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Impedimetric biosensor and its use for rapid detection of bacterial pathogens in solution

  • US 20050059105A1
  • Filed: 07/21/2004
  • Published: 03/17/2005
  • Est. Priority Date: 07/25/2003
  • Status: Abandoned Application
First Claim
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1. A device for detecting a microorganism which comprises:

  • (a) a holder means with an electrode means;

    (b) a detection sensor mounted on the holder means in contact with the electrical means, the sensor having spaced apart interdigitated electrodes providing a capacitor and with a capture reagent for the microorganism at least between the electrodes, wherein widths of a space between the electrodes and of the electrodes are each about 5 microns or less, and wherein when the microorganism in a liquid is captured by the capture reagent, the detection sensor is interrogated with an electric circuit producing a change of impedance from the detection sensor without the bound microorganism, thereby detecting the presence of the microorganism.

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