Blar i NTNU Open på forfatter "Glaum, Julia"
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Aerosol Deposited Piezoelectric Ceramic Coatings for Biomedical Applications
Bentzen, Marcus (Master thesis, 2021)Formålet med denne masteravhandlingen var å utvikle en prosedyre for post-prosessering av aerosol deponert BaTiO3 på 304SUS rustfritt stål og Ti6Al4V legering substrater med mål om å forbedre biomedisinsk funksjonalitet ... -
Anisotropic in-plane dielectric and ferroelectric properties of tensile-strained BaTiO3 films with three different crystallographic orientations
Ræder, Trygve Magnus; Holstad, Theodor Secanell; Nylund, Inger-Emma; Glaum, Julia; Einarsrud, Mari-Ann; Meier, Dennis; Grande, Tor (Peer reviewed; Journal article, 2021)Ferroelectric properties of films can be tailored by strain engineering, but a wider space for property engineering can be opened by including crystal anisotropy. Here, we demonstrate a huge anisotropy in the dielectric ... -
Barium titanate-based bilayer functional coatings on Ti alloy biomedical implants
Poon, Kara Kamen; Schafföner, Stefan; Einarsrud, Mari-Ann; Glaum, Julia (Peer reviewed; Journal article, 2021)Piezoelectric coatings have the ability to functionalise conventional structural materials into responsive devices. Today, piezoelectric coatings have been applied to both rigid and flexible substrates for sensing, actuating, ... -
Biocompatibility of (Ba,Ca)(Zr,Ti)O3 piezoelectric ceramics for bone replacement materials
Poon, Kara; Wurm, Matthias C.; Evans, Donald; Einarsrud, Mari-Ann; Lutz, Rainer; Glaum, Julia (Journal article; Peer reviewed, 2019)Total joint replacement implants are generally designed to physically mimic the biological environment to ensure compatibility with the host tissue. However, implant instability exposes patients to long recovery periods, ... -
Controlling Phase Purity and Texture of K0.5Na0.5NbO3 Thin Films by Aqueous Chemical Solution Deposition
Gaukås, Nikolai Helth; Dale, Silje Marie; Ræder, Trygve Magnus; Toresen, Andreas; Holmestad, Randi; Glaum, Julia; Einarsrud, Mari-Ann; Grande, Tor (Journal article; Peer reviewed, 2019)Aqueous chemical solution deposition (CSD) of lead-free ferroelectric K0.5Na0.5NbO3 (KNN) thin films has a great potential for cost-effective and environmentally friendly components in microelectronics. Phase purity of KNN ... -
Determining fundamental properties from diffraction: Electric field induced strain and piezoelectric coefficient
Hinterstein, Manuel; Lee, Kaiyang; Esslinger, Sophia; Glaum, Julia; Studer, Andrew; Hoffman, Mark John; Hoffmann, Michael (Peer reviewed; Journal article, 2019)Neutron powder diffraction was used in operando to determine the macroscopic strain and piezoelectric coefficient as a function of applied electric field in a technically relevant actuator material. We were able to ... -
Development of Piezoelectric BCZT Ceramics as Electroactive Bone Implant Material
Poon, Kara Kamen (Doctoral theses at NTNU;2020:148, Doctoral thesis, 2020)The functionalisation of current load-bearing bone implant metals with piezoelectric ceramics is envisioned as a novel opportunity for promoting tissue healing and improving the strength of the bone-implant interface through ... -
Development of piezoelectric coatings on metal substrates for biomedical applications - The effect of substrate surface texturing on coating properties
Solum, Marcus Oskar Heggen (Master thesis, 2020)Formålet med denne mastergradsavhandlinga var å undersøke korleis overflateteksturen til Ti6Al4V-substrat påverkar eigenskapane til spinnbelagte, piezoelektiske tynnfilmar av BaTiO3. Dette er viktig frå eit biomedisinsk ... -
Dielectric and piezoelectric properties of barium calcium zirconate titanate ceramics
Johnsen, Elin Hagen (Master thesis, 2019)Det ferroelektriske systemet barium calcium zirconate titanate er av høy interesse for bruk i industrielle applikasjoner på grunn av eksepsjonelt høye piezoelektriske koeffisienter. Videre så utgjør det et interessant ... -
Effect of mechanical depoling on piezoelectric properties of Na0.5Bi0.5TiO3 - xBaTiO3 in the morphotropic phase boundary region
Denis, L; Glaum, Julia; Hoffman, Mark; Daniels, John E.; Hooper, Ryan; Tutuncu, Goknur; Forrester, Jennifer; Jones, Jacob L. (Journal article; Peer reviewed, 2018)The effect of mechanical stress on the direct piezoelectric properties of pre-poled (1 − x)(Na0.5Bi0.5)TiO3–xBaTiO3 (NBT–xBT) in the range 4% ≤ x ≤ 13% was studied in situ using a mechanical load frame. Prior to mechanical ... -
