Microdroplet Production via Segmented Cross-Intersection Channels
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Solution Overview
Problem
Existing methods for producing microdroplets and microcapsules lack efficiency in producing uniform-sized microdroplets with different components and fail to effectively separate primary and satellite droplets for high-quality double emulsion production.
Innovation Solution
A method and apparatus utilizing cross and T-shaped intersection portions in microchannels to alternately produce microdroplets with uniform sizes and different components, allowing for the separation and recovery of primary and satellite droplets, enabling the production of high-quality double emulsion-microcapsules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional methods are used to produce microdroplets, then production can proceed with simple equipment, but uniform-sized microdroplets with different components cannot be efficiently produced
Solution Approach 1:
The invention segments the microdroplet production process into multiple independent channels, each producing microdroplets of a specific size. By dividing the production into parallel channels with different channel dimensions, the system achieves both uniform size control (through precise channel geometry) and high productivity (through simultaneous production in multiple channels).
Solution Approach 2:
The invention transitions from single-channel sequential production to multi-channel parallel production, adding the dimension of spatial parallelism. This allows different components to be produced simultaneously in different channels and then combined, achieving both size uniformity and high production efficiency.
2Reliability
If conventional emulsion production is used, then the process is simple, but primary and satellite droplets cannot be effectively separated for high-quality double emulsion production
Solution Approach 1:
The invention introduces a separation channel as an intermediary structure between droplet generation and double emulsion formation. This separation channel uses surface tension and flow dynamics to automatically separate primary droplets from satellite droplets without requiring complex external separation equipment, thus improving quality while maintaining simplicity.
3Adaptability or versatility
If multiple dispersion phases are used to produce different microdroplets, then product variety increases, but the production process becomes more complex
Solution Approach 1:
The invention segments different dispersion phases into separate dedicated channels, with each channel optimized for a specific phase. This segmentation allows independent control and optimization of each phase while maintaining overall system simplicity through modular architecture. The segmented channels converge at a common outlet where microdroplets are combined.
Solution Approach 2:
The invention creates a universal multi-channel platform that can handle different dispersion phases simultaneously. Each channel is designed with universal principles (same basic structure, material selection criteria, flow control mechanisms) that can be adapted to different phases, reducing overall complexity while enabling high versatility.
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 allows for the simple and efficient production of microdroplets with uniform sizes and different components, facilitating the separation of primary and satellite droplets, and results in high-quality double emulsion-microcapsules.
Implementation Method 1
allowing a first dispersion phase and a second dispersion phase to act on a first continuous phase at an intersection portion among the first continuous phase, the first dispersion phase, and the second dispersion phase, whereby the microdroplets are sequentially produced
Data Source
AI summary
A method and an apparatus for producing various types of microdroplets. The apparatus has a cross intersection portion at which a first continuous phase, a first dispersion phase, and a second dispersion phase intersect with each other. A first liquid feed device controls the first dispersion phase and a second liquid feed device controls the second dispersion phase. A control device is connected to the first liquid feed device and the second liquid feed device. The first liquid feed device and the second liquid feed device are controlled by a signal from the control device so that microdroplets formed of the first dispersion phase and microdroplets formed of the second dispersion phase are sequentially produced.