A5073319079- Laser-Ablation Synthesis of Nanoparticles
- Silicon Nanostructures and Photoluminescence
- Nonlinear Optical Materials Studies
- Gold and Silver Nanoparticles Synthesis and Applications
- Nanowire Synthesis and Applications
- Laser-induced spectroscopy and plasma
- Porphyrin and Phthalocyanine Chemistry
- Carbon Nanotubes in Composites
- Organic Electronics and Photovoltaics
- Quantum Dots Synthesis And Properties
- Semiconductor materials and devices
- Nanoparticles: synthesis and applications
- Gas Sensing Nanomaterials and Sensors
- Ion-surface interactions and analysis
- Luminescence Properties of Advanced Materials
- Crystallization and Solubility Studies
- nanoparticles nucleation surface interactions
- X-ray Diffraction in Crystallography
- Identification and Quantification in Food
- Analytical Chemistry and Sensors
- Ocular and Laser Science Research
- Biosensors and Analytical Detection
- Photodynamic Therapy Research Studies
- Advanced Nanomaterials in Catalysis
- Mechanical and Optical Resonators
Czech Academy of Sciences, Institute of Physics
2019-2025
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
2011-2021
Centre National de la Recherche Scientifique
2012-2019
Aix-Marseille Université
2014-2019
Laboratoire de physique des lasers
2016
Laboratoire de Physique des Plasmas
2014-2016
Délégation Provence et Corse
2016
Université de Lyon
2016
Institut des Nanotechnologies de Lyon
2012-2014
Lasers, Plasmas et Procédés Photoniques
2014
Offering mild, non-invasive and deep cancer therapy modality, radio frequency (RF) radiation-induced hyperthermia lacks for efficient biodegradable RF sensitizers to selectively target cells thus avoid side effects. Here, we assess crystalline silicon (Si) based nanomaterials as the RF-induced therapy. Using nanoparticles produced by mechanical grinding of porous ultraclean laser-ablative synthesis, report heating aqueous suspensions temperatures above 45-50°C under relatively low...
Abstract Si/SiO x nanoparticles (NPs) produced by laser ablation in deionized water or aqueous biocompatible solutions present a novel extremely promising object for biomedical applications, but the interaction of these NPs with biological systems has not yet been systematically examined. Here, we first comprehensive study biodistribution, biodegradability and toxicity laser-synthesized Si-SiO using small animal model. Despite relatively high dose Si-NPs (20 mg/kg) administered intravenously...
We employ a method of femtosecond laser fragmentation preliminarily prepared water-dispersed microcolloids to fabricate aqueous solutions ultrapure bare Si-based nanoparticles (Si-NPs) and assess their potential for biomedical applications. The appear spherical in shape, with low size dispersion controllable mean size, from few nm several tens nm, while negative surface charge (-35 mV ± 0.10 according z-potential data) provides good electrostatic stabilization colloidal Si-NP solutions....
Abstract Presenting a safe alternative to conventional compound quantum dots and other functional nanostructures, nanosilicon can offer series of breakthrough hyperthermia‐based therapies under near‐infrared, radiofrequency, ultrasound, etc., excitation, but the size range sensitize these is typically too large (>10 nm) enable efficient imaging functionality based on photoluminescence properties quantum‐confined excitonic states. Here, it shown that Si nanoparticles (NPs) are capable...
Pulsed laser ablation in liquids is one of the most versatile and widespread techniques for easy synthesis different types nanoparticles with controllable properties. A huge amount energy compressed into pulse that directed onto a solid target leads to ejection materials surrounding liquid. However, precision focus irradiation can play crucial role nanomaterials and, hence, significantly affect their physico-chemical In this paper, we investigated influence position spot on optical...
The ability of noble metal‐based nanoparticles (NPs) (Au, Ag) to drastically enhance Raman scattering from molecules placed near metal surface, termed as surface‐enhanced (SERS), is widely used for identification trace amounts biological materials in biomedical, food safety and security applications. However, conventional NPs synthesized by colloidal chemistry are typically contaminated nonbiocompatible by‐products (surfactants, anions), which can have negative impacts on many live objects...
The rapid and accurate detection of food pathogens plays a critical role in the early prevention foodborne epidemics. Combination low cost sensing platforms SERS can offer solution for pathogen detection.
Plasmonic nanostructures have attracted a broad research interest due to their application perspectives in various fields such as biosensing, catalysis, photovoltaics, and biomedicine. Their synthesis by pulsed laser ablation pure water enables eliminating side effects originating from chemical contamination. Another advantage of liquids (PLAL) is the possibility controllably produce plasmonic nanoparticles (NPs) combination with other or magnetic materials, thus enhancing functionality....
Ultrafast laser processing possesses unique outlooks for the synthesis of novel nanoarchitectures and their further applications in field life science. It allows not only formation multi-element nanostructures with tuneable performance but also provides various non-invasive laser-stimulated modalities. In this work, we employed ultrafast manufacturing silicon–gold nanocomposites (Si/Au NCs) Au mass fraction variable from 15% (0.5 min ablation time) to 79% (10 min) which increased plasmonic...
Abstract We investigate the effect of oxygen molecule adsorption on photoluminescence porous silicon films different porosity. The experimental results are explained by photosensitization singlet generation due to energy transfer from excitons confined in Si nanocrystals O 2 molecules adsorbed nanocrystal surface. time and efficiency found depend porosity samples. increases strongly for with high (>80%) (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Abstract Steady‐state and time‐resolved photoluminescence of silicon nanoparticles dispersed in low‐polar liquids at above room temperature is studied. The roles as well mechanisms responsible for their temperature‐dependent are discussed. thermal sensitivity the estimated application nanothermometers proposed. magnified image (© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Steady-state photoluminescence of silicon nanoparticles embedded in solid-state (nano-Ag/)SiNx thin films at above room temperature is studied and compared to dispersed low-polar liquids. Roles local surface plasmons as well general mechanisms responsible for the temperature-dependent are pointed out. Thermal sensitivities spectral shape, maximum position, full width half-maximum estimated application layers photoluminescent thermal screens proposed.
Continuous wave (CW) radiation from a Yb-fiber laser (central wavelength 1064 nm, power 1-200 W) was used to initiate ablation of gold target in deionized water and synthesize bare (unprotected) nanoparticles. We show that the formed nanoparticles present single low-size-dispersed population with mean size order 10 which contrasts previously reported data on dual populations during pulsed liquids. The lack second is explained by absence cavitation-related mechanism material ablation,...
Non-toxic nanoscale materials are widely employed for different healthcare applications but their performance is still considerably limited. In this paper, various approaches of the environment-friendly ultrafast laser processing were employed...
Contamination‐free silicon‐based nanoparticles (NPs) with several modalities are developed in this work. They formed by non‐toxic laser‐assisted decomposition of silicon microgranules homogeneously dispersed deionized water. Precise control numerous experimental parameters allows repeatable fine tuning nanoparticle size solving significant lacks a direct laser ablation routine. Such method provokes huge amount paramagnetic defect states optically active NPs that can serve as contrast agent...