@article{10902/28911,
year = {2019},
month = {1},
url = {https://hdl.handle.net/10902/28911},
abstract = {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 hollow silicon nanocuboids is first investigated as a function of the nanocuboid geometry. Then, nanostructured metasurfaces of periodic arrays of nanocuboids on a glass substrate are designed. The metasurface parameters are properly selected such that a resonance with ultrahigh Q-factor, above one million, is excited at the target infrared wavelength of 1.55µm. The anapole-induced resonant wavelength depends on the refractive index of the analyte superstratum, exhibiting a sensitivity of up to 180 nm/RIU. Such values, combined with the ultrahigh Q-factor, allow for refractometric sensing with very low detection limits in a broad range of refractive indices. Besides the sensing applications, the proposed device can also open new venues in other research fields, such as non-linear optics, optical switches, and optical communications.},
organization = {This work was supported by the Research and Development Program through the Comunidad de Madrid
(SINFOTON S2013/MIT-2790), the Ministerio de Economía y Competitividad of Spain (TEC2013-47342-C2-2-R) and
the funding from Agencia Estatal de Investigación (AEI) and Fondo Europeo de Desarrollo Regional (FEDER) for the
Project TEC2016-77242-C3-1-R AEI/FEDER,UE.},
publisher = {MDPI},
publisher = {Nanomaterials,  2019, 9(1), 30},
title = {Anapole modes in hollow nanocuboid dielectric metasurfaces for refractometric sensing},
author = {Algorri Genaro, José Francisco and Zografopoulos, Dimitrios C. and Ferraro, Antonio and García Cámara, Braulio and Vergaz Benito, Ricardo and Beccherelli, Romeo and Sánchez Pena, José Manuel},
}