A5038186488- Gold and Silver Nanoparticles Synthesis and Applications
- Quantum Dots Synthesis And Properties
- Cultural Heritage Materials Analysis
- Nanocluster Synthesis and Applications
- Perovskite Materials and Applications
- Luminescence Properties of Advanced Materials
- Chalcogenide Semiconductor Thin Films
- Advanced Chemical Sensor Technologies
- Electrochemical Analysis and Applications
- Solid-state spectroscopy and crystallography
- Pesticide Residue Analysis and Safety
- Aesthetic Perception and Analysis
- Laser-Ablation Synthesis of Nanoparticles
- Building materials and conservation
- Art History and Market Analysis
- Analytical Chemistry and Sensors
- Nanoparticles: synthesis and applications
- Insect and Pesticide Research
- Dye analysis and toxicity
- Advanced Semiconductor Detectors and Materials
- Photonic and Optical Devices
- Semiconductor Lasers and Optical Devices
- Spectroscopy Techniques in Biomedical and Chemical Research
- Advanced Nanomaterials in Catalysis
- Plasmonic and Surface Plasmon Research
Centre National de la Recherche Scientifique
2024
Université de Technologie de Troyes
2024
B.I. Stepanov Institute of Physics
2016-2023
National Academy of Sciences of Belarus
2016-2023
Plasmon-exciton coupling is of great importance to many optical devices and applications. One the manifestations plasmon-enhanced fluorescence. Although this effect demonstrated in numerous experimental theoretical works, there are different particle shapes for which not fully investigated. In work electrostatic complexes gold nanorods CdSe/CdZnS quantum dots were studied. Double-resonant have an advantage simultaneous enhancement absorption emission when plasmon bands match excitation...
Metal-enhanced photoluminescence is able to provide a robust signal even from single emitter and promising in applications biosensors optoelectronic devices. However, its realization with semiconductor nanocrystals (e.g., quantum dots, QDs) not always straightforward due the hidden fully described interactions between plasmonic nanoparticles an emitter. Here, we demonstrate nonclassical enhancement (i.e., conventional electromagnetic mechanism) of QD at nonplasmonic conditions correlate it...
Abstract The effect of gold and silver plasmonic films on the photoluminescence photostability InP/ZnSe/ZnSeS/ZnS nanocrystals (quantum dots) is reported. Colloidal promote enhancement quantum dots (more durable emission properties in presence metal nanostructures) through reducing exciton lifetime. In contrast, decreases without changing intensity kinetics. By adjusting excitation wavelength closer to extinction band nanoparticles a 1.8-fold luminescence has been obtained using...
Abstract The methods for the synthesis of gold sols in chloroform have been developed. efficiency organic sol studying real objects painting and its advantage over traditional hydrosol was demonstrated. A new practical application organosols is proposed—the use analysis paintings by surface‐enhanced Raman scattering that can help to identify dyes hydrophobic binders one probe. In practice, metallic makes possible substantially simplify procedure sample preparation. It also shown intensity...
Considerable details in the sampling procedure for detection of pesticide carbendazim by surface-enhanced Raman scattering (SERS) were developed. Experimental parameters and recommendations selected to minimize side processes photodestruction as well reduce background signal from silver substrate. It was found comparison experimental density functional theory calculations data that position SERS bands spectrum depends on nature applied solvent due different orientations with respect surface...
Photoluminescent properties of CdSe/ZnS nanocrystals (quantum dots, QDs) in complexes with elongated gold nanoparticles was found to be dependent on the effective refractive index medium. It has been experimentally shown that changes make possible increase photoluminescence intensity by several times.
The photoluminescence of gold nanorod-quantum dots complexes was investigated in order to find optimal conditions for the luminescence enhancing. number quantum and polyelectrolyte layers on nanorod surface these were considered as main factors enhancement.
We report on surface-enhanced Raman scattering (SERS) activity of bimetallic core-shell Au@Ag nanorods. These nanostructures feature four plasmon maxima in the UV-visible range. Their application for SERS analysis enables matching individual optical properties organic analytes using optimal excitation wavelength resonant both and analytes. It promotes higher sensitivity resonance (SERRS) specific The intensity SERRS spectrum is up to 2 orders magnitude alizarin 4 times malachite green as...
The effect of plasmonic films containing gold nanoparticles different shape (nanospheres and nanorods) on the photostability InP/ZnSe/ZnSeS/ZnS CdSe/ZnCdS/ZnS quantum dots with core/shell structure has been determined. Gold nanospheres increase when excited by blue LED radiation reducing average lifetime state and, accordingly, probability Auger processes. An in complexes nanorods leads to a decrease upon excitation at 449 532 nm.
In the context of development LED luminaries with antibacterial effect but without harmful effects on human health, characteristics an lighting system consisting a commercial violet and green phosphor based CsPbBr3 nanocrystals are studied. Internal efficiency nanocrystalline in silicone compound was found to exceed 40% falling down noticeably because heating for electric current order 0.1 A (excitation intensity W/mm2). This nondesirable feature can be diminished using remote design as well...