摘要
You press some material and it generates electricity?Can the energy generate from your walking be turned into electricity to charge your phone?It sounds a bit magical,but that's exactly what the piezoelectric effect does.Piezoelectric materials respond to applied stress and convert energy between mechanical and electrical domains.The piezoelectric effect occurs when a piezoelectric material accumulates electrical charges with applied mechanical stress,while the reverse piezoelectric effect occurs when the electric field is converted to the mechanical strain by a piezoelectric material.Piezoelectric ceramics and crystals commonly used as piezoelectric materials show good piezoelectric property,but they cannot be used in flexible applications due to their rigidity.
