Generate Electricity Using Piezoelectric Effect
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Piezoelectricity is the ability of certain materials to generate an electric charge in response to applied mechanical stress. This effect is reversible, as materials will mechanically deform when an electric field is applied. Common piezoelectric materials include quartz, silk, enamel, and barium titanate. When a mechanical force distorts the material, it causes the ions within the crystals to polarize. Releasing the force causes the flow of ions and generation of an electric current. Applications of piezoelectric materials include quartz watches, vibration sensors for train wheels, dance floors that convert kinetic energy to electricity, piezoelectric microphones, and medical ultrasound devices.
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Generate Electricity Using Piezoelectric Effect
- 1. Piezoelectric Effect By B SRI JYOTHSNA 15011D2003 JNTU, HYDERABAD Soft Skills Lab - Presentation
- 3. Ability to generate an electric charge in response to applied mechanical stress. ‘Piezo’ derived from Greek word ‘piezein’ meaning “push”
- 8. Mechanical force Electricity Piezoelectric effect Electricity Mechanical strain Converse of Piezoelectric effect
- 9. Piezoelectric Materials Crystals which acquire a charge when compressed, twisted or distorted and vice versa Quartz Silk Enamel Barium Titanate(BaTiO3)
- 10. Principle behind this effect ??
- 11. When a mechanical force like a vibration is applied on the material it polarizes. when the force is released flow of ions takes place and electric current flows through the crystal.
- 12. Applications
- 13. Converse of Piezoelectric effect is used in Quartz watches
- 17. To detect wear in train wheels by detecting the change in vibration behavior of the entire wheel by generating mode shapes
- 18. Gyms, dance floors etc can be laid with crystals below the floor or tiles. This energy can be used to power the equipment in the place.
- 20. Piezoelectric Microphone - sound sensor - sound waves bend the crystal - creates a changing voltage.
- 21. Used in ultrasonic transducers - medical ultrasound imaging - Non Destructive Tests in constructions
- 22. Piezoelectricity is a source of “Green energy” Flexible Piezo materials withstand large deformations Conclusion
- 23. Thank You!
Editor's Notes
- the materials undergo strain or deformation when an electric field is applied.
- these matrials can change mechanical force into electricity and electric current into mechanical force.
- Here the electric field applied across the material produces a mechanical movement in the watch i.e., the movement of the needle.
- when the piezoelectric material is compressed Electric current flows across small gap creating a spark that ignites the fuel.