Now showing items 21-23 of 23

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      Role of occupied d states in the relaxation of hot electrons in Au 

      Campillo Santos, Igor; Pitarke De La Torre, José María; Rubio, A.; Echenique Landiribar, Pedro Miguel (American Physical Society, 2000-07-15)
      We present first-principles calculations of electron-electron scattering rates of low-energy electrons in Au. Our full band-structure calculations indicate that a major contribution from occupied d states participating in ...
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      Upconversion cooling of Er-doped low-phonon fluorescent solids 

      García Adeva, Angel Javier; Balda de la Cruz, Rolindes; Fernández Rodríguez, Joaquín Manuel (American Physical Society, 2009-01)
      We report on a novel mechanism for laser cooling of fluorescent solids based on infrared-to-visible upconversion often found in rare-earth-doped low-phonon materials. This type of optical cooling presents some advantages ...
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      Wheel-rail wear index prediction considering multiple contact patches 

      Santamaría Manrique, Javier; García Vadillo, Ernesto; Oyarzabal de Celis, Olatz (Elsevier, 2009-06)
      This paper shows a new wheel-rail contact model specially suited to obtain wear indexes between wheel and rail when the vehicle negotiates tight curves. The model presented in the paper enables introduction of the two ...