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US 6,010,316 AGranted
Acoustic micropump
AssigneeThe Board of Trustees of the Leland Stanford Junior University
InventorsMatthew Isaac Haller, Butrus Thomas Khuri-Yakub
Life of this patent
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Abstract
A micropump in which a fluid is pumped by the interaction of longitudinal acoustic waves and the fluid in the microchannel. The micropump having an acoustical transducer responsive to a high-frequency input and directing a longitudinal acoustic wave into the channel which induces a pressure gradient. The fluid in the channel flowing in the direction of travel of the acoustic wave in the channel.
Claims9
An acoustic micropump for pumping fluids comprising:
- a pumping channel having a cross sectional area between 6.25 .mu.m.sup.2 and 2.25 mm.sup.2 for conveying the fluid;
- and
- an acoustical transducer responsive to a high-frequency input for generating and directing longitudinal acoustic waves having a frequency between 1 GHz and 1 MHz, respectively, into one end of said channel whereby the longitudinal acoustic waves induce a pressure gradient in fluid disposed in the channel, said pressure gradient forcing the liquid in the channel to flow in the direction of travel of the longitudinal acoustic waves.
Dependencies are inferred from the claim text.