Piezo Power Under pressure, crystals live up to their electric potential

Piezoelectric crystals are materials that generate electricity when squeezed and move when an electric current is applied. Discovered in the 1800s, they have been used in various applications. Today, they are crucial in structural health monitoring, helping ensure the safety of large structures like bridges and airplane wings. In medicine, they can power devices like pacemakers without the need for battery replacement surgeries. Future innovations include integrating these crystals into fabrics and shoes to charge small devices. They are already present in cars, homes, and toys, playing a vital role in everyday technology.

What is the basic principle behind piezoelectric crystals?

• They change color when exposed to air.

• They produce electricity when pressure is applied.

• They emit light when squeezed.

• They generate heat when compressed.

How do piezoelectric crystals contribute to structural health monitoring?

• They prevent structures from vibrating.

• They provide a visual inspection of structures.

• They power sensors that detect structural integrity.

• They repair cracks in structures automatically.

What is a potential benefit of using piezoelectric crystals in medical devices?

• They eliminate the need for surgical battery replacements.

• They enhance the speed of medical procedures.

• They reduce the size of medical devices.

• They improve the accuracy of medical diagnostics.

In what way are piezoelectric crystals being integrated into everyday items?

• They are used to enhance sound quality in speakers.

• They are applied as a coating for waterproofing.

• They are embedded in fabrics and shoes for charging devices.

• They are used to create holographic displays.

How do piezoelectric crystals function in children's toys?

• They make the toy move autonomously.

• They change the toy's color when moved.

• They light up the toy when touched.

• They power a piezoelectric speaker for sound.