Multi-Microchannel Flow-Through Element for Biosensor Clogging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Miniaturization of biosensors and microanalytical devices faces challenges such as non-representative sample analysis, clogging issues, low sensitivity, and complex manufacturing processes, which limit their reproducibility and utility in applications like chemical and biological warfare agent detection and drug development.
Innovation Solution
A multi-microchannel, flow-through element is produced using a method that involves decomposing hydrogen-saturated fluid into solid and gaseous phases, creating microchannels with varied geometry, which reduces clogging, enhances mixing, and increases sensitivity, and can be used as a micromixer, sensor, or chromatographic element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If single microchannel is used, then manufacturing is simpler, but clogging occurs and sensitivity is low
Solution Approach 1:
The invention divides a single microchannel into multiple parallel microchannels within the same element. This segmentation approach prevents clogging by providing alternative flow paths while maintaining the overall simplicity of the element structure. The multiple channels work together to improve reliability without significantly increasing device complexity.
Solution Approach 2:
The invention introduces geometric variations locally within specific sections of the microchannels, such as changing channel diameter or creating expansion/compression zones at particular locations. This local modification enhances mixing and prevents clogging without requiring complete redesign of the entire channel system.
2Productivity
If uniform microchannel geometry is used, then manufacturing is easier, but mixing efficiency is poor
Solution Approach 1:
The invention applies geometric variations only in specific zones where mixing is needed, such as expansion sections or junction areas, while keeping other portions of the channels uniform and easy to manufacture. This targeted approach improves mixing efficiency without complicating the overall manufacturing process.
Solution Approach 2:
The invention incorporates curved or non-uniform cross-sectional geometries in specific channel sections to enhance fluid mixing through chaotic advection and improved flow patterns, while maintaining straight uniform sections where manufacturing simplicity is prioritized.
3Measurement precision
If larger sample size is used, then analysis representativeness is better, but device size increases
Solution Approach 1:
The invention uses multiple parallel microchannels to collectively process a larger effective sample volume while keeping each individual channel small. This allows the device to maintain a compact footprint while improving analysis representativeness through increased total sampling capacity.
Solution Approach 2:
The invention combines multiple microchannel flow paths into a single integrated element with common inlet and outlet structures. This merging approach allows the system to handle larger effective sample volumes through parallel processing while maintaining a compact device size comparable to single-channel systems.
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 multi-microchannel element improves assay sensitivity, reproducibility, and mixing efficiency, allowing for rapid analysis and reduced clogging, while enabling the use of smaller sample sizes and more efficient chemical and biological reactions.
Implementation Method 1
decomposing hydrogen-saturated fluid into solid and gaseous phases
Implementation Method 2
as the saturated fluid solidifies
Data Source
AI summary
A method of producing a multi-microchannel, flow-through element, including the steps of providing a body of material, and producing multiple microchannels within the body, wherein the microchannels extend through the body to produce a multi-microchannel, flow-through element. Such an element can be used as a micromixer, a sensor element, a filter, a fuel element or a chromatographic element.