Microfluidic Light Redirecting Elements for Optical Noise Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Accurate optical measurements in microfluidic systems are challenging due to time-consuming alignment procedures and optical noise from light incident on areas outside microchannels, which degrades signal quality.
Innovation Solution
Incorporating optical elements on the surface of microfluidic devices to redirect incident light away from intervening portions between channel segments, reducing noise and simplifying alignment by allowing for simplified optics and reduced precision in detector placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical measurements are performed on microfluidic channels, then analytical sensitivity and accuracy are improved, but alignment complexity and time increase
Solution Approach 1:
A light redirecting element is introduced as an intermediary component between the light source and the microfluidic channel. This element mediates the light path by redirecting incident light to align with the channel, eliminating the need for complex alignment procedures while maintaining measurement accuracy
Solution Approach 2:
The light redirecting element is pre-positioned and configured to automatically redirect light onto the microfluidic channel before the measurement process begins. This preliminary arrangement of light paths eliminates the need for time-consuming alignment procedures during operation
2Ease of operation
If light is incident on areas outside microchannels, then optical detection is simplified, but optical noise increases and signal quality degrades
Solution Approach 1:
The light redirecting element takes the potentially harmful stray light that would otherwise create noise and converts it into a beneficial signal by redirecting it onto the microfluidic channel. This transforms optical noise into useful light for measurement, improving signal quality while maintaining detection simplicity
Solution Approach 2:
The light redirecting element acts as a mediator that selectively directs light onto the channel while blocking or redirecting light from areas outside the channel. This intermediary structure simplifies optical detection by defining the light path without requiring complex alignment, while simultaneously reducing optical noise
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 enhances the performance of optical detection systems by minimizing stray light, reducing the need for complex alignment procedures, and improving signal quality in microfluidic systems.
Implementation Method 1
the first optical element redirects at least a portion of the light away from the intervening portion
Implementation Method 2
the first optical element redirects at least a portion of the light away from the intervening portion
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
The present relation relates to a multiplex assay system comprising an article supporting solid-phase assays, said article comprising a rigid planar substrate and comprising two or more different liquid containment regions, each liquid containment region comprising at least one analysis region that can be interrogated optically, each analysis region having one or more binding partners associated with a surface of the substrate, wherein said binding partners bind one or more analytes present in a sample in the liquid containment region.