A5051262884- Acoustic Wave Resonator Technologies
- Laser-Ablation Synthesis of Nanoparticles
- Ultrasonics and Acoustic Wave Propagation
- Laser-induced spectroscopy and plasma
- Nonlinear Optical Materials Studies
- Flow Measurement and Analysis
- Laser Material Processing Techniques
- Nuclear Engineering Thermal-Hydraulics
- Diamond and Carbon-based Materials Research
- Electrical and Thermal Properties of Materials
- Advanced Sensor Technologies Research
- Magnetic Bearings and Levitation Dynamics
- Ocular and Laser Science Research
- Combustion and Detonation Processes
- Engineering Applied Research
- Nuclear reactor physics and engineering
- Manufacturing Process and Optimization
- High Entropy Alloys Studies
- High-Temperature Coating Behaviors
- Ferroelectric and Piezoelectric Materials
- Gas Sensing Nanomaterials and Sensors
Czech Academy of Sciences, Institute of Physics
2023-2025
Institut d'Électronique et des Systèmes
2017-2020
Université de Montpellier
2016-2017
Centre National de la Recherche Scientifique
2016-2017
Pulsed laser ablation in liquids (PLAL) is a versatile technique to produce high-purity colloidal nanoparticles. Despite considerable recent progress increasing the productivity of technique, there still significant demand for practical, cost-effective method upscaling PLAL synthesis. Here we employ and unveil fundamentals multi-beam (MB) PLAL. The MB-PLAL approach can bypass cavitation bubble, main limiting factor efficiency, by splitting beam into several beams using static diffractive...
Abstract High entropy alloys (HEAs) have a wide range of applications across various fields, including structural engineering, biomedical science, catalysis, magnetism, and nuclear technology. Nanoscale HEA particles show promising catalytic properties. Nevertheless, attaining versatile composition control in nanoparticles poses persistent challenge. This study proposes the use pulsed laser ablation liquids (PLAL) for synthesizing using equiatomic CoCrFeMnNi targets with varied preparation...
The potential to modify the size distribution of nanoparticles synthesized by pulsed laser ablation in liquids is demonstrated using a donut-shaped beam. In experiments on water gold, yttrium oxide, and high-entropy alloy targets with both Gaussian beams, we observed significant reduction particle size, narrowing width, an improvement sphericity when utilizing We performed time-resolved shadowgraph imaging laser-induced cavitation bubble, revealing toroidal structure that overruns...
In this paper, we present the first steps in development of a new generation ultrasonic sensors devoted to fission gas characterization material testing reactor harsh environment. The piezoelectric active is sodium bismuth titanate thick film fabricated using screen-printing method. Characterization and dielectric properties parameter studies based on temperature were carried out. key results paper are demonstrated discussed terms feasibility for application sensor device operating at high...
In this article we present a first part of the results obtained during an irradiation campaign conducted at Jozef Stefan Institute to observe behaviour piezoelectric materials under gamma and neutron flux. Specific instrumentation has been developed enabled monitoring throughout several such as lead zirconate titanate (PZT) or modified Bismuth Titanate (BiT) in either massive thick film form. Various parameters resonance frequency, electromechanical coupling coefficient, electrical...
In this paper, we present the manufacture and characterization of a screen-printed, acoustic PZT component with enhancement its properties by optimizing poling densification process. We discuss results obtained on ferroelectric using remnant hysteresis cycle measurements, piezoelectric evaluation d <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">33</sub> coefficients electrical measuring capacitance. addition, first spectrum analysis is presented.
The measurement of substances mixtures properties by ultrasonic approach represents a high interest for industrial sector. In particular, the evaluation fission gas in nuclear combustion rod under harsh temperature and radiative environment is great fuel characterization notably lifetime optimization. Previously, an acoustic sensor situ gases (mainly He He-Xe mixtures) measurements was developed our laboratory tested experimental condition OSIRIS reactor (Alternative Energies Atomic Energy...
In the contemporary world, measurements in hostile environment is one of predominant necessity for automotive, aerospace, metallurgy and nuclear plant. The measurement different parameters experimental reactors an important point power strategy. near past, IES (Institut d’Électronique et des Systèmes) on collaboration with CEA (Commissariat à l’Energie Atomique aux Energies Alternatives) have developed first ultrasonic sensor application gas quantity determination that has been tested a...
Over the last decades, high entropy alloys (HEA) draw a high-interest in fundamental and applied science [1]. Recently, research into generation of HEA nanoparticles (NPs) through pulsed laser ablation liquid (LAL) technique has brought new possibilities to electrochemistry [2]. However, physics behind process for complex multi-element alloy targets still remains be understood.