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Article

Non-Absorbing Dielectric Materials for Surface-Enhanced Spectroscopies and Chiral Sensing in the UV

1
Department of Applied Physics, University of Cantabria, Avda. Los Castros, s/n., 39005 Santander, Spain
2
Institute of Nanotechnology, CNR-NANOTEC, Via Orabona 4, 70126 Bari, Italy
*
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(10), 2078; https://doi.org/10.3390/nano10102078
Received: 11 September 2020 / Revised: 10 October 2020 / Accepted: 15 October 2020 / Published: 21 October 2020
(This article belongs to the Special Issue Plasmonics and Nano-Optics from UV to THz: Materials and Applications)
Low-loss dielectric nanomaterials are being extensively studied as novel platforms for enhanced light-matter interactions. Dielectric materials are more versatile than metals when nanostructured as they are able to generate simultaneously electric- and magnetic-type resonances. This unique property gives rise to a wide gamut of new phenomena not observed in metal nanostructures such as directional scattering conditions or enhanced optical chirality density. Traditionally studied dielectrics such as Si, Ge or GaP have an operating range constrained to the infrared and/or the visible range. Tuning their resonances up to the UV, where many biological samples of interest exhibit their absorption bands, is not possible due to their increased optical losses via heat generation. Herein, we report a quantitative survey on the UV optical performance of 20 different dielectric nanostructured materials for UV surface light-matter interaction based applications. The near-field intensity and optical chirality density averaged over the surface of the nanoparticles together with the heat generation are studied as figures of merit for this comparative analysis. View Full-Text
Keywords: dielectric nanoparticles; chirality; chiral molecules; surface-enhanced spectroscopies; Mie resonances; UV dielectric nanoparticles; chirality; chiral molecules; surface-enhanced spectroscopies; Mie resonances; UV
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MDPI and ACS Style

Rosales, S.A.; González, F.; Moreno, F.; Gutiérrez, Y. Non-Absorbing Dielectric Materials for Surface-Enhanced Spectroscopies and Chiral Sensing in the UV. Nanomaterials 2020, 10, 2078. https://doi.org/10.3390/nano10102078

AMA Style

Rosales SA, González F, Moreno F, Gutiérrez Y. Non-Absorbing Dielectric Materials for Surface-Enhanced Spectroscopies and Chiral Sensing in the UV. Nanomaterials. 2020; 10(10):2078. https://doi.org/10.3390/nano10102078

Chicago/Turabian Style

Rosales, Saúl A., Francisco González, Fernando Moreno, and Yael Gutiérrez. 2020. "Non-Absorbing Dielectric Materials for Surface-Enhanced Spectroscopies and Chiral Sensing in the UV" Nanomaterials 10, no. 10: 2078. https://doi.org/10.3390/nano10102078

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