Microfluidic Detection Chip With Branching Channels For Multi-Channel Rapid Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current microfluidic chips face challenges with sample contamination, limited detection throughput, and high costs due to complex and inefficient sample inlet designs, which hinder their application in multi-channel rapid detection systems.
Innovation Solution
A microfluidic detection chip with a main flow channel and branching channels connected to independent detection chambers, featuring a chip sampling port and exhaust holes for efficient sample flow and reduced contamination, utilizing a three-layer structure with a hydrophilic membrane and pressure-sensitive adhesive tape for precise control of channel dimensions and flow resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a complex sample inlet design is used to improve detection accuracy, then detection precision is improved, but device complexity increases and manufacturing cost increases
Solution Approach 1:
The chip is divided into three separate layers (bottom plate layer, intermediate layer, upper cover layer), each performing specific functions. The sample inlet structure is segmented across these layers, with the intermediate layer providing structural support and the upper cover layer containing the actual inlet opening, simplifying manufacturing while maintaining precision
Solution Approach 2:
The chip sampling port is pre-designed with specific dimensions (0.5-1.5mm diameter) and positioning during manufacturing, eliminating the need for complex sample alignment procedures during operation. The microfluidic channels are pre-formed with controlled resistance to ensure proper sample flow distribution before the detection process begins
2Productivity
If multiple detection chambers are added to increase detection throughput, then productivity is improved, but device complexity increases
Solution Approach 1:
The detection system is segmented into multiple independent detection chambers (first, second, third detection chambers) that can simultaneously process different samples. Each chamber is connected through the intermediate layer, allowing parallel detection operations without interfering with each other, thus increasing throughput while maintaining manageable complexity
Solution Approach 2:
Multiple detection chambers are merged into a single integrated chip structure with shared microfluidic channels and control mechanisms. The bottom plate layer and upper cover layer enclose all chambers, creating a compact multi-channel system that achieves high throughput without proportionally increasing device complexity
3Speed
If sample flow rate is increased to improve detection speed, then analysis speed is improved, but sample contamination increases
Solution Approach 1:
The chip sampling port and microfluidic channels are designed with specific local properties (hydrophilic coating, controlled cross-section, optimized resistance) that regulate sample flow velocity. This ensures sufficiently fast flow speed for rapid detection while maintaining laminar flow conditions that prevent sample contamination and cross-contamination between channels
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 design enables high-accuracy, rapid, and cost-effective multi-channel detection, allowing simultaneous sample injection and reaction, improving detection efficiency and reducing resource consumption.
Implementation Method 1
the surfaces of the upper cover layer and the bottom plate layer each has a hydrophilic membrane, so that the samples flow rapidly through the chip sampling port into the main flow channel
Implementation Method 2
The bottom plate layer, the intermediate layer, and the upper cover layer are integrally bonded together by means of double-sided gluing of the intermediate layer
Data Source
AI summary
A microfluidic detection chip for multi-channel rapid detection, including a chip body. A chip sampling port, a plurality of independent detection chambers, and a microfluidic channel are disposed on the chip body, and the chip sampling port is connected to the detection chambers by means of the microfluidic channel. The chip body further includes an electrode. The detection chambers are connected to the electrode. The microfluidic channel includes a main flow channel and a plurality of branching microfluidic channels. A tail end of the main flow channel is divided into the plurality of branching microfluidic channels, and the plurality of branching microfluidic channels are connected to the plurality of independent detection chambers in a one-to-one corresponding manner. And, the other end of the main flow channel is connected to the chip sampling port.