• Energy-efficiency of Cardiomyocyte Stimulation with Rectangular Pulses 

      Laasmaa, Martin; Lu, Pengfei; Veletic, Mladen; Louch, William Edward; Bergsland, Jacob; Balasingham, Ilangko; Vendelin, Marko (Journal article; Peer reviewed, 2019)
      In cardiac pacemaker design, energy expenditure is an important issue. This work aims to explore whether varying stimulation pulse configuration is a viable optimization strategy for reducing energy consumption by the ...
    • The influence of AlN buffer layer on the growth of self-assembled GaN nanocolumns on graphene 

      Liudi Mulyo, Andreas; Rajpalke, Mohana; Vullum, Per Erik; Weman, Helge; Kishino, Katsumi; Fimland, Bjørn-Ove (Peer reviewed; Journal article, 2020)
      GaN nanocolumns were synthesized on single-layer graphene via radio-frequency plasma-assisted molecular beam epitaxy, using a thin migration-enhanced epitaxy (MEE) AlN buffer layer as nucleation sites. Due to the weak ...
    • Quantitative strain analysis of InAs/GaAs quantum dot materials 

      Vullum, Per Erik; Nord, Magnus Kristofer; Vatanparast, Maryam; Thomassen, Sedsel Fretheim; Boothroyd, Chris; Holmestad, Randi; Fimland, Bjørn-Ove; Reenaas, Turid Worren (Journal article; Peer reviewed, 2017)
      Geometric phase analysis has been applied to high resolution aberration corrected (scanning) transmission electron microscopy images of InAs/GaAs quantum dot (QD) materials. We show quantitatively how the lattice mismatch ...
    • Spatially Confined Spin Polarization and magnetic sublattice control in (La,Sr)MnO3−δ Thin Films by Oxygen Vacancy Ordering 

      Moreau, Magnus; Selbach, Sverre Magnus; Tybell, Per Thomas Martin (Journal article; Peer reviewed, 2017)
      Perovskite oxides are known for their strong structure property coupling and functional properties such as ferromagntism, ferroelectricity and high temperature superconductivity. While the effect of ordered cation vacancies ...