Experimental realization of full control of reflected waves with subwavelength acoustic metasurfaces
By Yong Li, Xue Jiang, Rui-qi Li, B. Liang, Xin-Ye Zou, Lei-lei Yin, Jian-chun Cheng. 2014
381 citations recorded by the source corpus.
Metasurfaces with subwavelength thickness have exhibited unconventional phenomena in ways that could not be mimicked by traditional materials. Here we report the analytical design and experimental realizations of acoustic metasurface with hitherto inaccessible functionality of manipulating the reflected waves arbitrarily. By suitably designing the phase shift profile covering 2 range induced by labyrinthine units, the metasurface can reflect acoustic waves in an unusual yet controllable manner. Anomalous reflection and ultrathin planar lens with adjustable focal point were both demonstrated with carefully designed metasurfaces. Remarkably, the free manipulation of phase shifts offers great flexibility in the design of non-paraxial or paraxial acoustic self-accelerating beams with arbitrary trajectories. With the extraordinary wave-steering ability, the metasurface should open exciting possibilities for designing compact acoustic components with versatile potential and may find a variety of applications ranging from ultrasound imaging to field caustic engineering.
Subfields: Atomic and Molecular Physics, and Optics, Biomedical Engineering, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/f2830f1e420c42db5905c47c2c95bc3a221b6e22
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In Atomic and Molecular Physics, and Optics
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Citations in the corpus
- Extreme low-frequency ultrathin acoustic absorbing metasurface (2019, background): “al by some means like through resonances [2]. In the past two decades, the explosion of interest in developing artificial resonant structures like acoustic metamaterials [3, 4, 5, 6] and metasurfaces [7, 8, 9, 10, 11, 12] was drastically increased owing to their exotic capabilities of manipulating s”
- Spider web-structured labyrinthine acoustic metamaterials for low-frequency sound control (2017, background): “In this case, thewave dispersion resembles that of zig-zag labyrinthinemetamaterials with folded channels [7, 8, 10, 14].”