electroosmotic flow

Electroosmotic flow (EOF) is the movement of liquid through tiny channels or pores caused by an electric field. When a voltage is applied across a vessel containing an electrolyte solution, it interacts with charged surfaces lining the channels. This interaction creates a layer of charged particles that move along with the electric field, dragging the surrounding liquid with them. As a result, the fluid flows in a specific direction without external pumps. EOF is commonly used in small-scale applications like microfluidic devices and scientific analysis, providing precise control over fluid movement in confined spaces.