Resonant Sensor Receiving Layer Polymer Hydrocarbon Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing resonant sensors fail to detect hydrocarbons at low concentrations in systems with high sensitivity and selectivity, particularly in exhalation and skin gases.
Innovation Solution
A resonant sensor with a receiving layer containing a polymer having a specific repeating unit, represented by Formula (1), which enhances the detection capability of hydrocarbons by improving sensitivity and selectivity through adsorption and molecular recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a porphyrin-based compound is used in the receiving layer, then the sensor can detect hydrocarbons, but the sensitivity and selectivity for low concentration detection are insufficient
Solution Approach 1:
The patent changes the chemical structure parameters of the receiving layer material by introducing a specific repeating unit with alkyl groups (R1) and variable substituents (R2), transforming the porphyrin-based compound into a polymer with enhanced molecular recognition capabilities. This structural parameter change enables the sensor to detect hydrocarbons at concentrations as low as 1 vol ppt, resolving the contradiction between measurement precision and detectable concentration.
Solution Approach 2:
The patent creates a composite polymer material combining porphyrin-based compounds with specific repeating units that have enhanced affinity for hydrocarbon molecules. This composite structure integrates the advantages of porphyrin compounds with the selective binding properties of the designed repeating unit, achieving both high sensitivity and selectivity for low concentration hydrocarbon detection in complex matrices like exhalation and skin gases.
2Measurement precision
If a porphyrin-based compound is used in the receiving layer, then the sensor can detect hydrocarbons, but the selectivity for specific hydrocarbon components is insufficient
Solution Approach 1:
The patent introduces local quality variations in the receiving layer by incorporating repeating units with specific alkyl groups (R1) and variable substituents (R2) at defined positions. This local structural differentiation enables the polymer to recognize and bind specific hydrocarbon components (such as isoprene, toluene, and other volatile organic compounds) with high selectivity, allowing the sensor to distinguish between different hydrocarbon species in complex gas matrices.
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 sensor achieves high sensitivity and selectivity in detecting hydrocarbons at low concentrations, effectively identifying components in exhalation and skin gases, even at concentrations as low as 1 vol ppt to 1 vol ppm.
Implementation Method 1
a receiving layer that contains a polymer having a repeating unit represented by Formula (1)
Implementation Method 2
that detects a change in resonance frequency using a quartz crystal micro-balancing method
Data Source
AI summary
An object of the present invention is to provide a resonant sensor having excellent sensitivity and selectivity with respect to a component to be detected that is contained at a low concentration in the system. A resonant sensor of the present invention has a receiving layer that contains a polymer having a repeating unit represented by Formula (1). In Formula, R1 represents an alkyl group. A plurality of R1's may be the same as or different from each other. R2 represents a hydrogen atom, an alkyl group, or an aryl group.