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Search results for: laser
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<title>Cavity simulator and controller for VUV free electron laser SIMCON 2.1, part I: algorithms and SIMCON system</title>
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Scanning with Laser Beam over the TiO2 Nanotubes Covered with Thin Chromium Layers towards the Activation of the Material under the Visible Light
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Interferometric optical fiber sensors with active stabilization of the operating point using a tunable semiconductor laser. Optical Fibres and Their Applications VIII.
PublicationW pracy przedstawiono wyniki badań światłowodowych interferometrycznych sensorów siły wykonanych w konfiguracji interferometru Michelsona i wykorzystujących aktywną stabilizację punktu pracy przy pomocy zmiany długości fali źródła. Porównano dwie klasy omawianych sensorów a następnie zrealizowano sensor. W konstrukcji sensora zastosowano modulator z pośrednim pomiarem siły. Mierzona siła jest zamieniana na ciśnienie hydrostatyczne,...
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Experimental investigation of selective laser melting parameters for higher surface quality and microhardness properties: taguchi and super ranking concept approaches
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Particle size distribution (laser granulometry) of pristine bismuth oxide (Bi2O3) and gadolinium oxide (Gd2O3) structures
Open Research DataData contain raw results of particle size distribution (by volume) of Bi2O3 and Gd2O3 particles determined using a laser diffraction method (Malvern Mastersizer 2000, Worcestershire, UK).
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The effect of numerical 2D and 3D FEM element modelling on strain and stress distributions at laser weld notches in steel sandwich type panels
PublicationLike other means of transport, merchant ships face the problem of increasing requirements concerning the environment protection, which, among other issues, implies the reduction of fuel consumption by the ship. Here, the conventional approach which consists in making use of higher strength steels to decrease the mass of the ship hull can be complemented by the use of new steel structures of sandwich panel type. However, the lack...
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Boron-doped carbon nanowalls for fast and direct detection of cytochrome C and ricin by matrix-free laser desorption/ionization mass spectrometry
PublicationDetecting proteins via surface assisted laser desorption/ionization mass spectrometry (SALDI-MS) method is still highly challenging, and only few examples of nanomaterials have been demonstrated to perform such detection so far. In this study, carbon nanowalls (CNWs), vertically aligned graphene sheet-based materials, presenting specific morphology, dimensions, and boron doping levels have shown improved performances for both qualitative...
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Carbon nanowalls: A new versatile graphene based interface for laser desorption/ionization-mass spectrometry detection of small compounds in real samples.
PublicationCarbon nanowalls, vertically aligned graphene nanosheets, attract attention owing to their tunable band-gap, high conductivity, high mechanical robustness, high optical absorbance and other remarkable properties. In this paper, we report for the first time, the use of hydrophobic boron-doped carbon nanowalls (CNWs) for laser desorption/ionization of small compounds and their subsequent detection by mass spectrometry (LDI-MS). The...
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Laser Welding of UNS S33207 Hyper-Duplex Stainless Steel to 6061 Aluminum Alloy Using High Entropy Alloy as a Filler Material
PublicationThe high entropy alloy (HEA) filler used during the fabrication method determines the reliability of HEAs for steel-aluminum dissimilar alloy configuration. HEAs have a direct impact on the formation of intermetallic compounds (IMC) formed by the interaction of iron (Fe) and aluminum (Al), and influence the size of the joint’s interaction zone. A novel welding process for Fe-Al alloy joints was developed to prevent the development...
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Effects of Micro-Arc Oxidation Process Parameters on Characteristics of Calcium-Phosphate Containing Oxide Layers on the Selective Laser Melted Ti13Zr13Nb Alloy
PublicationTitania-based films on selective laser melted Ti13Zr13Nb have been formed by micro-arc oxidation (MAO) at different process parameters (voltage, current, processing time) in order to evaluate the impact of MAO process parameters in calcium and phosphate (Ca + P) containing electrolyte on surface characteristic, early-stage bioactivity, nanomechanical properties, and adhesion between the oxide coatings and substrate. The surface...
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Dosimetry study of Re-188 liquid balloon for intravascular brachytherapy using polymer gel dosimeters and laser-beam optical CT scanner
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Influence of Ni ion site occupancy on laser induced third harmonic generation (THG) studies in Li2SO4–MgO–P2O5 amorphous system
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<title>Cavity digital control testing system by Simulink step operation method for TESLA linear accelerator and free electron laser</title>
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Images revealing the effect of local femtosecond laser ablation of conductive poly(lactic acid) 3D printed electrodes
Open Research DataThe dataset reveals the images of the femtosecond laser (FSL) ablation at the surface of commercially available carbon black-filled poly(lactic acid) 3D printed electrode. The process is used for the increase of the charge transfer of this electrode in electrochemical studies.
