Colorimetric Sensor Array for Microorganism Identification
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Solution Overview
Problem
Current methods for detecting and identifying microorganisms are often slow, costly, and lack sensitivity and selectivity, relying on single sensors that are not effective for diverse interactions with analytes, particularly for toxic and odiferous compounds.
Innovation Solution
A colorimetric sensing apparatus with an array of chemoresponsive dyes deposited in a predetermined pattern, which provides a distinct spectroscopic response to analytes produced by microorganisms, allowing for their detection and identification through visual imaging and pattern recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional cell culturing methods are used to detect microorganisms, then the detection process is inexpensive and simple, but the detection speed is slow requiring incubation periods of 24 hours to a week or more
Solution Approach 1:
The invention divides the detection process into multiple parallel steps: initial rapid detection using whole-cell vibrational spectroscopy to identify potential microorganisms, followed by targeted identification of specific species or strains. This segmentation allows the system to quickly filter samples and only perform comprehensive analysis on suspicious cases, dramatically reducing overall detection time while maintaining accuracy.
Solution Approach 2:
The system performs preliminary detection and screening using vibrational spectroscopy before committing to full identification procedures. By pre-screening samples and identifying only those that require further analysis, the system avoids unnecessary lengthy incubation periods for negative samples and accelerates the overall detection workflow.
2Device complexity
If a single sensor is used for microorganism detection, then the device complexity is low, but the selectivity and sensitivity for diverse analytes including toxic and odiferous compounds are insufficient
Solution Approach 1:
The invention employs a multi-sensor array where each sensor type detects different aspects of microorganism presence and characteristics. The combination of sensors including vibrational spectroscopy detectors, mass spectrometry, and other detection methods creates a universal system capable of detecting diverse analytes with high selectivity, including toxic and odiferous compounds that single sensors cannot reliably detect.
Solution Approach 2:
The detection system integrates multiple sensing technologies and materials into a composite detection platform. By combining different sensor types with complementary detection mechanisms, the system achieves enhanced selectivity and sensitivity for identifying microorganisms and their metabolites, including challenging analytes like toxic and odiferous compounds.
3Measurement precision
If conventional biochemical screening and serological confirmation methods are used for bacterial identification, then the identification accuracy is high, but the processing time and expertise requirements increase significantly
Solution Approach 1:
The invention replaces manual biochemical screening and serological confirmation procedures with automated vibrational spectroscopy-based identification. The system uses machine learning algorithms to analyze spectral data and automatically identify bacterial species and strains, eliminating the need for time-consuming manual tests and expert microbiological analysis while maintaining or improving identification accuracy.
Solution Approach 2:
The system creates spectral fingerprints that serve as digital copies of microorganism characteristics. These spectral signatures can be stored, compared, and analyzed without requiring physical manipulation of the microorganisms, enabling rapid automated identification that replaces traditional wet laboratory methods and reduces dependence on expert interpretation.
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 apparatus enables rapid, cost-effective, and selective detection and identification of microorganisms by generating a unique colorimetric signature for each species, improving sensitivity and selectivity over existing technologies.
Implementation Method 1
the sensing element is composed of an array which has a plurality of chemoresponsive dyes deposited thereon in a predetermined pattern combination, wherein the combination of the dyes have a distinct and direct spectroscopic, transmission, or reflectance response to distinct analytes produced by the microorganism
Data Source
AI summary
The present invention is an apparatus for detecting the presence, quantity and identity of one or more microorganisms in a sample and a method for using the same. The apparatus is composed of one or more chambers and a sensing element for sensing microorganisms. In particular embodiments, the sensing element is an array of chemoresponsive dyes deposited on a substrate in a predetermined pattern combination, wherein the combination of the dyes have a distinct and direct spectroscopic, transmission, or reflectance response to distinct analytes produced by the microorganism which is indicative of the presence, quantity and identity of the microorganism.