Browsing Institutt for fysikk by Issue Date
Now showing items 601-620 of 2680
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Phase stabilization principle and precipitate-host lattice influences for Al-Mg-Si-Cu alloy precipitates
(Journal article, 2014)In this work, we seek to elucidate a common stabilization principle for the metastable and equilibrium phases of the Al–Mg–Si–Cu alloy system, through combined experimental and theoretical studies. We examine the structurally ... -
Graphene Mode-locked Cr:ZnS Laser with 41 fs Pulse Duration
(Journal article; Peer reviewed, 2014)We report the ultrashort-pulse Cr:ZnS laser mode-locked by graphene-based saturable absorber mirror. Using the combination of bulk material and a chirped mirror, we demonstrate the shortest reported so far mid-IR pulses ... -
Femtosecond Cr:ZnS laser at 2.35 µm mode-locked by carbon nanotubes
(Journal article; Peer reviewed, 2014)We report the solid-state Cr:ZnS laser mode-locked by CNT-based saturable absorber. The absorber was deposited on a protected silver mirror used as a high reflector mirror in a standard 250-MHz cavity with chirped mirror ... -
The effects of quench rate and pre-deformation on precipitation hardening in Al–Mg–Si alloys with different Cu amounts
(Journal article, 2014)The effects of quench rate after solution heat treatment in combination with 1% pre-deformation on precipitation hardening in three Al–Mg–Si alloys have been investigated by transmission electron microscopy and hardness ... -
Experimental Studies of the Two Phase Flow and Monodispersed Pickering Emulsions Stabilized by LaponiteRD in a Microfluidic T- Junction
(Master thesis, 2014)Monodispersed droplets were produced in a microfluidic T-junction by controlling flow rates of dispersed and continuous phases. The space between each droplet was controlled and it was similar between different droplets. ... -
Contact-mediated intracellular delivery of hydrophobic drugs from polymeric nanoparticles
(Journal article; Peer reviewed, 2014)Encapsulation of drugs in nanoparticles can enhance the accumulation of drugs in tumours, reduce toxicity toward healthy tissue, and improve pharmacokinetics compared to administration of free drug. To achieve efficient ... -
Høyttalersimulering med mode-basert metode
(Master thesis, 2014)I denne masteroppgaven er det tatt utgangspunkt i modellering av sirkulære horn ved Modal metode som beskrevet i \cite{Kemp}. Denne metoden er blitt videreutviklet til å fungere for konkave, vibrerende strukturer ved at ... -
Structural investigation of precipitates with Cu and Zn atomic columns in Al-Mg-Si alloys by aberration-corrected HAADF-STEM
(Journal article; Peer reviewed, 2014)Precipitates in Al-Mg-Si alloys with Cu addition (~0.1 wt%) and Zn addition (~1 wt%) were investigated by aberration corrected high angle annular dark field scanning transmission electron microscopy (HAADF-STEM). Most ... -
Titania Thin Films on Gold and Palladium Surfaces: Structure and Properties
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:353, Doctoral thesis, 2014)Motivated by the catalytic properties of titanium dioxide (TiO2), palladium (Pd) and gold (Au) combined with TiO2, growth and properties of TiOx thin films on Au(111), Pd(100) and Pd(111) have been investigated. The TiOx ... -
Hyperspectral Imaging of In Vitro Wound Models from Human Skin
(Master thesis, 2014)In vitro wounds from human skin have been analysed using hyperspectral imaging. The purpose of this research is to use hyperspectral imaging as a diagnosis tool for skin wounds. The imaging period was 22 days. The images ... -
Ceramic Cr:ZnS laser mode-locked by graphene
(Chapter, 2014)We report a high-power graphene mode-locked ceramic Cr:ZnS-laser, producing 3.9 nJ, 140 fs pulses with 45 nm spectral bandwidth at 270 MHz repetition rate, at output power for the first time exceeding 1 W level. -
Observations of gravity wave forcing of the mesopause region during the January 2013 major Sudden Stratospheric Warming
(Journal article; Peer reviewed, 2014)Studies of vertical and interhemispheric coupling during Sudden Stratospheric Warmings (SSWs) suggest that gravity wave (GW) momentum flux divergence plays a key role in forcing the middle atmosphere, although observational ... -
QUANTUM PHASE TRANSITION IN SPIN-ORBIT COUPLED BOSE-EINSTEIN CONDENSATES IN OPTICAL LATTICES OF DIFFERENT GEOMETRIES
(Master thesis, 2014)Mott insulator to superfluid phase transitions and unconventional superfluid phases in spin-orbit coupled Bose-Einstein condensate in one dimensional, square and hexagonal optical lattices are investigated using decoupling ... -
Electroformation of Janus and patchy capsules
(Journal article; Peer reviewed, 2014)Janus and patchy particles have designed heterogeneous surfaces that consist of two or several patches with different materials properties. These particles are emerging as building blocks for a new class of soft matter and ... -
Chiral and deconfinement transitions in a magnetic background using the functional renormalization group with the Polyakov loop
(Journal article; Peer reviewed, 2014)We use the Polyakov loop coupled quark-meson model to approximate low energy QCD and present results for the chiral and deconfinement transitions in the presence of a constant magnetic background B at finite temperature T ... -
Influence of low Cu addition on quench sensitivity in Al-Mg-Si alloys
(Journal article, 2014)Quench sensitivity in two Al-Mg-Si alloys, one Cu-free and the other with low Cu additions (~0.1 wt%), both having the same amounts of other solutes, has been investigated using transmission electron microscopy (TEM) and ... -
Palladium alloy model systems forunderstanding the surface properties of Pd-based membranes and catalysts
(Doctoral Theses at NTNU, 1503-8181; 2014:9, Doctoral thesis, 2014)Palladium has high solubility, permeability and selectivity for hydrogen, thus being a suitable membrane material for hydrogen separation. In addition, palladium is a versatile catalyst with applications in industrial ... -
Matlab Based Music Analyses of Piano Recordings: An Attempt to Connect Quantitative Acoustical Parameters to Subjective Performance Intention
(Master thesis, 2014)Timbre is a well known concept in music and denotes adjectives describing a sound or sound sensation. All instruments possess a characteristic timbre making it possible to distinguish one type of instrument from another. ... -
Scattering of Electromagnetic Waves from Randomly Rough Surfaces with Skewed Height Distributions
(Master thesis, 2014)Research on the scattering of electromagnetic waves from rough surfaces has greatly advanced in the past decades through the access to rigorous numerical simulations. However, most of the research has focused on surfaces ... -
Laser light deformation of microdroplets
(Master thesis, 2014)This masters work describes the deformation of a droplet that is illuminated by a laser beam. The theory for linear fluid mechanical motion of the droplet is discussed. This is combined with Lorenz-Mie scattering. Droplet ...