Tunneliliitosten ominaisuuksien parantaminen lämpökäsittelyllä
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Ytterbium-doped fibers for high-power fiber lasers
Dutta, Arpan (American Institute of Physics, 2021)Ytterbium (Yb) doped optical fibers are widely used in high-power applications and ultrafast lasing since they show adequate power-handling capability and provide desirable beam quality. Yb-doped fibers with large core ... -
Strain effects in phosphorus bound exciton transitions in silicon
Loippo, Teemu; Kanniainen, Antti; Muhonen, Juha T. (American Physical Society (APS), 2023)Donor spin states in silicon are a promising candidate for quantum information processing. One possible donor spin readout mechanism is the bound exciton transition that can be excited optically and creates an electrical ... -
Modeling optical constants from the absorption of organic thin films using a modified Lorentz oscillator model
Dutta, Arpan; Tiainen, Ville; Qureshi, Hassan Ali; Duarte, Luís; Toppari, J. Jussi (Optica Publishing Group, 2022)Optical constants of organic thin films can be evaluated using the Lorentz oscillator model (LOM) which fails to fit inhomogeneously broadened absorption of highly concentrated molecular films. In modified LOM (MLOM), the ... -
Cubic aromaticity in ligand-stabilized doped Au superatoms
López-Estrada, Omar; Selenius, Elli; Zuniga-Gutierrez, Bernardo; Malola, Sami; Häkkinen, Hannu (American Institute of Physic, 2021)The magnetic response of valence electrons in doped gold-based [M@Au8L8]q superatoms (M = Pd, Pt, Ag, Au, Cd, Hg, Ir, and Rh; L = PPh3; and q = 0, +1, +2) is studied by calculating the gauge including magnetically induced ... -
Synergistic effects of low-level magnesium and chromium doping on the electrochemical performance of LiNiO2 cathodes
Laine, Petteri; Välikangas, Juho; Kauppinen, Toni; Hu, Tao; Wang, Shubo; King, Graham; Singh, Harishchandra; Tynjälä, Pekka; Lassi, Ulla (Springer, 2024)LiNiO2 cathode materials with magnesium and chromium doping were prepared using a simple low - cost and efficient co - precipitation and lithiation procedure. During this procedure, both magnesium and chromium form a ...