Nano-Antennas Based on Silicon-Gold Nanostructures

Kucherik, A. O.; Kutrovskaya, S.; Osipov, A.; Gerke, M. N.; Chestnov, I. Yu.; Аракелян, С. М.; Shalin, Alexander S.; Evlyukhin, Andrey B.; Kavokin, Alexey

doi:10.1038/s41598-018-36851-w

Cited by 34 publications

(18 citation statements)

References 14 publications

(14 reference statements)

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“…The history of AuNPs dates back to remote times when red ruby glass began to be used; however, they received the maximum attention starting from the end of the seventeenth century. The properties of metallic gold, such as optical and thermal, are explained by describing the plasmon resonance, which makes the AuNPs employable as sensors [5], ultra-small light emitters [6], nano heaters [7], or nano antennas [8]. Gold is an element that has a singular mix of physical and chemical features both in macroscopic and microscopic conditions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Chemical–Physical Characterization, and Biomedical Applications of Functional Gold Nanoparticles: A Review

et al. 2021

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Relevant properties of gold nanoparticles, such as stability and biocompatibility, together with their peculiar optical and electronic behavior, make them excellent candidates for medical and biological applications. This review describes the different approaches to the synthesis, surface modification, and characterization of gold nanoparticles (AuNPs) related to increasing their stability and available features useful for employment as drug delivery systems or in hyperthermia and photothermal therapy. The synthetic methods reported span from the well-known Turkevich synthesis, reduction with NaBH4 with or without citrate, seeding growth, ascorbic acid-based, green synthesis, and Brust–Schiffrin methods. Furthermore, the nanosized functionalization of the AuNP surface brought about the formation of self-assembled monolayers through the employment of polymer coatings as capping agents covalently bonded to the nanoparticles. The most common chemical–physical characterization techniques to determine the size, shape and surface coverage of AuNPs are described underlining the structure–activity correlation in the frame of their applications in the biomedical and biotechnology sectors.

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Section: Introductionmentioning

confidence: 99%

Synthesis, Chemical–Physical Characterization, and Biomedical Applications of Functional Gold Nanoparticles: A Review

et al. 2021

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“…Spectral overlap between PL emission wavelength and LSPR peak (Fig. 6) can also enhance the PL emission strength of CdTe QD in presence of MNP in a way like antenna effect 52,53 . We attribute the increase in A 2 to the antenna effect enhancement and band to band recombination due to the reduction in Auger recombination.…”

Section: Resultsmentioning

confidence: 99%

Role of Auger Recombination in Plasmon Controlled Photoluminescence Kinetics in Metal-Semiconductor Hybrid Nanostructures

Gurung¹,

Singh²,

Jayabalan³

2020

Preprint

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Spectroscopic studies of semiconductor quantum dots (SQDs) addressing the problem of nonradiative carrier losses is vital for the improvement in the efficiency of various light-emitting devices. Various designs of SQDs emitter like doping, forming core-shell and alloying has been attempted to suppress non-radiative recombination. In this article, we show that forming a hybrid with metal nanoparticles (MNP) having localized surface plasmon resonance overlapped with the emission spectrum of SQD, the non-radiative carrier loss via Auger recombination can be mitigated. Using steady-state and time-resolved photoluminescence, it has been shown that when such hybrid is selectively excited well above the bandgap without exciting plasmon, the contribution to fast decay time reduces along with an increase in contributions to longer decay times. A completely reverse kinetics is observed when exciton and plasmon are simultaneously excited. Such control of photoluminescence kinetics by placing MNP near SQD opens up a new method for designing hybrid materials that are well suited for light-emitting devices.

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“…In addition to heterodimers, composite structures comprising metal and dielectric nanoparticles have also been reported in other architectures, such as hybrid Au–dielectric particle clusters, [ 213 ] SiO 2 @Si arrays coated with Au nanoparticles, [ 195 ] plasmonic nanosponges filled with Si, [ 185 ] and Au@ZnS core–shell nanostructures. [ 189 ] Among these designs, Kucherik et al.…”

Section: Manipulation Of the Scattering Characteristicsmentioning

confidence: 99%

“…demonstrated a hybrid structure of Si spheres covered with Au nanoclusters, which were prefabricated in liquid phase under laser irradiation. [ 213 ] Coating of Au nanoparticles enhances the local near‐field density and resonant light absorption of these complex nanoresonators. Another typical composite is the core–shell structure with Au particles as the core and with dielectric ZnO materials as the shell.…”

Section: Manipulation Of the Scattering Characteristicsmentioning

confidence: 99%

Resonant Scattering Manipulation of Dielectric Nanoparticles

Zhang

et al. 2021

Advanced Optical Materials

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The concentration and manipulation of light in the nanoscale range are fundamental to nanophotonic research. Plasmonic nanoparticles can localize electromagnetic waves within subdiffraction volumes, but they also undergo large Joule losses and inevitable thermal heating. Subwavelength dielectric nanoparticles have emerged as a new class of photonic building blocks that enhance light–matter interactions within nanometric volumes. These nanoparticles exhibit strong electric and magnetic responses with negligible energy dissipation. In recent decades, the design of efficient dielectric nanoresonators has seen tremendous progress. In this review, recent theoretical and experimental advances in characterizing the optical properties of dielectric nanoparticles, from resonant single‐particle scattering characteristics to multimodal interference in complex particle assemblies, are discussed. Specific attention is paid to novel strategies employed to manipulate far‐field Mie‐type scattering, enhance local electromagnetic field, and boost magnetic resonance, as well as ultimately achieve Fano‐like resonance, unidirectional scattering (Kerker conditions), and photon waveguide. A collection of emerging applications of dielectric nanoparticles is also highlighted and the fundamental prospects of designing all‐dielectric/metallic–dielectric photonic nanostructures are considered, particularly those of functional dielectric materials and all‐dielectric 3D assemblies.

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Nano-Antennas Based on Silicon-Gold Nanostructures

Cited by 34 publications

References 14 publications

Synthesis, Chemical–Physical Characterization, and Biomedical Applications of Functional Gold Nanoparticles: A Review

Synthesis, Chemical–Physical Characterization, and Biomedical Applications of Functional Gold Nanoparticles: A Review

Role of Auger Recombination in Plasmon Controlled Photoluminescence Kinetics in Metal-Semiconductor Hybrid Nanostructures

Resonant Scattering Manipulation of Dielectric Nanoparticles

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