Capped Conductive Nanoparticle Sensor Array for Breath Cancer Detection
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Solution Overview
Problem
Current gas-sensing devices for detecting cancer through breath analysis lack the necessary accuracy and consistency for clinical use, as they fail to provide reliable detection of specific volatile organic compounds (VOCs) indicative of various types of cancer with sufficient sensitivity and selectivity.
Innovation Solution
A sensor array comprising conductive gold nanoparticles with a narrow particle size distribution and an organic coating, optimized for enhanced sensitivity, is used in conjunction with a learning and pattern recognition analyzer to identify specific VOCs in breath samples, utilizing algorithms like principal component analysis to differentiate between healthy and cancerous breath patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional gas-sensing devices are used for breath analysis, then the detection of VOCs can be performed, but the accuracy and consistency are insufficient for clinical use
Solution Approach 1:
The patent applies parameter changes by optimizing the particle size distribution of gold nanoparticles (narrow distribution with mean size of 10-50 nm), controlling the thickness of organic coating (0.5-5 nm), and adjusting the composition ratios of sensor arrays to enhance both detection accuracy and reliability for clinical breath analysis
Solution Approach 2:
The patent uses composite materials by combining conductive gold nanoparticles with specifically selected organic coating materials (such as thiols, amines, carboxylic acids) to create sensor elements that exhibit enhanced sensitivity and selectivity for detecting cancer-related VOCs in breath samples
2Adaptability or versatility
If sensor arrays with broad cross-reactivity are used, then the variety of detectable compounds increases, but the selectivity for specific cancer markers decreases
Solution Approach 1:
The patent applies segmentation by dividing the detection task into multiple specialized sensors, each functionalized with different organic coatings that target specific VOCs. This segmented approach allows the array to maintain broad coverage while achieving high selectivity through the collective response pattern of individual specialized sensors
Solution Approach 2:
The patent implements local quality by functionalizing different nanoparticles within the array with specific organic coatings tailored to detect particular VOCs. Each sensor element has localized chemical properties optimized for specific analytes, enabling the system to distinguish between different cancer markers with high selectivity
3Ease of manufacture
If nanoparticles with wide size distribution are used, then the manufacturing process is simpler, but the sensing signal intensity and consistency are reduced
Solution Approach 1:
The patent applies parameter changes by implementing a narrow particle size distribution (mean size of 10-50 nm with specific standard deviation control) of gold nanoparticles. This parameter optimization enhances the uniformity of electrical conductivity and sensing response across the sensor array, thereby improving signal sensitivity and consistency while maintaining manufacturing feasibility through controlled synthesis protocols
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 sensor array achieves high sensitivity and selectivity in detecting VOCs indicative of cancer, with the ability to distinguish between different types and stages of cancer, offering a reliable diagnostic tool with improved accuracy compared to existing technologies.
Implementation Method 1
Gas-sensing devices for the detection of VOCs in breath samples of cancer patients have recently been applied
Implementation Method 2
sensor array comprising conductive gold nanoparticles capped with an organic coating
Data Source
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AI summary
The present invention provides a sensor array for detecting biomarkers for cancer in breath samples. The sensor array is based on 2D films or 3D assemblies of conductive nanoparticles capped with an organic coating wherein the nanoparticles are characterized by a narrow size distribution. Methods of use of the sensor array for discriminating between patterns of volatile organic compounds from healthy individuals and patients with various types of cancer are disclosed.