Browsing Det matematisk-naturvitenskapelige fakultet by Title

Now showing items 566-585 of 838

  • Predicting Fracture Network Development in Crystalline Rocks 
    McBeck, Jessica Ann; Aiken, John; Cordonnier, B.; Ben-Zion, Yehuda; Renard, Francois (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract The geometric properties of fractures influence whether they propagate, arrest, or coalesce with other fractures. Thus, quantifying the relationship between fracture network characteristics may help predict fracture ...
  • Predicting solid state material platforms for quantum technologies 
    Hebnes, Oliver Lerstøl; Bathen, Marianne Etzelmüller; Schøyen, Øyvind Sigmundson; Winther-Larsen, Sebastian Gregorius; Vines, Lasse; Hjorth-Jensen, Morten (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract Semiconductor materials provide a compelling platform for quantum technologies (QT). However, identifying promising material hosts among the plethora of candidates is a major challenge. Therefore, we have developed ...
  • Predicting the proximity to macroscopic failure using local strain populations from dynamic in situ X-ray tomography triaxial compression experiments on rocks 
    McBeck, Jessica Ann; Aiken, John Mark; Ben-Zion, Yehuda; Renard, Francois (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
    Predicting the proximity of large-scale dynamic failure is a critical concern in the engineering and geophysical sciences. Here we use evolving contractive, dilatational, and shear strain deformation preceding failure in ...
  • Predicting the Timing of Catastrophic Failure During Triaxial Compression: Insights from Discrete Element Method Simulations 
    McBeck, Jessica Ann (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Examining the deformation of rocks during triaxial compression may provide insights into the precursory phase that leads to large earthquakes by revealing the components of the deformation field that evolve with predictable, ...
  • Premelting and formation of ice due to Casimir-Lifshitz interactions: Impact of improved parameterization for materials 
    Li, Yang; Milton, Kimball A.; Brevik, Iver Håkon; Malyi, Alexandr I.; Thiyam, Priyandarshini; Persson, Clas; Parsons, Drew F.; Boström, Mathias (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Recently, the premelting and formation of ice due to the Casimir-Lifshitz interaction, proposed in early 1990s by Elbaum and Schick [Phys. Rev. Lett. 66, 1713 (1991)], have been generalized to diverse practical scenarios, ...
  • Pressure Dependence of Superconducting Properties, Pinning Mechanism, and Crystal Structure of the Fe0.99Mn0.01Se0.5Te0.5 Superconductor 
    Murugesan, Kannan; Lingannan, Govindaraj; Ishigaki, Kento; Uwatoko, Yoshiya; Sekine, Chihiro; Kawamura, Yukihiro; Junichi, Hayashi; Joseph, Boby; Vajeeston, Ponniah; Maheswari, Pankaj Kumar; Awana, V.P.S.; Sonachalam, Arumugam (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    We have investigated the pressure (P) effect on structural (up to 10 GPa), transport [R(T): up to 10 GPa], and magnetic [(M(T): up to 1 GPa)] properties and analyzed the flux pinning mechanism of the Fe0.99Mn0.01Se0.5Te0.5 ...
  • Pressure Induced Deformation and Flow Using CO2 Field Analogues, Utah 
    Skurtveit, Elin; Braathen, Alvar; Larsen, Eivind B.; Sauvin, Guillaume; Sundal, Anja; Zuchuat, Valentin (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Exhumed reservoirs providing evidence of CO2 accumulation and transport in geological history offer a unique possibility to supplement our knowledge on leakage processes observed along faults and fractures. A field location ...
  • Pressure Solution Grain Boundary Sliding as a Large Strain Mechanism of Superplastic Flow in the Upper Crust 
    Gratier, Jean-Pierre; Menegon, Luca; Renard, Francois (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract A mechanism accommodating large strain in superplastic flow with elongation of 100%–300%, is described for fine‐grained calcareous shales deformed at temperature of 200–335°C and depths of 5–8 km up to slate schists ...
  • Pressure-dependent modifications in the LaAuSb2 charge density wave system 
    Govindaraj, Lingannan; Boby, Joseph; Vajeeston, Ponniah; Chia Nung, Kuo; Chin Shan, Lue; Ganesan, Kalaiselvan; Piu, Rajak; Sonachalam, Arumugam (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Hydrostatic pressure response of LaAuSb2 charge density wave (CDW) system is investigated using electrical transport, x-ray diffraction (XRD), and density-functional theory (DFT). Resistivity data at ambient pressure ...
  • Pressure-induced collapse of large-moment magnetic order and localized-to-itinerant electronic transition in the host-guest compound [C s6Cl] [F e24 S e26] 
    Adler, Peter; Medvedev, Sergey A.; Valldor, Björn Martin; Naumov, Pavel G.; Elghazali, Moaz A.; Rüffer, Rudolf (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    The magnetic properties of iron chalcogenides and pnictides have found much interest as magnetic fluctuations are suggested to drive the formation of Cooper pairs in iron-based superconductors. Here, we have studied the ...
