Shape dependent sensing potential of gold nanoparticles in etching based multicolorimetric plasmonic-ELISA

Yadav, Shweta; Satija, Jitendra

doi:10.1039/d2na00266c

Cited by 6 publications

(3 citation statements)

References 61 publications

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“…The method showed a detection limit (LOD) down to 5 pg/mL, which was two orders of magnitude lower than that of the conventional ELISA. Due to their outstanding characteristics such as high extinction coefficient and unique localized surface plasmon resonance (LSPR) property, gold nanoparticles (AuNPs) have been widely used as plasmonic substrates to construct various colorimetric sensing platforms [30,31]. Cysteine can stimulate the aggregation of AuNPs, and the LSPR coupling between the nearby AuNPs can induce the change of solution color from red to blue [32].…”

Section: Colorimetric Methodsmentioning

confidence: 99%

Optical Bioassays Based on the Signal Amplification of Redox Cycling

Feng,

Gao,

et al. 2024

Biosensors

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Optical bioassays are challenged by the growing requirements of sensitivity and simplicity. Recent developments in the combination of redox cycling with different optical methods for signal amplification have proven to have tremendous potential for improving analytical performances. In this review, we summarized the advances in optical bioassays based on the signal amplification of redox cycling, including colorimetry, fluorescence, surface-enhanced Raman scattering, chemiluminescence, and electrochemiluminescence. Furthermore, this review highlighted the general principles to effectively couple redox cycling with optical bioassays, and particular attention was focused on current challenges and future opportunities.

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Section: Colorimetric Methodsmentioning

confidence: 99%

Optical Bioassays Based on the Signal Amplification of Redox Cycling

Feng,

Gao,

et al. 2024

Biosensors

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“…Noble metal nanoparticles (NPs) and thin films have been proven as prominent materials for manipulation of light due to their strong localized surface plasmon resonance and surface plasmon polariton properties. , Notably, silver (Ag) NPs and films, e.g., nanostructures, show the broad spectra of applications: antibacterial, , antimicrobial, gas sensing, , surface-enhanced Raman spectroscopy (SERS) sensing, ,− etc. in addition to plasmonic utilization. , Practical employment of Ag NPs in those reports strongly depends on shape, size, crystallinity, etc. , …”

Section: Introductionmentioning

confidence: 99%

“… 11 , 12 Practical employment of Ag NPs in those reports strongly depends on shape, size, crystallinity, etc. 13 , 14 …”

Section: Introductionmentioning

confidence: 99%

Solid-State Dewetting of Thin Silver Films into Spherical Nanoparticles under High-Current Pulsed Ion Beam Irradiation

Abduvalov,

Kaikanov,

Tikhonov

2023

ACS Omega

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Noble metal nanoparticles (NPs) are important in many applications, including light trapping of photovoltaic cells, photoelectrochemical applications, etc. The present study reports the formation of silver NPs from the as-deposited silver coatings on fused silica substrates by solid-state dewetting induced by highcurrent intense pulsed ion beam (IPIB) irradiation. We described the effects of IPIB irradiation with different ion beam current densities and numbers of pulses on NP morphology and compared the results with conventional rapid thermal annealing (RTA). IPIB irradiation enables superfast heating (higher than 10 9 K/s) and cooling, providing a superfast annealing solid-state dewetting mechanism. Our results demonstrate that the sphericity of silver NPs is enhanced after IPIB irradiation relative to RTA-annealed silver NPs. Our results suggest further possibilities of shape and sphericity control of silver NPs with very fast heating/cooling annealing rates.

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Ultrasensitive detection of microRNA-21 in human serum based on the confinement effect enhanced chemical etching of gold nanorods

Huang,

Cheng,

Wen

et al. 2024

Chinese Chemical Letters

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Shape dependent sensing potential of gold nanoparticles in etching based multicolorimetric plasmonic-ELISA

Abstract: In the present study, a systematic investigation has been carried out for the first time to access the potential of three different shapes of gold nanoparticles (AuNPs), viz. nanorods (AuNRs),...

Cited by 6 publications

References 61 publications

Optical Bioassays Based on the Signal Amplification of Redox Cycling

Optical Bioassays Based on the Signal Amplification of Redox Cycling

Solid-State Dewetting of Thin Silver Films into Spherical Nanoparticles under High-Current Pulsed Ion Beam Irradiation

Ultrasensitive detection of microRNA-21 in human serum based on the confinement effect enhanced chemical etching of gold nanorods

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