The piezoelectric thin films can be patterned and micromachined by state-of-the-art methods such as lithography and etching. When applied as thin films, the materials are usually deposited on silicon wafers. The materials can be shaped as for example thin films, plates, discs, arrays or multilayer structures. SINTEF offers expertise on piezo-materials applied for a wide range of applications. When the electrical pulse stops, the crystal continues to emit. A transducer can act both as a sensor, receiving a mechanical signal, and as an actuator, creating a mechanical movement or emitting a sound wave. Piezoelectric / ultrasound transducer analysis Performed calculations Finite element equations for piezoelectric analysis Different equations of IEEE and. The piezoelectric crystal can transmit ultrasound waves by being stimulated by electrical pulses. This is called the converse effect and can be used in actuators.Ī component that utilises both the direct and the converse effects is often called a transducer. A movement, strain or mechanical force can be generated by applying an electrical field.This is called the direct effect and is often used in sensors. ![]() Variety of piezoelectric transducers, plates, disks, ultrasound. ![]() An electrical polarisation can be generated by applying a mechanical stress to the material. Piezo sensors pick up the slightest pressure fluctuation and convert them into electric signals.Depending on the type of application, piezoelectric materials can be utilised in two different ways: This is called the piezoelectric effect, and its origin is related to the occurrence of electric dipoles in the material. Certain materials become electrically polarized when subjected to mechanical pressure.
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