For comparison, high-frequency transducers use which characteristics?

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Multiple Choice

For comparison, high-frequency transducers use which characteristics?

Explanation:
In thickness-mode transducers, the resonance frequency is set by the speed of sound in the crystal and the crystal’s thickness, roughly f ≈ v_pzt / (2t). To achieve higher frequency, you make the crystal thinner (reducing t), and you can also use a material with a higher acoustic velocity (increasing v_pzt). That combination—thinner PZT and higher speeds—produces the higher frequencies needed for better axial resolution.

In thickness-mode transducers, the resonance frequency is set by the speed of sound in the crystal and the crystal’s thickness, roughly f ≈ v_pzt / (2t). To achieve higher frequency, you make the crystal thinner (reducing t), and you can also use a material with a higher acoustic velocity (increasing v_pzt). That combination—thinner PZT and higher speeds—produces the higher frequencies needed for better axial resolution.

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