Engineering Commons^™

Hydrodynamic Focusing Micropump Module With Pdms/Nickel-Particle Composite Diaphragms For Microfluidic Systems, Jeonghwan Kim

LSU Master's Theses

In this research, a rapid prototype of multi-fluidic speed-modulating (MFSM) micropump which enables modulation of hydrodynamic focusing in micro-fluidic flow has been designed, fabricated, and characterized. The size of the entire module is 33 mm x 25 mm x 8 mm and comprises of three MFSM micropumps to achieve hydrodynamic focusing. These pumps are simultaneously operated by the same actuation source. Each micropump consists of Tesla-type valves in the bottom layer and PDMS/Ni-particle composite (PNPC) diaphragm in the middle layer. The deflection of the diaphragm is obtained by the external pneumatic force, and the permanent magnet controls the displacement resulting …