Hybrid gold-silica nanoparticles for plasmonic applications: A comparison study of synthesis methods for increasing gold coverage

Trihan, Romain; Bogucki, Oskar; Kozłowska, Anna; Ihle, Martin; Ziesche, Steffen; Fetliński, Bartosz; Janaszek, Bartosz; Kieliszczyk, Marcin; Kaczkan, M.; Rossignol, Fabrice; Aimable, Anne

doi:10.1016/j.heliyon.2023.e15977

Cited by 4 publications

(2 citation statements)

References 79 publications

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“…[25,48,49] For these structures, this sensitivity increases with a larger aspect ratio since the longitudinal plasmon wavelength increases and a red-shift in the LSPR peak occurs. [28,29,48,50,51] However, with increasing size, there is an increase in width of the plasmon peak, which can be undesirable as it can reduce the sensitivity and selectivity of target analytes by providing less distinct plasmon shifts with fluorophore interaction. [52][53][54] Regarding arrays, the arrangement of the repeating nanostructures contributes greatly, and has proven to be more efficient at smaller inter-structure distances for MEF.…”

Section: Effect Of Nanostructure Size On Mefmentioning

confidence: 99%

Advances in three dimensional metal enhanced fluorescence based biosensors using metal nanomaterial and nano‐patterned surfaces

Goodrum,

2023

Biotechnology Journal

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Metal enhanced fluorescence (MEF) is a phenomenon that increases fluorescence signal through placement of metal near a fluorophore. For biosensing applications, MEF‐based biosensors are becoming increasingly popular as it enables highly sensitive detection of molecules, important for early diagnosis. The structure and size of the metal influence the optical properties through enhancing the fluorophore photostability and light absorption and emission. In recent years, many metal nanostructures have been fabricated and examined for their effectiveness in developing MEF‐based biosensors. This review focuses on the latest applications of three‐dimensional nanostructures and nano‐patterned surfaces used to develop and improve fluorescence sensing via MEF. Current reviews mostly discussed the applications of two dimensional MEF and metal‐nanoparticles‐based MEF with a focus on fabrication of nanoparticles and metal substrates. In this article, we focused more on the effect of the metal nanostructure and size on MEF and then provided an in‐depth summary of the performance of the state‐of‐the‐art three dimensional MEF‐based biosensors. While more work is needed to demonstrate applicability for complex samples, it is evident that with the use of metal nanoparticles and three dimensional nano‐patterns, the assay sensitivity of fluorescence‐based detection can be greatly improved, making it suitable for use in early disease diagnostics.

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Section: Effect Of Nanostructure Size On Mefmentioning

confidence: 99%

Advances in three dimensional metal enhanced fluorescence based biosensors using metal nanomaterial and nano‐patterned surfaces

Goodrum,

2023

Biotechnology Journal

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“…Hence, generated SPPs inherit the properties of exponential decay into both the metal and the dielectric media in line with the solutions from Maxwell’s equations [ 2 , 38 , 39 , 40 ]. By and large, there are three types of plasmon resonances that are observed in the broad field of metal plasmonics, namely: (i) localized surface plasmon resonance (LSPR), (ii) delocalized surface plasmon resonance and (iii) propagating surface plasmon polaritons (SPPs) [ 41 , 42 , 43 , 44 ]. The LSPR signals are often observed in the case of plasmonic nanomaterials, and a simple example is the absorbance of gold (Au) NPs occurring at ~530 nm for size ~20 nm.…”

Section: Introductionmentioning

confidence: 99%

Review of Gold Nanoparticles in Surface Plasmon-Coupled Emission Technology: Effect of Shape, Hollow Nanostructures, Nano-Assembly, Metal–Dielectric and Heterometallic Nanohybrids

Ganesh,

Bhaskar,

Cheerala

et al. 2024

Nanomaterials

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Point-of-care (POC) diagnostic platforms are globally employed in modern smart technologies to detect events or changes in the analyte concentration and provide qualitative and quantitative information in biosensing. Surface plasmon-coupled emission (SPCE) technology has emerged as an effective POC diagnostic tool for developing robust biosensing frameworks. The simplicity, robustness and relevance of the technology has attracted researchers in physical, chemical and biological milieu on account of its unique attributes such as high specificity, sensitivity, low background noise, highly polarized, sharply directional, excellent spectral resolution capabilities. In the past decade, numerous nano-fabrication methods have been developed for augmenting the performance of the conventional SPCE technology. Among them the utility of plasmonic gold nanoparticles (AuNPs) has enabled the demonstration of plethora of reliable biosensing platforms. Here, we review the nano-engineering and biosensing applications of AuNPs based on the shape, hollow morphology, metal–dielectric, nano-assembly and heterometallic nanohybrids under optical as well as biosensing competencies. The current review emphasizes the recent past and evaluates the latest advancements in the field to comprehend the futuristic scope and perspectives of exploiting Au nano-antennas for plasmonic hotspot generation in SPCE technology.

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Gold nanoparticles in microelectronics advancements and biomedical applications

Ghobashy,

Alkhursani,

Alqahtani

et al. 2024

Materials Science and Engineering: B

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Hybrid gold-silica nanoparticles for plasmonic applications: A comparison study of synthesis methods for increasing gold coverage

Cited by 4 publications

References 79 publications

Advances in three dimensional metal enhanced fluorescence based biosensors using metal nanomaterial and nano‐patterned surfaces

Advances in three dimensional metal enhanced fluorescence based biosensors using metal nanomaterial and nano‐patterned surfaces

Review of Gold Nanoparticles in Surface Plasmon-Coupled Emission Technology: Effect of Shape, Hollow Nanostructures, Nano-Assembly, Metal–Dielectric and Heterometallic Nanohybrids

Gold nanoparticles in microelectronics advancements and biomedical applications

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