Effect of porosity on the ferroelectric and piezoelectric properties of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 piezoelectric ceramics
Yap, Emily; Glaum, Julia; Oddershede, Jette; Daniels, John E. (Peer reviewed; Journal article, 2018)The ferroelectric and piezoelectric properties of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 (BCZT) ceramics were measured as a function of porosity. Porous BCZT ceramics were fabricated using the sacrificial fugitive technique. Two ... -
Electrical Fatigue Behavior of Ba0. 85Ca0. 15Zr0. 1Ti0. 9O3 Ceramics Under Different Oxygen Concentrations
Pomyai, P; Munthala, D; Sonklin, T; Supruangnet, R; Nakajima, Hironori; Janphuang, P; Dale, Silje Marie; Glaum, Julia; Pojprapai, Soodkhet (Peer reviewed; Journal article, 2020)Fatigue degradation is a significant problem in piezo/ferroelectric materials and their commercial applications. The major causes of electrical fatigue degradation are a domain pinning effect and physical damage such as ... -
Enhanced in-plane ferroelectricity in BaTiO3 thin films fabricated by aqueous chemical solution deposition
Ræder, Trygve Magnus; Bakken, Kristine; Glaum, Julia; Einarsrud, Mari-Ann; Grande, Tor (Journal article; Peer reviewed, 2018)Ferroelectric BaTiO3 is widely used in capacitors, but the low Curie temperature limits a further use of BaTiO3. In this work we present an aqueous chemical solution deposition (CSD) route for BaTiO3 thin films, demonstrating ... -
Epoxy-Based Nanocomposites for High-Voltage Insulation: A Review
Adnan, Mohammed Mostafa; Tveten, Erlend Grytli; Glaum, Julia; Ese, Marit-Helen Glomm; Hvidsten, Sverre; Glomm, Wilhelm; Einarsrud, Mari-Ann (Journal article, 2018)Epoxy nanocomposites, with inorganic oxide nanoparticles as filler, can exhibit novel property combinations, such as enhanced mechanical strength, higher thermal conductivity, increased dielectric breakdown strength, and ... -
Experimental setup for high-temperature in situ studies of crystallization of thin films with atmosphere control
Blichfeld, Anders Bank; Bakken, Kristine; Chernyshov, Dmitry; Glaum, Julia; Grande, Tor; Einarsrud, Mari-Ann (Peer reviewed; Journal article, 2020)Understanding the crystallization process for chemical solution deposition (CSD) processed thin films is key in designing the fabrication strategy for obtaining high-quality devices. Here, an in situ sample environment is ... -
Ferroelectric and dielectric properties of Ca2+-doped and Ca2+-Ti4+ co-doped K0.5Na0.5NbO3 thin films
Gaukås, Nikolai Helth; Glaum, Julia; Einarsrud, Mari-Ann; Grande, Tor (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 ... -
Field Dependent Conductivity of Cyclohexane
Bærug, Håvard (Master thesis, 2020)I dette prosjektet har den feltavhengige ledningsevnen til sykloheksan blitt undersøkt med differensielle ladningsmåler og finite element modellering. Nøyaktige modeller for ledningsevnen til dielektriske materialer vil ... -
Freeze casting of piezoelectric BCZT for biomedical applications
Andersen, Freya Sofia (Master thesis, 2019)Bruken av piezoelektriske keramer som beinimplantat gir muligheten til å forsterke heling av skadet bein gjennom elektrisk stimulering in vivo. På denne måten kan rekonvalesenstiden og sannsynligheten for revisjonsutskiftninger ... -
Frequency dependent polarisation switching in h-ErMnO3
Ruff, Alexander; Li, Ziyu; Loidl, Alois; Schaab, Jakob; Fiebig, Manfred; Cano, Andres; Yan, Zewu; Bourret, Edith; Glaum, Julia; Meier, Dennis; Krohns, Stephan (Journal article; Peer reviewed, 2018)We report an electric-field poling study of the geometric-driven improper ferroelectric h-ErMnO3. From a detailed dielectric analysis we deduce the temperature and frequency dependent range for which single-crystalline ... -
High piezoelectricity by multiphase coexisting point: Barium titanate derivatives
Gao, Jinghui; Ke, Xiaoqin; Acosta, Matias; Glaum, Julia; Ren, Xiaobing (Journal article; Peer reviewed, 2018)BaTiO3-based lead-free piezoelectric materials have long been known as “a mediocre class of piezoelectric materials.” However, they have seen significant renewed interest in recent years ever since the discovery of high ...