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

被引：2

作者：

Sarychev, Andrey K. ^{[1
]}

Lagarkov, Andreyn N. ^{[1
]}

Ivanov, Andrey V. ^{[1
]}

Boginskaya, Irina A. ^{[1
]}

Bykov, Igor V. ^{[1
]}

Ryzhikov, Ilya A. ^{[1
]}

Sedova, Marina V. ^{[1
]}

Vaskin, Alexander V. ^{[1
]}

Kurochkin, Ilya N. ^{[2
,3
]}

Rodionov, Ilya A. ^{[4
,5
]}

Negrov, Dmitriy V. ^{[6
]}

机构：

[1] Russian Acad Sci, Inst Theoret & Appl Electrodynam, Moscow, Russia

[2] Russian Acad Sci, Emanuel Inst Biochem Phys, Moscow, Russia

[3] Moscow MV Lomonosov State Univ, Fac Chem, Moscow, Russia

[4] All Russia Res Inst Automat, Moscow, Russia

[5] Bauman Moscow State Tech Univ, Moscow, Russia

[6] Moscow Inst Phys & Technol, Moscow, Russia

来源：

PLASMONICS: DESIGN, MATERIALS, FABRICATION, CHARACTERIZATION, AND APPLICATIONS XV | 2017年 / 10346卷

基金：

俄罗斯科学基金会; 俄罗斯基础研究基金会;

关键词：

metal-dielectric resonance; metasurface; SERS; ENHANCED RAMAN-SCATTERING; LOCALIZATION; LIGHT; MICROCAVITIES; RESONATORS; MODES;

D O I：

10.1117/12.2273097

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 electromagnetic field by detecting the Raman signal from the of organic acid molecules deposited on the investigated metasurface.

引用

页数：15

共 34 条

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