A5081803677- Semiconductor materials and devices
- Ion-surface interactions and analysis
- Magnetic confinement fusion research
- Integrated Circuits and Semiconductor Failure Analysis
- Silicon and Solar Cell Technologies
- Fusion materials and technologies
- Diamond and Carbon-based Materials Research
- ZnO doping and properties
- Electronic and Structural Properties of Oxides
- Metal and Thin Film Mechanics
- GaN-based semiconductor devices and materials
- Electron and X-Ray Spectroscopy Techniques
- Semiconductor materials and interfaces
- Semiconductor Quantum Structures and Devices
- Boron and Carbon Nanomaterials Research
- Ga2O3 and related materials
- Plasma Diagnostics and Applications
- Copper-based nanomaterials and applications
- Catalytic Processes in Materials Science
- Thin-Film Transistor Technologies
- Nuclear reactor physics and engineering
- Graphene research and applications
- Nuclear Physics and Applications
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
University of Rijeka
2016-2025
Australian National University
1997-2006
National Synchrotron Radiation Research Center
2006
University of Newcastle Australia
2003
Technion – Israel Institute of Technology
1996-1999
Princeton Plasma Physics Laboratory
1981-1995
Princeton University
1979-1994
SunEdison (United States)
1993
Institute of Physics of the Slovak Academy of Sciences
1987-1989
Czech Academy of Sciences, Institute of Physics
1988
Mechanical cleavage by Scotch tape was the first method to produce graphene and is still widely used in laboratories. However, a critical problem of this extremely low yield. We have tailored ball milling conditions gentle shear forces that high quality boron nitride (BN) nanosheets yield efficiency. The in-plane structure BN has not been damaged as shown near edge X-ray absorption fine measurements. benzyl benzoate acts agent reduce impacts contamination. This applicable any layered...
Calculations have been performed which demonstrate the possibility of operating poloidal divertors at high densities and low temperatures. Ionization recycling neutral gas near divertor neutralizer plate amplifies input particle flux thereby raising plasma density lowering temperature. Low-temperature, high-density operation should reduce erosion rate walls plate, ease pumping requirements in future large tokamaks.
Inspired by the properties of natural chitin, present work provides first solid foundation for growing conformal ultrathin antibacterial films organic chitin through a solvent-free molecular layer deposition (MLD) process. This establishes initial groundwork biomimetic hybrid cuticles combining sugar-type molecules with vapor-phase metal-organic precursors, which we term metallochitins or, more generally, metallosaccharides. The MLD process, featuring mild temperatures and conditions,...
Tungsten trioxide (WO 3 ) is widely known for its technological importance in electrochromic sensors and catalytic devices. The incorporation of hydrogen into WO can strongly influence the material's electrical, optical, structural properties. This study investigates evolution different tungsten oxidation states mechanism oxide reduction polycrystalline thin films induced by low-energy H 2 + irradiation at room temperature. investigation was conducted situ using X-ray photoelectron...
Hydrogen implantation and subsequent thermal annealing is found to result in a well-defined band of cavities Si. This an extremely efficient gettering layer for Cu which also introduced into the near surface Si by ion implantation. Profiling implanted indicates that ∼95% initial 3×1015 cm−2 implant redistributed following at temperature 780 °C from near-surface damaged narrow width ∼1000 Å depth ∼1 μm. Furthermore, between cavity essentially defect-free some contain bulk Cu3Si phase.
Decoration of nitrogen vacancies by oxygen atoms has been studied near-edge X-ray absorption fine structure (NEXAFS) around B K-edge in several boron nitride (BN) structures, including bamboo-like and multi-walled BN nanotubes. Breaking B-N bonds formation under low-energy ion bombardment reduces oxidation resistance structures promotes an efficient oxygen-healing mechanism, full agreement with some recent theoretical predictions. The mixed O-B-N B-O is clearly identified well-resolved peaks...
Recent observations with the Phoenix high-energy neutral injection experiment are described. At densities where electron plasma frequency is greater than ion cyclotron frequency, strong emission at and ½ observed. This interpreted on basis of theory electrostatic instability developed by Harris others. Experimentally, results in scattering ions out transverse direction but so far as can be observed, there no actual loss plasma. Above a density 5 × 108 particles/cm3, accumulation particles...
The evolution of different W oxidation states and the oxide reduction mechanism polycrystalline WO3 thin films, induced by low-energy H2+ bombardment at room temperature, was investigated in situ X-ray photoelectron spectroscopy around 4f O 1s core levels valence band. A hydrogen tungsten bronze is formed beginning process, as evident from development W5+ state creation O–H bonds. With higher H implantation dose, proceeds with H2O gas molecules, whose time correlates cumulative concentration...
We have studied the impact of nanosized grains copper oxides, grown by atomic layer deposition (ALD), on photocatalytic activity thin titanium dioxide (TiO 2 ) films under visible-light irradiation. The size and crystal phase oxide were controlled number ALD cycles. x-ray diffraction photoelectron measurements revealed preferential formation CuO for a small cycles, while Cu O forms preferentially larger efficiency pristine TiO has been enhanced oxide/TiO structures in which do not cover...
Boron nitride nanotubes (BNNTs) have many fascinating properties and a wide range of applications. An improved ball milling method has been developed for high-yield BNNT synthesis, in which metal nitrate, such as Fe(NO3)3, amorphous boron powder are milled together to prepare more effective precursor. The heating the precursor nitrogen-containing gas produces high density BNNTs with controlled structures. chemical bonding structure synthesized precisely probed by near-edge X-ray absorption...
The high-energy part of the proton spectrum at 4\ifmmode^\circ\else\textdegree\fi{} from reaction $\mathrm{D}(n, p)2n$ 14.4 Mev has been analyzed using final-state interaction formalism, taking into account only $n\ensuremath{-}n$ in final state. primary calculated a kind Born approximation. It shown that shape is dependent mostly on scattering length, ${a}_{\mathrm{nn}}$, and by varying good fit to this obtained. From analysis, value...
The protons from the reaction D(n,p)2n are studied for an incident neutron energy of 14.4 Mev, in order to determine existence a final state n-n interaction. A deuterated paraffin target is used, and scattering angles 0 10 deg studied. No conclusions concerning bound dineutron drawn. (T.F.H.)
In this work, omniphobic surfaces are developed by combining chemical etching and surface modification of aluminum. the first step, hierarchical micro/nanostructuring is carried out etching. Thereafter, a perfluoropolyether grafted onto corrugated aluminum substrate, decreasing its free energy turning system omniphobic. The morphology composition characterized. We observed low affinity toward liquids, regardless their nature tension. shows superhydrophobic properties with water contact angle...
Isotopically enriched 10BN nanotubes, shown in the figure, have been produced for first time. Secondary ion mass spectroscopy analysis confirms a high content of 10B nanotubes. The nanotubes are lightweight, excellent mechanical properties, stronger resistance to oxidation than carbon and superior radiation shielding offering multifunctional material with promising space applications.