Plasmon‐Enhanced Sensing: Current Status and Prospects

Lv, Jiangtao; Leong, Eng Choon; Jiang, Xiaoxiao; Kou, Shan Shan; Dai, Haitao; Lin, Jiao; Liu, Yan Jun; Si, Guangyuan

doi:10.1155/2015/474730

Cited by 17 publications

(10 citation statements)

References 93 publications

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“…The wave vector of the SPP is higher than the maximum wave vector of light propagating in air. Therefore, a higher wave vector can be realized by off‐axis illumination to a metal film through a prism, which has a higher refractive index. The refractive index variation can be detected, as the wave vector of SPP is related to the environment.…”

Section: Application Case Studiesmentioning

confidence: 99%

Parallel Laser Micro/Nano‐Processing for Functional Device Fabrication

Hong

2020

Laser & Photonics Reviews

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Photolithography is one of the most commonly used techniques in semiconductor manufacturing, which is the foundation for all the modern electronic device fabrication. However, deep and extreme ultraviolet lithographic systems as well as the corresponding photomasks are both relatively expensive. The fabrication methods are based on the low‐speed high‐cost electron‐beam lithography or focused‐ion‐beam etching. Therefore, a maskless high‐speed method is highly recommended for the micro/nano‐structure fabrication. Among all these maskless methods, direct laser writing (DLW) is an important and widely adopted micro‐processing technique. Based on the nonlinear exposure, the feature size can achieve down to tens of nanometers. However, the speed of DLW is a technical bottleneck. To overcome this issue, parallel DLW methods are developed, including the self‐assembly microspheres laser patterning, laser interference lithography, and multifocal array DLW. Herein, the principles, advantages, challenges, and applications of these parallel processing technologies are summarized. Nanoscale resolution for large area arbitrary periodic pattern fabrication is achieved. Meanwhile, these technologies have the unique ability to build 3D structures instead of conventional 2D patterns, which is the direction of future micro/nano‐fabrication. These techniques are widely applied to surface processing and functional device fabrication in the field of sensing, solar cells, and metamaterials.

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Section: Application Case Studiesmentioning

confidence: 99%

Parallel Laser Micro/Nano‐Processing for Functional Device Fabrication

Hong

2020

Laser & Photonics Reviews

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“…A surface plasmon resonance (SPR) [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ] is formed when the incident electrons resonate with the vibration on the surface of metallic nanostructures, which has caused broad interest regarding novel applications [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ]. Researchers have shown that plasmonic crystals [ 20 , 21 ] are essential for superlenses [ 22 , 23 ], negative refraction applications [ 24 , 25 ], and ultra-large nonlinearity devices [ 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Liquid Crystal Enabled Dynamic Nanodevices

Meng

Liu

et al. 2018

Nanomaterials

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Inspired by the anisotropic molecular shape and tunable alignment of liquid crystals (LCs), investigations on hybrid nanodevices which combine LCs with plasmonic metasurfaces have received great attention recently. Since LCs possess unique electro-optical properties, developing novel dynamic optical components by incorporating nematic LCs with nanostructures offers a variety of practical applications. Owing to the large birefringence of LCs, the optical properties of metamaterials can be electrically or optically modulated over a wide range. In this review article, we show different elegant designs of metasurface based nanodevices integrated into LCs and explore the tuning factors of transmittance/extinction/scattering spectra. Moreover, we review and classify substantial tunable devices enabled by LC-plasmonic interactions. These dynamically tunable optoelectronic nanodevices and components are of extreme importance, since they can enable a significant range of applications, including ultra-fast switching, modulating, sensing, imaging, and waveguiding. By integrating LCs with two dimensional metasurfaces, one can manipulate electromagnetic waves at the nanoscale with dramatically reduced sizes. Owing to their special electro-optical properties, recent efforts have demonstrated that more accurate manipulation of LC-displays can be engineered by precisely controlling the alignment of LCs inside small channels. In particular, device performance can be significantly improved by optimizing geometries and the surrounding environmental parameters.

