Propagation of elastic waves in a one-dimensional high aspect ratio nanoridge phononic crystal phononic crystal
| Autor: | Gueddida, Abdellatif, Pennec, Yan, El Boudouti, El Houssaine, Fytas, George, Djafari Rouhani, Bahram |
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| Přispěvatelé: | Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Physique - IEMN (PHYSIQUE - IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Max Planck Institute for Polymer Research, Max-Planck-Gesellschaft, University of Crete [Heraklion] (UOC), Acknowledgments: The work was partially supported by ERC SmartPhon No. 694977, Physique-IEMN (PHYSIQUE-IEMN) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Applied Sciences Applied Sciences, 2018, 8 (5), pp.805. ⟨10.3390/app8050805⟩ Applied Sciences, MDPI, 2018, 8 (5), pp.805. ⟨10.3390/app8050805⟩ |
| ISSN: | 2076-3417 |
| Popis: | International audience; We investigate the propagation of elastic waves in a one-dimensional (1D) phononic crystal constituted by high aspect ratio epoxy nanoridges that have been deposited at the surface of a glass substrate. With the help of the finite element method (FEM), we calculate the dispersion curves of the modes localized at the surface for propagation both parallel and perpendicular to the nanoridges. When the direction of the wave is parallel to the nanoridges, we find that the vibrational states coincide with the Lamb modes of an infinite plate that correspond to one nanoridge. When the direction of wave propagation is perpendicular to the 1D nanoridges, the localized modes inside the nanoridges give rise to flat branches in the band structure that interact with the surface Rayleigh mode, and possibly open narrow band gaps. Filling the nanoridge structure with a viscous liquid produces new modes that propagate along the 1D finite height multilayer array |
| Databáze: | OpenAIRE |
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