Matemaattis-luonnontieteellinen tiedekunta: viimeksi lisätyt
Aineistot 21-25 / 6106
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Overview of High-Performance Timing and Position-Sensitive MCP Detectors Utilizing Secondary Electron Emission for Mass Measurements of Exotic Nuclei at Nuclear Physics Facilities
(MDPI, 2024)Timing and/or position-sensitive MCP detectors, which detect secondary electrons (SEs) emitted from a conversion foil during ion passage, are widely utilized in nuclear physics and nuclear astrophysics experiments. This ... -
Exploring graphene edges with coherent electron focusing
(American Institute of Physics, 2010)We study theoretically the coherent electron focusing in graphene nanoribbons. Using semiclassical and numerical tight-binding calculations we show that armchair edges give rise to equidistant peaks in the focusing spectrum. ... -
Evidence for Graphene Edges Beyond Zigzag and Armchair
(American Physical Society, 2009)The edges of nanoscopic objects determine most of their properties. For this reason the edges of honeycomb carbon—always considered either zigzag- or armchairlike—need special attention. In this Brief Report we provide ... -
Gold in graphene : in-plane adsorption and diffusion
(2009)We study the bonding and diffusion of Au in graphene vacancies using density-functional theory. Energetics show that Au adsorbs preferably to double vacancies, steadily in-plane with graphene. All diffusion barriers for ... -
Density-functional tight-binding for beginners
(Elsevier, 2009)This article is a pedagogical introduction to density-functional tight-binding (DFTB) method. We derive it from the density-functional theory, give the details behind the tight-binding formalism, and give practical recipes ...