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Título: | Surface-enhanced circular dichroism spectroscopy on periodic dual nanostructures |
Autor: | Lasa-Alonso, Jon CSIC ORCID; Abujetas, Diego R. CSIC ORCID; Nodar, Álvaro CSIC ORCID; Dionne, Jennifer; Sáenz, J. J.; Molina-Terriza, Gabriel CSIC ORCID; Aizpurua, Javier CSIC ORCID ; García-Etxarri, Aitzol CSIC ORCID CVN | Palabras clave: | Circular dichroism Chirality Duality symmetry Lattice resonances High refractive index nanoparticles |
Fecha de publicación: | 31-oct-2020 | Editor: | ACS Publications | Citación: | ACS Photonics 7: 2978-2986 (2020) | Resumen: | Increasing the sensitivity of chiral spectroscopic techniques such as circular dichroism (CD) spectroscopy is a current aspiration in the research field of nanophotonics. Enhancing CD spectroscopy depends on two complementary requirements: the enhancement of the electromagnetic fields perceived by the molecules under study and the conservation of the helicity of those fields, guaranteed by duality symmetry. In this work, we introduce a systematic method to design nanostructured dual periodic photonic systems capable of enhancing molecular CD spectroscopy resonantly. As an illustration, we engineer a dual 1D silicon nanoparticle array and show that its collective optical modes can be efficiently employed to resonantly enhance by 2 orders of magnitude the local density of optical chirality and, thus, the CD signal obtained from a given molecular sample on its vicinity. | Descripción: | 9 pags., 4 figs. | Versión del editor: | http://dx.doi.org/10.1021/acsphotonics.0c00611 | URI: | http://hdl.handle.net/10261/231366 | DOI: | 10.1021/acsphotonics.0c00611 | Identificadores: | doi: 10.1021/acsphotonics.0c00611 issn: 2330-4022 |
Aparece en las colecciones: | (CFMAC-IEM) Artículos (CFM) Artículos |
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Surface-enhanced.pdf | 4,34 MB | Adobe PDF | Visualizar/Abrir | |
Supporting Information.pdf | 1,06 MB | Adobe PDF | Visualizar/Abrir |
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