A5049179890- Ion-surface interactions and analysis
- Integrated Circuits and Semiconductor Failure Analysis
- Photorefractive and Nonlinear Optics
- Electron and X-Ray Spectroscopy Techniques
- Glass properties and applications
- Nuclear Physics and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Radiation Therapy and Dosimetry
- Photonic and Optical Devices
- Semiconductor materials and devices
- Fusion materials and technologies
- Metal and Thin Film Mechanics
- Superconducting Materials and Applications
- Silicon and Solar Cell Technologies
- Solid State Laser Technologies
- Nanopore and Nanochannel Transport Studies
- Atomic and Subatomic Physics Research
- Microfluidic and Capillary Electrophoresis Applications
- Brucella: diagnosis, epidemiology, treatment
- Silicon Nanostructures and Photoluminescence
- Metal-Organic Frameworks: Synthesis and Applications
- Particle Accelerators and Free-Electron Lasers
- Force Microscopy Techniques and Applications
- Diamond and Carbon-based Materials Research
- Mechanical and Optical Resonators
Uppsala University
2021-2025
HUN-REN Institute for Nuclear Research
2015-2025
Angstrom Designs (United States)
2025
Semmelweis University
2024
Uzsoki Hospital
2024
University of Debrecen
2019-2022
University of Oslo
2022
Tandem Diabetes Care (United States)
2022
Hungarian Academy of Sciences
1980-2019
Forest Research Institute
2015
A single-section, compact, passive polarization converter has been designed and fabricated on GaAs-AlGaAs. The device uses an optimized waveguide structure with angled-facets to obtain 90/spl deg/-polarization rotation in a single section; this eliminates the need for longitudinal variation hence avoids any section-to-section coupling losses. transverse electric (TE) magnetic (TM) conversion of 96% is achieved length /spl ap/720 μm.
Proton irradiation with a primary ion energy of 2 MeV was used to simulate radiation damage in UN and (U,Zr)N fuel pellets. The pellets, nominally at room temperature, were irradiated peak levels 0.1, 1, 10 dpa 100 resulting hydrogen concentration most 1 at. %. Microstructure mechanical properties the samples investigated compared before after irradiation. induced an increase hardness, whereas decrease Young's modulus observed for both samples. Microstructural characterization revealed...
The use of carbon nanotubes as tips in atomic force microscopy for a systematic study dry etching pattern transfer GaAs is described. samples are patterned via electron beam lithography and then etched using magnetron reactive ion or chemically assisted processing. technique allows diagnosis, air, features with scale sizes <100 nm.
The Scanning Light Ion Microprobe in Uppsala (SLIM-UP) was originally installed during 1989/90. Since then, the microprobe has undergone several minor and major modifications. present configuration is a re-build of SLIM-UP, that now connected to 5 MV tandem Pelletron® accelerator Tandem Laboratory, University. We give an overview status facility, including detailed description components recent resolution test. In addition, we most technical developments whereby, system able quickly image...
The utilization of polarized neutrons is great importance in scientific disciplines spanning materials science, physics, biology, and chemistry. However, state-of-the-art multilayer polarizing neutron optics have limitations, particularly low specular reflectivity polarization at higher scattering vectors/angles, the requirement high external magnetic fields to saturate polarizer magnetization. Here, we show that, by incorporating
High diffraction efficiency optical transmission gratings with quasi-sinusoidal and saw-tooth surface relief profiles were fabricated in Bi12GeO20, Er: LiNbO3 Fe: crystals by ion beam implantation. The directly written nitrogen microbeams at energies of 5 MeV 10.5 MeV. finest grating constant was 4 μm. Grating constants for the majority 16 highest amplitudes reached 1600 nm. first-order obtained a sinusoidal 25%, close to theoretical maximum 33%. blazed also without Littrow optimization....
This study investigates the effects of incorporating 11B4C interlayers into Fe/Si multilayers, with a focus on interface quality, reflectivity, polarization, and magnetic properties for polarized neutron optics. It is found that introduction 1 {\AA} 2 significantly improves sharpness, reducing width preventing excessive Si diffusion Fe layers. X-ray reflectivity measurements show enhanced notable increase in polarization 30 period multilayers. The inclusion also helps prevent formation...
