A5087814813- Laser-Plasma Interactions and Diagnostics
- Laser Material Processing Techniques
- Laser-induced spectroscopy and plasma
- Laser-Matter Interactions and Applications
- Advanced Surface Polishing Techniques
- Music Technology and Sound Studies
- Acoustic Wave Phenomena Research
- Advanced machining processes and optimization
- Thermography and Photoacoustic Techniques
- High-pressure geophysics and materials
- Ultrasonics and Acoustic Wave Propagation
- Magnetic confinement fusion research
- Ion-surface interactions and analysis
- Plasma Diagnostics and Applications
- Music and Audio Processing
- Laser Design and Applications
- Nuclear Physics and Applications
- Force Microscopy Techniques and Applications
- Advanced X-ray Imaging Techniques
- Photoacoustic and Ultrasonic Imaging
- Surface Roughness and Optical Measurements
- Integrated Circuits and Semiconductor Failure Analysis
- Vibration and Dynamic Analysis
- Electromagnetic Launch and Propulsion Technology
- Building Energy and Comfort Optimization
Hellenic Mediterranean University
2015-2025
FORTH Institute of Mediterranean Studies
2020-2025
Mediterranean University
2024
Centre for Technological Research of Crete
2013-2019
Centre of Plasma Physics - Institute for Plasma Research
2017-2019
Loughborough University
2017
General Hospital of Athens G. Genimatas
2006
Queen's Medical Centre
1993
Cool materials have high solar reflectance (high ability to reflect sunlight), thermal emittance radiate heat) and stay cool in the sun. Various coatings been developed recently. This paper analyses a prototype low cost coating using lime which shows 15% increase compared with standard coating. Also, ageing effect of coloured white are studied while they exposed outdoor conditions. The study that there is an attenuation coatings' spectral demonstrate almost negligible loss visible range,...
The evolution of musical instrument manufacturing has prompted a quest for innovative materials beyond traditional wood. This review explores the utilization composite materials, 3D-printed and metamaterials as favorable alternatives. investigation is driven by challenges such scarcity high-quality tonewoods, variations in wood properties, environmental concerns. Carbon fiber, graphite ceramic polymers, nanocomposites present promising alternatives, offering advantages durability, weight...
The complex frequency domain assurance criterion is here applied for the comparison of a pristine to an altered state vibrating system. was originally proposed detection defects in structures, while later research studies it has been successfully used musical acoustics. In this paper, we evaluate differences vibrational behavior finished and non-finished cymbals by adopting correlation criterion. Since idiophones are playable produce sounds after any manufacturing process, methodology...
Acoustic metamaterials and phononic crystals are progressively consolidating as an important technology that is expected to significantly impact the science industry of acoustics in coming years. In this work, unit cell multiplicity on spectral features acoustic response systematically studied using recently demonstrated laser-plasma sound source characterization method. Specifically, by exploiting advantages method, number repeated cells depth band gaps passband across entire audible range...
In this paper, we present a novel scheme for the controlled generation of tunable narrowband <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>γ</a:mi></a:math>-ray radiation by ultrarelativistic positron beams inside acoustically driven periodically bent crystals. A acoustic crystalline undulator is presented, in which excitation silicon single crystal along (100) planar direction piezoelectric transducer modulates lattice [100] axial direction. An beam directed...
Gear hobbing, as any cutting process based on the rolling principle, is a signally multiparametric and complicated gear fabrication method. Although variety of simulating methods has been proposed, each them somehow reduces actual three-dimensional (3D) to planar models, primarily for simplification reasons. The paper describes an effective factual simulation virtual kinematics solid models representing tool work gear. selected approach, in contrast former modeling efforts, primitively...
Abstract We introduce a novel, gaseous target optical shaping laser set-up, capable to generate short scale length, near-critical profiles via generated colliding blast waves. These are maintain their compressed density for several nanoseconds, being therefore ideal laser-plasma particle acceleration experiments in the near critical plasma regime. Our proposed method overcomes laser-target synchronization limitations and delivers energetic protons, during temporal evolution of optically...
Abstract Phononic crystals and acoustic metamaterials are expected to become an important enabling technology for science industry. Currently, various experimental methods used evaluation of meta-structures, such as impedance tubes anechoic chambers. Here we present a method the precise characterization meta-structures that utilizes rapid broadband pulses generated by point-like effectively massless laser plasma sound sources. The allows frequency response directivity evaluations with...
