Low-cost multi-laminate sensors

• US 6,513,362 B1
• Filed: 01/03/2001
• Issued: 02/04/2003
• Est. Priority Date: 10/10/1997
• Status: Expired due to Term

• Current Assignee: PPG Industries Ohio Incorporated (Nouryon BV)
• Original Assignee: NanoProducts Corporation (Nouryon BV)
• Inventors: Vigliotti, Anthony, Yadav, Tapesh, Kostlecky, Clayton
• Primary Examiner(s): Raevis, Robert R.
• Application Number:
  US09/753,806
• Time in Patent Office: 762 Days
• Field of Search: 73/233.1, 73/310.5, 73/232, 73/290.5, 73/250.1, 324/663, 324/664, 361/280, 427/58, 427/79, 427/126.1, 427/126.6, 338/34, 338/35, 422/98, 204/424, 204/425
• US Class Current: 73/31.05
• CPC Class Codes: B82Y 25/00 Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: B82Y 5/00 Nanobiotechnology or nanomedicine, e.g. protein engineering or drug delivery
• CPC Class Codes: G01N 27/12 of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid , for detecting components in the fluid
• CPC Class Codes: G01N 33/0031 comprising two or more sensors, e.g. a sensor array electrochemical electrode arrays G01N27/27

Abstract

Sensors for monitoring environmental variables such as chemical composition are disclosed. These low-cost sensors comprise multiple layers in a laminated stack. Very high numbers of sensing layers (e.g., 500) may be incorporated into a single laminated sensor device. The sensors may be produced from nanostructured materials. Additionally, multilayer magnetic, optical, photonic, thermal and biomedical sensors are disclosed.

Claims

1. A chemical sensor comprising:

a laminated structure comprising a plurality of layers of sensing material and a plurality of layers of conductive material, wherein the plurality of layers of sensing material alternate with the plurality of layers of conductive material, and wherein the sensing material of each of the plurality of layers of sensing material is selected to exhibit a change in an electrical property when exposed to carbon monoxide.

2. The sensor of claim 1 wherein the sum total of the layers of sensing material and the layers of conductive material of the laminated structure comprises at least 3 layers.

3. The sensor of claim 1 wherein at least a portion of the layers of the sensing material are exposed to an environment surrounding the sensor.

4. The sensor of claim 3 wherein the layers of the sensing material interact with the environment causing an electrical response that is measured using the plurality of layers of conductive material.

5. The chemical sensor of claim 1 wherein the sensing material comprises a layer that is less than 10 microns.

6. The chemical sensor of claim 1 wherein the sensing material comprises a layer that is less than 1 microns.

7. The chemical sensor of claim 1 wherein the sum total of the layers of sensing material and the layers of conductive material of the laminated structure comprises at least 5 alternating layers.

8. A chemical sensor comprising:

a laminated structure comprising layers of sensing material and conductive material, wherein the sensing material physically interacts carbon monoxide to provide a change in the sensing material'"'"'s properties, and the laminated structure is arranged such that the change in the sensing material'"'"'s properties are detectable using the layers of conductive material.