Ultrasonic subwavelength acoustic focusing and imaging using a 2D membrane metamaterial
A metasurface or 2D metamaterial composed of a membrane array can support an interesting acoustic wave field. These waves are evanescent in the direction normal to the array and can propagate in the immersion fluid immediately above the metasurface. These waves are a result of the resonant membrane...
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Georgia Institute of Technology
2016
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| Online Access: | http://hdl.handle.net/1853/54867 |