Periodic Metallic Nanostructures as Plasmonic Chemical Sensors

Valsecchi, Chiara; Brolo, Alexandre G.

doi:10.1021/la400085r

Cited by 196 publications

(144 citation statements)

References 76 publications

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“…Figure 4a shows the drop wavelength shift with different ambient RI values. This structure has a high sensitivity up to 1303 nm/RIU, as indicated in Figure 4b, which can meet the requirement of chemical-sensing [31]. Besides, the sensitivity can be easily enhanced by increasing the side length of the SRR [14].…”

Section: Applications In Sensing and Switchingmentioning

confidence: 91%

Plasmonic Filter and Demultiplexer Based on Square Ring Resonator

Zhang

Yang

et al. 2018

Applied Sciences

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Abstract:A ring resonator is a basic component of traditional photonic integrated circuits (PIC), which has been, however, found difficult to be applied efficiently in high-compact plasmonic metal-insulator-metal (MIM) systems. Here, based on a plasmonic band-stop filter with a square ring resonator (SRR), a novel side-coupling method is introduced both numerically and theoretically to achieve a drop in the resonant wavelength in the SRR with considerable efficiency. By introducing the reflector structure, the performance can be appreciably improved. Besides, this structure also has potential for sensing and switching. Finally, a dual demultiplexer based on SRRs is realized at telecommunication wavelengths with comparable performance, which makes it possible to apply ring resonators in on-chip plasmonic wavelength division multiplex (WDM) networks. This work is valuable for PIC design, and will promote the on-chip plasmonic system progress.

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Section: Applications In Sensing and Switchingmentioning

confidence: 91%

Plasmonic Filter and Demultiplexer Based on Square Ring Resonator

Zhang

Yang

et al. 2018

Applied Sciences

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“…Existem diferentes modos de detecção que podem ser empregados dependendo do analito a ser detectado, devendo ser considerados o tamanho e a concentração do analito, além das características da sua ligação com o elemento de bioreconhecimento, por exemplo: detecção direta; por configuração sanduíche, por competição; por inibição e por detecção indireta. 65 Estes modos de detecção podem ser empregados na detecção de DNA, proteínas, anticorpos e outras biomoléculas de interesse. (25) Recentemente, o conceito de FOM foi expandido quando Bahrami et al 73 consideraram características físicas da plataforma utilizada em um biossensor para estimar valores de FOM.…”

Section: Aplicação De Nanopartículas Plasmônicas Em Sensores Biológicosunclassified

Ressonância de plasmon de superfície localizado e aplicação em biossensores e células solares

Santos¹,

Santos²,

Thesing³

et al. 2016

Quim. Nova

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LOCALIZED SURFACE PLASMON RESSONANCE APPLIED TO BIOSENSORS AND SOLAR CELLS. Within the last decades, the research on nanoparticles presenting localized surface plasmon resonance has increased constantly. In these materials, the interaction between electrons and incident light results in charge separation, enhancement of the electromagnetic field on the nanoparticles surface and in unique optical properties. Although many metals such as gold, silver, copper and aluminum present localized surface plasmon resonance within the visible range, gold and silver are the most commonly studied metals, due to the chemical inertia of gold and intense plasmon resonance from silver. In this review, we provide a description of the origin of localized surface plasmon resonance through the works developed by Mie, Maxwell and Maxwell-Garnett and a description of many examples of application of plasmonic nanoparticles on biosensors and solar cells, detailing the contribution of these plasmonic nanoparticles on the performance of these devices.Keywords: LSPR; Localized Surface Plasmon Resonance; biosensor; solar cell. INTRODUÇÃONos últimos 20 anos o interesse por nanopartículas metálicas (NPs-M) tem aumentado constantemente devido a sua ampla variedade de aplicações.1-8 Vários grupos de pesquisa têm estudado desde nanopartículas isoladas de cerca de 1 nm até nanopartículas de centenas de nanômetros, assim como seus aglomerados, buscando entender seu comportamento óptico e catalítico. Adicionalmente, a literatura descreve a constante busca por metodologias de síntese cada vez mais simples, de baixo custo e com alta reprodutibilidade. O comportamento óptico de nanopartículas metálicas tem fascinado a humanidade há vários séculos através de obras de arte, mesmo antes que a palavra nanotecnologia fosse utilizada.9 Um dos exemplos mais conhecidos é a Taça de Lycurgus (século 4 d.C), que tem em sua composição nanopartículas de ouro (NPAu).10 No entanto, foi somente em 1857 que as NPs-M receberam maior atenção devido aos estudos de Michael Faraday sobre o efeito da interação da luz em uma solução coloidal de NPAu obtida através da redução do cloreto de ouro pelo fósforo.11,12 Deste então, o interesse nestas NPs tem aumentado e novas metodologias de síntese e caracterização têm sido desenvolvidas, possibilitando grande controle de tamanho e formato.13-15 A pesquisa nesta área foi enriquecida pela compreensão do efeito da ressonância de plasmon de superfície localizado (LSPR), que explica o comportamento óptico destes materiais. Mie foi o primeiro a elucidar a origem das cores nestas estruturas e sua teoria foi posteriormente complementada com os modelos de Maxwell-Garnett que explicavam a interação de NPs-M com o meio. Estes estudos proporcionaram uma ampla visão quanto as possíveis aplicações das NPs-M, sendo atualmente empregada no desenvolvimento de novos materiais como células solares, biossensores e catalisadores. Nesta revisão, serão abordados os embasamentos teóricos envolvidos no efeito LSPR de NPs-M, destacando a aplicação destas n...

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“…In optimized geometries, this leads to a transmittance much greater than predicted from classical aperture theory, a phenomenon known as extraordinary optical transmission (EOT) [80][81][82]. In this context, Maeda et al utilized the infrared transmittance through an array of rectangular subwavelength holes in a palladium film to sensitively detect hydrogen [78].…”

Section: Complex Grating-based Plasmonic Hydrogen Sensorsmentioning

confidence: 99%

Plasmonic gas and chemical sensing

2014

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Sensitive and robust detection of gases and chemical reactions constitutes a cornerstone of scientific research and key industrial applications. In an effort to reach progressively smaller reagent concentrations and sensing volumes, optical sensor technology has experienced a paradigm shift from extended thin-film systems towards engineered nanoscale devices. In this size regime, plasmonic particles and nanostructures provide an ideal toolkit for the realization of novel sensing concepts. This is due to their unique ability to simultaneously focus light into subwavelength hotspots of the electromagnetic field and to transmit minute changes of the local environment back into the farfield as a modulation of their optical response. Since the basic building blocks of a plasmonic system are commonly noble metal nanoparticles or nanostructures, plasmonics can easily be integrated with a plethora of chemically or catalytically active materials and compounds to investigate processes ranging from hydrogen absorption in palladium to the detection of trinitrotoluene (TNT). In this review, we will discuss a multitude of plasmonic sensing strategies, spanning the technological scale from simple plasmonic particles embedded in extended thin films to highly engineered complex plasmonic nanostructures. Due to their flexibility and excellent sensing performance, plasmonic structures may open an exciting pathway towards the detection of chemical and catalytic events down to the single molecule level.

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Periodic Metallic Nanostructures as Plasmonic Chemical Sensors

Cited by 196 publications

References 76 publications

Plasmonic Filter and Demultiplexer Based on Square Ring Resonator

Plasmonic Filter and Demultiplexer Based on Square Ring Resonator

Ressonância de plasmon de superfície localizado e aplicação em biossensores e células solares

Plasmonic gas and chemical sensing

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