A5019720569- Thermography and Photoacoustic Techniques
- Photoacoustic and Ultrasonic Imaging
- Digital Holography and Microscopy
- Metamaterials and Metasurfaces Applications
- Atomic and Molecular Physics
- Advanced Optical Imaging Technologies
- Chalcogenide Semiconductor Thin Films
- Photonic and Optical Devices
- Force Microscopy Techniques and Applications
- Orbital Angular Momentum in Optics
- Near-Field Optical Microscopy
- Spectroscopy and Laser Applications
- thermodynamics and calorimetric analyses
- Thermal Radiation and Cooling Technologies
- Calibration and Measurement Techniques
- Thermal properties of materials
- Advanced Thermoelectric Materials and Devices
- Atomic and Subatomic Physics Research
- Muon and positron interactions and applications
- Laser Design and Applications
- Thermoregulation and physiological responses
- Laser-Matter Interactions and Applications
- Quantum Dots Synthesis And Properties
- Solid State Laser Technologies
- Optical Coherence Tomography Applications
The Abdus Salam International Centre for Theoretical Physics (ICTP)
2016-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
2018-2024
University of Pavia
2024
Consorzio Roma Ricerche
2024
Georgi Nadjakov Institute of Solid State Physics
2019-2024
Bulgarian Academy of Sciences
2019-2024
Indian Centre for Space Physics
2024
University of Trieste
2020
Istituto Nazionale di Fisica Nucleare
2018-2019
Elettra-Sincrotrone Trieste S.C.p.A.
2019
Abstract A chiral meta‐optics platform that incorporates hologram‐multiplexing with low phase distortion and wide‐incident angle tolerance over the broad spectral range of ultraviolet‐visible (UV–vis) regimes holds great potential for photonic‐encryption‐based applications, particularly in next‐generation 3D displays, high‐resolution biomedical imaging, holographic anti‐counterfeiting labeling, multi‐channel optical communication. However, design incorporating giant chirality from UV–vis...
Abstract The FAMU experiment aims to measure for the first time hyperfine splitting of muonic hydrogen ground state. From this measurement proton Zemach radius can be derived and will shed light on determination charge radius. In paper, we describe scientific goal, method detailed preparatory work. This includes outcome preliminary measurements, subsequent refined simulations evaluation expected results. experimental setup being built performed at RAL laboratory muon facility is also described.
In this study the adsorption and photodegradation capabilities of modified multi-walled carbon nanotubes (MWCNTs), using tartrazine as a model pollutant, is demonstrated. MWCNT-COOH/Fe3O4 MWCNT-COOH/Fe3O4/NiO nanocomposites were prepared by precipitation metal oxides in presence MWCNTs. Their properties examined X-ray diffraction powder (XRD), Fourier-transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), scanning (SEM), Raman spectroscopy, synchrotron-based...
Structured beams carrying orbital angular momentum carry significant potential for various applications, including optical trapping, manipulations, communications, microscopy, and so on. Among these, perfect vortex (PV) are highly attractive due to their immunity topological charge variations nondiffracting properties. However, conventional PV beam generation methods typically operate at a single wavelength rely on bulky components, complicating photonic device integration. To address this,...
We describe a calibrated two-beam mode-mismatched thermal lens experiment aimed at determination of the absorption coefficient and photothermal parameters nearly transparent material. The use collimated probe beam in presence focused excitation optimizes experiment. signal becomes independent from Rayleigh waist positions beams. apply this method to determine absolute value diffusivity distilled water 533 nm.
In this study we investigated the population genetic structure of queenless ant Diacamma cyaneiventre. This species, lacking winged queens, is likely to have a restricted female dispersal. We used both mitochondrial and microsatellite markers assess consequence such dispersal at three geographical scales: within given locality (< 1 km), between localities region 10 km) regions (> 36 km). Within locality, strong was observed for DNA (mtDNA) whereas weak or nonexistent microsatellites (around...
We use an optimized pump-probe mode-mismatched thermal lens scheme to determine the optical absorption coefficient and diffusivity of ethanol, benzene, acetone, methanol, toluene chloroform.In this excitation beam is focused in presence a collimated probe beam.The agreement between experimentally obtained results values reported literature good.
In this letter we generalize the thermal lens model to account for Soret effect in binary liquid mixtures. This formalism permits precise determination of coefficient a steady-state situation. The theory is experimentally verified using measured values ethanol/water time evolution signal has been used derive mass-diffusion times from which coefficients were calculated.
We report on the measurement of thermal diffusivity, D, few-layers graphene obtained by chemical vapor deposition, using a noncontact optical microscopy method based mode mismatched lens technique in pump-probe two-laser beams configuration. It takes advantage coaxial counter propagating tightly focused excitation and collimated probe an improved setup. The results: D = (6.5 ± 0.09) × 10−4 m2 s−1, (1.9 0.07) s−1 (1.3 0.05) for four (on glass slide), eight sixteen (freestanding) layers are...
This paper unwraps nanofluids' particle dynamics with multi-walled carbon nanotubes (MWCNTs) in base fluids such as acetone, water, and ethylene glycol. Having confirmed the morphology structure of MWCNTs by field emission scanning electron microscopy, X-ray diffraction, Raman spectroscopic analyses, nanofluids are prepared three different concentrations. The nonzero absorbance at laser wavelength, revealed through UV–visible spectrum, makes thermal diffusivity study sample sensitive...
ZnO microrods (ZnO-MRs) have unique properties that make them highly attractive for applications such as optoelectronics, electronics, and sensors. This work demonstrates the successful synthesis of high-quality ZnO-MRs using a laser-assisted chemical bath deposition method. The optimal growth temperature was found to be 61.10 °C, considerably lower than required conventional methods. Various characterization techniques, including X-ray diffraction (XRD), field emission scanning electron...
This Technical Design Report presents a detailed description of all aspects the LUXE (Laser Und XFEL Experiment), an experiment that will combine high-quality and high-energy electron beam European with high-intensity laser, to explore uncharted terrain strong-field quantum electrodynamics characterised by both high energy intensity, reaching Schwinger field beyond. The further implications for search physics beyond Standard Model are also discussed.
This paper presents two tandemly stacked forward and inverse deep neural networks to model optimize cylindrical shaped transmissive meta-atoms for UV–Vis regime. Conventional modeling of these subwavelength calls repetitive solution Maxwell equations over each instance a mesh grid using some high-end commercial EM simulator. In contrast, Deep Learning (DL)-based approaches can significantly expedite this process owing their abilities intelligently learn approximate Maxwell's without...
A pulsed, tunable, narrow linewidth mid-infrared (mid-IR) laser radiation source was developed to meet the needs of FAMU project (Fisica Atomi MUonici). The main goal this experiment is measure hyperfine splitting ground state muonic hydrogen using pulsed spectroscopy. requires a high energy, mid-IR around resonance energy ΔE1Shfs∼ 0.1828 eV (6.79μm) atom excite it from para (F = 0) ortho 1) spin state. system designed fulfill these requirements based on Difference Frequency Generation (DFG)...
Optical wireless communication (OWC), with its blazing data transfer speed and unparalleled security, is a futuristic technology for connectivity.