Manufacture of a microsensor device and a method for evaluating the function of a liquid by the use thereof

• US 20030170913A1
• Filed: 12/11/2002
• Published: 09/11/2003
• Est. Priority Date: 09/30/1997
• Status: Abandoned Application

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Fukushima, Hitoshi, Shimoda, Tatsuya
• Application Number:
  US10/317,003
• Publication Number:
  US 20030170913A1
• Time in Patent Office: Days
• US Class Current: 436/518
• CPC Class Codes: B01J 2219/00378 Piezoelectric or ink jet dispensers
• CPC Class Codes: B01J 2219/00653 the compounds being bound to electrodes embedded in or on the solid supports
• CPC Class Codes: B01J 2219/00659 Two-dimensional arrays
• CPC Class Codes: B41J 2/01 Ink jet
• CPC Class Codes: C12Q 1/6834 Enzymatic or biochemical coupling of nucleic acids to a solid phase
• CPC Class Codes: C40B 60/14 for creating libraries
• CPC Class Codes: G01N 33/54366 Apparatus specially adapted for solid-phase testing

Abstract

The object of this invention is to provide a method by which to form molecule recognizing films on sensor electrodes efficiently, within a short period, uniformly and in a high quality state. Another object of this invention is to provide a method by which to accurately introduce a vast number of biological samples for evaluation to the plural minute sensor electrode dots within a short period and efficiently.

In order to form organic thin films on electrodes, a solution of a material for the organic thin film is accurately printed via an ink-jet onto the surface of microelectrodes as required, thereby producing a high density array of microelectrodes. Further, a solution of a sample substance or a liquid substance to be sensed is ejected into air via an ink-jet nozzle to fall to the surface of organic thin membranes on the microelectrodes so that the sample is evaluated.

Claims

1. A sensor comprising.

an electrode;

a molecule recognizing film formed on the electrode; and

a transducing circuit to transduce information recognized by the molecule recognizing film into electric signals,

wherein the molecule recognizing film is polyethylenedioxythiophene doped with polystyrene sulfonate.

2. The sensor according to claim 1, wherein the transducing circuit comprises a TFT.

3. A sensor comprising:

electrodes;

an electro-conductive polymer formed on the electrodes; and

a transducing circuit to transduce a change in the electric characteristic when sensing material is formed on the electro-conductive polymer into generating electric signals.

4. The sensor according to claim 3, wherein the electrodes include a pair of electrodes on which an electro-conductive polymer is formed.

5. The sensor according to claim 3, wherein the electro-conductive polymer includes an enzyme or an antibody.

6. A sensor comprising.

an electrode;

a self-assembly film formed on the electrode; and

a transducing circuit to transduce a change in the electric characteristic when sensing material is formed on the self-assembly film into generating electric signals.

7. The sensor according to claim 6, wherein the self-organizing film is mono-molecular film.

8. A sensor comprising:

an electrode;

a gold formed on the electrode;

a film formed by applying thiol onto the gold; and

a transducing circuit to transduce a change in the electric characteristic when sensing material is formed on the film into generating electric signals.

9. The sensor according to claim 8, wherein the electrode is formed on a plastic substrate.

10. The sensor according to claim 8, wherein the transducing circuit comprises a TFT.