Blar i Institutt for materialteknologi på tittel

Viser treff 2393-2412 av 2513

    • Time-enhanced performance of oxide thermoelectric modules based on a hybrid p-n junction 

      Kanas, Nikola; Bjørk, Rasmus; Wells, Kristin Høydalsvik; Schuler, Raphael; Einarsrud, Mari-Ann; Pryds, Nini; Wiik, Kjell (Peer reviewed; Journal article, 2021)
      The present challenge with all-oxide thermoelectric modules is their poor durability at high temperatures caused by the instability of the metal-oxide interfaces at the hot side. This work explains a new module concept ...

    • Time-Evolved SERS Signatures of DEP-Trapped Aβ and Zn2+Aβ Peptides Revealed by a Sub-10 nm Electrode Nanogap 

      Vu, Katrin H.P.; Lee, Ming-Che; Blankenburg, Gerhard H.; Chang, Yu-Jen; Chu, Ming-Lee; Erbe, Andreas; Lesser-Rojas, Leonardo; Chen, Yun-Ru; Chou, Chia-Fu (Peer reviewed; Journal article, 2021)
      Alzheimer’s disease (AD) has become highly relevant in aging societies, yet the fundamental molecular basis for AD is still poorly understood. New tools to study the undergoing structural conformation changes of amyloid ...

    • Tin and Tin Alloys for Low Cost Bipolar Plates in PEM Fuel Cells 

      McCay, Katie (Doctoral theses at NTNU;2020:408, Doctoral thesis, 2020)
      Proton Exchange Membrane (PEM) Fuel Cells are one of the most promising futures for green energy, as they provide a sustainable alternative to combustion engines in vehicles. The bipolar plate (BPP) is a crucial component ...

    • Titanium Carbide Coating on Graphene Nanoplatelets 

      Khan, Mahmood; Ahmad, Salman; Zaidi, Sarim; Wadood, Abdul; Subhani, Tayyab; Akhtar, Shahid; Husain, Syed Wilayat; Aune, Ragnhild Elizabeth (Peer reviewed; Journal article, 2020)
      Titanium carbide was formed on graphene nanoplatelets (GNPs) using potassium hexa-fluorotitanate (K2TiF6) salt in the presence of pure aluminium. K2TiF6 - GNPs mixture with titanium to carbon ratio of 5:1 was heated at a ...

    • Topological defects in hexagonal manganites - Inner structure and emergent electrostatics 

      Holtz, Megan, E.; Shapovalov, Konstantin; Mundy, Julia; Chang, C. S.; Yan, Zewu; Bourret, Edith; Muller, David A.; Meier, Dennis; Cano, Andrés (Journal article; Peer reviewed, 2017)
      Diverse topological defects arise in hexagonal manganites, such as ferroelectric vortices, as well as neutral and charged domain walls. The topological defects are intriguing because their low symmetry enables unusual ...

    • Topological domain walls in helimagnets 

      Schoenherr, Peggy; Müller, Jan; Köhler, Laura; Rosch, Achim; Kanazawa, Naoya; Tokura, Yoshinori; Garst, Markus; Meier, Dennis (Journal article; Peer reviewed, 2018)
      Domain walls naturally arise whenever a symmetry is spontaneously broken. They interconnect regions with different realizations of the broken symmetry, promoting structure formation from cosmological length scales to the ...

    • Toughening of Y-doped BaZrO3 proton conducting electrolytes by hydration 

      Sazinas, Rokas; Einarsrud, Mari-Ann; Grande, Tor (Journal article; Peer reviewed, 2017)
      In BaZr1−xYxO3−x/2 (BZY), the state-of-the-art oxide proton conductors, the proton conductivity is facilitated by hydration of oxygen vacancies. Hydration induces lattice expansion, which may induce stress and thereby ...

    • Toward the recovery of solar silicon from end-of-life PVs by vacuum refining 

      Hoseinpur Kermani, Arman; Tang, Kai; Ulyashin, Alexander; Palitzch, Wolfram; Safarian, Jafar (Peer reviewed; Journal article, 2023)
      Considering the boom of Si solar cell installation, it is necessary to establish a process for recycling of Si from End-of-life photovoltaics (PVs). Silicon in the PVs is synthetically doped and coated by various elements ...

    • Toward thin film organic coatings for corrosion protection of cultural heritage 

      Gustad, Flø Erlend (Master thesis, 2022)
      Korrosjon av metall utgjør en betydelig utfordring for bevaring av museumsgjenstander, og ved Ringve / Rockheim musikkmuseum i Trondheim er det observert korrosjonsskader p˚a flere musikkinstrumenter. Korrosjon av jern p˚a ...

    • Towards 3D Modelling of Macrosegregation Formation and Modification in DC Casting of Aluminium Alloys Accounting for Equiaxed Grain Growth and Transport 

      Pakanati, Akash (Doctoral theses at NTNU;2019:34, Doctoral thesis, 2019)
      Macrosegregation refers to the inhomogeneous distribution of solute elements at the scale of cast product. It is a severe defect affecting the quality of cast product produced through Direct Chill (DC) casting process. ...

