A5085737482- Phenothiazines and Benzothiazines Synthesis and Activities
- Semiconductor Lasers and Optical Devices
- Photodynamic Therapy Research Studies
- Photonic and Optical Devices
- Innovative Microfluidic and Catalytic Techniques Innovation
- Nonlinear Dynamics and Pattern Formation
- Chaos control and synchronization
- Electrohydrodynamics and Fluid Dynamics
- bioluminescence and chemiluminescence research
- Surface Modification and Superhydrophobicity
- Laser-Matter Interactions and Applications
- Laser Design and Applications
- Electrowetting and Microfluidic Technologies
- Laser-induced spectroscopy and plasma
- Photochemistry and Electron Transfer Studies
- Bioactive Compounds and Antitumor Agents
- Nanomaterials and Printing Technologies
- Essential Oils and Antimicrobial Activity
- Gold and Silver Nanoparticles Synthesis and Applications
- Free Radicals and Antioxidants
- Laser-Ablation Synthesis of Nanoparticles
- Proteins in Food Systems
- Random lasers and scattering media
- Pickering emulsions and particle stabilization
- Chemical and Physical Studies
National Institute for Laser Plasma and Radiation Physics
2014-2024
This paper presents a spectroscopic study of emulsions generated with laser-assisted device. Fourier transform infrared (FTIR), Raman and UV–Vis–NIR reflectance spectra emulsions, recorded before after exposure to laser radiation were used characterize the effect irradiation. The also comparison between calculated IR experimental FTIR an emulsion’s components. measurements allowed identification absorption bands specific each emulsions’ Moreover, it enabled observation destabilization...
The European Strategy Forum on Research Infrastructures (ESFRI) has selected in 2006 a proposal based ultra-intense laser fields with intensities reaching up to 1022-1023 W cm-2 called 'ELI' for Extreme Light Infrastructure. construction of large-scale laser-centred, distributed pan-European research infrastructure, involving beyond the state-of-the-art ultra-short and technologies, received approval funding 2011-2012. three pillars ELI facility are being built Czech Republic, Hungary...
Introduction Phenothiazines when exposed to white light or UV radiation undergo a variety of reactions that result in degradation parental compound and formation new species. This process is slow may be sped up with exposure high energy such as produced by laser. Methods Varying concentrations Chlorpromazine Hydrochloride (CPZ) (2–20 mg/mL distilled water) were 266 nm laser beam (time intervals: 1–24 hrs). At distinct intervals the irradiation products evaluated spectrophotometry between...
Whereas exposure of combinations a phenothiazine and bacterium to incoherent UV increases the activity phenothiazine, alone does not yield an increase its activity. Because laser beam energy is greater than that produced by sources, phenothiazines specific lasers may molecules with altered activities over unexposed parent. Chlorpromazine, thioridazine promethazine active against bacteria were exposed two distinct for varying periods time. Absorption fluorescence spectra conducted prior...
In this paper, laser beam resonant interaction with pendant microdroplets that are seeded a dye (Rhodamine 6G (Rh6G)) water solution or oily Vitamin A emulsion Rhodamine in is investigated through fluorescence spectra analysis. The excitation made the second harmonic generated emitted by pulsed Nd:YAG system at 532 nm. containing exhibit an enhanced signal. This effect can be explained as being due to scattering of light sub-micrometric drops and spherical geometry droplet. droplet acts...
The interaction of distilled water droplets (volumes 3-4 µ l) with pulsed laser beams emitted at 532 nm is described. At the absorption very low and a droplet radiation dominated by unresonant phenomena. In this case, following collision beam in suspended position air, its deformations mechanical vibrations are produced. conditions which lose material as consequence impact explored. effects produced on were studied pulse depend on: droplet’s content, wavelength, power focusing, irradiation...
Results for the interaction of a 532 nm pulsed laser beam with individual pendant rhodamine 6G dye droplets large-size parameter, x≈7300, are reported. By varying concentration and pumping energy, typical fluorescence bands detected in such cases obtained, along narrow, instantly, or gradually blueshifted band assigned to lasing effect at droplet surface. The maximum blueshift value peak wavelength is associated gain curve when self-absorption effects not present. Lasing position further...
Fluorescence and lasing emission that are produced separately in time during excitation laser pulse for an mm-sized Rhodamine 6G dye-water droplet reported. The acts as a quasi-spherical closed optical resonator due to multiple internal reflections, the resonant amplified is delayed with respect fluorescence emission. Measurements of temporal evolution droplet's were performed by varying signal acquisition gate width delay pumping pulse. spectra structured two bands which appear one after...
Introduction: Phenothiazines when exposed to white light or UV radiation undergo a variety of reactions that result in degradation parental compound and formation new species.This process is slow may be sped up with exposure high energy such as produced by laser. Methods:Varying concentrations Chlorpromazine Hydrochloride (CPZ) (2-20 mg/mL distilled water) were 266 nm laser beam (time intervals: 1-24 hrs).At distinct intervals the irradiation products evaluated spectrophotometry between...
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