Label-free sensing of ultralow-weight molecules with all-dielectric metasurfaces supporting bound states in the continuum

S Romano, G Zito, S Torino, G Calafiore… - Photonics …, 2018 - opg.optica.org
The realization of an efficient optical sensor based on a photonic crystal metasurface
supporting bound states in the continuum is reported. Liquids with different refractive …

Frontiers of light manipulation in natural, metallic, and dielectric nanostructures

E De Tommasi, E Esposito, S Romano… - La Rivista del Nuovo …, 2021 - Springer
The ability to control light at the nanoscale is at the basis of contemporary photonics and
plasmonics. In particular, properly engineered periodic nanostructures not only allow the …

Tuning the exponential sensitivity of a bound-state-in-continuum optical sensor

S Romano, G Zito, SN Lara Yépez, S Cabrini… - Optics express, 2019 - opg.optica.org
In this work, we investigate the evanescent field sensing mechanism provided by an all-
dielectric metasurface supporting bound states in the continuum (BICs). The metasurface is …

Optical biosensors based on photonic crystals supporting bound states in the continuum

S Romano, A Lamberti, M Masullo, E Penzo, S Cabrini… - Materials, 2018 - mdpi.com
A novel optical label-free bio-sensing platform based on a new class of resonances
supported in a photonic crystal metasurface is reported herein. Molecular binding is …

Guided resonance in negative index photonic crystals: a new approach

S Romano, S Cabrini, I Rendina… - Light: Science & …, 2014 - nature.com
The behavior of a negative refraction photonic crystal slab irradiated with out-of-plane
incident beam is an unexplored subject. In such an experimental configuration, guided …

Optical sensors based on photonic crystal: a new route

S Romano, S Torino, G Coppola, S Cabrini… - Optical Sensors …, 2017 - spiedigitallibrary.org
The realization of miniaturized devices able to accumulate a higher number of information in
a smallest volume is a challenge of the technological development. This trend increases the …

Electromagnetic bandgap formation in two-dimensional photonic crystal structure with DNG materials under TE mode

P Chakraborty, R Ghosh, A Adhikary… - 2019 Devices for …, 2019 - ieeexplore.ieee.org
Bandgap width within first Brillouin zone in metamaterial-based two-dimensional photonic
crystal structure is analytically computed using plane wave expansion method. A wider …

Temperature dependence of band gap ratio and Q-factor defect mode in a semiconductor quaternary alloy hexagonal photonic-crystal hole slab

R Sánchez-Cano, N Porras-Montenegro - Applied Physics A, 2016 - Springer
We present numerical predictions for the photonic TE-like band gap ratio and the quality
factors of symmetric localized defect as a function of the thickness slab and temperature by …

Enhancing light-matter interaction in all-dielectric photonic crystal metasurfaces

S Romano, G Zito, E Penzo, SNL Yépez… - Optical Sensors …, 2019 - spiedigitallibrary.org
The localization of the electromagnetic field at the nanoscale can play a key role in many
applications, such as sensing, spectroscopy and energy conversion. In the last years, great …

Bound-state in the continuum of a photonic crystal metasurface: a platform for ultrasensitive sensing and near field amplification

S Romano, G Zito, SNL Yépez, E Penzo… - Journal of Physics …, 2020 - iopscience.iop.org
The localization of the electromagnetic field at the nanoscale can play a key role in many
applications, such as sensing, spectroscopy and energy conversion. In the last years, great …