Porous Gas Adsorbent for Sensor Sensitivity
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Solution Overview
Problem
Existing gas sensors with organic materials and conductive particles face limitations in varying electrical resistance values in response to gases, affecting the accuracy and speed of chemical substance detection.
Innovation Solution
A gas adsorbent with a porous structure formed by aggregating insulating particles, conductive particles, and organic material, where the conductive particles are dispersed in the organic material and adhere to the insulating particles, creating a void structure that enhances gas permeability and responsiveness to chemical substances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conductive particles are dispersed in organic material, then the gas sensor can detect chemical substances, but the electrical resistance value does not vary sufficiently in response to gases
Solution Approach 1:
The patent creates a composite structure where conductive particles are embedded in organic material coating on insulating particle surfaces. This composite design combines the gas-adsorbing capability of organic material with the electrical conductivity of conductive particles, enabling both detection accuracy and sufficient electrical resistance variation when gas is adsorbed.
Solution Approach 2:
The patent utilizes the porous structure formed by aggregated insulating particles as the substrate for coating organic material and conductive particles. The porous structure provides high surface area for gas adsorption, enhancing the sensitivity and responsiveness of the gas sensor while maintaining structural stability.
2Strength
If a dense structure is used for the gas adsorbent, then mechanical strength is improved, but gas permeability and adsorption speed decrease
Solution Approach 1:
The patent employs a porous structure formed by aggregated insulating particles with appropriate pore size distribution. This porous architecture provides both mechanical integrity and high gas permeability, allowing rapid gas diffusion to the active coating layers while maintaining structural strength.
Solution Approach 2:
The gas adsorbent is segmented into multiple insulating particles aggregated together, creating a distributed porous network. This segmentation allows gas to access multiple pathways simultaneously, increasing adsorption speed while the aggregated structure provides mechanical strength.
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
The gas adsorbent exhibits increased sensitivity and responsivity to chemical substances, allowing for more accurate and rapid detection by varying electrical resistance values when exposed to gases, improving the performance of gas sensors.
Implementation Method 1
when the chemically sensitive polymer adsorbs a volatile organic compound in a gas
Data Source
AI summary
A gas adsorbent includes a plurality of adsorbent particles. The plurality of adsorbent particles are aggregated together to form a porous structure. Each of the adsorbent particles includes: an insulating particle; and a plurality of conductive particles and an organic material, all of which adhere to a surface of the insulating particle.