Silvia Romano

TL;DR: In this paper, an efficient optical sensor based on a photonic crystal metasurface supporting bound states in the continuum is reported, which exploits a normal-to-the-surface optical launching scheme, with excellent interrogation stability and demonstrates alignment-free performances.

TL;DR: A novel optical label-free bio-sensing platform based on a new class of resonances supported in a photonic crystal metasurface that provides an excellent interrogation stability and loss-free operation, requires minimal optical interrogation equipment and can be easily optimized to work in a wide wavelength range.

TL;DR: In this paper, the possibility of managing surface electromagnetic states mimicking surface-plasmon resonances in terms of spatial localization, high-field intensity, and dispersion characteristics, while avoiding metallic losses is of great interest.

TL;DR: The differential sensitivity and the figure of merit of a sensor operating in the spectral vicinity of a BIC are derived and an analytic formula for the maximal sensitivity with an optical BIC is derived.

TL;DR: The evanescent field sensing mechanism provided by an all-dielectric metasurface supporting bound states in the continuum (BICs) is investigated, with an experimental exponential sensitivity leading to differential values as large as 226 nm/RIU with excellent FOM.