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In this contribution, we present a concept for simultaneous filtration and pumping solely realized with a single polymer-based foam membrane. An open-porous foam with a gradient in pore size, which essentially resembles a nozzle-diffuser structure, is integrated into the center of a flexible poly(dimethylsiloxane) membrane, which is placed into a small fluid cavity with symmetric inlet and outlet...
We present the application of diamagnetic levitation of a small floater magnet for the realization of a magnetically actuated membrane actuator in polymer composite technology. Following this approach the neutral position of the actuating membrane can be adjusted by diamagnetically stabilized levitation and the actuation of the membrane is induced by an integrated coil which is driven by an ac-signal...
We present a natural convection microfluidic loop, based on localized microwave heating of fluids, as a concept for driving flows in 3-dimensional lab-on-a-chip architectures. As a proof of principle we fabricated test devices by using standard power RF-components, originally developed for mobile wireless communication applications, which are combined with Polydimethylsiloxane (PDMS) imprint technology...
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