Blar i NTNU Open på forfatter "Hatzoglou, Constantinos"

Viser treff 1-9 av 9

    • Atomic-scale 3D imaging of individual dopant atoms in an oxide semiconductor 

      Hunnestad, Kasper Aas; Hatzoglou, Constantinos; Zeeshan, Muhammad; Vullum, Per Erik; Yan, Zewu; Bourret, Edith; Van Helvoort, Antonius; Selbach, Sverre Magnus; Meier, Dennis (Peer reviewed; Journal article, 2022)
      The physical properties of semiconductors are controlled by chemical doping. In oxide semiconductors, small variations in the density of dopant atoms can completely change the local electric and magnetic responses caused ...

    • Clustering and Precipitation during Early-Stage Artificial Aging of Al–Si–Mg(–Cu) Foundry Alloys 

      Wenner, Sigurd; Hatzoglou, Constantinos; Mørtsell, Eva Anne; Åsholt, Petter (Peer reviewed; Journal article, 2023)
      High-Si aluminum foundry alloys are an important material class for products with complex 3D geometries where casting is the most suitable production method. With Mg and/or Cu additions, these alloys gain strength upon ...

    • Creep deformation of an additively manufactured nickel-based superalloy 

      Vad, Olav Johansen (Master thesis, 2022)
      To versjoner av en nikkelbasert superlegering ble produsert med additiv tilvirkning og karakterisert etter sigetesting med SEM og atomprobetomografi. De to legeringene ble kalt CB og C da hovedforskjellen i mellom dem var ...

    • Deflecting Dendrites by Introducing Compressive Stress in Li7La3Zr2O12 Using Ion Implantation 

      Flatscher, Florian; Todt, Juraj; Burghammer, Manfred; Søreide, Hanne-Sofie Marie Scisly; Porz, Lukas; Li, Yanjun; Wenner, Sigurd; Bobal, Viktor; Ganschow, Steffen; Sartory, Bernhard; Brunner, Roland; Hatzoglou, Constantinos; Keckes, Jozef; Rettenwander, Daniel (Peer reviewed; Journal article, 2023)
      Lithium dendrites belong to the key challenges of solid-state battery research. They are unavoidable due to the imperfect nature of surfaces containing defects of a critical size that can be filled by lithium until fracturing ...

    • Effect of cyclic ageing on the early-stage clustering in Al–Zn-Mg(-Cu) alloys 

      Shah, Sohail; Thronsen, Elisabeth; Hatzoglou, Constantinos; Wenner, Sigurd; Marioara, Calin Daniel; Holmestad, Randi; Holmedal, Bjørn (Peer reviewed; Journal article, 2022)
      The cyclic application of mechanical stress to aluminum alloys at room temperature, referred to as cyclic ageing, continuously injects vacancies, enabling dynamic precipitation of a fine distribution of solute clusters. ...

    • The evolution of precipitates in an Al–Zn–Mg alloy 

      Thronsen, Elisabeth; Shah, Sohail; Hatzoglou, Constantinos; Marioara, Calin Daniel; Wenner, Sigurd; Andersen, Sigmund Jarle; Holmedal, Bjørn; Holmestad, Randi (Peer reviewed; Journal article, 2023)
      The precipitation sequence in Al–Zn–Mg alloys has been subject to many revisions over the years as more structural details of the early-stage Guinier-Preston (GP) zones and precipitates have been uncovered. To further ...

    • Introducing field evaporation energy loss spectroscopy 

      Rousseau, Loïc; Normand, Antoine; Morgado, Felipe F.; Søreide, Hanne-Sofie Marie Scisly; Stephenson, Leigh T.; Hatzoglou, Constantinos; Da Costa, Gérald; Tehrani, Kambiz; Freysoldt, Christoph; Gault, Baptiste; Vurpillot, François (Peer reviewed; Journal article, 2023)
      Retrieving information on the chemical and bonding states of atoms in a material in three-dimensions is challenging even for the most advanced imaging techniques. Here, we demonstrate that this information is accessible ...

    • Precipitation, mechanical properties and early slant ductile fracture in cyclic and naturally aged Al-Zn-Mg(-Cu) alloys 

      Shah, Sohail; Gopal, Akash; Thronsen, Elisabeth; Hatzoglou, Constantinos; Holmedal, Bjørn (Peer reviewed; Journal article, 2022)
      Natural and artificial ageing treatments are compared with ageing by cyclic deformation at room temperature. Atom probe tomography and transmission electron microscopy revealed that a fine distribution of GP-zones, was ...

    • A Quantitative Investigation of Functionalized Glazing Stacks by Atom Probe Tomography 

      Perrin Toinin, Jacques; Hatzoglou, Constantinos; Voronkoff, Justine; Montigaud, Hervé; Guimard, Denis; Wuttig, Matthias; Vurpillot, François; Cojocaru-Mirédin, Oana (Peer reviewed; Journal article, 2022)
      Insulating glazings used in products for the building and automotive market consist of flat glass with low-emissivity (low-E) coatings. One challenge is to increase the infrared reflectance of the glazing stack while ...