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Listar por palabra clave "Analytical expressions"

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Listar por palabra clave "Analytical expressions"

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    Acoustic analogue of graphene: observation of Dirac cones in acoustic surface waves 
    Torrent Martí, Daniel; Sánchez-Dehesa Moreno-Cid, José (American Physical Society, 2012-04-27)
    We demonstrate the presence of Dirac cones in the dispersion relation of acoustic waves propagating on the surface of a plate of methyl methacrylate containing a honeycomb lattice of cylindrical boreholes. This structure ...
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    Electromagnetic absorption in anisotropic photonic crystal of alumina cylinders 
    Carbonell Olivares, Jorge; Sánchez-Dehesa Moreno-Cid, José; Arriaga, J.; Gumen, L.; Krokhin, A. (Elsevier, 2011)
    [EN] We present a theoretical and experimental study of the effective permittivity of a photonic crystal (PC) made of parallel dielectric rods in the long-wavelength limit. Using the plane-wave expansion method we derive ...
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    Squeezing and expanding light without reflections via transformation optics 
    García Meca, Carlos; Tung, Michael Ming-Sha; Galán Conejos, José Vicente; Ortuño Molinero, Rubén; Rodríguez Fortuño, Francisco José; Martí Sendra, Javier; Martínez Abietar, Alejandro José (2011)
    [EN] We study the reflection properties of squeezing devices based on transformation optics. An analytical expression for the angle-dependent reflection coefficient of a generic three-dimensional squeezer is derived. In ...
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    Theoretical study about the gain in indirect bandgap semiconductor optical cavities 
    Escalante Fernández, José María; Martínez Abietar, Alejandro José (Elsevier, 2012-06-15)
    [EN] Indirect bandgap semiconductors such as silicon are not efficient light emitters because a phonon with a high momentum is required to transfer an electron from the conduction to the valence band. In a recent study ...