# Microactuator

A microactuator is a microscopic servomechanism that supplies and transmits a measured amount of energy for the operation of another mechanism or system. As a general actuator, following standards have to be met.

• Large travel
• High precision
• Fast switching
• Low power consumption
• Power free force sustainability

For microactuator, there are two in addition

## Principle of microactuators

The basic principle can be described as the expression for mechanical work
$W=\overrightarrow {F}\cdot \Delta \overrightarrow {r}$
since an actuator is to manipulate positions and therefore force is needed. For different kind of microactuators, different physical principles are applied.