Abstract Background Dental implants are one of the most frequently used medical devices for therapeutic purposes in dentistry. Peri-implantitis is a severe, microbial biofilm-associated condition, characterized by inflammation peri-implant soft tissues and destruction supporting bone. It has been suggested that metal particles originating from implant may influence local host response to biofilms. Methods Soft tissue biopsies were collected sites with without peri-implantitis 21 patients....
In this work, different microfluidic passive mixer devices were designed, simulated and realized. The mixing unit area was functionalized by microstructures, whose shapes layouts designed in the simulations to improve efficiency of chips. It is known that a micro wall array promising tool for device. present length areal density walls varied order find good performance. then created with ion microlithography UV lithography techniques. Mixing test performed from which efficiencies determined....
As a single-phase alloy, CrFeCoNi is face centered cubic (fcc) material related to the archetypical high-entropy Cantor alloy CrFeCoNiMn. For thin films, of approximately equimolar composition tends assume an fcc structure when grown at room temperature by magnetron sputtering. However, solid solution state typically not achieved for films higher temperatures. The same holds true alloy-based ceramics (nitrides and oxides), where phase formation extremely sensitive process parameters such as...
Results of Mycobacterium tuberculosis detection in animals from six Central European countries (Croatia, the Czech Republic, Hungary, Poland, Slovakia and Slovenia) spreading over 610 402 km2 with a population 11.8 million heads cattle were analysed. In monitoring period, 1990 to 1999, M. was isolated only two (Poland Slovak Republic) 16 tuberculous lesions. These comprise nine (Bos taurus), four domestic pigs (Sus scrofa f. domestica) three wild animals, an African elephant (Loxodonta...
The Tandetron Laboratory of the Nuclear Physics Institute Czech Academy Sciences is equipped with five beam lines associated a 3 MV tandem electrostatic accelerator model 4130 MC from High Voltage Engineering Europa B.V. This coupled two duoplasmatron sources and single sputter ion source provides ions hydrogen to gold. One these nuclear microbeam facility, utilizing beams micro- sub-micro sizes for materials research by use particle induced x-ray emission spectroscopy, gamma emission,...
We present an in-situ, depth-resolved and non-destructive approach to assess the chemical composition of titanium nitride (TiN) thin films during synthesis controlled oxidation. Ion beam assisted deposition was used deposit a TiN sample approximately 120 nm thickness. The characterized in environment using Rutherford/Elastic Backscattering Spectrometry (RBS/EBS), with depth resolution ca. 25 nm. high sensitivity measurements non-metallic species ensured by use elastic resonances. Analysis...
Design, fabrication, integration, and feasibility test results of a novel microfluidic cell capture device is presented, exploiting the advantages proton beam writing to make lithographic irradiations under multiple target tilting angles UV lithography easily reproduce large area structures. A demonstrated with unique doubly tilted micropillar array design for manipulation in applications. Tilting pillars increased their functional surface, therefore, enhanced fluidic interaction when...
Insulating glass capillaries have been shown to lead ion transmission without any change in either the charge state or kinetic energy. This surprising process has attributed a self-organized distribution of patches creating necessary guiding electric potential on capillary walls. By use our original electrometer, it possible measure and monitor simultaneously nondestructive way transmitted beam intensity during charging up by an ${\mathrm{Ar}}^{+}$ beam. We show that microcapillaries can...
Abstract We investigated the canopy recovery of 3 tree species (pedunculate oak, Turkey European beech) at two locations in Veszprém county (Western Hungary) after severe defoliation by gypsy moth caterpillars spring 2005. The oak has evidently best potential, and it almost completely replaced lost foliage 4 months. pedunculate beech needed 2 years to reach same level recovery. suffered from a heavy infection Microsphaera alphitoides probably slowed down its Neither presence Agrilus...
A technique to determine the molar concentration of elements in ex vivo tissue sections by Particle Induced X-ray Emission (PIXE) has been developed. The method is based on simultaneous off-axis scanning transmission ion microscopy (OA-STIM) and Elastic Backscattering Spectrometry (EBS) measurement sample thickness major element (H, C, N, O) composition. was applied molarity localised Ca hot-spots outer epithelium nasal mucosa a rhesus macaque subject infected with simian immunodeficiency...