Browsing NTNU Open by Author "Einarsrud, Mari-Ann"
Now showing items 101-120 of 196
-
Lead-Free Relaxor-Like 0.75Bi(0.5)K(0.5)TiO(3)-0.25BiFeO(3) Ceramics with Large Electric Field-Induced Strain
Morozov, Maxim; Einarsrud, Mari-Ann; Grande, Tor; Damjanovic, D. (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 ... -
Long term stability testing of oxide unicouple thermoelectric modules
Skomedal, Gunstein; Vehus, Tore; Kanas, Nikola; Singh, Sathya Prakash; Einarsrud, Mari-Ann; Wiik, Kjell; Middleton, Peter Hugh (Journal article; Peer reviewed, 2019)Thermoelectric devices based on oxides are good candidates for energy harvesting technologies for use in aggressive conditions where the materials should withstand high temperatures and corrosive environments over prolonged ... -
Luminescent Eu3+-doped NaLa(WO4)(MoO4) and Ba2CaMoO6 prepared by the modified Pechini method
Sletnes, Malin; Skjærvø, Susanne Linn; Lindgren, Mikael; Grande, Tor; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2016)Modified Pechini synthesis routes were developed for synthesis of the novel red phosphor materials NaLa(WO4)(MoO4):Eu3+ and Ba2CaMoO6:Eu3+. Phase pure NaLa(WO4)(MoO4):Eu3+ was obtained at calcination temperatures ≥600 °C ... -
Luminescent silica-based nanocomposites for detection of liquid organic compounds
Delic, Asmira (Doctoral theses at NTNU;2021:307, Doctoral thesis, 2021)The main aim of this thesis is to prove a concept of a novel detection method for liquid organic compounds (LOCs) based on luminescent nanoparticles (NPs) that can be used in oil-field applications. Before starting an ... -
Magnetic and Stimuli-Responsive Nanoparticles for Environmental and Biomedical Applications
Sharma, Anuvansh (Doctoral theses at NTNU;2021:362, Doctoral thesis, 2021)For the past few decades, nanomaterials have been an integral part of research involving applications in various industries, ranging from pharmaceuticals, electronics, energy, chemical, food, aviation, etc, owing to their ... -
Mechanical and tribological properties of injection molded zirconia-alumina for orthopedic implants
Terrizzi, Anna Rita; Fersini, Maurizio; Contaldi, Vincenzo; Kunjalukkal Padmanabhan, Sanosh; Einarsrud, Mari-Ann; Licciulli, Antonio (Journal article, 2022)Ceramics have gained great attention for hip and knee arthroplasty surgical procedures due to their ability to guarantee long-life performance in patients and are considered an alternative to existing metal systems. In ... -
Mechanisms for texture in BaTiO3 thin films from aqueous chemical solution deposition
Bakken, Kristine; Blichfeld, Anders Bank; Chernyshov, Dmitry; Grande, Tor; Glaum, Julia; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2020)The prototype piezoelectric material BaTiO3 is widely used in e.g., capacitators. Chemical solution deposition (CSD) of BaTiO3 films is a simple and environmentally friendly processing route, but insight in the crystallization ... -
Memristive TiO2: Synthesis, Technologies, and Applications
Illarionov, Georgii A.; Morozova, Sofia M.; Chrishtop, Vladimir V.; Einarsrud, Mari-Ann; Morozov, Maxim (Peer reviewed; Journal article, 2020)Titanium dioxide (TiO2) is one of the most widely used materials in resistive switching applications, including random-access memory, neuromorphic computing, biohybrid interfaces, and sensors. Most of these applications ... -
Mesophase Transitions in [(C2H5)4N][FeBrCl3] and [(CH3)4N][FeBrCl3] Ferroic Plastic Crystals
Walker, Julian; Marshall, Kenneth Paul; Beceiro, Jorge Salgado; Williamson, Benjamin; Løndal, Nora Statle; Castro-Garcia, Socorro; Andújar, Manuel Sánchez; Selbach, Sverre Magnus; Chernyshov, Dmitry; Einarsrud, Mari-Ann (Peer reviewed; Journal article, 2022)Plastic crystals are supramolecular materials that possess a unique high entropy mesophase at elevated temperatures, where a long-range structural symmetry coexists with a local molecular orientational disorder. The ... -
Microstructural and compositional optimization of La0.5Ba0.5CoO3−δ—BaZr1−zYzO3−δ (z=0, 0.05 and 0.1) nanocomposite cathodes for protonic ceramic fuel cells
