Polymeric Stack-Assembled Micropump With Su-8 Check Valves

Active control of microdroplets and particles in microfluidics

“…These devices can be used as a platform for many of lab-on-a chip applications. [7] (b) micro valve [8] and (c) micro channels in a device for growing stem cells 4 1.3 A microfluidic chemostat used to study the growth of microbial populations [4]. The device contains a high number of pneumatic valves and micro channels 4 1.4 A microfluidic device for protein crystallization, (a) A device in which droplets containing proteins are trapped in wells in the microchannels.…”

“…Micro fluidic components for handling continuous flow: (a) micro pump[7] (b) micro valve[8] and (c) micro channels in a device for growing stem cells.…”

“…7 shows the pulse diagrams and coils configuration to move the droplet in a loop. The circuit is designed with four output channels but only two channels are used.For more convenience in control and accuracy in having same current in each two adjacent coils, the coils are connected in pairs by connecting the center of each two coils together.…”