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<title>Cavity simulator and controller for VUV free electron laser SIMCON 2.1, part III: I/O ports and measurement results</title>
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Laser
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Mechanical Properties and Residual Stress Measurements of Grade IV Titanium and Ti-6Al-4V and Ti-13Nb-13Zr Titanium Alloys after Laser Treatment
PublicationNowadays, surface engineering focuses on research into materials for medical applications. Titanium and its alloys are prominent, especially Ti-6Al-4V and Ti-13Nb-13Zr. Samples made of pure grade IV titanium and the titanium alloys Ti-6Al-4V and Ti-13Nb-13Zr were modified via laser treatment with laser beam frequency f = 25 Hz and laser beam power P = 1000 W during a laser pulse with duration t = 1 ms. Subsequently, to analyze...
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Modes of Failure Analysis in Reinforced Concrete Beam Using Laser Scanning and Synchro-Photogrammetry - How to apply optical technologies in the diagnosis of reinforced concrete elements?
PublicationThe following paper reveal the limitations and possibilities of terrestrial laser scanning technology adaptation in diagnostics of reinforced concrete beams. In this paper, authors present potential spectrum of TLS use in modes of failure analysis of R-C beams and determines under which conditions the laser technologies might be applied. Research was carried out at the Regional Laboratory of Structural Engineering at Gdansk University...
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SU-FF-T-192: Complete 3D QA for Rapid Arc Using BANG Polymer Gel and OCTOPUS-IQ Fast Laser CT Scanner
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Improving osteoblasts cells proliferation via femtosecond laser surface modification of 3D-printed poly-ε-caprolactone scaffolds for bone tissue engineering applications
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High-Throughput Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry as an Alternative Approach to Monitoring Drug Resistance of Hepatitis B Virus
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Automated Analysis of Images from Confocal Laser Scanning Microscopy Applied to Observation of Calcium Channel Subunits in Nerve Cell Model Line Subjected Electroporation and Calcium
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Morfologia warstw na bazie kobaltu napawanych plazmowo z zastosowaniem różnych technologii procesu.Morphology of the kobalt base laser produced by PTA method using the different technology.
PublicationPrzeanalizowano wpływ różnych parametrów napawania laserowego na morfologię i twardość warstwy otrzymanej z jednego proszku na bazie kobaltu. Stwierdzono różnice zarówno w budowie jak i twardości wytworzonych warstw.
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3D modelling of beach topography changes caused by the tombolo phenomenon using terrestrial laser scanning (TLS) and unmanned aerial vehicle (UAV) photogrammetry on the example of the city of Sopot
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Combination of terrestrial laser scanning and UAV photogrammetry for 3D modelling and degradation assessment of heritage building based on a lighting analysis: case study—St. Adalbert Church in Gdansk, Poland
PublicationThe construction of the St. Adalbert Church in Gdansk dates to 1310. It is a church of rich history and great historical value, and its care is challenging. In this study, the combination of unmanned aerial vehicle (UAV) photogrammetry and terrestrial laser scanning (TLS) was used to accurately build a 3D model of the church. Together with the collected historical inventory documentation, the historic building information model...
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X-ray photoelectron spectroscopy, Raman and photoluminescence studies on formation of defects in Cu:ZnO thin films and its role in nonlinear optical features
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Experimental generation of complex noisy photonic entanglement
PublicationWe present an experimental scheme based on spontaneous parametric down-conversion to produce multiple-photon pairs in maximally entangled polarization states using an arrangement of two type-I nonlinear crystals. By introducing correlated polarization noise in the paths of the generated photons we prepare mixed-entangled states whose properties illustrate fundamental results obtained recently in quantum information theory, in particular those...
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Laser stimulated third harmonic generation studies in ZnO–Ta 2 O 5 –B 2 O 3 glass ceramics entrenched with Zn 3 Ta 2 O 8 crystal phases
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Pulsed Laser Deposition
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Lasery w medycynie - 2022/2023
e-Learning CoursesLasery w medycynie: 1 st. 6 sem. IBM
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Lasery w medycynie - 2023/2024
e-Learning CoursesLasery w medycynie: 1 st. 7 sem. IBM
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Chłodzenie materii laserem
PublicationW artykule pokrótce przedstawione zostały podstawy systemów chłodzących wykorzystujących promieniowanie laserowe w stanie gazowym i w ciele stałym. Realizacja takich systemów chłodzących pozwala na osiąganie temperatur bliskich zera bezwzględnego oraz budowę niewielkich, przenośnych systemów chłodniczych. Urządzenia te bazują na najnowszych osiągnięciach nauki i reprezentują niezwykle wysokie zaawansowanie techniczne oraz technologiczne....
