Anchored-liquid drops for clog-free particle separation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current Deterministic Lateral Displacement (DLD) systems for particle separation are prone to clogging, not reusable, and difficult to fabricate, limiting their effectiveness and versatility in separating particles of varying sizes and densities.
Innovation Solution
The use of anchored-liquid or anchored-gas drops in periodic structures as a novel stationary phase, which can be easily regenerated and tuned, allowing for size-based separation and filtration by controlling the liquid volume and deformability of the obstacles, thereby overcoming the limitations of traditional solid obstacle arrays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If solid obstacle arrays are used in DLD systems, then particle separation resolution is improved, but the system becomes prone to clogging and difficult to fabricate
Solution Approach 1:
The patent replaces solid obstacles with liquid obstacles that can deform and adapt to particle flow, using fluid dynamics to maintain separation resolution while preventing clogging through the liquid's ability to flow and reshape around particles
Solution Approach 2:
The patent introduces dynamically adjustable liquid obstacles whose shape and position can be controlled in real-time, allowing the system to adapt to different particle sizes and flow conditions, thereby maintaining high resolution while avoiding the static limitations and clogging issues of solid obstacles
2Measurement precision
If solid obstacle arrays are used in DLD systems, then particle separation is achieved, but the system becomes not reusable and not modifiable
Solution Approach 1:
The patent employs liquid obstacles that can be dynamically reconfigured, added, or removed during operation, enabling the system to be reused for different separation tasks and modified to handle various particle types and sizes without permanent structural changes
Solution Approach 2:
The patent allows changing physical parameters such as liquid viscosity, surface tension, and flow rate to optimize separation for different applications, providing versatility and reusability that solid obstacle systems cannot achieve
3Measurement precision
If solid obstacle arrays are used in DLD systems, then separation performance is maintained, but the system becomes difficult to fabricate
Solution Approach 1:
The patent uses fluid-filled structures that can be formed using standard microfluidic fabrication techniques, avoiding the complex precision machining or lithography required for solid obstacle arrays, thereby simplifying manufacturing while maintaining separation performance
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 enables efficient separation and filtration of particles based on size and density, with the ability to regenerate and modify the obstacle array, broadening the application range from microfluidics to air filtration and wastewater treatment, while avoiding clogging issues.
Implementation Method 1
Deterministic lateral displacement (DLD) systems are designed to separate particles of different sizes by forcing them through periodic lattice of obstacles
Implementation Method 2
the pressurized gas being configured to exert sufficient pressure on surrounding fluid to maintain the array of anchored-gas drops
Data Source
AI summary
Various embodiments comprise systems, methods, architectures, mechanisms or apparatus configured to separate particles of varying size within a fluid flow, or filter particles from a fluid flow, via an array of anchored-liquid drops or anchored-gas drops.