Metal-dielectric resonances in tip silicon metasurface and SERS based nanosensors

Andrey K. Sarychev; Andrey N. Lagarkov; Andrey V. Ivanov; Irina A. Boginskaya; Igor V. Bykov; Iliya A. Ryzhikov; Marina V. Sedova; Alexander V. Vaskin; Ilya N. Kurochkin; Ilya A. Rodionov; Dmitriy V. Negrov

doi:10.1117/12.2273097

24 October 2017 Metal-dielectric resonances in tip silicon metasurface and SERS based nanosensors

Andrey K. Sarychev, Andrey N. Lagarkov, Andrey V. Ivanov, Irina A. Boginskaya, Igor V. Bykov, Iliya A. Ryzhikov, Marina V. Sedova, Alexander V. Vaskin, Ilya N. Kurochkin, Ilya A. Rodionov, Dmitriy V. Negrov

Author Affiliations +

Proceedings Volume 10346, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XV; 103460C (2017) https://doi.org/10.1117/12.2273097
Event: SPIE Nanoscience + Engineering, 2017, San Diego, California, United States

Abstract

Optical properties of two-dimensional periodic systems of the dielectric micro bars and micro cones are investigated. Computer simulations as well as real experiment reveal anomalous optical response of the dielectric metasurface due to excitation of the dielectric and metal-dielectric resonances, which are excited in-between metal nanoparticles and dielectric cones and bars. In the metal-dielectric resonance local electric field can be orders on magnitude larger than the field in the plasmon resonance only. To investigate local electric field the signal molecules were deposited on the metal nanoparticles. We demonstrate the enhancement of the electro- magnetic field by detecting the Raman signal from the of organic acid molecules deposited on the investigated metasurface.

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Andrey K. Sarychev, Andrey N. Lagarkov, Andrey V. Ivanov, Irina A. Boginskaya, Igor V. Bykov, Iliya A. Ryzhikov, Marina V. Sedova, Alexander V. Vaskin, Ilya N. Kurochkin, Ilya A. Rodionov, and Dmitriy V. Negrov "Metal-dielectric resonances in tip silicon metasurface and SERS based nanosensors", Proc. SPIE 10346, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XV, 103460C (24 October 2017); https://doi.org/10.1117/12.2273097

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