Pneumatically Pumping Fluids Radially Inward On Centrifugal Microfluidic Platforms in Motion

摘要

This paper describes a pumping technique applicable toncentrifugal microfluidic platforms, involving the use of anregulated stream of compressed gas to pump liquidnradially inward and toward the center of the platform whilenspinning. This technique provides a noncontact methodnfor pumping fluids and is highly efficient, requiring onlynapproximately 60 s to reach completion. This pumpingnoperation can be attained with an applied gas flow rate ofn58.8 L min-1, while the platform is rotated at frequenciesnless than 180 rpm (3.0 Hz).