Broadband Coherent Perfect Absorption of Acoustic Waves with Bubble Meta-Screens
| العنوان: | Broadband Coherent Perfect Absorption of Acoustic Waves with Bubble Meta-Screens |
|---|---|
| المؤلفون: | Anatoliy Strybulevych, Reine-Marie Guillermic, Maxime Lanoy, John H. Page |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Physics, Coupling, Physics and Astronomy (miscellaneous), business.industry, Bubble, FOS: Physical sciences, 02 engineering and technology, Acoustic wave, Applied Physics (physics.app-ph), Physics - Applied Physics, Low frequency, Condensed Matter - Soft Condensed Matter, 021001 nanoscience & nanotechnology, 01 natural sciences, Wavelength, Resonator, Optics, Radiative process, 0103 physical sciences, Soft Condensed Matter (cond-mat.soft), 010306 general physics, 0210 nano-technology, Absorption (electromagnetic radiation), business |
| الوصف: | A bubble meta-screen is an exceptionally effective and low frequency resonator which can be optimized in order to exactly balance the energy provided by radiative process and lost under a viscous mechanism (critical coupling). Under this condition, one can absorb 99.9% of the energy carried by two phase-matched counter propagating acoustic beams. This phenomenon, called coherent perfect absorption, is here observed with bubbles 75 times smaller than the incident wavelength and is shown to be remarkably broadband. Finally, tuning the relative phases of the two beams turns out to be an efficient way to control the absorption in the medium. 5 pages, 4 figures |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d2b10dfbc679ad35ead25a0e13e6f27 http://arxiv.org/abs/1808.02509 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....2d2b10dfbc679ad35ead25a0e13e6f27 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |