Focusing capability of a phononic crystal based on a hollow metallic structure
| Autor: | Jérôme Olivier Vasseur, Anne-Christine Hladky-Hennion, Lionel Haumesser, Charles Croënne, Andrew N. Norris |
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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), GREMAN (matériaux, microélectronique, acoustique et nanotechnologies) (GREMAN - UMR 7347), Université de Tours (UT)-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Rutgers University System (Rutgers), Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Tours-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Acoustics and Ultrasonics Structure (category theory) Physics::Optics 02 engineering and technology 01 natural sciences law.invention Metal Crystal Optics Negative refraction law 0103 physical sciences Dispersion (optics) Electrical and Electronic Engineering 010306 general physics Instrumentation [SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph] business.industry 021001 nanoscience & nanotechnology [SPI.TRON]Engineering Sciences [physics]/Electronics Lens (optics) visual_art Focal spot visual_art.visual_art_medium 0210 nano-technology business Intensity (heat transfer) |
| Zdroj: | IEEE International Ultrasonics Symposium, IUS 2013 IEEE International Ultrasonics Symposium, IUS 2013, 2013, Prague, Czech Republic IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2014, 61, pp.1314-1321. ⟨10.1109/TUFFC.2014.3038⟩ IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, Institute of Electrical and Electronics Engineers, 2014, 61, pp.1314-1321. ⟨10.1109/TUFFC.2014.3038⟩ |
| ISSN: | 0885-3010 |
| Popis: | The dispersion curves of a phononic crystal (PC) based on a hollow metallic structure are presented. They exhibit a negative refraction dispersion branch and perfect refractive index matching with the surrounding water, leading to focusing capability. Numerical and experimental results are reported for a flat PC lens. The characteristics of the focal spot (intensity, dimensions, etc.) are numerically and experimentally investigated with the goal of finding the frequency of the optimal imaging performance. |
| Databáze: | OpenAIRE |
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