Browsing Institutt for fysikk by Title
Now showing items 1620-1639 of 2677
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Octave-spanning Supercontinuum From As2S3-silica Double-nanospike Waveguide Pumped by Femtosecond Cr:ZnS Laser at 2.35 μm
(Chapter, 2015)We generate a 1.2 to 3.6 μm supercontinuum using a As2S3-silica double-nanospike waveguide pumped by femtosecond Cr:ZnS laser. Varying the core diameter allows the group velocity dispersion to be fine-tuned, thus maximizing ... -
Octoxy capped Si nanoparticles synthesized by homogeneous reduction of SiCl4 with crown ether alkalide
(Journal article; Peer reviewed, 2014)Blue-green luminescent octoxy capped Si nanoparticles were synthesized via homogeneous reduction of SiCl4 with the crown ether alkalide K+(15-crown-5)2K− in tetrahydrofuran. The Si nanoparticles were characterized with ... -
Odd-frequency superconductivity
(Journal article; Peer reviewed, 2019)This article reviews odd-frequency (odd-ω) pairing with focus on superconducting systems. Since Berezinskii introduced the concept of odd frequency order in 1974 it has been viewed as an exotic and rarely occurring in ... -
Oil dispersions of nano-layered silicates in an external electric field: An experimental study
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:218, Doctoral thesis, 2006)The work in this thesis concerned with the experimental study of structural morphologies and rheological properties of chains and/or- column like-structures of electrorheological (ER) fluids of 2:1 synthetic nano-layered ... -
Oil Spill Contingency and Response Modelling in Ice-Covered Waters
(Chapter, 2018) -
On dark atoms, massive dark photons and millicharged sub-components
(Peer reviewed; Journal article, 2020)We present a simple model of two dark matter species with opposite millicharge that can form electrically neutral bound states via the exchange of a massive dark photon. If bound state formation is suppressed at low ... -
On determining the Poisson's ratio of viscoelastic polymer microparticles using a flat punch test
(Journal article; Peer reviewed, 2017)Microscopic spherical polymer particles are increasingly used in a wide range of areas, including pharmacy, physics and microelectronics. For most of the applications a precise knowledge of the mechanical properties is ... -
On Effective Degrees of Freedom in the Early Universe
(Journal article; Peer reviewed, 2016)We explore the effective degrees of freedom in the early Universe, from before the electroweak scale at a few femtoseconds after the Big Bang until the last positrons disappeared a few minutes later. We look at the established ... -
On functional imaging and treatment planning for biologically adapted radiotherapy
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:65, Doctoral thesis, 2012)Tumours show large variations in response to radiotherapy, both across tumour types and within individual tumours. One way to counteract radioresistance is to increase the radiation dose to resistant regions by so-called ... -
On intermetallic phases formed during interdiffusion between aluminium alloys and stainless steel
(Peer reviewed; Journal article, 2022)One of the major challenges in welding of aluminium (Al) alloys and steels is the growth of brittle intermetallic phases, which depends on the thermomechanical processing history and the alloying elements. This work focuses ... -
On Soot Sampling: Considerations when Sampling for TEM Imaging and Differential Mobility Spectrometer
(Journal article; Peer reviewed, 2019)Particulate matter (PM) has been sampled from a compression ignition engine using a differential mobility spectrometer (Cambustion DMS 500) and for imaging in a transmission electron microscope (TEM) with the aim of coupling ... -
On the Atomic Structure of the β′′ Precipitate by Density Functional Theory
(Peer reviewed; Journal article, 2023)The substitution of elements into the precipitate in the 6xxx-series of aluminium alloys is an interface sensitive problem. The strain caused by the misfit between the precipitate and the matrix interacts with the size ... -
On the biogenicity of Fe-oxyhydroxide filaments in silicified low-temperature hydrothermal deposits: Implications for the identification of Fe-oxidizing bacteria in the rock record
(Journal article; Peer reviewed, 2019)Microaerophilic Fe(II)‐oxidizing bacteria produce biomineralized twisted and branched stalks, which are promising biosignatures of microbial Fe oxidation in ancient jaspers and iron formations. Extracellular Fe stalks ... -
On the Design of Accurate Spatial and Temporal Temperature Measurements in Sea Ice
(Master thesis, 2012)Studies on sea ice have become increasingly popular among researchers in the last decades, due to its effect on the global climate and the challenges it presents for arctic engineering. The research is in demand of reliable ... -
On the determination of mechanical properties of aqueous microgels-towards high-throughput characterization
(Journal article; Peer reviewed, 2021)Aqueous microgels are distinct entities of soft matter with mechanical signatures that can be different from their macroscopic counterparts due to confinement effects in the preparation, inherently made to consist of more ... -
On the formation mechanism of Ba0.85Ca0.15Zr0.1Ti0.15O3 thin films by aqueous chemical solution deposition
(Journal article; Peer reviewed, 2020)Here we report on the development of an environmentally friendly, simple and robust aqueous chemical solution route for the fabrication of Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) thin films. Using a stable aqueous precursor solution, ... -
On the microstructural origins of improvements in conductivity by heavy deformation and ageing of Al-Mg-Si alloy 6101
(Peer reviewed; Journal article, 2021)This work has examined an Al-0.54Mg-0.38Si (at.%) conductor alloy (6101) subjected to two different thermomechanical processing routes. Conventional solution treatment, quenching, and artificial ageing (170 °C) was compared ... -
On the model-dependence of the relation between minimum-bias and inelastic proton-proton cross sections
(Peer reviewed; Journal article, 2011)The model-dependence of the relation between the inelastic and various minimum-bias proton–proton cross sections is analyzed, paying a special attention to the sensitivity of minimum-bias triggers to diffractive collisions. ... -
On the properties of La0.7Sr0.3MnO3 thin films on (001) SrTiO 3 substrates
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:288, Doctoral thesis, 2012)The performance of spintronic devices are heavily dependent on both the static and dynamic magnetic properties of both their functional interfaces and bulk properties. In this thesis work we study the stoichiometry, ... -
On the Simulation of Electromagnetic Wave Scattering by Periodic and Randomly Rough Layered Structures based on the Reduced Rayleigh Equations: Theory, numerical analysis and applications
(Doctoral theses;2018:306, Doctoral thesis, 2018)A great number of natural phenomena that we observe, as well as numerous man-made objects we use in our everyday life, are made possible thanks to the interaction between light and matter. In particular, when light is ...