Salmerón Contreras, Luis José; García-Raffi, L. M.; Jimenez, Noe; Mehrem, Ahmed; Picó Vila, Rubén; Sánchez Morcillo, Víctor José; Staliunas, K.(Universidade do Porto, 2016-06-15)
[EN] In this work we study numerically the existence of gap solitons in an acoustic media. To approach the
problem a set of coupled-mode equations are given. In order to obtain a solitary wave in a real media,
it is necessary ...
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 ...
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 ...
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 ...
Mehrem, Ahmed; Sánchez Morcillo, Víctor José; Jimenez, Noe; Salmerón Contreras, Luis José; García-Andrés, Francesc Xavier; Picó Vila, Rubén; García-Raffi, L. M.(Universidade do Porto, 2016-06-15)
[EN] In this work, we studied numerically, analytically and experimentally the nonlinear dynamics for a chain of magnates. Propagation the second harmonic depends on the medium parameters and the excitation signal (amplitude ...
Mehrem, A.; Picó Vila, Rubén; Sánchez Morcillo, Víctor José; García-Raffi, L. M.; Salmerón-Contreras, L. J.; Jimenez, Noe; Staliunas, K.(Universidade do Porto, 2016-06-15)
[EN] We discuss two possible regimes of solitary wave formation in acoustic layered media. In the weakly
dispersive limit, KdV-type solitons are formed, consisting of broad pulses with a width much larger
than the lattice ...
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 ...