5 research outputs found

    Evidence of Ultrasonic Band Gap in Aluminum Phononic Crystal Beam

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    International audienceIn this paper, we prove theoretically and experimentally the existence of complete ultrasonic band gap in phononic crystal beam. The phononic beam structure studied is composed of a linear lattice array of square pillars on a beam, made with aluminum-fortal easily machinable at centimetric scale. Ultrasonic characterization of phononic beam guides shows the existence of a frequency range where the transmitted signals are strongly attenuated, due to the presence of ultrasonic band gap, in agreement with theoretical results predicted by finite element simulation. These structures present a potential for the use as energy loss reduction in micromechanical resonators at high frequency regime

    Le Traitement D'image Dans Les Mems : Outil Essentiel Dans La Caractérisation Sans Contacts Des Microsystèmes

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    International audienceLe Traitement D'image Dans Les Mems : Outil Essentiel Dans La Caractérisation Sans Contacts Des Microsystème

    Etude de Comportement Dynamique des Micropoutres MEMS : Simulation par FEM Sous COMSOL et ANSYS Multiphysiques

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    National audienceEtude de Comportement Dynamique des Micropoutres MEMS : Simulation par FEM Sous COMSOL et ANSYS Multiphysique

    La Modélisation par Eléments Finis Comme Outil Essentiel dans la Caractérisation des Structures MEMS : Application aux Microponts

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    International audienceLa Modélisation par Eléments Finis Comme Outil Essentiel dans la Caractérisation des Structures MEMS : Application aux Micropont
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