Self-Focusing Transducers
Acoustic Wave
Herausgegeben: Mikhayhu, Alain Sören
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Acoustic waves emitted by ultrasonics transducer crystals exhibit a property known as self-focusing (or natural focusing). Note that this is distinct from the electronically controlled focusing employed in diagnostic ultrasound devices which employ arrays of transducers. The self-focusing effect exists even for a single crystal. Self-focusing refers to the narrowing of the ultrasonic beam in the near-field. The effect occurs because if the ultrasound wave generated cr...
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Acoustic waves emitted by ultrasonics transducer crystals exhibit a property known as self-focusing (or natural focusing). Note that this is distinct from the electronically controlled focusing employed in diagnostic ultrasound devices which employ arrays of transducers. The self-focusing effect exists even for a single crystal. Self-focusing refers to the narrowing of the ultrasonic beam in the near-field. The effect occurs because if the ultrasound wave generated crystal is coherent, edges of the emitting surface generate wavelets that constructively interfere with plane wave generated.
