3D sound wave focusing by 2D internal periodic structure of 3D external cuboid shape
| Autor: | Pilar Candelas, Daniel Tarrazó-Serrano, Igor V. Minin, Oleg V. Minin, Sergio Castiñeira-Ibáñez, Constanza Rubio |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Diffraction
Physics::Optics General Physics and Astronomy 02 engineering and technology 01 natural sciences law.invention Crystal Optics law 0103 physical sciences 010302 applied physics Physics Sonic crystal cuboid Cuboid business.industry Acoustic beam 021001 nanoscience & nanotechnology lcsh:QC1-999 Finite element method Lens (optics) Wavelength Focal depth FISICA APLICADA 0210 nano-technology Focus (optics) business lcsh:Physics Beam (structure) |
| Zdroj: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname Results in Physics, Vol 15, Iss, Pp-(2019) |
| Popis: | [EN] In this work, we report the focusing effect of a 2D sonic crystal cuboid. The proposed sonic composite lens is vertically extended from a 2-D flat Phononic Crystal Structure, but it is found to be able to focus waves in a three-dimensional manner. By varying the cuboid size, beam dimensions change and transverse beam width values smaller than the classical diffraction limit (~0.3 of wavelength) can be obtained. Numerical results have been obtained by Finite Element Method. This work has been supported by RTI2018-100792-B-I00 (MICINN) and was partially carried out within the framework of the Tomsk Polytechnic University Competitiveness Enhancement Program. D. T.-S. acknowledges financial support from Ministerio de Ciencia, Innovación y Universidades de España through grant BES-2016-077133. |
| Databáze: | OpenAIRE |
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