Metamaterial Array for Coronavirus Mutation Detection

The patent changes the detection parameter from genetic material amplification (PCR) to direct protein structure analysis using terahertz spectroscopy. By targeting the unique terahertz absorption spectra of viral proteins, the system achieves rapid detection within minutes while maintaining high accuracy through fingerprint-like spectral identification of coronavirus mutations.

The patent replaces the mechanical/chemical amplification process of PCR with a direct optical detection method using terahertz electromagnetic waves. The metamaterial-enhanced terahertz sensor directly detects protein vibrations and structural characteristics, eliminating the multi-step amplification process and reducing test time from hours to minutes.

The patent applies local quality by focusing detection on specific local characteristics of viral proteins - the unique terahertz absorption spectra of amino acid sequences and protein secondary structures. The metamaterial sensor detects local vibrational modes and hydrogen bonding patterns that serve as molecular fingerprints, enabling precise distinction between similar coronaviruses despite overall structural similarity.

The patent uses terahertz spectral signatures as molecular 'colors' to differentiate between coronavirus variants. Each virus type exhibits a unique terahertz absorption spectrum analogous to color, allowing the sensor to rapidly identify and distinguish between SARS-CoV-2, SARS-CoV, and other betacoronaviruses based on their characteristic spectral patterns.

The patent employs composite materials by integrating metamaterial structures with terahertz sensors. The metamaterial layer, composed of sub-wavelength resonant elements, enhances the terahertz signal from biological samples through localized electromagnetic field confinement and resonance effects, dramatically improving signal-to-noise ratio while maintaining a relatively simple overall device architecture.

The metamaterial acts as an intermediary between the terahertz source and the biological sample, mediating the interaction by concentrating electromagnetic energy at the sample interface. This intermediary structure amplifies the weak terahertz signals from proteins and amino acids without requiring complex cryogenic systems or signal averaging techniques.

The patent exploits mechanical vibrations of protein molecules in the terahertz frequency range. Different amino acid sequences and protein structures vibrate at characteristic frequencies, creating unique spectral fingerprints. This allows the sensor to detect even minor mutations in coronavirus proteins by identifying changes in their vibrational modes, despite high overall sequence similarity.

The patent performs preliminary action by preparing the biological sample on the metamaterial sensor surface before terahertz measurement. This pre-positioning ensures optimal interaction between the terahertz waves and the viral proteins, maximizing signal strength and enabling accurate mutation detection without requiring complex sample processing or amplification steps during measurement.