Conductive Polymer Biosensor for Direct Concentration Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional biosensors for measuring the concentration of object materials are complex and costly to manufacture, and often require electrochemical analysis, which can be cumbersome and less accurate.
Innovation Solution
A biosensor comprising a substrate, an electrode layer, a conductive polymer layer, and a bio-recognizing element, where the bio-recognizing element is disposed on the conductive polymer layer, allowing for a chemical reaction that decreases conductivity, enabling measurement of the object material's concentration without the need for electrochemical analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional electrochemical analysis or fluorescence analysis methods are used to measure object material concentration, then measurement capability is achieved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent extracts the measurement function from complex electrochemical analysis systems and implements it through a simplified conductive polymer-based sensor. By removing unnecessary components and focusing on the essential interaction between bio-recognizing elements and conductive polymer, the device achieves measurement capability with reduced manufacturing complexity
Solution Approach 2:
The patent replaces complex electrochemical analysis systems with a simpler conductive polymer-based detection system. The measurement function is transferred from elaborate electrochemical instrumentation to a straightforward conductivity change detection in the polymer layer, significantly simplifying the overall device
2Measurement precision
If conventional electrochemical analysis or fluorescence analysis methods are used to measure object material concentration, then measurement capability is achieved, but manufacturing cost increases
Solution Approach 1:
The patent employs a disposable sensor design where the conductive polymer layer and bio-recognizing elements are integrated into a single-use device. This eliminates the need for expensive, complex instrumentation and allows for cost-effective mass production of simple sensor units that can be discarded after single use
3Measurement precision
If conventional electrochemical analysis methods are used, then measurement capability is achieved, but the measurement process becomes cumbersome
Solution Approach 1:
The conductive polymer sensor performs self-detection through intrinsic conductivity changes when bio-recognizing elements bind to target molecules. The polymer automatically transduces the binding event into a measurable electrical signal without requiring external electrochemical analysis instrumentation or complex measurement protocols
4Measurement precision
If conventional electrochemical analysis methods are used, then measurement capability is achieved, but measurement accuracy decreases
Solution Approach 1:
The patent utilizes changes in electrical conductivity parameters of the conductive polymer as bio-recognizing elements bind to target molecules. This direct transduction of molecular binding events into electrical signal changes provides more reliable and accurate measurements compared to conventional electrochemical methods that suffer from interference and complexity
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 biosensor has a simpler manufacturing method, lower costs, and higher accuracy, allowing for straightforward detection of object material concentrations, such as hydrogen peroxide, without relying on electrochemical analysis.
Implementation Method 1
A chemical reaction takes place between the object and the bio-recognizing element, and the chemical reaction decreases the conductivity of the conductive polymer layer
Data Source
AI summary
A biosensor includes a substrate, an electrode layer, a conductive polymer layer and a bio-recognizing element. The electrode layer is disposed on the substrate. The conductive polymer layer is disposed on the electrode layer and partially covers the substrate. The bio-recognizing element is disposed on the conductive polymer layer. A chemical reaction takes place between the object and the bio-recognizing element, and the chemical reaction decreases the conductivity of the conductive polymer layer.