Microfluidic Air-to-Liquid Chamber for Femtogram Analyte Detection
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Solution Overview
Problem
Current methods for detecting airborne contaminants like organo-phosphate compounds in military and civilian settings require laboratory sampling and substantial dilution, limiting real-time analysis and failing to detect toxic substances at the femtogram level, especially in environments where autonomous and immediate detection is necessary.
Innovation Solution
A system comprising a pump, collector, micro-fluidic chamber with immobilized biorecognition elements, and a detector that performs real-time analysis using biochemical reactions and fluorescence detection to identify organo-phosphate compounds, allowing for autonomous and immediate detection of contaminants in air samples.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If laboratory sampling and substantial dilution methods are used, then detection coverage is improved, but detection sensitivity deteriorates (detection limit elevated to μg/sample)
Solution Approach 1:
The patent extracts and concentrates the target analyte from the air sample using a collector device before analysis. This extraction process separates the analyte of interest from the bulk sample matrix, allowing for concentration of the analyte to femtogram levels while maintaining broad detection coverage for multiple organic compound classes
Solution Approach 2:
The system performs preliminary concentration and preparation of the sample through autonomous liquid extraction into a mobile organic liquid phase before the actual detection occurs. This preliminary action ensures that when detection happens, the analyte is already concentrated at the required sensitivity level
2Measurement precision
If laboratory sampling methods are used, then comprehensive analysis is improved, but real-time detection capability deteriorates
Solution Approach 1:
The system is designed to be autonomous and self-contained, performing sample collection, concentration, and detection without requiring external laboratory facilities. The integrated micro-fluidic chamber and biochemical reaction system enable the device to service itself through automated sample processing and real-time analysis
Solution Approach 2:
The patent merges multiple functions (sampling, concentration, detection) into a single integrated system that operates in real-time. The micro-fluidic chamber combines the collector output with biochemical reagents in one device, eliminating the time delay associated with transporting samples to separate laboratory facilities
3Productivity
If autonomous detection equipment is developed, then real-time analysis capability is improved, but device complexity increases
Solution Approach 1:
The system is divided into distinct functional modules: a collector for sample concentration, a micro-fluidic chamber for biochemical reactions, and a detector for signal measurement. This segmentation allows each component to be optimized independently while maintaining overall system simplicity and real-time capability
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
Enables real-time detection of organo-phosphate compounds at the femtogram level, providing immediate alerts and ensuring safety in environments where toxic substances are present, such as aircraft, by converting airborne contaminants into a mobile organic liquid phase for analysis.
Implementation Method 1
a collector to transfer the airborne contaminants by autonomous liquid extraction into a mobile organic liquid phase
Implementation Method 2
a micro-fluidic chamber comprising immobilized biorecognition elements that bind to analytes delivered from the mobile organic liquid phase
Implementation Method 3
a mechanism to introduce the mobile organic liquid phase to a buffer containing a plurality of substrates causing a series of biochemical reactions that create a change corresponding to a concentration of the target analyte
Implementation Method 4
a detector to perform real-time analysis that correlates to a concentration of the organic compounds to determine a presence of the target analyte
Data Source
AI summary
A system, apparatus, and method include a pump to deliver vapor including airborne contaminants including organic compounds including a target analyte; a collector to transfer the airborne contaminants by autonomous liquid extraction into a mobile organic liquid phase; a micro-fluidic chamber including immobilized biorecognition elements that bind to analytes delivered from the mobile organic liquid phase; a mechanism to introduce the mobile organic liquid phase to a buffer containing a plurality of substrates causing a series of biochemical reactions that create a change corresponding to a concentration of the target analyte; and a detector to perform real-time analysis that correlates to a concentration of the organic compounds to determine a presence of the target analyte.