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Search: hsv:(NATURVETENSKAP) hsv:(Fysik) hsv:(Den kondenserade materiens fysik) > Swedish

  • Result 1-10 of 32
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1.
  • Ögren, Magnus, 1977- (author)
  • Klassisk mekanik vs kvantmekanik
  • 2010
  • In: Forskning. - Göteborg : Forskningsförlaget. - 1654-8876. ; :3-4, s. 50-54
  • Research review (pop. science, debate, etc.)
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2.
  • Ståhle, Per, et al. (author)
  • Interface instabilities of growing hydrides
  • 2016
  • In: Procedia Structural Integrity. - : Elsevier BV. - 2452-3216. ; 2, s. 589-596
  • Journal article (peer-reviewed)abstract
    • Formation of metal hydrides is a serious complication that occur when hydride forming metals such as zirconium, niobium, vanadium and magnesium are exposed to long term hydrogen environment. The main concern is that the hydride, as being a brittle material, has very poor fracture mechanical properties. Formation of hydride is associated with transportation of hydrogen along the gradients of increasing hydrostatic stress, which leads to crack tips and other stress concentrators, where it forms the hydride. In the present study the thermodynamics of the evolving hydrides is studied. The process is driven by the release of free strain, chemical, and gradient energies. A phase field model is used to capture the driving forces that the release of the free energy causes. The study gives the conditions that lead to hydride advancement versus retreat and under which conditions the metal-hydride interface becomes unstable and develops a waviness. The spatial frequency spectrum leading to instability is found to depend on the ratio of the elastic strain energy density and parameters related to the interface energy.
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3.
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4.
  • Karlsson, Stefan, 1984-, et al. (author)
  • Antireflektiv beläggning i världsklass ger effektivare solfångare
  • 2023
  • In: GLAS. ; :4, s. 36-37
  • Journal article (pop. science, debate, etc.)abstract
    • I ett nyligen avslutat forskningsprojekt har Absolicon Solar Collector tillsammans med RISE Research Institutes of Sweden och Umeå universitet utvecklat en ny toppmodern antireflektiv beläggning som kan göra Absolicons solfångare än mer effektiva. Nu siktar man på ett nytt projekt för att skala upp metoden.
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5.
  • Karlsson, Stefan, 1984-, et al. (author)
  • Multifunktionella glasytor för solceller
  • 2023
  • In: GLAS. ; :4, s. 38-39
  • Journal article (pop. science, debate, etc.)abstract
    • I ett forskningsprojekt som kommer avslutas vid årsskiftet har framtidens multifunktionella glasytor för solceller utvecklats. Antireflektiva, UV-skyddande, fotokatalytiska och lättrengörliga glasytor är egenskaperna som glasytorna kommer att få. Forskningsidén baseras på tidigare kunskap ifrån forskning vid RISE, Uppsala universitet och KTH och förväntas leda till effektiva solceller med längre livslängd.
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6.
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7.
  • Almbladh, Carl-Olof, et al. (author)
  • Theory of Auger core-valence-valence processes in simple metals. I. Total yields and core-level lifetime widths
  • 1989
  • In: Physical Review B. - 1550-235X. ; 39:6, s. 3489-3502
  • Journal article (peer-reviewed)abstract
    • There is a considerable disagreement in the literature on the description of lifetime effects arising from core-valence transitions in solids. We calculate here Auger and radiative widths of shallow core levels in Li, Be, Na, Mg, and Al with use of principles consistent with dynamical theories of secondary-emission processes developed earlier. The lifetime has no simple relation to the usual self-energy but is instead directly related to emission yields. The problem of choosing reliable approximations for Auger rates and matrix elements is analyzed theoretically and computationally. We also comment on some earlier approaches. Much of our discussion pertains also to calculations of Auger line shapes from first principles. For long hole lifetimes the total and partial level widths obey an initial-state rule and follow from wave functions perturbed by a static core hole. To obtain these impurity wave functions we perform self-consistent supercell calculations. The core-hole screening increases the Auger rates by factors of the order 2–4 compared with results from ground-state orbitals but has never been properly included before. The width of the 1s level in Li is rather accurately known because it monitors large effects of incomplete lattice relaxation. For Li we obtain here a width 17 meV in excellent agreement with the value 16 meV deduced earlier from measurements by Callcott et al.
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8.
  • Andersson, Magnus, 1963- (author)
  • Helt orimliga förhoppningar
  • 2012
  • In: Forskning och framsteg. - Stockholm. - 0015-7937. ; :2, s. 72-72
  • Journal article (pop. science, debate, etc.)
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9.
  • Bäckström, Gunnar (author)
  • Materien under tryck
  • 1974
  • In: Annales Academiae regiae scientiarum Upsaliensis : Kungl. Vetenskapssamhällets i Uppsala årsbok. - Stockholm : Almqvist & Wiksell. - 0504-0736. ; 18, s. 98-106
  • Journal article (other academic/artistic)
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10.
  • Bäckström, Gunnar (author)
  • Smid medan trycket är högt
  • 1983
  • In: Forskning och framsteg. - Stockholm. - 0015-7937. ; :2, s. 22-28
  • Journal article (pop. science, debate, etc.)
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Skapa referenser, mejla, bekava och länka
  • Result 1-10 of 32
Type of publication
journal article (16)
conference paper (7)
book chapter (3)
doctoral thesis (2)
reports (1)
other publication (1)
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research review (1)
licentiate thesis (1)
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Type of content
peer-reviewed (13)
pop. science, debate, etc. (10)
other academic/artistic (9)
Author/Editor
Deppert, Knut (8)
Samuelson, Lars (3)
Söderberg, Staffan (3)
Messing, Maria (3)
Nilsson, Elisabeth (2)
Sundqvist, Bertil (2)
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Karlsson, Stefan, 19 ... (2)
Bäckström, Gunnar (2)
Persson, Axel (2)
Olsson, Thomas (1)
Karlsson, Ulf (1)
Hultman, Lars (1)
Olin, Håkan (1)
Ögren, Magnus, 1977- (1)
Magnusson, Martin (1)
Linse, Sara (1)
Wågberg, Thomas (1)
Wallenberg, Reine (1)
Montelius, Lars (1)
Bohgard, Mats (1)
Eriksson, Olle (1)
Ahlberg, Anders (1)
Österlund, Lars (1)
Lindgren, David (1)
Fadeel, Bengt (1)
Strömme, Maria (1)
Gustafsson, Anders (1)
Zhang, Renyun (1)
Hummelgård, Magnus (1)
Andres, Britta (1)
Dahlström, Christina (1)
Norgren, Magnus (1)
Andersson, Mattias (1)
Ståhle, Per (1)
Almbladh, Carl-Olof (1)
Hedin, Lars (1)
Minnhagen, Petter (1)
Morales, Alvaro Luis (1)
Grossmann, Günter (1)
Anand, Srinivasan (1)
Delsing, Per (1)
Andersson, Magnus, 1 ... (1)
Talyzin, Alexandr, 1 ... (1)
Grafström, Roland (1)
Wang, Lin (1)
Järn, Mikael (1)
Ståhle, P. (1)
Timm, Rainer (1)
Zäll, Erik (1)
Westerström, Rasmus (1)
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University
Lund University (19)
Umeå University (5)
RISE (2)
University of Gothenburg (1)
Royal Institute of Technology (1)
Uppsala University (1)
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Örebro University (1)
Linköping University (1)
Mid Sweden University (1)
Blekinge Institute of Technology (1)
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Research subject (UKÄ/SCB)
Natural sciences (32)
Engineering and Technology (9)
Social Sciences (1)

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