Tri-layer molecular sensor with oblique deposition for scalable DNA detection
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Solution Overview
Problem
Current DNA sequencing technologies face challenges in scalability, manufacturability, and cost-effectiveness for rapidly sensing millions of DNA molecules, which is crucial for practical applications in precision medicine, where high precision and low costs are necessary for widespread genome sequencing.
Innovation Solution
The development of molecular sensors using a tri-layer thin film device stack with vertically aligned electrodes and oblique deposition techniques allows for high-density device arrays with low surface area, enabling scalable and cost-effective detection of DNA molecules by measuring electronic signal changes without the need for fluorescent labeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical means with fluorescence reporters are used for DNA sequencing, then detection capability is achieved, but device complexity and cost increase
Solution Approach 1:
The patent replaces optical detection systems with electronic detection systems. Specifically, it uses electronic circuits with electrodes to detect DNA molecules through electronic signal changes rather than optical fluorescence detection. This substitution eliminates the need for complex optical components, fluorescence reporters, and associated imaging systems, thereby reducing device complexity while maintaining detection capability.
2Measurement precision
If optical means with fluorescence reporters are used for DNA sequencing, then detection capability is achieved, but cost increases
Solution Approach 1:
The patent replaces expensive optical detection systems with inexpensive electronic detection systems. The electronic circuits using electrodes and standard electronic components are significantly cheaper to manufacture than optical systems requiring fluorescence reporters, lasers, and imaging detectors. This substitution directly addresses the cost issue while preserving the essential detection function.
3Measurement precision
If conventional molecular electronic devices are used, then single molecule detection is achieved, but scalability and manufacturability are limited
Solution Approach 1:
The patent divides the detection system into modular sensor elements that can be replicated and arranged in arrays. Each sensor element consists of discrete electrodes and can independently detect single molecules. This segmentation allows the system to scale from detecting one molecule to detecting millions of molecules simultaneously by simply adding more identical modular units, thereby achieving both single-molecule precision and high scalability.
Solution Approach 2:
The patent creates universal sensor elements that can detect various types of DNA molecules using the same basic electrode structure and detection principle. This universality allows a single device design to handle diverse sequencing applications, enabling mass production and scalability without requiring different specialized devices for different molecules.
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
This approach facilitates the rapid and inexpensive detection of DNA molecules, improving the scalability and manufacturability of molecular sensors, reducing costs, and enhancing the accuracy of genome sequencing, making it more practical for widespread use in precision medicine.
Implementation Method 1
The development of molecular sensors using a tri-layer thin film device stack with vertically aligned electrodes and oblique deposition techniques allows for high-density device arrays with low surface area
Data Source
AI summary
A molecular sensor includes a substrate defining a substrate plane, and a plurality of pairs of electrode sheets above or below the substrate at an angle to the substrate plane. The molecular sensor further includes a plurality of inner dielectric sheets between each electrode sheet in each pair of electrode sheets of the plurality of pairs, and an outer dielectric sheet between each pair of electrode sheets of the plurality of pairs.