Browsing Institutt for materialteknologi by Title
Now showing items 811-830 of 1545
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L-DOPA-Coated Manganese Oxide Nanoparticles as Dual MRI Contrast Agents and Drug-Delivery Vehicles
(Journal article; Peer reviewed, 2016)Manganese oxide nanoparticles (MONPs) are capable of time-dependent magnetic resonance imaging contrast switching as well as releasing a surface-bound drug. MONPs give T2/T2* contrast, but dissolve and release T1-active ... -
La0.2Sr0.8Fe0.8Ta0.2O3 (-) (delta) based thin film membranes with surface modification for oxygen production
(Journal article; Peer reviewed, 2012)High temperature dense ceramic membranes made from mixed ionic/electronic conducting perovskite ceramics represent a high potential as a reliable source for oxygen and syngas production. In this work, La0.2Sr0.8Fe0.8Ta0.2O3 ... -
LaNi5-assisted hydrogenation of MgNi2 in the hybrid structures of La1.09Mg1.91Ni9D9.5 and La0.91Mg2.09Ni9D9.4
(Journal article; Peer reviewed, 2015)This work focused on the high pressure PCT and in situ neutron powder diffraction studies of the LaMg2Ni9-H2 (D2) system at pressures up to 1,000 bar. LaMg2Ni9 alloy was prepared by a powder metallurgy route from the LaNi9 ... -
Late-magmatic immiscibility during batholith formation: assessment of B isotopes and trace elements in tourmaline from the Land’s End granite, SW England
(Peer reviewed; Journal article, 2015)Quartz–tourmaline orbicules are unevenly distributed in the roof segment of the Land's End granite, SW England. This study shows that the orbicules formed from an immiscible hydrous borosilicate melt produced during the ... -
Lattice distortion induced site dependent carbon gettering at twin boundaries in silicon
(Journal article; Peer reviewed, 2017)The interactions between substitutional carbon atoms and S3 {111}, S9 {221}, and S27 {552} twin boundaries (TB) in silicon were investigated by first-principles calculations. The preferential segregation sites and segregation ... -
Lattice rotations in precipitate free zones in an Al-Mg-Si alloy
(Journal article; Peer reviewed, 2018)Scanning precession electron diffraction and automated crystal orientation mapping in a transmission electron microscope (TEM) have been applied to quantitatively study the crystal orientation of precipitate free zones ... -
Lattice thermal conductivity of TixZryHf1−x−yNiSn half-Heusler alloys calculated from first principles: Key role of nature of phonon modes
(Journal article; Peer reviewed, 2017)In spite of their relatively high lattice thermal conductivity κℓ, the XNiSn (X=Ti, Zr, or Hf) half-Heusler compounds are good thermoelectric materials. Previous studies have shown that κℓ can be reduced by sublattice ... -
Layer continuity in accumulative roll bonding of dissimilar material combinations
(Journal article; Peer reviewed, 2013)Strips were made by accumulative roll bonding of up to 64 alternating layers of an AA3103 alloy and either commercial purity copper or CuZn20 brass as the second type of layer. With increasing number of accumulative roll ... -
Leaching and Precipitation Experiments Related to the Pedersen Process
(Master thesis, 2019)Store mengder avfall rødslam generes fra produksjon av metallurgisk aluminiumoksid via den nåværende kommersielle Bayer prosessen. Deponering av avfallet byr på miljøutfordringer. Alternativt kan aluminiumoksid produseres ... -
Leaching characteristics and mechanism of the synthetic calcium-aluminate slags for alumina recovery
(Journal article; Peer reviewed, 2019)The leaching characteristics and mechanism of synthetic CaO-Al2O3 slags in alkaline solution at atmospheric pressure have been studied. The purpose of the study is to have a better understanding of the leaching part of the ... -
Leaching kinetics and mechanism of slag produced from smelting-reduction of bauxite for alumina recovery
(Peer reviewed; Journal article, 2020)In the present study, we investigate the kinetics and mechanism of the leaching of calcium aluminate slag in Na2CO3 solution for alumina recovery. The slag consists of leachable phases, e.g., 12CaO·7Al2O3, CaO·Al2O3, ... -
Lead-Free Ferroelectric KNN Films for Biomedical Applications
(Doctoral theses at NTNU;2020:246, Doctoral thesis, 2020)Ferroelectric materials are utilized in a wide range of different electronic devices throughout our modern society, including all kinds of consumer electronics, ultrasound equipment, minimally invasive surgical tools and ... -
Lead-Free Ferroelectric Materials based on BiFeO3 and Bi0.5K0.5TiO3
(Doctoral thesis at NTNU;2015:180, Doctoral thesis, 2015)Blyfrie ferroelektriske materialer basert på BiFeO3 og Bi0.5K0.5TiO3 Ferroelektriske materialer finnes i dag i nesten all elektronikk, inkludert forbrukerelektronikk, som for eksempel blekk-printere, mobiltelefoner og ... -
Lead-free piezoelectric Materials based on Silver Niobate
(Master thesis, 2013)Studies done on base material AgNbO3 reveals that a large polarization, which is comparable to values reported for PZT, occurs under application of a high electric field. Density functional calculations show that solid ... -
Lead-free piezoelectric materials for medical application
(Master thesis, 2018)In this work, K0.5Na0.5NbO3, (KNN) and K0.495Na0.495Ca0.005NbO3 thin films for biomedical applications have been prepared from an aqueous precursor solutions with 2.5 or 5.0 mol% of alkali excess. Ca2+ was introduced as ... -
Lead-Free Relaxor-Like 0.75Bi(0.5)K(0.5)TiO(3)-0.25BiFeO(3) Ceramics with Large Electric Field-Induced Strain
(Journal article; Peer reviewed, 2012)Dense and phase-pure ferroelectric ceramics of 75 mol.% Bi0.5K0.5TiO3 – 25 mol.% BiFeO3 are prepared by the conventional solid state reaction method. Their crystal structure is analyzed and discussed. The dielectric and ... -
Life cycle assessment of an offshore grid interconnecting wind farms and customers across the North Sea
(Journal article; Peer reviewed, 2014)This study aims to contribute to an improved understanding of the environmental implications of offshore power grid and wind power development pathways. To achieve this aim, we present two assessments. First, we investigate ... -
Life Cycle Assessment of Body-in-White Produced from Recycled Aluminum
(Master thesis, 2014)The secondary production of aluminum has a large potential in terms of energy savings compared to primary production. Due to the increasing use of aluminum in products, there is a larger demand for aluminum than can be ... -
Life cycle greenhouse gas emission analysis of single-family Norwegian Zero Emission pilot Buildings and concepts
(Doctoral theses at NTNU,2017:359, Doctoral thesis, 2017)Can a life cycle single-family Zero Emission Building (ZEB-OM) be achieved in Norway? What have we learned from designing and building single-family Zero Emission pilot Buildings with respect to greenhouse gas (GHG) emission ... -
Lifetime degradation in n-type Cz-Si
(Master thesis, 2012)The main object was to investigate the effect of donors, thermal donors and defects on the lifetime on n-type Czochralsky (Cz) silicon. Cz is a technique for making monocrystals by dipping a monocrystalline seed into the ...