BAW Resonator Structure for Label-Free Viral Mass Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for detecting viral infections, such as COVID-19, are slow, expensive, and require centralized laboratories, making them impractical for rapid on-site diagnosis, especially due to the small size and low weight of viruses, which complicates accurate detection in remote or field settings.
Innovation Solution
The development of bulk acoustic wave resonators that operate in a thickness extensional main resonant mode, utilizing a multilayer metal acoustic reflector and harmonically tuned top sensor electrodes, allowing for sensitive and label-free detection of biomolecules like viruses in real-time by shifting resonance frequencies in response to mass changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional laboratory-based assays are used for viral detection, then detection accuracy can be maintained, but detection speed decreases and cost increases
Solution Approach 1:
The patent replaces complex mechanical laboratory assay systems with an acoustic resonator system that uses sound waves to detect viral particles. The resonator detects mass changes on its surface through frequency shifts, eliminating the need for complex laboratory equipment while maintaining detection accuracy and enabling rapid results.
2Reliability
If centralized laboratory testing is used, then detection reliability is improved, but device complexity and operational difficulty increase
Solution Approach 1:
The patent changes the detection parameter from complex chemical/biological assays to simple acoustic frequency measurements. The resonator's natural frequency shifts in response to viral mass, providing a simple, reliable signal that can be measured with basic electronics rather than complex laboratory equipment.
3Measurement precision
If fluorescent tags or chemical labels are used for detection, then measurement precision improves, but device complexity and cost increase
Solution Approach 1:
The patent extracts and eliminates the need for fluorescent tags and chemical labels from the detection system. Instead of using these complex labeling methods, the resonator directly detects the mass of viral particles through acoustic frequency shifts, simplifying the system while maintaining detection sensitivity.
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 enables rapid, accurate, and cost-effective on-site detection of viral pathogens without the need for fluorescent tags or chemical labels, improving diagnostic capabilities in remote locations and field settings.
Implementation Method 1
allowing for sensitive and label-free detection of biomolecules like viruses in real-time by shifting resonance frequencies in response to mass changes
Implementation Method 2
stacks of piezoelectric material layers (e.g., stacks of normal axis piezoelectric layer 1005B, 1005C and reverse axis piezoelectric layer 1007B, 1007C)
Data Source
AI summary
Techniques for improving Bulk Acoustic Wave (BAW) resonator structures are disclosed, including fluidic systems, oscillators and systems that may include such devices. A bulk acoustic wave (BAW) resonator may comprise a substrate and a first layer of piezoelectric material. The bulk acoustic wave (BAW) resonator may comprise a top electrode. A sensing region may be acoustically coupled with the top electrode of the bulk acoustic wave (BAW) resonator.