Method and Apparatus for Detection, Identification and Quantification of Chemical or Biological Material through Modification of Operating Conditions

• US 20160195486A1
• Filed: 01/06/2015
• Published: 07/07/2016
• Est. Priority Date: 01/06/2015
• Status: Abandoned Application

• Current Assignee: Louis Wong, Mahmood Anvar
• Original Assignee: Louis Wong, Mahmood Anvar
• Inventors: Anvar, Mahmood, Wong, Louis
• Application Number:
  US14/590,950
• Publication Number:
  US 20160195486A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01N 27/126 comprising organic polymers
• CPC Class Codes: G01N 27/14 of an electrically-heated body in dependence upon change of temperature
• CPC Class Codes: G01N 33/0031 comprising two or more sensors, e.g. a sensor array electrochemical electrode arrays G01N27/27

Abstract

A sensors reading when exposed to different chemical compounds changes if an operating condition of the sensor such as temperature, pressure, electromagnetic field intensity, light or radiation level is modified and the amount of change is different for different compounds. This invention uses this phenomenon to identify and quantify the concentration of the compound.

Claims

1. We identify compounds from each other using a sensor that is sensitive to those compounds and has different sensitivity to those compounds under different operating conditions by taking multiple readings under different operating conditions.

2. We identify compounds from each other using an array of similar sensors sensitive to several compounds with different sensitivity to those compounds under different operating conditions by operating each element of the array at a different operating condition.

3. We distinguish a larger number of compounds from each other using an array of different sensors, or a mixed array of similar and different sensors, that are sensitive to some or all of those compounds and those sensitivities change as the operating condition of those sensor elements are changed, when we set the operating conditions of each sensor element differently.

4. Multiple measurements using self-heating sensors when applied voltage is modified for each measurement can be used to distinguish different compounds.

5. Multiple measurements using self-heating sensors when duration of applied voltage is modified for each measurement can be used to distinguish different compounds.

6. Successive measurements using self-heating sensors, when the temperature of the sensor as a result of voltage application changes, can be used to distinguish different compounds.