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Fabrication and Characterization of an Intermediate Band Material based on Ion Implantation and Pulsed Laser Melting of Ag in Fz-Si
(Master thesis, 2015)Intermediate band solar cells (IBSCs) are an innovative field of material engineering and their prospect of high efficiency may contribute to meet the demand for new energy alternatives. IBCSs are based on absorption of ... -
Fabrication and Measurements of GaAs Nanowire Array Solar Cell Devices
(Master thesis, 2013)Radial junction p-i-n GaAs nanowire array solar cell (NWASC) devices have been fabricated and optoelectrically measured. Substrates for nanowire (NW) growth were fabricated by electron beam lithography or nanoimprint ... -
Fabrication of a Novel Al/Mg Composite:: Processing and Characterization of Pure Aluminium, Al/AZ31 Alloy Bi-Metal and Aluminium based Sheet Composites by Severe Plastic Deformation
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:318, Doctoral thesis, 2013) -
Fabrication of a Silicon Photonic Crystal Biosensor
(Master thesis, 2014)The research performed in the scope of the master project and described in this thesis is devoted to the study of a two dimensional photonic crystal biosensor in silicon. The band gap of hexagonal photonic crystal slab ... -
Fabrication of Lead-Free Bi0.5Na0.5TiO3 Thin Films by Aqueous Chemical Solution Deposition
(Journal article; Peer reviewed, 2017)Piezoelectric ceramics are widely used in actuator applications, and currently the vast majority of these devices are based on Pb(Zr,Ti)O3 , which constitutes environmental and health hazards due to the toxicity of lead. ... -
Fabrication of lead-free ferroelectric thin films based on Bi0.5Na0.5TiO3 by aqueous chemical solution deposition
(Doctoral theses at NTNU;2017:326, Doctoral thesis, 2017)Since the discovery of piezoelectric ceramic materials in the mid-20th century, piezoelectric materials have become an important research field and is currently used in a whole range of applications such as sensors and ... -
Faceted interfacial structure of {1011} twins in Ti formed during equal channel angular pressing
(Journal article; Peer reviewed, 2010)The boundary structure of {1011} deformation twins formed in commercial pure titanium (CP-Ti) during the initial pass ECAP processing has been studied by TEM and HRTEM. A new twining mode with twinning dislocation of b3/3, ... -
Facile Low Temperature Hydrothermal Synthesis of BaTiO3 Nanoparticles Studied by In Situ X-ray Diffraction
(Journal article; Peer reviewed, 2018)Ferroelectric materials are crucial for today’s technological society and nanostructured ferroelectric materials are important for the downscaling of devices. Controlled and reproducible synthesis of these materials are, ... -
Facile Preparation of Layered Ni(OH)2/Graphene Composite from Expanded Graphite
(Journal article; Peer reviewed, 2017)A layered Ni(OH)2/graphene composite was firstly prepared by electrochemical deposition of nickel nanoparticles between layers of expanded graphite in Ni2+ containing solution, and then the deposited nickel nanoparticles ... -
Facile synthesis of high-performance Ni(OH)2/expanded graphite electrodes for asymmetric supercapacitors
(Journal article, 2017)Cost-effective commercial expanded graphite (EG) was used as a raw material, and a facile in-situ electrodeposition method was adopted to synthesize a layered Ni(OH)2/EG composite electrode in an N,N-dimethylformamide-water ... -
Facile synthesis of nanosized sodium magnesium hydride, NaMgH3
(Journal article; Peer reviewed, 2013)The ternary magnesium hydride NaMgH3 has been synthesised via reactive milling techniques. The method employed neither a reactive H2 atmosphere nor high pressure sintering or other post-treatment processes. The formation ... -
A fast, low temperature synthesis method for hexagonal YMnO3: Kinetics, purity, size and shape as studied by in situ X-ray diffraction
(Peer reviewed; Journal article, 2020)The reaction mechanisms, phase development and kinetics of the hydrothermal synthesis of hexagonal‐YMnO3 from Y2O3 and Mn2O3 using in situ X‐ray diffraction are reported under different reaction conditions with temperatures ... -
Fatigue of Extruded AA6082 and AA7108 Alloys - The Effects of Natural Ageing Compared to Artificial Ageing
(Master thesis, 2015)Heat treatable aluminium alloys might have the potential to gain unexpected increase in mechanical properties when stored at room temperature (natural ageing) after extrusion, for long periods of time. The main aim of the ... -
Fatigue of Welded AA6082 Alloys - Effects of PWHT and Shot Peening
(Master thesis, 2013)Aluminum is a metal widely used in areas such as a construction material in buildings, transportation,oil and gas industry, in packaging for preserving food and drink, electric cables, heatexchangers and many other areas. ... -
FDTD simulations of novel gain media
(Master thesis, 2014)Fourier-Laplace analysis of gain media predicts the existence of novel types of media. In particular it predicts the existence of media refracting positively and negatively at the same time, so-called simultaneous refraction. ... -
Fe and V substituted Li2MnSiO4/C As Potential Cathode Material for Li-Ion Batteries
(Journal article; Peer reviewed, 2015)Lithium transition-metal silicate materials are promising candidates for next generation Li-ion batteries since they allow Li extraction/insertion beyond one Li ion per formula unit. They consist of cheap, non-toxic and ... -
Ferroelasticity, anelasticity and magnetoelastic relaxation in Co-doped iron pnictide: Ba(Fe0.957Co0.043)2As2
(Journal article; Peer reviewed, 2019)The hypothesis that strain has a permeating influence on ferroelastic, magnetic and superconducting transitions in 122 iron pnictides has been tested by investigating variations of the elastic and anelastic properties of ... -
Ferroelectric and dielectric properties of Ca2+-doped and Ca2+-Ti4+ co-doped K0.5Na0.5NbO3 thin films
(Journal article; Peer reviewed, 2020)Chemical solution deposition (CSD) of K0.5Na0.5NbO3 (KNN) thin films on silicon-based substrates is an interesting technology for fabrication of lead-free ferroelectric thin films. Here, we report on improved ferroelectric ... -
Ferroelectric Transitions in SrxBa(1-x)Nb2O6 - Effect of Thermal History on the Functional Properties
(Master thesis, 2015)Many functional materials used in todays electronic equipment have a high content lead. Due to the environmental challenges related to production and usage of such materials, extensive research has been preformed on lead-free ... -
Ferroelectric Tungsten Bronzes
(Doctoral thesis at NTNU;2016:237, Doctoral thesis, 2016)Ferroelectric materials are everywhere in the modern society, from consumer electronics to car engines. Applications cover a whole range of devices such as sensors, actuators and transducers due to their dielectric or ...