Fluidic Circuit for Droplet Manipulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for droplet manipulation at the picoliter to nanoliter scale require complex systems with external forces or immiscible fluids, leading to potential contamination and increased complexity, particularly in high-throughput applications, where precise and contamination-free liquid handling is necessary.
Innovation Solution
A fluidic device and method that enables precise on-device loading, merging, mixing, and splitting of droplets using pressures from standard laboratory equipment, eliminating the need for external electrical, magnetic, or acoustic forces and immiscible fluids, thereby simplifying the process and reducing contamination risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If external electrical, magnetic, or acoustic forces are used to manipulate droplets, then droplet manipulation capability is achieved, but device complexity increases
Solution Approach 1:
The patent extracts and eliminates the need for external electrical, magnetic, or acoustic forcing mechanisms from the droplet manipulation system. By removing these complex external force generators, the invention achieves droplet manipulation through passive fluidic means alone, directly reducing device complexity while maintaining operational capability.
Solution Approach 2:
The fluidic circuit is designed to manipulate droplets using its own internal pressure differential mechanisms rather than requiring external forcing systems. The system self-regulates droplet movement through integrated pressure control and fluidic resistance elements, eliminating the need for separate electrical, magnetic, or acoustic actuation systems.
2Ease of operation
If immiscible fluids are used to separate droplets, then droplet separation is achieved, but contamination risk increases
Solution Approach 1:
The invention removes immiscible fluids from the droplet manipulation system entirely. By eliminating the need for oil or other immiscible separation media, the patent prevents contamination from these substances while maintaining droplet separation capability through alternative fluidic resistance-based mechanisms.
Solution Approach 2:
The system uses homogeneous liquid samples without requiring immiscible fluid phases. Droplet separation is achieved through controlled fluidic resistance and pressure differentials that work effectively within single-phase liquids, eliminating the contamination issues associated with immiscible fluid interfaces.
3Manufacturing precision
If precise liquid handling systems are used, then liquid handling precision is improved, but device complexity increases
Solution Approach 1:
The fluidic circuit achieves precise liquid handling through its own internally integrated pressure control mechanisms and fluidic resistance elements. The system self-regulates flow rates and droplet volumes using passive fluidic components rather than requiring complex external precision control systems, thereby maintaining precision while reducing overall device complexity.
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 provides efficient and precise manipulation of droplets at the picoliter to nanoliter scale, reducing complexity and contamination, while enabling high-throughput applications with consistent analytical results.
Implementation Method 1
manipulating droplets using pressures that can be provided by standard laboratory liquid handling equipment
Implementation Method 2
droplet manipulation at the picoliter to nanoliter scale
Data Source
AI summary
Various embodiments of fluidic devices and methods of the present teaching can provide precision on-device loading of fluidic samples, and merging, mixing, and splitting of the fluidic samples, in illustrative embodiments as droplets, using pressures that can be provided by standard laboratory liquid handling equipment. Various embodiments of fluidic devices of the present teachings can provide on-device manipulation of accurate and precise fluidic volumes at the picoliter to nanoliter scale for each steps from fluidic sample loading to fluidic sample splitting. Various embodiments of fluidic elements of the present teachings, for example, but not limited by, various embodiments of fluidic traps of the present teachings, can have a constrained and measurable geometry, allowing for accurate and precise tuning of each fluidic sample volume throughout the on-device liquid handling process.