electroosmotic pumping

Electroosmotic pumping uses an electric field to move liquids through tiny channels or capillaries. When a voltage is applied, it causes charged particles in the liquid near the channel walls to move, creating a flow of the entire fluid. This process is efficient for precise fluid control without moving parts, making it useful in microfluidic devices and medical diagnostics. Essentially, an electric force drives the liquid, allowing for controlled and steady fluid movement at small scales.