Question

How does a piezoelectric actuator control fluidic valves in microfluidic systems?

Answer 1

Piezoelectric actuators are widely used in microfluidic systems to control fluidic valves due to their precise and rapid response characteristics. These actuators utilize the piezoelectric effect, where certain materials generate an electric charge when mechanical stress is applied to them. In the context of microfluidics, piezoelectric actuators are used to create mechanical movements that can be translated into fluidic valve control. Here's how it generally works:

Piezoelectric Material: The actuator is constructed using a piezoelectric material, often a ceramic or polymer. When a voltage is applied across this material, it undergoes a deformation or mechanical displacement