The performance enhancement of surface plasmon resonance optical sensors using nanomaterials: A review

Philip, Abin; Kumar, A. Ruban

doi:10.1016/j.ccr.2022.214424

Cited by 124 publications

(32 citation statements)

References 253 publications

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“…The monodispersed SA-AgNPs exhibited a single characteristic absorption band at 400 nm, which is attributed to the surface plasmon resonance effect of AgNPs and shows a yellow color (inset of Figure 1 ). The collective oscillation of the metal-free electrons for the nanoparticle lattice in resonance with the electromagnetic source was caused by the intense interaction of incident light with metal nanoparticles [ 28 , 29 ]. This phenomenon is known as the SPR.…”

Section: Resultsmentioning

confidence: 99%

Sodium-Alginate-Functionalized Silver Nanoparticles for Colorimetric Detection of Dimethoate

Zhou

Chang

et al. 2022

Biosensors

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Sodium alginate (SA) was used to functionalize the surfaces of silver nanoparticles (AgNPs) to form SA-AgNPs for sensing dimethoate with a rapid and sensitive visual readout. UV–Vis spectrophotometry, Fourier transform infrared spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and zeta potential measurements were used to characterize SA-AgNPs that were synthesized under the ideal conditions. SA-AgNPs were spherical with an average size of 14.6 nm. The stability of SA-AgNPs was investigated with changes in pH, salinity, and storage time. This colorimetric assay of dimethoate relied on the change in the absorption ratio (A475/A400) of SA-AgNPs, resulting in their aggregation caused by dimethoate, leading to a visual change for SA-AgNPs from yellow to pale yellow. As a result, the absorption ratio (A475/A400) of SA-AgNPs showed good linearity in the range of 0.05 to 2.0 ppm (R2 = 0.9986) with a limit of detection (LOD) of 30 ppb. Adding other pesticides did not significantly change the absorption ratio of SA-AgNPs, indicating its high selectivity as a colorimetric assay. The sensor was successfully used to detect dimethoate in actual water samples.

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Section: Resultsmentioning

confidence: 99%

Sodium-Alginate-Functionalized Silver Nanoparticles for Colorimetric Detection of Dimethoate

Zhou

Chang

et al. 2022

Biosensors

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“…Plasmonic nanoparticles (e.g., Au and Ag) exhibit strong optical resonance for visible and near-infrared wavelengths. We believe that the analytical performance, including detection limit and linear range, could be further improved by using magneto-plasmonic nanostructures as the signal labels [ 23 , 26 , 27 , 28 , 41 ].…”

Section: Resultsmentioning

confidence: 99%

“…A good example of the concept is the electrochemical magnetobiosensor [ 18 , 19 , 20 ], in which the analyte-bound MNPs are collected by a magnetic electrode to produce a strong electrochemical signal. Alternately, the MNPs can also be captured by nucleic acid- or antibody-modified solid surfaces to produce optical signals [ 6 , 7 , 21 , 22 , 23 , 24 , 25 ]. For instance, MNPs have been successfully used to enhance the SPR signal due to their advantages of high molecular mass, high refractive index, low production cost and easy synthesis through hydrothermal and co-precipitative methods [ 4 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Surface Plasmon Resonance Biosensors with Magnetic Sandwich Hybrids for Signal Amplification

Sun

Zhao

et al. 2022

Biosensors

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The conventional signal amplification strategies for surface plasmon resonance (SPR) biosensors involve the immobilization of receptors, the capture of target analytes and their recognition by signal reporters. Such strategies work at the expense of simplicity, rapidity and real-time measurement of SPR biosensors. Herein, we proposed a one-step, real-time method for the design of SPR biosensors by integrating magnetic preconcentration and separation. The target analytes were captured by the receptor-modified magnetic nanoparticles (MNPs), and then the biotinylated recognition elements were attached to the analyte-bound MNPs to form a sandwich structure. The sandwich hybrids were directly delivered to the neutravidin-modified SPR fluidic channel. The MNPs hybrids were captured by the chip through the neutravidin–biotin interaction, resulting in an enhanced SPR signal. Two SPR biosensors have been constructed for the detection of target DNA and beta-amyloid peptides with high sensitivity and selectivity. This work, integrating the advantages of one-step, real-time detection, multiple signal amplification and magnetic preconcentration, should be valuable for the detection of small molecules and ultra-low concentrations of analytes.

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“…The SPR sensor features high sensitivity, whereas, assemble sensitive film coating process often affects the measurement accuracy and also introduces considerable process difficulty. 21 In addition, the abovementioned types of sensors are widely used in the transmissive system, the analyte solution is commonly injected into the U-shape groove or employs a microfluidic device, which increases the complexity of operations. 22 In general, the transmissive sensor was susceptible to cross sensitivity of fiber distortion and temperature during actual applications.…”

Section: Introductionmentioning

confidence: 99%

Reflective epoxy resin/chitosan/PAA composite-functionalized fiber-optic interferometric probe sensor for sensitive heavy metal ion detection

Yan

Wang

et al. 2023

Analyst

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The performance enhancement of surface plasmon resonance optical sensors using nanomaterials: A review

Cited by 124 publications

References 253 publications

Sodium-Alginate-Functionalized Silver Nanoparticles for Colorimetric Detection of Dimethoate

Sodium-Alginate-Functionalized Silver Nanoparticles for Colorimetric Detection of Dimethoate

Surface Plasmon Resonance Biosensors with Magnetic Sandwich Hybrids for Signal Amplification

Reflective epoxy resin/chitosan/PAA composite-functionalized fiber-optic interferometric probe sensor for sensitive heavy metal ion detection

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