How does a gas lighter work?

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Piezoelectricity [Basic Principles Of GAS-LIGHTER ] Piezoelectric materials exhibit both a direct and a reverse piezoelectric effect. The direct effect produces an electrical charge when a mechanical vibration or shock is applied to the material, while the reverse effect creates a mechanical vibration or shock when electricity is applied. Piezoelectric substances are polycrystalline materials consisting of lead zirconate titanate, or PZT. Lead (Pb), zirconium (Zr) and titanium (Ti) are combined with additives to achieve desired levels of performance. A PZT component possesses the unique ability to generate vibrations based on its shape when electricity is applied, and to generate electricity upon exposure to mechanical vibration or shock.