2011•Physics ExperimentationRequires access
Directivity of multi-element phase-controlled focus transducer
Yi Tan
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Abstract
Effects of the basic frequency,the number of multi-element transducers,and the space between transducers on the directivity of multi-element linear transducer array were studied.The results showed that the directivity of multi-element linear transducer array was optimal when the dominant frequency was 2～5 MHz,the number of multi-element transducers was 5～15,and the space between transducers was 0.3～0.9 mm.These conditions were favored for well detecting and imaging of photoacoustic signals.