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01 August 2019
Article (Scientific journals)
A hybrid metal–dielectric zero mode waveguide for enhanced single molecule detection
Zambrana-Puyalto, Xavier; Ponzellini, Paolo; Maccaferri, Nicolò et al.
2019In Chemical Communications
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Abstract :
[en] We fabricated hybrid metal–dielectric nanoslots and measured their optical response at three different wavelengths. The nanostructure is fabricated on a bilayer film formed by the sequential deposition of silicon and gold on a transparent substrate. The optical characterization is done via fluorescence spectroscopy measurements. We characterized the fluorescence enhancement, as well as the lifetime and the detection volume reduction for each wavelength. We observe that the hybrid metal–dielectric nanoslots behave as enhanced zero mode waveguides in the near-infrared spectral region. Their detection volume is such that they can perform enhanced single-molecule detection at tens of μM. We compared their behavior with that of a golden ZMW, and we demonstrated that the dielectric silicon layer improves both the optical performance and the stability of the device.
Disciplines :
Physics
Author, co-author :
Zambrana-Puyalto, Xavier;  Istituto Italiano di Tecnologia
Ponzellini, Paolo;  Istituto Italiano di Tecnologia
Maccaferri, Nicolò ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Tessarolo, Enrico;  CNR-IFN
Pelizzo, Maria Guglielmina;  CNR-IFN
Zhang, Weidong;  Peking University
Barbillon, Grégory;  EPF—École d’Ingénieurs
Lu, Guowei;  Peking University
Garoli, Denis;  Istituto Italiano di Tecnologia
External co-authors :
yes
Language :
English
Title :
A hybrid metal–dielectric zero mode waveguide for enhanced single molecule detection
Publication date :
2019
Journal title :
Chemical Communications
ISSN :
1364-548X
Publisher :
Royal Society of Chemistry, Cambridge, United Kingdom
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Physics and Materials Science

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