Rioja-Monllor, Laura; Bernuy-Lopez, Carlos; Fontaine, Marie-Laure; Grande, Tor; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2019)Cathodes are one of the key components of protonic ceramic fuel cells (PCFCs) requiring further development to enhance the performance of PCFCs. This encompasses the optimization of material compositions and microstructures, ... -
Modified Pechini Synthesis of Oxide Powders and Thin Films
Sunde, Tor Olav Løveng; Grande, Tor; Einarsrud, Mari-Ann (Handbook of Sol-Gel Science and Technology;, Chapter; Peer reviewed, 2016)The modified Pechini method has become one of the most popular synthesis methods for complex oxide materials due to its simplicity and versatility. The method can be applied to synthesize nanocrystalline powders, bulk ... -
Modulating acrylic acid content of nanogels for drug delivery & biocompatibility studies
Sharma, Anuvansh; Raghunathan, Karthik; Solhaug, Helene; Antony, Jibin; Stenvik, Jørgen; Asbjørn, Magne; Bandyopadhyay, Sulalit; Einarsrud, Mari-Ann (Peer reviewed; Journal article, 2021)Dual stimuli-responsive nanogels (NGs) have gained popularity in the field of bio medicine due to their versatile nature of applicability. Poly(N-isopropylacrylamide)-co-poly(acrylic acid) (pNIPAm-pAAc)-based NGs provide ... -
Multiferroic, Magnetoelectric Nanoparticles: Lanthanum-substituted Bismuth Ferrite
Hatling, Oddmund (Master thesis, 2011)In this report, 10 at% lanthanum was introduced to the perovskite structure of bismuth ferrite at the expense of bismuth through a modified Pechini wet chemical method. Green body powders were calcined at several temperatures, ... -
Nanopatterning and plasmonic properties of plasma sputtered gold on diatom frustules
Romann, Julien; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2013)Bio-silica nanostructures from diatoms (called frustules) featuring plasmonic gold nanoparticles (NPs) are elaborated using two methods based on plasma sputtering of gold. The first investigated method uses a thermal ... -
Novel synthesis method of BaTiO3-nanoparticles - Synthesis of BaTiO3-nanoparticles by spray-pyrolysis of TiO2-nanoparticles dispersed in Ba(NO3)2-solution
Gryteselv, Magnus (Master thesis, 2016)Ferroelectric materials are widely used in different technological applications. Lead zirconate titanate (PZT) materials are currently the most used, due to their excellent piezoelectric properties and relatively high ... -
Octoxy capped Si nanoparticles synthesized by homogeneous reduction of SiCl4 with crown ether alkalide
Sletnes, Malin; Jerome, Maria; Grande, Tor; Lindgren, Mikael; Einarsrud, Mari-Ann (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 ... -
On the formation mechanism of Ba0.85Ca0.15Zr0.1Ti0.15O3 thin films by aqueous chemical solution deposition
Khomyakova, Evgeniya; Wenner, Sigurd; Bakken, Kristine; Schultheiß, Jan; Grande, Tor; Glaum, Julia; Einarsrud, Mari-Ann (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 Solubility of Bi in Tetragonal Tungsten Bronzes
Zeiger, Caren Regine; Williamson, Benjamin Albert Dobson; Walker, Julian Bradley; Einarsrud, Mari-Ann; Grande, Tor (Peer reviewed; Journal article, 2024)Ferroelectric Pb5Nb10O30 (PN) tetragonal tungsten bronze (TTB) forms solid solutions that exhibit morphotropic phase boundaries (MPBs). Successful replacement of PN with TTBs containing Bi could advance lead-free TTB MPBs. ... -
Optical properties of single diatom frustules revealed by confocal microspectroscopy
Romann, Julien Clement; Valmalette, Jean-Christophe; Røyset, Arne Karstein; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2015)Optical properties of single diatom frustule valves from two different Coscinodiscus species (C. wailesii and C. centralis) are studied by transmission confocal hyperspectral imaging and numerical calculations. Light ... -
Optimisation of chemical solution deposition of Indium Tin Oxide thin films
Sunde, Tor Olav Løveng; Einarsrud, Mari-Ann; Grande, Tor (Journal article; Peer reviewed, 2014-12-31)An environmentally friendly aqueous sol–gel process has been optimised to deposit indium tin oxide (ITO) thin films, aiming to improve the film properties and reduce the deposition costs. It was demonstrated how parameters ...