20240019562. AIRY BEAM-ENABLED BINARY ACOUSTIC METASURFACES FOR UNDERWATER ULTRASOUND BEAM MANIPULATION simplified abstract (Washington University)

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AIRY BEAM-ENABLED BINARY ACOUSTIC METASURFACES FOR UNDERWATER ULTRASOUND BEAM MANIPULATION

Organization Name

Washington University

Inventor(s)

Zhongtao Hu of St. Louis MO (US)

Hong Chen of St. Louis MO (US)

AIRY BEAM-ENABLED BINARY ACOUSTIC METASURFACES FOR UNDERWATER ULTRASOUND BEAM MANIPULATION - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240019562 titled 'AIRY BEAM-ENABLED BINARY ACOUSTIC METASURFACES FOR UNDERWATER ULTRASOUND BEAM MANIPULATION

Simplified Explanation

The abstract describes a method for fabricating a binary metasurface that can produce an ultrasound airy beam for underwater ultrasound applications. The method involves generating an amplitude distribution of the airy beam and converting it into a binary phase profile. A 3D printing design of the binary metasurface is then generated based on the binary phase profile, with ridges and grooves defined by neighboring ridges. The thickness of a ridge corresponds to a phase delay of ½ of the airy beam between water and a 3D-printable material. The binary metasurface is additively manufactured using the 3D-printable material based on the 3D printing design.

  • The method involves generating an amplitude distribution of an airy beam and converting it into a binary phase profile.
  • A 3D printing design of the binary metasurface is generated based on the binary phase profile.
  • The binary metasurface includes ridges and grooves defined by neighboring ridges.
  • The thickness of a ridge corresponds to a phase delay of ½ of the airy beam between water and a 3D-printable material.
  • The binary metasurface is additively manufactured using the 3D-printable material based on the 3D printing design.

Potential applications of this technology:

  • Underwater ultrasound imaging and sensing
  • Non-destructive testing in underwater environments
  • Marine biology research and exploration
  • Underwater communication systems

Problems solved by this technology:

  • Traditional ultrasound beams have limited focusing capabilities underwater due to the diffraction and scattering effects of water.
  • This technology allows for the fabrication of a binary metasurface that can produce an ultrasound airy beam, which has a non-diffracting and self-healing property, enabling better focusing and imaging underwater.

Benefits of this technology:

  • Improved underwater ultrasound imaging and sensing capabilities
  • Enhanced resolution and depth penetration in underwater environments
  • Increased efficiency and accuracy in non-destructive testing underwater
  • Potential for advancements in marine biology research and underwater communication systems.


Original Abstract Submitted

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 �/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.

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