The piezoelectric effect arises from the asymmetric arrangement of atoms in certain crystalline ... These transducers are used in medical imaging (e.g., ultrasound), non-destructive testing, and ...

That's because the piezoelectric materials used for sonar and ultrasound applications are mostly ferroelectric. And like all ferroelectric materials, they exhibit a phenomenon called spontaneous ...

Dr. Lewin’s current interests are primarily in the field of biomedical ultrasonics including the design and testing of piezoelectric transducers and sensors, power ultrasonics, ultrasonic exposimetry, ...