Plasmonic Nanorice Antenna on Triangle Nanoarray for Surface-Enhanced Raman Scattering Detection of Hepatitis B Virus DNA

Li, Ming; Cushing, Scott K.; Liang, Hongyan; Suri, Savan; Ma, Dongling; Wu, Nianqiang

doi:10.1021/ac303387a

Cited by 145 publications

(121 citation statements)

References 56 publications

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“…The ordered Au nanohole array pattern was fabricated on the FTO substrate with nanosphere lithography 40,42 . The FTO substrate was first treated with the acid solution to have a hydrophilic surface.…”

Section: Methodsmentioning

confidence: 99%

Plasmon-induced photonic and energy-transfer enhancement of solar water splitting by a hematite nanorod array

et al. 2013

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Plasmonic metal nanostructures offer a promising route to improve the solar energy conversion efficiency of semiconductors. Here we show that incorporation of a hematite nanorod array into a plasmonic gold nanohole array pattern significantly improves the photoelectrochemical water splitting performance, leading to an approximately tenfold increase in the photocurrent at a bias of 0.23 V versus Ag|AgCl under simulated solar radiation. Plasmoninduced resonant energy transfer is responsible for enhancement at the energies below the band edge, whereas above the absorption band edge of hematite, the surface plasmon polariton launches a guided wave mode inside the nanorods, with the nanorods acting as miniature optic fibres, enhancing the light absorption. In addition, the intense local plasmonic field can suppress the charge recombination in the hematite nanorod photoanode in a photoelectrochemical cell. Our results may provide a general approach to overcome the low optical absorption and spectral utilization of thin semiconductor nanostructures, while further reducing charge recombination losses.

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Section: Methodsmentioning

confidence: 99%

Plasmon-induced photonic and energy-transfer enhancement of solar water splitting by a hematite nanorod array

et al. 2013

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“…Recent advances in virus biosensing have been made, especially in fluorescence, 65 light scattering, 66,67 surface-enhanced Raman scattering (SERS), 68,69 electrochemical, 7,34,70 QCM, 71,72 microcantilevers (MCLs), 73,74 and SPR 17,47 sensors. The breakdown structure of "nanobiosensor for viral detection" segmentation is described in Figure 2.…”

Section: Detection Methods Of Virus Biosensorsmentioning

confidence: 99%

Nanoscale virus biosensors: state of the art

Krejčová¹,

Michálek²,

Rodrigo³

et al. 2015

NDD

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Abstract:Since the beginning of the new millennium, viruses have shown huge epidemiological and pandemic potential: severe acute respiratory syndrome (SARS) in 2002, pandemic swine flu in 2009, and last but not least the West African Ebola outbreak in 2014. The occurrence and spread of the new virus in pandemic dimension poses a threat to the health and lives of 7 billion people worldwide. There is a growing urgency for highly sensitive and selective detection techniques, usable for a wide number of applications, including disease diagnosis, pharmaceutical research, agriculture, as well as preventive measures. Nanobiosensors represent a new promising tool for virus detection. This review gives a brief survey of the issue of viral detection, comprising diagnostics of target structure of viruses such as nucleic acids or proteins. This review covers different detection principles, methods of fabrication, and applications of virus biosensors.

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“…The sandwich approach uses target DNA-Raman reporter molecules [225,[230][231][232][233][234][235][236][237][238][239][240]. The first report of SERS DNA and RNA detection using sandwich structures was published by Mirkin and co-workers.…”

Section: Sers-based Dna Detectionmentioning

confidence: 99%

Fundamentals and applications of SERS-based bioanalytical sensing

et al. 2017

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Abstract:Plasmonics is an emerging field that examines the interaction between light and metallic nanostructures at the metal-dielectric interface. Surface-enhanced Raman scattering (SERS) is a powerful analytical technique that uses plasmonics to obtain detailed chemical information of molecules or molecular assemblies adsorbed or attached to nanostructured metallic surfaces. For bioanalytical applications, these surfaces are engineered to optimize for high enhancement factors and molecular specificity. In this review we focus on the fabrication of SERS substrates and their use for bioanalytical applications. We review the fundamental mechanisms of SERS and parameters governing SERS enhancement. We also discuss developments in the field of novel SERS substrates. This includes the use of different materials, sizes, shapes, and architectures to achieve high sensitivity and specificity as well as tunability or flexibility. Different fundamental approaches are discussed, such as label-free and functional assays. In addition, we highlight recent relevant advances for bioanalytical SERS applied to small molecules, proteins, DNA, and biologically relevant nanoparticles. Subsequently, we discuss the importance of data analysis and signal detection schemes to achieve smaller instruments with low cost for SERS-based point-of-care technology developments. Finally, we review the main advantages and challenges of SERS-based biosensing and provide a brief outlook.

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Plasmonic Nanorice Antenna on Triangle Nanoarray for Surface-Enhanced Raman Scattering Detection of Hepatitis B Virus DNA

Cited by 145 publications

References 56 publications

Plasmon-induced photonic and energy-transfer enhancement of solar water splitting by a hematite nanorod array

Plasmon-induced photonic and energy-transfer enhancement of solar water splitting by a hematite nanorod array

Nanoscale virus biosensors: state of the art

Fundamentals and applications of SERS-based bioanalytical sensing

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