Acoustic Diode May Improve Ultrasound Images, Diagnosis, Therapy
Most people know about ultrasound through its role in prenatal imaging: those grainy, grey outlines of junior constructed from reflected sound waves. A new technology called an acoustic diode, envisioned by researchers at Nanjing Univ., may dramatically improve future ultrasound images by changing the way sound waves are transmitted.
In the journal Applied Physics Letters, which is produced by American Institute of Physics Publishing, the scientists describe the theoretical framework for an acoustic diode — a device that achieves a one-way transmission of sound waves much the same as an electrical diode controls the one-way transmission of electrical impulses.
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