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Browsing by Author "Mehrem Issa Mohamed Mehrem, Ahmed"

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Browsing by Author "Mehrem Issa Mohamed Mehrem, Ahmed"

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    Nonlinear acoustics in periodic media: from fundamental effects to applications 
    Mehrem Issa Mohamed Mehrem, Ahmed (Universitat Politècnica de València, 2017-05-02)
    The natural dynamics are not ideal or linear. To understand their complex behavior, we needs to study the nonlinear dynamics in more simple models. This thesis is consist of two main setups. Both setups are simplified ...
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    Nonlinear dispersive waves in repulsive lattices 
    Mehrem, Ahmed; Jimenez, Noe; Salmerón-Contreras, L. J.; García-Andrés, Francesc Xavier; García-Raffi, L. M.; Picó Vila, Rubén; Sánchez Morcillo, Víctor José (American Physical Society, 2017)
    [EN] The propagation of nonlinear waves in a lattice of repelling particles is studied theoretically and experimentally. A simple experimental setup is proposed, consisting of an array of coupled magnetic dipoles. By driving ...
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    Propagation of intense acoustic waves in sonic crystals 
    Jimenez, Noe; Sánchez Morcillo, Víctor José; Mehrem Issa Mohamed Mehrem, Ahmed; Hamham, El Mokhta; Picó Vila, Rubén; García-Raffi, L. M. (Elsevier, 2015)
    [EN] The propagation of intense acoustic waves in a periodic medium (sonic crystal) is numerically studied. The medium consists in a structured fluid, formed by a periodic array of fluid layers with alternating linear ...
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    Theoretical study of microbubble dynamics under the action of ultrasound fields 
    Mehrem Issa Mohamed Mehrem, Ahmed (Universitat Politècnica de València, 2013-11-14)
    There are many developments in Ultrasound contrast agents (UCAs) which leads to improvement in medical image. Ultrasound contrast agents are micro scale gas bubbles encapsulated with thin shells on the order of nanometers ...