Multisensor Array for Gas Phase Analyte Detection
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Solution Overview
Problem
Conventional chemical sensor arrays for detecting volatile organic compounds in the gas phase are limited by high costs, sensitivity issues, and complexity, particularly due to cross-reactivity and environmental interference, making them less effective at low analyte concentrations and requiring specific temperature and humidity conditions.
Innovation Solution
A multisensor array utilizing at least two chemo-selective compounds with heteroatoms such as nitrogen, oxygen, sulfur, or selenium, which change their physicochemical properties when exposed to analytes, allowing for rapid and inexpensive detection through colorimetric changes or other transduction methods, and can be used as single-use disposables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional lock-and-key chemical sensors are used for high selectivity detection, then detection precision is improved, but device complexity and cost increase
Solution Approach 1:
The invention divides the detection task into multiple parallel sensing elements, each responding to different aspects of the analyte. Instead of one complex highly selective sensor, multiple simpler sensors with different selectivities work together in an array, with pattern recognition algorithms combining their responses to achieve high detection precision while keeping individual sensor complexity low.
Solution Approach 2:
The sensor array uses relatively non-specific sensor molecules that can respond to multiple different analytes. These universal sensing elements detect various chemical compounds through common interaction mechanisms, and the system achieves specific analyte identification through pattern recognition across the entire array rather than through highly selective individual sensors.
2Reliability
If conventional electronic nose systems are used for detection, then detection capability is improved, but portability and ease of operation deteriorate
Solution Approach 1:
The invention employs disposable sensor arrays that can be manufactured at low cost using simple fabrication techniques. These single-use sensor elements eliminate the need for complex calibration, maintenance, and environmental control systems, making the overall system portable and easy to operate while maintaining reliable detection capability.
3Ease of manufacture
If conventional sensor arrays with limited chemical diversity are used, then manufacturing simplicity is improved, but detection versatility deteriorates
Solution Approach 1:
The sensor array combines multiple sensing elements with different chemical compositions and properties in a single device. Each element has distinct selectivity characteristics, and their composite response enables detection of diverse analyte types including explosives, toxins, and volatile organic compounds, achieving broad detection versatility while maintaining relatively simple manufacturing of individual elements.
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 multisensor array provides rapid, cost-effective detection of various chemical compounds, including explosives, toxins, and volatile organic compounds, with improved sensitivity and reduced cross-reactivity, capable of distinguishing between different analytes and environmental interferants, and can be applied in diverse fields like military, medical, and environmental monitoring.
Implementation Method 1
detection through colorimetric changes or other transduction methods
Implementation Method 2
capable of individually changing physicochemical properties when exposed to analytes or analyte mixtures
Data Source
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AI summary
The present invention relates to a multisensor array for detection of analytes in the gas phase or in the liquid phase, comprising at least two different chemo-selective compounds represented by the general formula (I) wherein the hetero atoms X1-X4 and the substituents R1-R4 are defined in the specification and the dashed bonds represent independently of each other either a single bond or a double bond. Said chemo-selective compounds are capable of individually changing physicochemical properties when exposed to analytes or analyte mixtures and these changes can be detected by a transducer or an array of transducers. The present invention does also relate to the use of at least two different chemo-selective compounds in a sensor array, a method for preparation of such sensor arrays and the use of said sensor arrays. Furthermore the present invention relates to methods for detecting and identifying analytes or mixtures thereof in the gas phase or in the liquid phase.