Protonated Conductive Polymer Sensor for Airborne Contaminant Detection

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Solution Overview

Problem

Current technologies lack real-time monitoring solutions for hazardous airborne contaminants like nicotine and formaldehyde, requiring complex laboratory procedures and large air sampling devices that impair immediate feedback.

Innovation Solution

Development of systems and sensing devices using protonated, electrically conductive materials that bind with airborne contaminants, generating signals indicative of their presence, allowing for real-time detection and notification of abnormal contaminant levels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional air sampling devices and laboratory procedures are used to detect airborne contaminants, then measurement precision can be achieved, but device complexity and loss of time increase significantly

Engineering Contradiction:
Improvedetection accuracyVSAvoidsampling device complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent extracts the detection function from complex laboratory procedures and concentrates it into a simple sensor device containing protonated conductive polymer material that directly binds with airborne contaminants, eliminating the need for complex sampling apparatus and laboratory analysis

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces mechanical/physical sampling systems with chemical sensing mechanisms, where the protonated conductive polymer material chemically binds with contaminants and generates electrical signals, substituting mechanical air sampling with electrochemical detection

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If conventional air sampling devices and laboratory procedures are used to detect airborne contaminants, then measurement precision can be achieved, but loss of time increases due to complex procedures

Engineering Contradiction:
Improvedetection accuracyVSAvoiddetection time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The sensor device performs self-detection and self-signal generation, where the protonated conductive polymer material automatically binds with contaminants and produces electrical signals without requiring external laboratory processing, enabling immediate real-time detection

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent extracts the time-consuming laboratory procedures from the detection process and replaces them with direct in-situ sensing, allowing contaminants to be detected at the source without transport or complex analysis delays

Inventive Principle:
Principle #2Taking out (Extraction)

3Loss of time

If real-time detection is implemented, then loss of time is reduced and productivity improves, but device complexity increases

Engineering Contradiction:
Improvefeedback timeVSAvoidsensing device complexity
Core Design Contradiction:
Loss of timeVSDevice complexity

Solution Approach 1:

The patent changes the physical-chemical parameters of the sensing material by using protonated conductive polymers with specific properties that enable real-time detection through direct binding and electrical signal generation, achieving rapid response without complex device architecture

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent employs composite protonated conductive polymer materials that combine binding affinity with electrical conductivity, creating a single integrated sensing medium that provides real-time detection capability without requiring separate components for sampling, detection, and signal generation

Inventive Principle:
Principle #40Composite materials

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables real-time monitoring and feedback, encouraging avoidance of contaminants and closure of their source processes, improving individual health and safety by providing immediate and accurate detection of hazardous substances.

Implementation Method 1

a protonated, electrically conductive sensing material with an affinity for binding with, and capable of being deprotonated by, the airborne contaminant

Methodology Applied
Scientific EffectDeprotonation:

Implementation Method 2

a protonated, electrically conductive sensing material with an affinity for binding with, and capable of being deprotonated by, the airborne contaminant

Methodology Applied
Scientific EffectAdsorption: Adsorption

Implementation Method 3

Electronics of the device measure a property of the sensing material that is sensitive to deprotonation and generate signals indicative of the airborne contaminant

Methodology Applied
Scientific EffectElectrical conductivity change: Conduction (electrical)

Data Source

PatentUS11366077B2Systems, sensing devices and methods for detection of airborne contaminants
Publication Date: 2022.06.21 TRUSTEES OF DARTMOUTH COLLEGE THE
  • US11366077B2 patent drawing
  • US11366077B2 patent drawing
  • US11366077B2 patent drawing

AI summary

A device for detecting airborne contaminants includes a protonated, electrically conductive sensing material with affinity for binding with, and capable of being deprotonated by, the airborne contaminant. Electronics measure a property of the sensing material that is sensitive to deprotonation and generates signals indicative of the airborne contaminant. A method for detecting airborne contaminants includes: determining a property change of the protonated, electrically conductive material; and determining presence of the airborne contaminant based on the change. A system for detecting airborne contaminants includes: a data center in remote communication with multiple sensing devices each having: protonated, electrically conductive sensing material with affinity for binding with, and capable of being depronated by, an airborne contaminant, and electronics for relaying signals indicative of a sensing material deprotonation property to the data center; and wherein a user associated with a sensing device is notified of an abnormal level of the airborne contaminant.