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Microfabricated structures for facilitating fluid introduction into microfluidic devices

  • US 6,090,251 A
  • Filed: 06/06/1997
  • Issued: 07/18/2000
  • Est. Priority Date: 06/06/1997
  • Status: Expired due to Term
First Claim
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1. A microfluidic system comprising:

  • a substrate having an upper surface, a lower surface, and a microfluidic channel disposed between the upper surface and the lower surface;

    a wall in the substrate bordering a port for receiving a fluid, the port in fluid communication with the channel, the port open at the upper surface and at the lower surface of the substrate, the port having a cross-section capable of inducing sufficient capillary force in the fluid to restrain the fluid within the port; and

    a mechanism to transport the fluid to the port from outside the substrate, the transport mechanism including a pin which extends downward toward the port to transfer fluid on the pin to the port.

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