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US 2026/0192334 A1Published application
Acoustic stacks for ultrasound transducers and methods of making the same
AssigneeGE Precision Healthcare LLC
InventorAbhijeet Bhatt
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Abstract
Acoustic stacks for ultrasound transducers, and methods of making the same, are provided. In one example, an acoustic stack includes a piezoelectric layer, a matching layer directly disposed on a first side of the piezoelectric layer, and a dematching layer directly disposed on a second side of the piezoelectric layer, the first side opposite the second side. One or more layers may be deposited via thermal spray deposition.
Claims20
An acoustic stack comprising:
- a piezoelectric layer;
- a matching layer directly disposed on a first side of the piezoelectric layer;
- and
- a dematching layer directly disposed on a second side of the piezoelectric layer, the first side opposite the second side.
1 more element
A method comprising depositing a matching layer on a first side of a piezoelectric layer via thermal spray deposition.
A method of preparing an acoustic stack comprising:
- plasma spray depositing a first layer on a substrate, the first layer comprising a composite comprising aluminum, silicon, and graphite;
- disposing a flex circuit on the first layer;
- sputtering a second layer on the flex circuit, the second layer comprising gold;
- electroplating a third layer on the second layer, the third layer comprising nickel;
- thermal spray depositing a fourth layer on the third layer, the fourth layer comprising tungsten carbide;
- electroplating a fifth layer on the fourth layer, the fifth layer comprising nickel;
- thermal spray depositing a sixth layer on the fifth layer, the sixth layer comprising a piezoelectric material;
- plasma spray depositing a seventh layer on the sixth layer, the seventh layer comprising a composite comprising aluminum, silicon, and graphite;
- and
- plasma spray depositing an eighth layer on the seventh layer, the eighth layer comprising polymethyl methacrylate.
7 more elements
Dependencies are inferred from the claim text.