×

Electroosmotic flow controlled microfluidic devices

  • US 6,406,605 B1
  • Filed: 05/08/2000
  • Issued: 06/18/2002
  • Est. Priority Date: 06/01/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A fluidic module comprising:

  • a) a fluid-flow channel having a port;

    b) a diaphragm valve having;

    (1) a flexible and fluid-impermeable diaphragm disposed in fluid communication with said port; and

    (2) an electroosmotic-flow membrane having two sides and disposed contiguous with said diaphragm;

    c) a reservoir containing an electrolyte in fluid communication with said membrane;

    d) a cathode disposed on one of said two sides of said membrane; and

    e) an anode disposed on the other of said two sides of said membrane such that, when a voltage is applied across said anode and said cathode, said electrolyte is transported through said membrane applying fluid pressure against said diaphragm flexibly moving said diaphragm relative to said port of said channel.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×