Biochip Conductive Particle Electron Diffusion
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Solution Overview
Problem
Conventional biochips with 3-D structures face challenges in detecting target antigens due to restricted electron diffusion and increased voltage requirements, leading to attenuated signals and power loss, as the polymer matrix acts as a resistance and restricts electron flow.
Innovation Solution
A biochip with conductive particles connected to a polymer material on a metal electrode substrate, utilizing a current detector to enhance electron flow and signal detection, where the conductive particles, such as titanium oxide nanoparticles, provide a low-resistance path for electrons, allowing for efficient antigen-antibody reactions and improved signal amplification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a 3-D detector using polymer matrix is formed to increase surface area to volume ratio, then antigen-antibody reaction is enhanced, but electron diffusing speed is restricted and signal is attenuated
Solution Approach 1:
The patent introduces a conductive particle as an intermediary between the polymer matrix and the electrode. This conductive particle serves as a mediator that facilitates electron transport from the polymer matrix to the electrode, resolving the contradiction by maintaining the high surface area to volume ratio of the 3-D detector while providing an efficient electron conduction path that prevents signal attenuation.
Solution Approach 2:
The patent creates a composite structure combining polymer matrix and conductive particles. The polymer matrix maintains the 3-D structure for high antigen-antibody reaction, while the conductive particles form a conductive network that enables efficient electron transport. This composite approach allows both high detection sensitivity and fast electron diffusion to coexist.
2Measurement precision
If polymer matrix is used to form 3-D detector, then surface area to volume ratio is increased, but polymer matrix itself acts as resistance causing IR degradation and power loss
Solution Approach 1:
The conductive particle acts as an intermediary that bypasses the resistive path through the polymer matrix. By providing a separate conductive pathway from the conductive particle to the electrode, the system reduces the overall resistance and minimizes IR degradation, thereby reducing power loss while maintaining the high surface area to volume ratio benefit.
Solution Approach 2:
The patent changes the electrical conductivity parameter of the detector system by introducing conductive particles. This parameter change transforms the polymer matrix from a purely resistive medium into a system with enhanced conductive pathways, reducing energy loss while preserving the structural benefits of the 3-D polymer matrix.
3Device complexity
If conventional polymer matrix detector is used, then structure is simple, but diffusing speed of electron is restricted and more voltage is required
Solution Approach 1:
The patent creates a composite structure combining polymer matrix and conductive particles. The polymer matrix maintains structural simplicity and provides the 3-D framework, while the conductive particles form a conductive network that enhances electron diffusion. This composite approach improves electron diffusing speed without significantly increasing structural 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 biochip effectively detects target antigens with enhanced sensitivity and reduced nonspecific signals, enabling efficient and reliable detection using a small amount of antigen, while minimizing power loss and improving the surface-to-volume ratio.
Implementation Method 1
the conductive particle coupled to polymer material... provide a low-resistance path for electrons, allowing for efficient antigen-antibody reactions and improved signal amplification
Implementation Method 2
antigen binds to an antibody having an enzyme, an injected analyte is oxidized to generate electrons, and the generated electrons flows into a metal electrode
Data Source
AI summary
A biochip including conductive particle and a device for detecting target antigen comprising the biochip are disclosed. According to the present invention, a target antigen can be effectively detected using a small amount of target antigen alone, whereby nonspecific detection signal can be reduced and an amplified signal can be detected.