An Out-of-Plane Operated Soft Engine Driving Stretchable Zone Plate for Adjusting Focal Point of an Ultrasonic Beam.

Sensors (Basel) · 2019 · PMC6767097 · PMID 31487858

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an increasing trendno p-value reported

The magnitudes of maximum intensities exhibit an increasing trend from approximately 35 to 135 while the zone number rises from 5 to 11. 2.4.

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