Ultrasound Transducer (Part 1) Piezoelectric Material and Matching Layer | Ultrasound Physics #9
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- čas přidán 29. 06. 2024
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Let's look at the ultrasound transducer. In this talk we will describe the different constituents of the ultrasound probe. Our focus, for part 1, will be on the piezoelectric material and the matching layer.
In the next talk we will discuss, the damping block, quality factor and the probe wiring.
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How does a single piezoelectric material doing two works?
why is matching layer thickness 1/4 the wave length is optimal?
to decrease the attenuation?
WHY the match layer should be 1/4 fo the PTZ？
According to an article on the "Probo medical" website, "Why Does an Ultrasound Probe Need Matching Layers?", matching layers with a size larger than 1/4 of the wavelength of the ultrasound attenuate the ultrasound more. I guess it has something to do with the amount of ultrasound that is absorbed by the matching layer depending on the wavelength/frequency of the ultrasound. Though it could definitely be something else.
Nxt part plz
what is a material used for matching layer ?
Epoxy resin and aluminium powder
can we use FR04 as matching layer???? and if yes, then what should be the thickness of matching layer if thickness of piezo crystal is 0.5mm?