9702 · 24.1
Production and use of ultrasound
Welcome to a deep dive into **ultrasound**, a fascinating application of high-frequency sound waves. In this lesson, we'll uncover how these waves are generated, how they interact with different materials, and why they are such a powerful tool in medical diagnostics, from baby scans to internal organ imaging. This pilot aligns with **Senpai Corner** A Level notes (2025–2027) for topic **24.1**.
Need to know
What you need to know
- Piezo-electric effect is the property exhibited by some nonconducting crystals of becoming electrically polarized when mechanically strained and of becoming mechanically strained when an electric field is applied.
- Piezoelectric crystals are materials that produce p.d. when they are deformed.
- When a p.d. is applied to the crystal it deforms and when revered it expands.
- If an AC is applied to the crystal it will vibrate at the same frequency.
- Quartz is the most common form of piezo crystals.
Explanation
Production and use of ultrasound
- Piezo-electric effect is the property exhibited by some nonconducting crystals of becoming electrically polarized when mechanically strained and of becoming mechanically strained when an electric field is applied.
- Piezoelectric crystals are materials that produce p.d. when they are deformed.
- When a p.d. is applied to the crystal it deforms and when revered it expands.
- If an AC is applied to the crystal it will vibrate at the same frequency.