Micromachined porous polymer for bubble free electro-osmotic pump

作者: Senol Mutlu , Cong Yu , P. Selvaganapathy , F. Svec , C.H. Mastrangelo

DOI: 10.1109/MEMSYS.2002.984050

关键词: Surface micromachiningElectronic engineeringSpark plugBubblePorosityBack pressureMaterials scienceWaferNeckingComposite materialPorous medium

摘要: A novel porous polymer was microfabricated to serve as a plug for new device, the electro-osmotic pump (pp-EOP). The eliminates any back pressure effects while enhances flow in channel. pp-EOP batch fabricated by surface micromachining on top of silicon wafer. device is driven periodic, zero-average injected current signal at low frequencies producing bubble-free with reversible net movement. Testing produced an average water-air interface velocity 1.8 /spl mu/m/s 0.8 Hz. increased 4.8 and 13.9 necking channel size.

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