Microtransfer Patterning of Magnetic Materials for Microfluidic Analyte Capture
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current microfluidic devices for analyte detection require complex instrumentation, lack rapid and scalable development, and rely on difficult thin-film deposition or printing-based techniques that only allow for thin films to be fabricated.
Innovation Solution
The development of a microfluidic device with a channel surface featuring a pattern of magnetic materials, comprising a metallic and adhesive component, which are operational to mix and capture analytes from a sample, and a method involving flowing a sample and magnetic analyte binding agents through the device, allowing for magnetic coupling and analyte capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If thin-film deposition or printing-based techniques are used, then magnetic materials can be positioned on the channel surface, but the fabrication process becomes complex and limited to thin films only
Solution Approach 1:
The patent replaces complex mechanical thin-film deposition processes with a magnetic field-based positioning system. Magnets are embedded in the channel surface to generate magnetic fields that directly position and hold magnetic analyte binding agents, eliminating the need for complex deposition equipment and multi-step fabrication processes.
Solution Approach 2:
The patent changes the positioning mechanism from physical deposition parameters (thickness, uniformity) to magnetic field parameters (strength, distribution). By controlling magnet placement and strength, the system achieves precise positioning of magnetic materials without being constrained by thin-film fabrication limitations.
2Manufacturing precision
If thin-film deposition techniques are used, then magnetic materials can be fabricated, but rapid and scalable development is prevented
Solution Approach 1:
The patent segments the magnetic material positioning into discrete magnet units embedded at specific locations in the channel surface. This modular approach allows for easier fabrication, quality control, and scaling compared to continuous thin-film deposition, enabling rapid prototyping and manufacturing.
Solution Approach 2:
The patent uses master molds or templates to replicate channel structures and magnet positions, allowing for rapid production of multiple devices with consistent precision. This copying approach eliminates the need for repeated complex deposition processes and enables scalable manufacturing.
3Manufacturing precision
If complex instrumentation is used, then magnetic materials can be positioned accurately, but the device becomes difficult to operate and scale
Solution Approach 1:
The patent implements a self-positioning system where magnetic analyte binding agents automatically align and bind to the magnetic channel surface without requiring external positioning instrumentation. The magnetic field naturally guides the binding agents to their correct positions, eliminating complex operational procedures.
Solution Approach 2:
The patent replaces mechanical positioning instrumentation with magnetic field-based self-alignment. The magnetic field acts as an invisible guide that automatically positions magnetic materials according to the channel geometry, simplifying both manufacturing and operation while maintaining high precision.
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 solution enables efficient and scalable capture of analytes, overcoming the limitations of complex fabrication processes and thin-film restrictions, while allowing for rapid development and operation of microfluidic devices.
Implementation Method 1
The plurality of magnetic materials are in the form of a pattern that is operational to mix a plurality of magnetic analyte binding agents with a sample containing analytes... associated with a magnet that is operational to apply a magnetic field to the plurality of magnetic materials... magnetic analyte binding agents bind to analytes in the sample and become magnetically coupled to the plurality of the magnetic materials
Data Source
AI summary
Embodiments of the present disclosure pertain to microfluidic devices that include at least one channel with a surface and a plurality of magnetic materials positioned on the surface. The plurality of magnetic materials include a metallic component and an adhesive component. The adhesive component is directly positioned on the surface. Further embodiments of the present disclosure pertain to methods of using the microfluidic devices to capture one or more analytes from a sample. Such methods generally include flowing the sample and a plurality of magnetic analyte binding agents through at least one channel of a microfluidic device of the present disclosure. Additional embodiments of the present disclosure pertain to methods of making the microfluidic devices of the present disclosure by forming a plurality of magnetic materials within a cast and transferring the formed magnetic materials from the cast onto a surface to form a channel.