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Helicity preserving dielectric metasurfaces for enhanced detection of chiral molecules (Conference Presentation)
Author(s): Ivan Fernandez-Corbaton; Florian Graf; Joshua Feis; Julian Koepfler; Dominik Beutel; Xavier Garcia-Santiago; Carsten Rockstuhl; Martin Wegener

Paper Abstract

The sensing of chiral molecules is important for chemical, pharmaceutical, and medical applications. The fast and accurate testing of small quantities of analyte by optical means is desirable, in particular for lab-on-a-chip technologies. Different nanostructures have been proposed for enhancing the molecular circular dichroism (CD) in their near fields, yet not all structures and near fields serve this purpose equally well. We will present the design guidelines that lead to nanostructures that enhance the CD signal of molecular solutions, use these guidelines for optimizing arrays of silicon disks, and demonstrate a more than tenfold increase in sensitivity.

Paper Details

Date Published: 9 September 2019
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Proc. SPIE 11080, Metamaterials, Metadevices, and Metasystems 2019, 110800S (9 September 2019); doi: 10.1117/12.2530087
Show Author Affiliations
Ivan Fernandez-Corbaton, Karlsruher Institut für Technologie (Germany)
Florian Graf, Karlsruher Institut für Technologie (Germany)
Joshua Feis, Karlsruher Institut für Technologie (Germany)
Julian Koepfler, Karlsruher Institut für Technologie (Germany)
Dominik Beutel, Karlsruher Institut für Technologie (Germany)
Xavier Garcia-Santiago, Karlsruher Institut für Technologie (Germany)
Carsten Rockstuhl, Karlsruher Institut für Technologie (Germany)
Martin Wegener, Karlsruher Institut für Technologie (Germany)


Published in SPIE Proceedings Vol. 11080:
Metamaterials, Metadevices, and Metasystems 2019
Nader Engheta; Mikhail A. Noginov; Nikolay I. Zheludev, Editor(s)

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