Reflected wavefront manipulation based on ultrathin planar acoustic metasurfaces

By Yong Li, B. Liang, Zhongming Gu, Xin-Ye Zou, Jian-chun Cheng. Scientific Reports, 2013

575 citations recorded by the source corpus.

The introduction of metasurfaces has renewed the Snell's law and opened up new degrees of freedom to tailor the optical wavefront at will. Here, we theoretically demonstrate that the generalized Snell's law can be achieved for reflected acoustic waves based on ultrathin planar acoustic metasurfaces. The metasurfaces are constructed with eight units of a solid structure to provide discrete phase shifts covering the full 2π span with steps of π/4 by coiling up the space. By careful selection of the phase profiles in the transverse direction of the metasurfaces, some fascinating wavefront engineering phenomena are demonstrated, such as anomalous reflections, conversion of propagating waves into surface waves, planar aberration-free lens and nondiffracting Bessel beam generated by planar acoustic axicon. Our results could open up a new avenue for acoustic wavefront engineering and manipulations.

Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials, Oceanography

View Paper: https://www.semanticscholar.org/paper/1b89f7b42c8da4bca3541746aa68911fcfd9b1d8

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Biomedical Engineering

In Electronic, Optical and Magnetic Materials

In Oceanography

Mohamed-Slim Alouini

Citations in the corpus

Experimental realization of full control of reflected waves with subwavelength acoustic metasurfaces (2014, background): “It is worth stressing that the proposed scheme provides a substantial conceptual advantage over the first theoretical frame presented by us with some seemingly similar labyrinthine units for which the physical mechanism is complicated and cannot be understood easily due to the extrastraight air chan”
Smart radio environments empowered by reconfigurable AI meta-surfaces: an idea whose time has come (2019, background): “Meta-surfaces that synthesize several types of wave transformation across the entire telecommunication spectrum can be efficiently fabricated, [17–20], [68–79].”
Toward Smart Wireless Communications via Intelligent Reflecting Surfaces: A Contemporary Survey (2019, methodology): “An acoustic metasurface is constructed in [64], which can tailor the reﬂected waves with discrete phase shifts covering the full 2 π span.”