Development of high-sensitive, reproducible colloidal surface-enhanced Raman spectroscopy active substrate using silver nanocubes for potential biosensing applications

Hasna, K.; Lakshmi, K. Jhansi; Jayaraj, M. K.; Kumar, Kumaran Rajeev; Murukeshan, Vadakke Matham

doi:10.1117/1.jnp.10.026020

Cited by 10 publications

(6 citation statements)

References 30 publications

(31 reference statements)

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“…SERS spectra were recorded with the excitation of 532 nm laser with power 25 μW. All obtained Raman peaks of the R6G molecules (612, 769, 929, 1128, 1188, 1315, 1357, 1505, 1573, and 1650 cm −1 ) matched well with the literature . SERS spectra of R6G molecule show coverage dependency, as the coverage of the Ag nanoparticles increases with increase in reduction time the SERS activity of the R6G also increases.…”

Section: Resultssupporting

confidence: 77%

SILAR grown Ag nanoparticles as an efficient large area SERS substrate

Shaikh

Sartale

2018

J Raman Spectroscopy

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Ag nanoparticles having different size and coverage are grown on large area glass substrate (~10 cm2) using low cost successive ionic layer adsorption and reduction (SILAR) method. The SILAR parameters, such as reduction time and growth cycles are optimized to grow Ag nanoparticles with appropriate size and coverage showing maximum surface enhanced Raman scattering (SERS) enhancement of Rhodamine 6 G(R6G). For fixed growth cycles, the size and the coverage of the grown Ag nanoparticles are found to increase with the reduction time and then saturate. The size and coverage of the grown Ag nanoparticles monotonically increase with growth cycles. However, for higher growth cycles, the shape of Ag nanoparticles could not maintain their sphericity and became rock shaped/nonspherical particles, giving rise to intense quadruple plasmon resonance. The growth mechanism is proposed. Further, SERS activity of the grown Ag nanoparticles is studied for an industrial pollutant methylene blue (MB). The observed SERS enhancement factor (~109) for MB is much higher than the reported values in literature. Measured relative standard deviations values of Ag nanoparticles grown with optimum SILAR parameters suggest the excellent homogeneity and reproducibility of the SERS signal.

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Section: Resultssupporting

confidence: 77%

SILAR grown Ag nanoparticles as an efficient large area SERS substrate

Shaikh

Sartale

2018

J Raman Spectroscopy

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“…The corresponding process can be conducted using appropriate chemical or biological reducing agent or aided by some external source such as electrical current, (Fig. 2) (30)(31)(32)(33)(34)(35). This is the basic principle of chemical, biological and electrochemical preparation methods (36).…”

Section: Synthesis Of Silver Nanomaterialsmentioning

confidence: 99%

“… Schematic presentation of bottom-up synthetic routes from selected publications, combined with various nanosilver structures: a) nanowires (adapted from Min et al ( 32 ) under CC BY 4.0 license), b) nanocubes (adapted from Hasna et al ( 33 ), c) nanodendrites (adapted from Zhang et al ( 34 ) under CC BY 4.0 license, d) nanospheres (adapted from Wang et al ( 30 ) under CC BY-NC 3.0 license), e) roughly shaped particles (adapted from Fu et al ( 31 ) under CC BY 4.0 license and f) nanoflowers (adapted from Huang et al ( 35 ) under CC BY 4.0 license) …”

Section: Synthesis Of Silver Nanomaterialsmentioning

confidence: 99%

Recent Advances in (Bio)Chemical Sensors for Food Safety and Quality Based on Silver Nanomaterials

Ivanišević

Milardović

Kassal

2021

Food Technol. Biotechnol. (Online)

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There is a continuing need for tools and devices which can simplify, quicken and reduce the cost of analyses of food safety and quality. Chemical sensors and biosensors are increasingly being developed for this purpose, reaping from the opportunities provided by nanotechnology. Due to the distinct electrical and optical properties of silver nanoparticles (AgNPs), this material plays a vital role in (bio)sensor development. This review is an analysis of chemical sensors and biosensors based on silver nanoparticles with application in food and beverage matrices. It consists of academic research published from 2015 to 2020. The paper is structured to separately explore the designs of two major (bio)sensor classes: electrochemical (including voltammetric and impedimetric sensors) and optical sensors (including colorimetric and luminescent), with special focus on the type of silver nanomaterial and its role in the sensor system. The review indicates that diverse nanosensors have been developed, capable of detecting analytes such as pesticides, mycotoxins, fertilizers, microorganisms, heavy metals, and various additives with exceptional analytical performance. Current trends in the design of such sensors are highlighted and challenges which need to be overcome in the future are discussed.

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“…The ultrasensitivity of metallic-nanoparticle-based SERS substrates is usually linked to the high number of hotspots formed within the small interspaced gaps between the constituent nanostructures [ 6 ]. Moreover, the enhancement of the SERS signal is highly dependent on the plasmonic resonance frequency of synthesized nanoparticles (NPs) [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Self-Assembled Ag Nanocomposites into Ultra-Sensitive and Reproducible Large-Area SERS-Active Opaque Substrates

Fahes¹,

Naciri²,

Navvabpour

et al. 2021

Nanomaterials

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This work describes a novel, one-shot strategy to fabricate ultrasensitive SERS sensors based on silver/poly(methyl methacrylate) (PMMA) nanocomposites. Upon spin coating of a dispersion of PMMA and silver precursor on N-doped silicon substrate, closely separated silver nanoparticles were self-assembled into uniform nanospheres. As a result, a thin hydrophobic PMMA layer embedded with Ag nanoparticles (AgNPs) was obtained on the whole silicon substrate. Consequently, a large-scale, reproducible SERS platform was produced through a rapid, simple, low-cost, and high-throughput technology. In addition, reproducible SERS features and high SERS enhancement factors were determined (SEF ~1015). This finding matches the highest SEF reported in literature to date (1014) for silver aggregates. The potential and novelty of this synthesis is that no reducing agent or copolymer was used, nor was any preliminary functionalization of the surface carried out. In addition, the AgNPs were fabricated directly on the substrate’s surface; consequently, there was no need for polymer etching. Then, the synthetic method was successfully applied to prepare opaque SERS platforms. Opaque surfaces are needed in photonic devices because of the absence of secondary back reflection, which makes optical analysis and applications easier.

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Development of high-sensitive, reproducible colloidal surface-enhanced Raman spectroscopy active substrate using silver nanocubes for potential biosensing applications

Abstract: Development of high-sensitive, reproducible colloidal surface-enhanced Raman spectroscopy active substrate using silver nanocubes for potential biosensing applications

Cited by 10 publications

References 30 publications

SILAR grown Ag nanoparticles as an efficient large area SERS substrate

SILAR grown Ag nanoparticles as an efficient large area SERS substrate

Recent Advances in (Bio)Chemical Sensors for Food Safety and Quality Based on Silver Nanomaterials

Self-Assembled Ag Nanocomposites into Ultra-Sensitive and Reproducible Large-Area SERS-Active Opaque Substrates

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