Programmable Microfluidic Nodes for Multi-Application Devices
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Solution Overview
Problem
Microfluidic devices are typically designed for a single application, leading to high costs and the need for new designs for each new application, as they require specific configurations and functional elements, which can be costly and inefficient.
Innovation Solution
A microfluidic device with a programmable configuration using nodes with different liquid pinning strengths, allowing fluidic communication to be controlled and configured based on the alteration states of these nodes, enabling the device to be 'programmed' for various applications by altering some nodes to either pin or allow liquids to pass through, thus enabling multiple applications with a single device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If microfluidic devices are designed for a single application with specific configurations, then the device can achieve high reliability for that specific application, but the device complexity increases and costs rise when multiple applications are needed
Solution Approach 1:
The patent implements a universal microfluidic device platform with a standardized node architecture that can be configured for multiple applications. The device includes reusable components such as an input microchannel, distribution microchannels, microfluidic modules, and output microchannels that can serve different functions. By altering the state of nodes (from altered to unaltered), the same physical device can be programmed to achieve different fluidic configurations for various applications, eliminating the need to design separate devices for each application while maintaining application-specific performance.
Solution Approach 2:
The patent introduces dynamic reconfigurability through nodes that can transition between altered and unaltered states. This dynamic state change allows the device to adapt its fluidic pathways and connectivity on-demand. The node state alteration enables the system to dynamically reconfigure which microfluidic modules are connected to the input and output channels, providing flexibility to switch between different applications without physical modification or redesign of the device structure.
2Reliability
If new microfluidic device designs are created for each new application, then the device can be optimized for that specific application, but the manufacturing cost increases
Solution Approach 1:
The patent creates a universal device template that can be manufactured once and then programmed for different applications through node state alteration. The standardized components (input microchannel, distribution microchannels, microfluidic modules, output microchannels, and nodes) can be mass-produced using the same fabrication process. Application-specific optimization is achieved not through custom manufacturing but through selective activation of nodes, which dramatically reduces per-application manufacturing costs while maintaining the ability to optimize fluidic pathways for each application's specific needs.
Solution Approach 2:
The patent utilizes changes in node state (alteration vs. unaltered) as a parameter to control device functionality. This parameter change approach allows a single manufactured device to exhibit different operational characteristics for different applications. The physical structure remains constant, but the functional configuration changes based on node states, enabling cost-effective manufacturing through standardization while preserving application-specific optimization capabilities.
3Ease of manufacture
If a standardized microfluidic device design is used for multiple applications, then manufacturing costs decrease, but the adaptability to different applications is limited
Solution Approach 1:
The patent incorporates dynamic node state control within a standardized device architecture. The nodes can be altered or left unaltered to dynamically reconfigure fluidic pathways, enabling the same physical device to adapt to different application requirements. This dynamic capability transforms a potentially rigid standardized design into a flexible platform that can be programmed for various applications through simple state changes, thereby achieving both cost efficiency and high adaptability.
Solution Approach 2:
The patent divides the device into discrete, independently controllable nodes that can be selectively altered. This segmentation allows granular control over fluidic connectivity, enabling the standardized device to be customized for different applications by altering specific nodes while leaving others unchanged. The modular node architecture provides the adaptability needed for versatility while maintaining the manufacturing efficiency of a standardized overall device structure.
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 a multi-purpose microfluidic device that can be configured for different applications by altering node states, reducing the need for multiple device designs and lowering costs, while enabling precise control over fluid flow and module connectivity.
Implementation Method 1
the nodes in the set of m nodes have different liquid pinning strengths. As a result, the extent in which a liquid introduced in the input microchannel passes through one or more of the set of m microfluidic modules varies based on the different liquid pinning strengths of the nodes
Data Source
AI summary
The invention is directed to a microfluidic device. The device includes an input microchannel, a set of m distribution microchannels, a set of m microfluidic modules and a set of m nodes. The m microfluidic modules (m≥2) are in fluidic communication with the m distribution microchannels, respectively. The one or more nodes of the set of m nodes branch from the input microchannel, and further branch to a respective one of the set of m distribution microchannels. In addition, a subset, but not all, of the nodes are altered. The nodes of the set of m nodes have different liquid pinning strengths. As a result, the extent in which a liquid passes through one or more of the m microfluidic modules varies based on the different liquid pinning strengths, in operation. Additional sets of nodes may be provided to allow liquid to pass through ordered pairs of modules.