Design of silver nanoparticles with graphene coatings layers used for LSPR biosensor applications

barghouti, Mohamed El; Akjouj, Abdellatif; Mir, Abdellah

doi:10.1016/j.vacuum.2020.109497

Cited by 45 publications

(10 citation statements)

References 50 publications

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“…The resulting heterostructures allowed them to detect a tuberculosis antigen, CFP-10, with adetection limit of 4.5 pg/mL. AgNPs have also been widely used in graphene-based hybrid plasmonic materials for sensing biomolecules, such as phosphate buffered saline (PBS), DNA, dopamine (DA), and glutathione (GSH) [ 110 , 111 ].…”

Section: Plasmonic Sensing Applicationsmentioning

confidence: 99%

Plasmonic sensors based on graphene and graphene hybrid materials

et al. 2022

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The past decade has witnessed a rapid growth of graphene plasmonics and their applications in different fields. Compared with conventional plasmonic materials, graphene enables highly confined plasmons with much longer lifetimes. Moreover, graphene plasmons work in an extended wavelength range, i.e., mid-infrared and terahertz regime, overlapping with the fingerprints of most organic and biomolecules, and have broadened their applications towards plasmonic biological and chemical sensors. In this review, we discuss intrinsic plasmonic properties of graphene and strategies both for tuning graphene plasmons as well as achieving higher performance by integrating graphene with plasmonic nanostructures. Next, we survey applications of graphene and graphene-hybrid materials in biosensors, chemical sensors, optical sensors, and sensors in other fields. Lastly, we conclude this review by providing a brief outlook and challenges of the field. Through this review, we aim to provide an overall picture of graphene plasmonic sensing and to suggest future trends of development of graphene plasmonics.

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Section: Plasmonic Sensing Applicationsmentioning

confidence: 99%

Plasmonic sensors based on graphene and graphene hybrid materials

et al. 2022

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“…In the case of metal NPs, it is well known that they can be used as antioxidants, biosensors, and for heavy metal detection [134][135][136]. Moreover, their unique physicochemical properties such as the ability to bind biomolecules, large surface area to volume ratio, high surface reactivity, easy to synthesize and characterize, reduced cytotoxicity, and their visible light extension behavior allow their use as antimicrobial agents [137][138][139][140].…”

Section: Gold and Silver Nanoparticles Applications In Agroindustrymentioning

confidence: 99%

Green Synthesis of Metal Nanoparticles from Plant Extracts, and Their Possible Application as Antimicrobial Agents in the Agricultural Area

Henríquez¹,

Alfaro-Aguilar²,

Ugalde-Álvarez³

et al. 2020

Preprint

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Currently, metal nanoparticles have varied uses for different medical, pharmaceutical, and agricultural applications. Nano-biotechnology combined with green chemistry has great potential for the development of novel and necessary products that benefit human activities, while encourages the reduction of hazardous reagents for nanoparticle production. Green chemistry has an important role due to its contribution to unconventional synthesis methods of gold and silver nanoparticles from plant extracts, which have exhibited antimicrobial potential among other outstanding properties. Biodiversity-rich countries need to collect and convert knowledge from biological resources into processes, compounds, methods, and tools, which need to be achieved along with sustainable use and exploitation of biological diversity. Therefore, this review focuses on the importance of metal nanoparticles, the use of plant extract for their synthesis as well as other available methods, and the relevant antimicrobial activity that can be exploited in a sustainable model of agricultural management through a modern nanotechnological approach.

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“…Graphene, as an atomically thin material with very low permeability [ 28 , 29 , 30 ], seems to be an ideal passivating coating to prevent the surface oxidation of Ag films and NPs [ 25 , 31 , 32 ]. It was demonstrated that graphene can improve the sensitivity of silver-based LSPR sensors and delay the oxidation process of Ag NPs effectively [ 33 , 34 , 35 , 36 ]. Nevertheless, it was also shown that oxygen can penetrate through the defects and grain boundaries of large-area graphene grown by chemical vapor deposition (CVD) [ 37 ].…”

Section: Introductionmentioning

confidence: 99%

Graphene-Encapsulated Silver Nanoparticles for Plasmonic Vapor Sensing

et al. 2022

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Graphene-covered silver nanoparticles were prepared directly on highly oriented pyrolytic graphite substrates and characterized by atomic force microscopy. UV–Vis reflectance spectroscopy was used to measure the shift in the local surface plasmon resonance (LSPR) upon exposure to acetone, ethanol, 2-propanol, toluene, and water vapor. The optical responses were found to be substance-specific, as also demonstrated by principal component analysis. Point defects were introduced in the structure of the graphene overlayer by O2 plasma. The LSPR was affected by the plasma treatment, but it was completely recovered using subsequent annealing. It was found that the presence of defects increased the response for toluene and water while decreasing it for acetone.

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Design of silver nanoparticles with graphene coatings layers used for LSPR biosensor applications

Cited by 45 publications

References 50 publications

Plasmonic sensors based on graphene and graphene hybrid materials

Plasmonic sensors based on graphene and graphene hybrid materials

Green Synthesis of Metal Nanoparticles from Plant Extracts, and Their Possible Application as Antimicrobial Agents in the Agricultural Area

Graphene-Encapsulated Silver Nanoparticles for Plasmonic Vapor Sensing

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