The 3D Design of Multifunctional Silver Nanoparticle Assemblies Embedded in Dielectrics. Issue 6 (20th January 2020)

• Record Type: Journal Article
• Authors: Bonafos, Caroline; Bayle, Maxime; Benzo, Patrizio; Pugliara, Alessandro; Makasheva, Kremena; Carrada, Marzia; Chery, Nicolas; Balout, Hilal; Benoit, Magali; Tarrat, Nathalie; Benassayag, Gérard; Pécassou, Béatrice; Navarro, Enrique; Carles, Robert
• Is Part Of: Physica status solidi. Volume 217:Issue 6(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-01-20
• Subjects: Ag nanoparticles -- biocide effects -- plasmonic antennas; Solid state physics -- Periodicals; Solids -- Industrial applications -- Periodicals; 530.41
• DOI: 10.1002/pssa.201900619
• Languages: English
• ISSNs: 1862-6300

Abstract

Abstract : Many applications as optical spectroscopy, photothermal therapy, photovoltaics, or photocatalysis take advantage of the localized surface plasmon resonance of noble metal nanoparticles (NPs). Among them, AgNPs are multifunctional nano‐objects that can be used not only as efficient plasmonic antennae but also as electron reservoirs for charge transfer or ion reservoirs with strong biocide activity. Herein, the 10 years' efforts on the safe‐by‐design synthesis of multifunctional nanocomposites consisting of 3D patterns of small AgNPs embedded in dielectrics are presented by coupling low‐energy ion implantation and stencil masking techniques. Their multifunctional coupling with different objects deposited on top of the dielectric surface is also presented through three examples. The twofold role of this single plane of AgNPs as the embedded plasmonic enhancer and charge carrier reservoir is first tested on few‐layer graphene deposited in specific areas at a controlled nanometer distance from the AgNPs. These buried AgNPs are also coupled to light emitters coimplanted in the dielectric matrix in specific regions, showing light emission enhancement. Finally, these AgNPs also provide an efficient biocide activity on green algae when submerged in water, with the amount of Ag + release simply controlled by the thickness of the silica cover layer. Abstract : The safe‐by‐design synthesis of nanocomposites consisting of 3D patterns of small Ag nanoparticles (NPs) embedded in dielectrics is presented. Their twofold role as the embedded plasmonic enhancer and charge carrier reservoir is tested on graphene. The AgNPs also show light emission enhancement when coupled with quantum dots and provide efficient biocide activity on green algae when submerged in water.