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公开(公告)号:US20240019562A1
公开(公告)日:2024-01-18
申请号:US18352700
申请日:2023-07-14
Applicant: Washington University
Inventor: Zhongtao Hu , Hong Chen
IPC: G01S7/524 , B33Y50/00 , B29C64/386
CPC classification number: G01S7/524 , B33Y50/00 , B29C64/386 , B33Y70/00
Abstract: A method of fabricating a binary metasurface for producing an ultrasound Airy beam for underwater ultrasound applications is provided. The method includes generating an amplitude distribution of an Airy beam at a frequency, and converting the amplitude distribution into a binary phase profile. The method also includes generating a 3D printing design of a binary metasurface based on the binary phase profile, wherein the binary metasurface includes ridges and grooves defined by neighboring ridges, a ridge having a thickness corresponding to a phase delay of π/2 of the Airy beam between water and a 3D-printable material. The method further includes additively manufacturing the binary metasurface with the 3D-printable material based on the 3D printing design.