Interdigitated chemical sensors, and methods of making and...

Chemistry: electrical and wave energy – Apparatus – Electrolytic

Reexamination Certificate

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Details

C204S400000

Reexamination Certificate

active

07837844

ABSTRACT:
The present invention relates to the field of chemical detection. More specifically, the invention provides devices that can detect various target analytes (e.g., chemicals and/or biological materials) present in an environment by adsorption or absorption of the target analyte(s) to or in a chemical sensing material such that an electrical parameter (e.g., capacitance, resistance, etc.) of the chemical sensing material is altered in a manner detectable by circuitry associated with the sensing electrode pair coated with the chemical sensing material. Here, the sensing electrode pair(s) of the devices of the invention are suspended over an inert substrate via one or more posts used to space the electrodes from the substrate.

REFERENCES:
patent: 5164319 (1992-11-01), Hafeman et al.
patent: 5312762 (1994-05-01), Guiseppi-Elie
patent: 5391272 (1995-02-01), O'Daly et al.
patent: 5682788 (1997-11-01), Netzer
patent: 5880552 (1999-03-01), McGill et al.
patent: 6535822 (2003-03-01), Mansky et al.
patent: WO 93/03355 (1993-02-01), None
patent: WO 95/32422 (1995-11-01), None
patent: WO 98/29740 (1998-07-01), None

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