Biosensor Electrode Electron Conducting Molecules Signal-to-Noise Ratio
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Solution Overview
Problem
Current biosensors, particularly electrochemical ones, face limitations due to low signal-to-noise ratios, making accurate detection of target molecules challenging.
Innovation Solution
The development of sensors that utilize electrodes treated with electron conducting molecules and probes conjugated with additional electron conducting molecules, such as antibodies linked to pyridine compounds or polyaniline polymers, to enhance signal detection by amplifying electrical field changes when target molecules bind.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electrochemical biosensors use a catalyst as a probe, then the biosensor can detect target molecules, but the signal is low resulting in poor signal-to-noise ratio
Solution Approach 1:
The patent uses composite materials by combining electron conducting molecules (such as pyridine compounds, polyacetylene polymers, azole compounds, or polyaniline polymers) with probe molecules (such as antibodies) to create a hybrid material system. This composite structure on the electrode surface enhances electron transfer efficiency and amplifies the detection signal, thereby improving the signal-to-noise ratio while maintaining detection reliability.
Solution Approach 2:
The patent changes the electrical and electronic parameters of the electrode surface by treating it with electron conducting molecules and conjugating probes with additional electron conducting molecules. This modification alters the electron transfer kinetics and electrical conductivity of the electrode, resulting in enhanced signal generation and improved signal-to-noise ratio for target molecule detection.
2Measurement precision
If conventional biosensors are used, then detection can be performed, but the signal generation is insufficient for accurate detection of target molecules
Solution Approach 1:
The patent replaces conventional catalytic mechanisms with an electron transfer-based detection mechanism. By using electron conducting molecules that facilitate direct electron transfer between the probe-target complex and the electrode, the system generates stronger electrical signals without relying on traditional enzymatic catalysis, thereby improving detection sensitivity and signal generation.
Solution Approach 2:
The electron conducting molecules serve as intermediaries between the probe-target complex and the electrode surface. These intermediary materials facilitate efficient electron transfer and amplify the signal generated upon target binding, enabling more sensitive and accurate detection of target molecules compared to direct electrochemical detection.
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
This approach significantly improves the detection sensitivity, allowing for more accurate identification of biomolecules like HPV16, Enterovirus 71, and Leukocyte cell-derived chemotaxin-2 by increasing the conductivity and signal generation when targets bind to the probes.
Implementation Method 1
an electrode treated with a first electron conducting molecule, and a probe conjugated with a second electron conducting molecule... by amplifying electrical field changes when target molecules bind
Data Source
AI summary
Embodiments of the present disclosure set forth a biosensor for detecting a target. One example sensor includes a first electrode. The first electrode includes a first electron conducting molecule and a first probe. The first probe includes a second electron conducting molecule. The first probe is configured to bind to the target of interest in solution. The first and second electron conducting molecules are different.