Lab on a Chip · 2002 · 425 citations · 6 references
EngineeringChemical EngineeringFluid DynamicsMicroelectromechanical SystemsTransport PhenomenaMicrofluidic DevicesMicrofluidic SystemsMicrofluidic TransportMicrofluidicsGravitational Potential Energy ReleaseGravitational Potential TheoryMicrochannel DesignMicrochannel FlowMicrochannel HydrodynamicsMicrofluidic FlowMicrofluidic PumpsPumping Systems
The surface energy present in a small drop of liquid is used to pump the liquid through a microchannel. The flow rate is determined by the volume of the drop present on the pumping port of the microchannel. A flow rate of 1.25 microL s(-1) is demonstrated using 0.5 microL drops of water. Two other fluid manipulations are demonstrated using the passive pumping method: pumping liquid to a higher gravitational potential energy and creating a plug within a microchannel.
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Monolithic Microfabricated Valves and Pumps by Multilayer Soft Lithography
Marc Unger, Hou-Pu Chou, Todd Thorsen et al. · Science · 2000 · 4K citations