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Single molecule dynamic force spectroscopy of alginate-epimerase interactions using optical tweezers
(Master thesis, 2012)Alginate, a naturally occurring polysaccharide found in various cell lines, is synthesized as a homopolymer polymannuronic acid also known as mannuronan or PolyM. Conversion of the polymers subunits β-D-mannuronic acid (M) ... -
Prediction of seakeeping abilities for the free-fall lifeboat FF1200
(Master thesis, 2012)In this thesis we have investigated seakeeping properties of Star CCM+. Star CCM+ is hoped to be used for simulations of the initial sailing phase of UMOE Schat Harding's new free fall lifeboat FF1200. It is a critical ... -
Reversal and termination of current-induced domain wall motion via magnonic spin-transfer torque
(Journal article; Peer reviewed, 2012)We investigate the domain wall dynamics of a ferromagnetic wire under the combined influence of a spin-polarized current and magnonic spin-transfer torque generated by an external field, taking also into account Rashba ... -
Parallel Integration of Aligned Carbon Strings in Polymer Matrix: Dielectrophoretic Preparation, Electrical and Electromechanical Characterisation
(Master thesis, 2012)Carbon black particles have been aligned into string-like assemblies by dielectrophoresis. Particles were dispersed in Dymax Ultra Light-Weld 3094 oligomermixture, with 0.1 vol.% filler content. This mixture was spread ... -
Experimental Studies of Flow- and Electric Properties of Oil Droplets Including Suspended Clay Particles
(Master thesis, 2012)Experiments on oil droplets made of silicone oil and sodium-fluorohectorite (Na-Fh) clay particles suspended in castor oil were performed. The electric field (E-field)-induced structuring of clay particles placed inside ... -
International Society for Extracellular Vesicles: first annual meeting, April 17-21, 2012, ISEV-2012
(Journal article; Peer reviewed, 2012)Extracellular micro- and nano-scale membrane vesicles produced by different cells are recognized as an essential entity of physiological fluids in a variety of organisms and function as mediators of intercellular communication ... -
Experimental Studies of Instabilities Near the Sol-Gel Transition
(Master thesis, 2012)This master thesis presents a new experimental way to dynamically determinerheological properties of a complex fluid. The fluid investigated is asuspension of the synthetic clay mineral laponite of 3 wt%. This is mixedtogether ... -
Field Theory at finite Temperature and Density: Applications to Quark Stars
(Master thesis, 2012)Abstract:In this thesis we will consider different thermal field theories, and derive an equation of state for deconfined matter.This equation of state will be used in the Tolman-Oppenheimer-Volkoff (TOV)-equations to ... -
Probing defects in Al-Mg-Si alloys using muon spin relaxation
(Journal article; Peer reviewed, 2012)Muon spin methods are very sensitive to nanoscale defects such as trace elements and vacancies in metals. This sensitivity is required when investigating Al-Mg-Si alloys, a complicated system in which diffusion-controlled ... -
Kerr-Lens Mode-locked Cr:ZnS Laser
(Chapter, 2012)The first Kerr-Lens mode-locked Cr:ZnS laser generates the shortest and highest-energy mid-IR near transform-limited pulses of 69 fs duration at 550 mW output power. The 3.7 nJ pulses have 193 nm wide spectrum around 2.39 µm -
Precipitate Structure Changes during Overaging in an Al-Mg-Si Alloy
(Master thesis, 2012)Starting from a super saturated solid solution and two different conditions withβ′′ precipitates (T6) an Al-Mg-Si alloy was heat treated at 200◦C and investigated byhardness measurements. One of the T6 conditions was ... -
Structural properties of Ge doped multicrystalline Silicon wafers and Solar cells
(Master thesis, 2012)The efficiency of multi crystalline silicon solar cells is around 17% but the theoretical limit is 33,7 %. Impurities and dislocations are the main sources for degradation of the solar cell efficiency, especially the ... -
Study of Satellite and GroundUV Index: Climatology andEffects of GeophysicalParameters
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:177, Doctoral thesis, 2012)This thesis presents UV index (UVI) comparison between the AURA-OMI satellite and ground measurements using Norwegian and Nepalese UV Network data for the coincident measurements (Paper I and III). Influencing parameters ... -
Gold and Platinum Surface Nanostructures on Highly Oriented Pyrolytic Graphite
(Master thesis, 2012)Self-assembled platinum and gold nanostructures, which are formed by evaporation and subsequent diffusion limited aggregation of metal on highly oriented pyrolytic graphite, have been studied by photoemission spectroscopy ... -
Reversal of the negative natural aging effect in Al-Mg-Si alloys
(Journal article, 2012)The effect of solute clustering on subsequent precipitation has been investigated for three different Al–Mg–Si alloys with similar Mg/Si ratios but different Mg + Si contents. Hardness measurements were carried out (i) ... -
Spin-flip scattering and critical currents in ballistic half-metallic d-wave Josephson junctions
(Journal article, 2012)We analyze the dc Josephson effect in a ballistic superconductor/half-metal/superconductor junction by means of the Bogoliubov–de Gennes equations. We study the role of spin-active interfaces and compare how different ... -
Femtosecond SESAM-modelocked Cr:ZnS laser
(Journal article; Peer reviewed, 2012)We report self-starting femtosecond operation of a 180-MHz SESAM-controlled prismless Cr:ZnS laser around 2400 nm at open air and room temperature. Dispersion compensation was achieved by a combination of bulk materials ... -
Density Functional Theory Studies of Electronic and Optical Properties of ZnS Alloyed with Mn and Cr
(Master thesis, 2012)We have presented density functional theory calculations of electronic and optical properties of ZnS, MnS, CrS, and effects of Mn and Cr impurities on electronic properties of pure ZnS using the periodic program BAND. In ... -
Clay alignment in electric fields
(Journal article; Peer reviewed, 2012)The response of rotational alignment of lithium fluorohectorite (Li-Fh) to an external electric field has been studied by employing image analysis. Large aggregates consisting of many single clay particles were prepared ... -
Calculation of Terminal Currents in Single Photon Excited Avalanche Photodiodes.
(Master thesis, 2012)We use the Shockley-Ramo (SR) theorem to calculate terminal currents in single photon excited APDs. A unified notation for the SR theorem is introduced, and we derive the theorem in those particular ways found useful for ...