Hydrodynamic Focusing Chip Geometry for Parallel Particle Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional microfluidic devices for sheath flow are complex and difficult to fabricate, limiting their efficiency and effectiveness in applications such as particle sorting and analysis.
Innovation Solution
A microfluidic particle processing assembly with a flow channel featuring a core stream forming geometry, including lateral and vertical fluid focusing components, and ultrasonic transducers to produce pressure waves, facilitating sheath flow and particle focusing within a micro channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional microfluidic devices are used for sheath flow, then particle sorting and analysis can be performed, but the device design becomes complex and difficult to fabricate
Solution Approach 1:
The patent combines multiple sheath flow inlet ports into a single integrated structure that delivers sheath fluid from multiple directions (lateral and vertical) to surround the core sample stream. This merging of multiple inlet functions into one unified component simplifies the overall device design and fabrication while maintaining effective sheath flow performance for particle sorting and analysis
2Measurement precision
If conventional sheath flow devices are used, then particles can be positioned and protected, but the device complexity increases
Solution Approach 1:
The patent segments the sheath flow delivery system into distinct lateral and vertical inlet ports that independently control fluid delivery from different directions. This segmentation allows precise control over sheath fluid flow patterns to achieve accurate particle positioning in the center of the channel, while the modular nature of the segmented design actually reduces overall device complexity compared to conventional integrated approaches
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 solution enables efficient and precise sheath flow, aligning particles for accurate analysis and sorting, while simplifying the device fabrication process and enhancing throughput.
Implementation Method 1
ultrasonic transducers to produce pressure waves, facilitating sheath flow and particle focusing within a micro channel
Implementation Method 2
The resulting sheath flow flows in a laminar state within an orifice or channel so that the particles are aligned and accurately pass through an orifice or channel in a single file row
Data Source
AI summary
A microfluidic chip having a micro channel for processing a sample is provided. The micro channel may focus the sample by using focusing fluid and a core stream forming geometry. The core stream forming geometry may include a lateral fluid focusing component and one or more vertical fluid focusing components. A microfluidic chip may include a plurality micro channels operating in parallel on a microfluidic chip.