Recent efforts in the field of surface-enhanced spectroscopies have focused on the paradigm of "superchirality", entailing the engineering of the local electromagnetic fields to boost the enantiospecific interaction between light and chiral molecules. In this framework, approaches based on both metallic and dielectric nanostructures have been proposed and have also recently been extended to vibrational circular dichroism in the mid-infrared. In this work, we design, fabricate, and characterize a lattice of chiral plasmonic slits featuring enhanced chiral fields in the mid-infrared. We exploit collective lattice resonances to further enhance the local intensity and to generate sharp features in the circular dichroism spectra of the platform. Such features are ideally suited to test the superchiral coupling with the vibrational resonances of chiral molecules.

Plasmonic Superchiral Lattice Resonances in the Mid-Infrared / Mattioli, F.; Mazzeo, G.; Longhi, G.; Abbate, S.; Pellegrini, G.; Mogni, E.; Celebrano, M.; Finazzi, M.; Duo, L.; Zanchi, C. G.; Tommasini, M.; Pea, M.; Cibella, S.; Polito, R.; Sciortino, F.; Baldassarre, L.; Nucara, A.; Ortolani, M.; Biagioni, P.. - In: ACS PHOTONICS. - ISSN 2330-4022. - 7:10(2020), pp. 2676-2681. [10.1021/acsphotonics.0c00161]

Plasmonic Superchiral Lattice Resonances in the Mid-Infrared

Polito R.;Baldassarre L.;Nucara A.;Ortolani M.;
2020

Abstract

Recent efforts in the field of surface-enhanced spectroscopies have focused on the paradigm of "superchirality", entailing the engineering of the local electromagnetic fields to boost the enantiospecific interaction between light and chiral molecules. In this framework, approaches based on both metallic and dielectric nanostructures have been proposed and have also recently been extended to vibrational circular dichroism in the mid-infrared. In this work, we design, fabricate, and characterize a lattice of chiral plasmonic slits featuring enhanced chiral fields in the mid-infrared. We exploit collective lattice resonances to further enhance the local intensity and to generate sharp features in the circular dichroism spectra of the platform. Such features are ideally suited to test the superchiral coupling with the vibrational resonances of chiral molecules.
lattice resonances; mid-infrared; optical chirality; plasmonics; vibrational circular dichroism
01 Pubblicazione su rivista::01a Articolo in rivista
Plasmonic Superchiral Lattice Resonances in the Mid-Infrared / Mattioli, F.; Mazzeo, G.; Longhi, G.; Abbate, S.; Pellegrini, G.; Mogni, E.; Celebrano, M.; Finazzi, M.; Duo, L.; Zanchi, C. G.; Tommasini, M.; Pea, M.; Cibella, S.; Polito, R.; Sciortino, F.; Baldassarre, L.; Nucara, A.; Ortolani, M.; Biagioni, P.. - In: ACS PHOTONICS. - ISSN 2330-4022. - 7:10(2020), pp. 2676-2681. [10.1021/acsphotonics.0c00161]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1646082
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