini Riccardo, Mastellone Matteo, Serpente Valerio, Salvatori Stefano, Pettinato Sara, Bolli Eleonora, Orlando Stefano, Trucchi Daniele Maria, Valentini Veronica, Girolami Marco, Bellucci Alessandro

CNR institutes

ISM – Istituto di struttura della materia