Coding Acoustic Metasurfaces.
Sign Up to like & getrecommendations! Published in 2017 at "Advanced materials"
DOI: 10.1002/adma.201603507
Abstract: Coding acoustic metasurfaces can combine simple logical bits to acquire sophisticated functions in wave control. The acoustic logical bits can achieve a phase difference of exactly π and a perfect match of the amplitudes for… read more here.
Keywords: acoustic metasurfaces; coding acoustic;
Sound‐Speed Modifying Acoustic Metasurfaces for Acoustic Holography
Sign Up to like & getrecommendations! Published in 2023 at "Advanced Materials"
DOI: 10.1002/adma.202208002
Abstract: Acoustic metasurfaces offer unique capabilities to steer and direct acoustic fields, though these are generally composed of complex 3D structures, complicating their fabrication and applicability to higher frequencies. Here, an ultrathin metasurface approach is demonstrated,… read more here.
Keywords: sound speed; speed modifying; acoustic metasurfaces; modifying acoustic ... See more keywords
Analytical Modelling for Predicting the Sound Field of Planar Acoustic metasurface
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DOI: 10.1063/1.5000055
Abstract: An analytical model is built to predict the acoustic fields of acoustic metasurfaces. The acoustic fields are investigated for a Gaussian sound beam incident on the acoustic metasurfaces. The Gaussian sound beam is decomposed into… read more here.
Keywords: analytical model; acoustic metasurface; sound field; model ... See more keywords
Nonplanar acoustic metasurface for focusing
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Applied Physics"
DOI: 10.1063/1.5082670
Abstract: Acoustic metasurfaces have attracted considerable attention in recent years because of their unprecedented manipulation of acoustic waves within subwavelength planar structures. However, planar rigid structures are not compatible with human skin, which possesses dynamically varying… read more here.
Keywords: acoustic metasurface; nonplanar metasurface; metasurface; acoustic metasurfaces ... See more keywords
Acoustic metasurfaces for efficient matching of non-contact ultrasonic transducers
Sign Up to like & getrecommendations! Published in 2021 at "Smart Materials and Structures"
DOI: 10.1088/1361-665x/ac085a
Abstract: Air-coupled ultrasonic techniques based on rapid and contactless inspection are useful for various applications, such as ranging finding, surface profile measurement, and non-destructive evaluation. However, impedance matching issues between air and piezoelectric materials lead to… read more here.
Keywords: metasurfaces efficient; acoustic metasurfaces; ultrasonic transducers; matching non ... See more keywords
Bidirectional asymmetric acoustic focusing with two flat acoustic metasurfaces
Sign Up to like & getrecommendations! Published in 2018 at "Chinese Physics B"
DOI: 10.1088/1674-1056/27/12/124302
Abstract: We design an asymmetric transmission system (ATS) with two flat acoustic metasurfaces (AMs) to yield bidirectional asymmetric acoustic focusing (BAAF). The acoustic waves could be focused on both sides of the ATS with different focal… read more here.
Keywords: flat acoustic; bidirectional asymmetric; asymmetric acoustic; acoustic focusing ... See more keywords
Acoustic metasurfaces with rapid change profiles
Sign Up to like & getrecommendations! Published in 2017 at "Journal of the Acoustical Society of America"
DOI: 10.1121/1.4987595
Abstract: Acoustic metasurfaces with subwavelength unit cells modulating the phase of sound wave were developed to realize beam forming, steering, focusing, and recently carpet cloaking. However, these metasurfaces were used for small phase gradient applications and… read more here.
Keywords: acoustic metasurfaces; phase gradient; change profiles; rapid change ... See more keywords
Wavefront manipulation by acoustic metasurfaces: from physics and applications
Sign Up to like & getrecommendations! Published in 2018 at "Nanophotonics"
DOI: 10.1515/nanoph-2017-0122
Abstract: Abstract Molding the wavefront of acoustic waves into the desired shape is of paramount significance in acoustics, which however are usually constrained by the acoustical response of naturally available materials. The emergence of acoustic metamaterials… read more here.
Keywords: wavefront manipulation; manipulation acoustic; physics; acoustic waves ... See more keywords