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SU‐E‐T‐472: Characterization of the Very High Energy Electrons, ISO ‐ 250 MeV (VHEE) Beam Generated by ALPHA‐X Laser Wakefield Accelerator Beam Line for Utilization in Monte Carlo Simulation for Biomedical Experiment Planning
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Non-linear optical study of hierarchical 3D Al doped ZnO nanosheet arrays deposited by successive ionic adsorption and reaction method
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Strategic improvement of second and third harmonic generation in multifunctional Cu-Sn-S3 ternary semiconducting thin films
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Liquid crystal thermography and true-colour digital image processing
PublicationW ostatnich latach termografia ciekłokrystaliczna i komputerowa analiza kolorowych obrazów jest z powodzeniem stosowana w technikach nieinwazyjnych, badaniach i aplikacjach przemysłowych i medycznych. W artykule przedstawiono historię tej techniki, opisano główne metody i narzędzia oraz pokazano szereg przykładów zastosowania.
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Studies on Function of P-Glycoprotein in Photodynamic Therapy of Endometriosis
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Multiresistant Strains Are as Susceptible to Photodynamic Inactivation as Their Naïve Counterparts: Protoporphyrin IX-Mediated Photoinactivation Reveals Differences Between Methicillin-Resistant and Methicillin-SensitiveStaphylococcus aureusStrains
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The Connection Betweenagrand SCCmecElements ofStaphylococcus aureusStrains and Their Response to Photodynamic Inactivation
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Optical activity and electro-optic effect of l-arginine doped KDP single crystals
PublicationWe have used the modified polarimetric methods to study optical activity (OA) in the potassium dihydrogenphosphate (KDP) crystals doped with 0.7, 1.4 and 3.8 wt% L-arginine (L-arg) amino acid. Crystals were grown by the temperature reduction method. Small changes of the absolute eigen waves ellipticity and OA values in doped crystals were noted. We have experimentally determined the signs of OA in the [1 00] and [01 0] directions...
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Technika laserowa - 2021/2022
e-Learning CoursesTechnika laserowa: 1 st. 6 sem. EiT, strumień Elektronika
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Technika laserowa - 2022/2023
e-Learning CoursesTechnika laserowa: 1 st. 6 sem. EiT, strumień Elektronika
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Technika laserowa 2022/2023
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Technika Laserowa 2023/2024
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Technika laserowa - 2023/2024
e-Learning CoursesTechnika laserowa: 1 st. 6 sem. EiT, strumień Elektronika
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Techika Laserowa 2023/2024
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Niskotemperaturowe przetapianie laserem biostopów tytanu.
PublicationPrezentowane są założenia nowego projektu badawczego, polegającego na nadtapianiu biostopów tytanu laserem dużej mocy w temperaturze ciekłego azotu.
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Usuwanie odblasków linii laserowej
PublicationW nowoczesnych zrobotyzowanych systemach produkcyjnych coraz częściej stosuje się różnego rodzaju czujniki montowane na ramieniu robota, umożliwiające automatyczne rozpoznawanie położenia i kształtu obiektów znajdujących się w polu roboczym. Pozwala to na adaptacyjne dostosowywanie procesu technologicznego do zaistniałej sytuacji. Wyposażając robota w kamerę oraz linijkę laserową możliwe jest stworzenie zrobotyzowanego skanera...
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Mikroobróbka materiałów za pomocą femtosekundowych impulsów laserowych
PublicationW niniejszym artykule omówiono tematykę laserowej mikroobróbki materiałów, wykorzystującej ultrakrótkie impulsy laserowe. Zaprezentowano podstawowe zagadnienia oddziaływania promieniowania laserowego z materią, w tym zjawisko ablacji laserowej, a także zaproponowano układ eksperymentalny i wyszczególniono potencjalne zastosowania mikroobróbki. Pokrótce omówiono też zalety zastosowania specyficznego modelu lasera femtosekundowego...
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Optyka i Technika Laserowa 22/23
e-Learning CoursesOptyka i Technika Laserowa (Fizyka stosowana/Inżynieria odnawialnych źródeł energii - 5 semestr)