Nested Microfluidic Substrate Assembly for Precise Electrode Alignment
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Solution Overview
Problem
Existing microfluidic devices face challenges in efficient production and alignment accuracy due to manual assembly and the use of double-sided tape or gasket for substrate sealing, leading to misalignment of electrodes and affecting electric field and droplet driving force.
Innovation Solution
A microfluidic device design incorporating oppositely arranged first and second storage boxes with integrated storage cavities and openings, allowing for nesting of substrates without manual adjustment, and utilizing liquid guide holes for channel formation and silicone oil injection, enhancing alignment accuracy and simplifying production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual assembly with double-sided tape or gasket is used to form the microfluidic device, then the device can be assembled, but the forming process becomes cumbersome and alignment accuracy deteriorates
Solution Approach 1:
The first substrate is nested within the first storage box, and the second substrate is nested within the second storage box. The storage boxes are designed with precise dimensions to automatically align the substrates when assembled, eliminating the need for manual alignment adjustments and improving both ease of manufacture and alignment accuracy.
Solution Approach 2:
The substrates are pre-fixed onto the storage boxes before final assembly. This preliminary positioning ensures that when the storage boxes are joined to form the microfluidic device, the substrates are already in the correct alignment, eliminating the need for post-assembly alignment adjustments and improving manufacturing precision.
2Productivity
If substrates are manually handled and positioned, then flexibility in assembly is maintained, but alignment accuracy and efficiency deteriorate
Solution Approach 1:
The nested structure of substrates within storage boxes provides automatic alignment through the precise dimensional relationships between components. This eliminates manual positioning requirements, simultaneously improving assembly efficiency and alignment accuracy without sacrificing flexibility.
Solution Approach 2:
The storage boxes are designed to automatically position and align the substrates during assembly through their structural design. The substrates self-align within the storage boxes without requiring manual intervention, improving both productivity and manufacturing precision while maintaining assembly flexibility.
Data Source
AI summary
Microfluidic device and application method thereof are provided. The microfluidic device includes a first substrate and a second substrate that are oppositely arranged along a first direction; and a first storage box and a second storage box that are oppositely arranged along the first direction. The first direction is a thickness direction of the microfluidic device. The first storage box includes a first storage cavity and a first opening communicating with the first storage cavity, and the first substrate is fixed in the first storage cavity. The second storage box includes a second storage cavity and a second opening communicating with the second storage cavity, and the second substrate is fixed in the second storage cavity. Along the first direction, the first opening is arranged opposite to the second opening and the first storage box is nested with the second storage box.