These prototype devices have been used as drone payload release mechanisms and for protecting drugs in high security medical carts.  They can be made very thin (less than 2 mm) and lightweight (less than 1 ounce) and can use very little energy to actuate.  They can be used across a wide range of voltages, from 3.7 Volts – 30 Volts.  They can be actuated with as little as 5 watts of power and can be made to hold in the actuated state with roughly 15% of the actuation power.