Abstract
Syringe pump pipetting system uses an air gap to separate sample liquid and system water. To investigate fluid dynamics including elasticity of bubble and damper of system water and tube of this pipetting system, we developed a high-speed gas-liquid interface visualization system to understand the motion of the liquid in a narrow pipe. To predict these dynamics, we developed a simulation method applying a lumped parameter system to use as a tool to see how their fluidic parameter works. Experimental and Simulation results show that after the syringe pump finished its motion, there are still exists gas-liquid interface oscillation, and the tube length has big influence on its behavior.
