Blar i Institutt for fysikk på dokumenttype "Journal article"
Viser treff 1-20 av 766
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1 Watt femtosecond mid-IR Cr:ZnS laser
(Journal article; Peer reviewed, 2013)A room-temperature Kerr-Lens modelocked (KLM) Cr:ZnS laser generates <70 fs pulses duration (about eight optical cycles) with 5.6 nJ pulse energy and over 100 nm FWHM spectral width at 105-157 MHz repetition rates. The ... -
2N+4-rule and an atlas of bulk optical resonances of zigzag graphene nanoribbons
(Journal article; Peer reviewed, 2020)Development of on-chip integrated carbon-based optoelectronic nanocircuits requires fast and non-invasive structural characterization of their building blocks. Recent advances in synthesis of single wall carbon nanotubes ... -
3D Maps of Mineral Composition and Hydroxyapatite Orientation in Fossil Bone Samples Obtained by X-ray Diffraction Computed Tomography
(Journal article; Peer reviewed, 2018)Whether hydroxyapatite (HA) orientation in fossilised bone samples can be non-destructively retrieved and used to determine the arrangement of the bone matrix and the location of muscle attachments (entheses), is a question ... -
3D modelling of β'' in Al-Mg-Si: towards an atomistic level ab initio based examination of a full precipitate enclosed in a host lattice
(Journal article, 2014)We extend a first principles based hierarchical multi-scale model scheme for describing a fully coherent precipitate in a host lattice to 3D simulations. As our test system, the needle-shaped main hardening Al–Mg–Si alloy ... -
6.8 W all-fiber supercontinuum source at 1.9-2.5 um
(Journal article; Peer reviewed, 2014)We report a simple method of generating a spectrally flat and high average power spectral density (up to 14 mW/nm) optical supercontinuum in the 1.95–2.5 μm range covering a transparency window of the atmosphere. The ... -
A consistent reduction of the two-layer shallow-water equations to an accurate one-layer spreading model
(Journal article; Peer reviewed, 2019)The gravity-driven spreading of one fluid in contact with another fluid is of key importance to a range of topics. These phenomena are commonly described by the two-layer shallow-water equations (SWE). When one layer is ... -
A correlative spatiotemporal microscale study of calcium phosphate formation and transformation within an alginate hydrogel matrix.
(Journal article; Peer reviewed, 2016)The modification of soft hydrogels with hard inorganic components is a method used to form composite materials with application in non-load-bearing bone tissue engineering. The inclusion of an inorganic component may provide ... -
A high precision method for quantitative measurements of reactive oxygen species in frozen biopsies
(Journal article; Peer reviewed, 2014)Objective: An electron paramagnetic resonance (EPR) technique using the spin probe cyclic hydroxylamine 1-hydroxy-3-methoxycarbonyl-2,2,5,5-tetramethylpyrrolidine (CMH) was introduced as a versatile method for high ... -
A hybrid aluminium alloy and its zoo of interacting nano-precipitates
(Journal article, 2015)An alloy with aluminium as its base element is heat treated to form a multitude of precipitate phases known from different classes of industrial alloys: Al–Cu(–Mg), Al–Mg–Si–Cu, and Al–Zn–Mg. Nanometer-sized needle-shaped ... -
A minimal model for extragalactic high-energy particles
(Journal article; Peer reviewed, 2017)We explain in a unified way the experimental data on ultrahigh energy cosmic rays (UHECR) and neutrinos, using a single source class and obeying limits on the extragalactic diffuse gamma-ray background (EGRB). If UHECRs ... -
A Monte Carlo Algorithm for Immiscible Two-Phase Flow in Porous Media
(Journal article; Peer reviewed, 2017)We present a Markov Chain Monte Carlo algorithm based on the Metropolis algorithm for simulation of the flow of two immiscible fluids in a porous medium under macroscopic steady-state conditions using a dynamical pore ... -
A nano-silicate material with exceptional capacity for CO2 capture and storage at room temperature
(Journal article; Peer reviewed, 2018)In order to mitigate climate change driven by the observed high levels of carbon dioxide (CO2) in the atmosphere, many micro and nano-porous materials are being investigated for CO2 selectivity, capture and storage (CCS) ... -
A Renormalization Group Procedure for Fiber Bundle Models
(Journal article; Peer reviewed, 2018)We introduce two versions of a renormalization group scheme for the equal load sharing fiber bundle model. The renormalization group is based on formulating the fiber bundle model in the language of damage mechanics. A ... -
A review of materials engineering in silicon-based optical fibre
(Journal article; Peer reviewed, 2017)Semiconductor optical fibre technologies have grown rapidly in the last decade and there are now a range of production and post-processing techniques that allow for a vast degree of control over the core material's ... -
A simple way for targeted delivery of an antibiotic: In vitro evaluation of a nanoclay-based composite
(Journal article; Peer reviewed, 2017)The sodium-modified form of fluorohectorite nanoclay (NaFh) is introduced as a potential drug carrier, demonstrating its ability for the controlled release of the broad-spectrum antibiotic Ciprofloxacin through in vitro ... -
AAfrag: Interpolation routines for Monte Carlo results on secondary production in proton–proton, proton–nucleus and nucleus–nucleus interactions
(Journal article; Peer reviewed, 2019)We provide a compilation of predictions of the QGSJET-II-04m model for the production of secondary species (photons, neutrinos, electrons, positrons, and antinucleons) that are covering a wide range of energies of the beam ... -
Ab initio based interface modeling for fully coherent precipitates of arbitrary size in Al alloys
(Journal article, 2013)Multiscale modelling of hardening precipitate interfaces in alloy design This project will develop a new multiscale modelling scheme used to investigate hardening precipitate interfaces in metal alloys. The major aim is ... -
Ab initio interface configuration determination for β″ in Al-Mg-Si: Beyond the constraint of a preserved precipitate stoichiometry
(Journal article; Peer reviewed, 2014)The precipitate-host lattice interface configuration stabilities for the β″ phase in the Al–Mg–Si alloy system have been examined using density functional theory. Usually, the supercell based calculations underlying such ... -
Ab initio study of absorption resonance correlations between nanotubes and nanoribbons of graphene and hexagonal boron nitride
(Journal article; Peer reviewed, 2019)Density functional theory calculations are performed for the electronic band structures and optical absorption spectra of the zigzag nanoribbons and armchair nanotubes of graphene and hexagonal boron nitride as well as ... -
Ab-initio study of atomic structure and mechanical behaviour of Al / Fe intermetallic interfaces
(Journal article; Peer reviewed, 2020)First-principles virtual tensile and shear test calculations have been performed to Al(0 0 )//-AlFeSi(0 0 1) and Al(0 4)//Fe4Al13(1 0 ) interfaces by the ab initio pseudo potential density functional theory method. Work ...