The study of plasma instabilities is a research topic with fundamental importance since for the majority applications they are unwanted and there always need their suppression. initiating physical processes that seed generation not well understood in all geometries initial states matter. For most instability studies, using linear or even nonlinear magnetohydrodynamics (MHD) theory, crucial step to correctly choose perturbations imposed either by predefined perturbation, usually sinusoidal,...
The temporal rearrangement of the spectral components an ultrafast and intense laser pulse, i.e., chirp offers significant possibilities for controlling its interaction with matter plasma. In propagation ultra-strong pulses within self-induced plasma, pulse can play a major role in dynamics wakefield plasma bubble formation, as well electron injection related acceleration. Here, we experimentally demonstrate control generation efficiency relativistic beam, respect to maximum energy current,...
An integrated method, which combines Electronic Speckle Pattern Interferometry, impulse response measurements, finite element method simulations, and psychoacoustic tests, is proposed to evaluate the vibroacoustic behavior of a carbon fiber bouzouki. Three instruments are manufactured, one qualified via interferometric experimental measurements with reference traditional wooden bouzouki, was evaluated for its sound playability by method. Psychoacoustic tests were used newly further modeled...
Heating behaviours, such as timer and room thermostat settings, are a key influencing factor in energy demand homes. However they difficult to measure directly existing housing with standard heating systems controls. To overcome this, several indirect methods have been developed previous research which estimate behaviours using sensor measurements of temperatures demands the home. This work assesses seven these behaviour calculation through comparative study based on data recorded 20 English...
Advanced numerical simulations, that include modal and frequency response function finite element analysis, domain time method – boundary are performed to study the vibro-acoustic behaviour of crash splash musical cymbals. The results analysis agree well with experimental measurements found in literature. coupled despite their high computational resources demands, used for crucial comparison velocity spectrograms on cymbal radiated sound pressure air. show is characterized by a faster decay...
The transient acoustic dynamics of a splash cymbal are investigated via the Finite Element Method-Boundary Method. Real three-dimensional motion data recorded from interaction drummer–drumstick–cymbal provide initial and loading conditions to simulated drumstick–cymbal Models. Progressively intensified free strokes used as for both experiment simulation. velocity values moving drumstick in various drumming monitored, recorded, analysed input into time domain simulations. synergy capturing...
Abstract Nano-acoustic strain generation in thin metallic films via ultrafast laser excitation is widely used material science, imaging and medical applications. Recently, it was shown that transition metals, such as titanium, exhibit enhanced photoacoustic transduction properties compared to noble silver. This work presents experimental results simulations demonstrate among metals tantalum exhibits superior properties. Experiments of nano-acoustic by femtosecond pulses focused on deposited...
The three dimensional spatiotemporal response of thin metal films surfaces excited by nanosecond laser pulses is investigated in both the thermoelastic and ablation regimes. An experimental whole-field interferometric technique allows for direct monitoring dynamic deformation a macroscopic area on surface with ultrahigh lateral resolution. A specially developed dimension finite element model simulates laser-surface interaction, predicts experimentally obtained results, computes key...
We present an integrated study on the scalability and performance of particle-in-cell (PIC) code simulations CPU GPU architectures high parallelization focused target normal sheath acceleration (TNSA) laser wakefield (LWFA) experiments. The developed models follow experimental specifications high-power lasers systems hosted at infrastructures Institute Plasma Physics & Lasers Hellenic Mediterranean University in Crete, Greece Extreme Light Infrastructure - Nuclear Romania. are implemented...
Abstract The rapid development of high-intensity laser-generated particle and photon secondary sources has attracted widespread interest during the last 20 years not only due to fundamental science research but also because important applications this developing technology. For instance, generation relativistic beams, betatron-type coherent X-ray radiation high harmonic have from various fields technology owing their diverse in biomedical, material science, energy, space, security...
The elastoplastic dynamic mechanical behavior of thin metallic films excited by a nanosecond laser pulse is studied. response the metal numerically described coupled thermal–structural, transient three-dimensional model based on finite element method. developed takes into account temperature-dependent true stress–strain curves, thermal properties and matters phase changes. Since numerical simulations include changes materials properties, obtained spatiotemporal solutions provide detailed...