    • Towards a coupled multi-scale, multi-physics simulation framework for aluminium electrolysis 

      Einarsrud, Kristian Etienne; Eick, Ingo; Bai, Wei; Feng, Yuqing; Hua, Jinsong; Witt, Peter J. (Journal article, 2017)
      Aluminium metal production through electrolytic reduction of alumina in a cryolite bath is a complex, multi-physics, multi-scale process, including magneto-hydrodynamics (MHD), bubble flow, thermal convection, melting and ...

    • Towards high-throughput microstructure simulation in compositionally complex alloys via machine learning 

      Li, Yue; Holmedal, Bjørn; Liu, Boyu; Li, Hongxiang; Zhuang, Linzhong; Zhang, Jishan; Du, Qiang; Xie, Jianxin (Peer reviewed; Journal article, 2021)
      The coupling of computational thermodynamics and kinetics has been the central research theme in Integrated Computational Material Engineering (ICME). Two major bottlenecks in implementing this coupling and performing ...

    • Towards the Understanding of the pH Dependency of the Chloride Binding of Portland Cement Pastes 

      Machner, Alisa; Hemstad, Petter; De Weerdt, Klaartje (Journal article; Peer reviewed, 2018)
      Hydrated Portland cement paste exposed to a NaCl solution was acidified by adding HCl in small steps, gradually lowering the pH. The chloride binding of the cement paste changed as a function of the pH. For the range of ...

    • Trace Elements in Al-Si Foundry Alloys 

      Ludwig, Thomas H. (Doktoravhandlinger ved NTNU, 1503-8181; 2013:360, Doctoral thesis, 2013)
      Aluminium alloys based on the aluminium-silicon system are widely used for automotive and aerospace applications as this industry seeks competitive light materials to replace e.g. cast iron and steel. Al-Si alloys have low ...

    • Tracer diffusion of 96Zr and 134Ba in polycrystalline BaZrO3 

      Sazinas, Rokas; Sakaguchi, Isao; Hasle, Ida Margrete; Polfus, Jonathan M.; Haugsrud, Reidar; Einarsrud, Mari-Ann; Grande, Tor (Journal article; Peer reviewed, 2017)
      Cation tracer diffusion in polycrystalline cubic BaZrO3 perovskites was studied using the stable isotopes 134Ba and 96Zr in air at 1015–1200 and 1300–1500 °C, respectively. Thin films of 134BaO and 96ZrO2 were deposited ...

    • Transformation Kinetics of Burnt Lime in Freshwater and Sea Water 

      Justnes, Harald; Escudero-Oñate, Carlos; Garmo, Øyvind Aaberg; Mengede, Martin (Peer reviewed; Journal article, 2020)
      Calcium oxide (CaO), also known as burnt lime, is being considered as a possible treatment to reduce the negative impact of sea urchins on tare forests in northern coastal waters and blue-green algal blooms in the surrounding ...

    • Transformation of Iron (III) Nitrate from an Aerosol by Ultrasonic Spray Pyrolysis and Hydrogen Reduction 

      Stopic, Srecko; Hounsinou, Ayadjenou Humphrey; Stéphane, Koffi Aka; Volkov Husovic, Tatjana; Emil Kaya, Elif; Friedrich, Bernd (Journal article; Peer reviewed, 2023)
      Due to their unique properties, iron nanoparticles find diverse applications across various fields, including catalysis, electronics, wastewater treatment, and energy storage. Nano-iron particles are mostly sub-micrometer ...

    • Transient liquid phase bonding of Al-6063 to steel alloy UNS S32304 

      Saleh, Mohamed Ismail; Roven, Hans Jørgen; Khan, Tahir I.; Iveland, Terje (Journal article; Peer reviewed, 2018)
      Transient liquid phase (TLP) bonding of 6063 aluminum alloy (Al-6063) and duplex alloy 2304 stainless steel (UNS S32304) was performed using copper foil as an interlayer between the base metals. A compression load was ...

    • Transition Metal-Carbon Bond Enthalpies as Descriptor for the Electrochemical Stability of Transition Metal Carbides in Electrocatalytic Applications 

      Göhl, Daniel; Rueß, Holger; Pander, Marc; Zeradjanin, Aleksandar; Mayrhofer, Karl J.J.; Schneider, Jochen M.; Erbe, Andreas; Ledendecker, Marc (Journal article; Peer reviewed, 2020)
      Transition metal carbides are used for various applications such as hard coating, heterogeneous catalysis, catalyst support material or coatings in fuel cell applications. However, little is known about the stability of ...

    • Transition-Metal Nanoparticle Catalysts Anchored on Carbon Supports via Short-Chain Alginate Linkers 

      Tafjord, Joakim; Holmen, Anders; Rytter, Erling; Myrstad, Rune; Svenum, Ingeborg-Helene; Christensen, Bjørn E.; Yang, Jia (Journal article; Peer reviewed, 2021)
      This study reports a green, inexpensive, and highly versatile procedure to synthesize well-dispersed transition-metal nanoparticles anchored on carbon supports. The resulting metal loadings are 26 wt % or above. Achieving ...