A reversible micro mechanical-latch shock switch by external magnetic field

A reversible passive micro mechanical-latch shock switch made of nickel is designed, fabricated, and tested here. Unlike previous reversible mechanical-latch shock switches, which need built-in micro actuators to unlock the latch, the design proposed here utilizes external magnetic field to unlock the switch after experiencing impact over threshold level. Therefore, the switch is reusable and compact due to no built-in micro actuator.