  • Pressure‑induced structural transition and huge enhancement of superconducting properties of single‑crystal Fe0.99Ni0.01Se0.5Te0.5 unconventional superconductor 
    Kalaiselvan, Ganesan; Govindaraj, Lingannan; Kannan, Murugesan; Christopher S., Perreault; Gopi K., Samudrala; Pankaj Kumar, Maheshwari; V. P. S., Awana; Vajeeston, Ponniah; Yogesh K., Vohra; Sonachalam, Arumugam (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)
    We report high-pressure structural studies (52 GPa) at room temperature combined with magnetic [(M(T):1GPa] and electrical resistivity [(ρ(T):0-21GPa)] measurements down to 2 K on Fe0.99Ni0.01Se0.5Te0.5 superconductor using ...
  • Primary intrinsic defects and their charge transition levels in beta-Ga2O3 
    Zimmermann, Christian; Rønning, Vegard; Frodason, Ymir Kalmann; Bobal, Viktor; Varley, Joel B; Vines, Lasse (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    A steady-state photocapacitance (SSPC) setup directly connected to the beamline of a MeV ion implanter is utilized to study primary intrinsic defects in β–Ga2O3 generated by He implantation at cryogenic temperatures (120 ...
  • Pristine microstructures in pseudotachylytes formed in dry lower crust, Lofoten, Norway 
    Dunkel, Kristina G; Morales, Luiz F.G.; Jamtveit, Bjørn (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Feldspar-rich pseudotachylytes from the island of Moskenesøya, Lofoten, formed in dry granulites under lower crustal conditions during the Caledonian orogeny. The central parts of the pseudotachylytes, where the cooling ...
  • Probing Molecular Motions in Metal-Organic Frameworks by Three-Dimensional Electron Diffraction 
    Samperisi, Laura; Jaworski, Aleksander; Kaur, Gurpreet; Lillerud, Karl Petter; Zou, Xiaodong; Huang, Zhehao (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Flexible metal–organic frameworks (MOFs) are known for their vast functional diversities and variable pore architectures. Dynamic motions or perturbations are among the highly desired flexibilities, which are key to guest ...
  • Probing the Atomic Arrangement of Subsurface Dopants in a Silicon Quantum Device Platform 
    Røst, Håkon; Tosi, Ezequiel; Strand, Frode Sneve; Åsland, Anna Cecilie; Lacovig, Paolo; Lizzit, Silvano; Wells, Justin William (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    High-density structures of subsurface phosphorus dopants in silicon continue to garner interest as a silicon-based quantum computer platform; however, a much-needed confirmation of their dopant arrangement has been lacking. ...
  • Probing the structural evolution and its impact on magnetic properties of FeCoNi(AlMn)x high-entropy alloy at the nanoscale 
    Bazioti, Kalliopi; Løvvik, Ole Martin; Poulia, Anthoula; Almeida Carvalho, Patricia; S. Azar, Amin; Mikheenko, Pavlo; Diplas, Spyridon; Gunnæs, Anette Eleonora (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    We report the first nanoscale investigation of FeCoNi(AlMn)x high-entropy alloys (HEAs) processed by laser metal deposition. The structural evolution of the alloy upon chemical composition variation (0.2 ≤ x ≤ 1.5) was ...
  • Process–Structure–Property Relationship in FeCoNiAlxMnx Complex Concentrated Alloys Processed by Additive Manufacturing 
    Poulia, Anthoula; S. Azar, Amin; Schrade, M.; Graff, J.S.; Bazioti, Kalliopi; Gunnæs, Anette Eleonora; Carvalho, P.A.; Diplas, Spyridon (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Fourteen alloys of the FeCoNiAlxMnx system were processed by laser metal deposition (LMD). The feedstock was a weighted and proportional blend of the containing elemental powders, targeting the nominal alloy compositions. ...
  • Profiling the baseline performance and limits of machine learning models for adaptive immune receptor repertoire classification 
    Kanduri, Chakravarthi; Pavlović, Milena; Scheffer, Lonneke; Motwani, Keshav; Chernigovskaya, Maria; Greiff, Victor; Sandve, Geir Kjetil Ferkingstad (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Background Machine learning (ML) methodology development for the classification of immune states in adaptive immune receptor repertoires (AIRRs) has seen a recent surge of interest. However, so far, there does not exist ...
  • Properties of Al-Doped Zinc Oxide and In-Doped Zinc Oxide Bilayer Transparent Conducting Oxides for Solar Cell Applications 
    Murugesan, Marikkan; A., Dinesh; J, Mayandi; Venkatachalapathy, Vishnukanthan; Pearce, Joshua M. (Journal article / Tidsskriftartikkel / SubmittedVersion, 2018)
    Novel aluminum and indium doped zinc oxide (ZnO) bilayer transparent conducting oxide thin films was fabricated by simple sol-gel spin coating method and post-annealed at 500 °C for an hour under nitrogen ambient for solar ...
  • Properties of Donor Qubits in Zn O Formed by Indium-Ion Implantation 
    Wang, Xingyi; Zimmermann, Christian; Titze, Michael; Niaouris, Vasileios; Hansen, Ethan R.; D'Ambrosia, Samuel H.; Vines, Lasse; Bielejec, Edward S.; Fu, Kai-Mei C. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Neutral shallow donors (D0) in ZnO have emerged as a promising candidate for solid-state spin qubits. Here we report on the formation of D0 in ZnO via implantation of In and subsequent annealing. The implanted In donors ...