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“…The LSPR spectral position is highly dependent on the composition, size or shape of the nanoparticles, as well as the refractive index of the dielectric medium and the spacing between them (Liz-Marzán 2005; Sonnichsen et al 2005;Yamamichi et al 2009). Typical materials for plasmonic applications are noble metals, especially silver and gold; despite silver displays more intense LSPR bands than gold, the higher chemical stability of gold nanostructures has favored its preferential application for biosensing (Estevez et al 2014;Hill 2015;Li et al 2015;Lv et al 2015;Wang and Ma 2009).…”

Section: Introductionmentioning

confidence: 99%

“…These techniques permit an accurate control of the size, shape and spatial distribution of the nanoparticles, allowing manufacturing a wide variety of two dimensional (2D) or quasi-three-dimensional (Q3D) metal nanostructures (nanoholes, nanopillars, nanocrescents, etc. ) with particular enhanced plasmonic properties suitable for biosensing (Bhushan and Matsui 2010;Graells 2007;Guillot and de la Chapelle 2012;Li et al 2015;Lv et al 2015;Zhou et al 2016). However, these techniques are expensive and the patterned regions are small, which difficult the development of applications raising at the same time the cost of potential commercial sensing devices based on those nanostructures.…”

Section: Introductionmentioning

confidence: 99%

Multimodal plasmonic biosensing nanostructures prepared by DNA-directed immobilization of multifunctional DNA-gold nanoparticles

Tort

Salvador

Marco

2017

Biosensors and Bioelectronics

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Biofunctional multimodal plasmonic nanostructures suitable for multiplexed localized surface plasmon resonance (LSPR) biosensing have been created by DNA-directed immobilization (DDI) of two distinct multifunctional biohybrid gold nanoparticles. Gold nanoparticles (AuNP) of distinct sizes, and therefore showing distinct plasmon resonant peaks (RP), have been biofunctionalized and codified with two different single stranded-DNA (ssDNA) chains. One of these oligonucleotide chains has been specifically designed to direct each AuNP to a distinct location of the surface of a DNA microarray chip through specific hybridization with complementary oligonucleotide strands. Scanning Electron Microscopy (SEM) has been used to demonstrate selective immobilization of each AuNP on distinct spots. The second ssDNA chain of the AuNPs provides the possibility to introduce by hybridization distinct types of bioactive molecules or bioreceptors, on a reversible manner. In this work, hapten-oligonucleotide bioconjugate probes, with sequences complementary to the second ssDNA linked to the AuNP, have been synthesized and used to create multiplexed hapten-biofuncionalized plasmonic nanostructures. The oligonucleotide probes consist on anabolic androgenic steroid haptens (AAS) covalently linked to specifically designed oligonucleotide sequences. The biofunctionality of these plasmonic nanostructures has been demonstrated by fluorescent microarray immunoassay and LSPR measurements, recording the shift of the RP produced after the antibody binding to the corresponding hapten-oligonucleotide probes immobilized on the nanostructured surface. Preliminary data show that this approach could allow manufacturing multifunctional multimodal LSPR chips for multiplexed analysis of different substances reaching very good detectability. Thus, small molecular weigh, analytes such as stanozolol (ST,) could be detected at concentrations in the low nM range. The results here presented open the door for an easy way to construct site-encoded multiplexed multimodal LSPR sensor transducers, combining the DDI strategies with multimodal biohybrid nanoparticles showing distinct optical properties.

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Plasmon‐Enhanced Sensing: Current Status and Prospects

Cited by 17 publications

References 93 publications

Parallel Laser Micro/Nano‐Processing for Functional Device Fabrication

Parallel Laser Micro/Nano‐Processing for Functional Device Fabrication

Liquid Crystal Enabled Dynamic Nanodevices

Multimodal plasmonic biosensing nanostructures prepared by DNA-directed immobilization of multifunctional DNA-gold nanoparticles

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