Acoustical Slot Mode Sensor for the Rapid Coronaviruses Detection

Area of Science:

• Biosensing
• Virology
• Acoustic wave technology

Background:

• Coronaviruses pose significant threats to animal and human health.
• Rapid and accurate detection methods are crucial for disease control.
• Existing detection techniques can be time-consuming or require sample pre-processing.

Purpose of the Study:

• To develop and demonstrate a rapid detection method for coronaviruses using an acoustic sensor.
• To evaluate the sensor's performance in detecting transmissible gastroenteritis virus (TGEV) in aqueous solutions.
• To assess the method's applicability across a range of solution conductivities and in the presence of other viral particles.

Main Methods:

• Utilized an acoustic sensor based on a slot wave in an acoustic delay line.
• Employed specific anti-TGEV antibodies for virus capture and detection.
• Analyzed changes in resonant peak depth and frequency on the sensor's insertion loss spectrum.
• Tested detection in aqueous solutions with conductivity ranging from 1.9 to 900 μs/cm.

Main Results:

• The acoustic sensor successfully detected TGEV by observing changes in resonant peak characteristics upon antibody-virus interaction.
• The method demonstrated effectiveness in aqueous solutions with varying conductivity.
• Detection was feasible even in the presence of foreign viral particles.
• The entire analysis process was completed in under 10 minutes.

Conclusions:

• The developed acoustic sensor provides a rapid and sensitive method for coronavirus detection.
• The technique is robust, functioning effectively in diverse aqueous environments.
• This biosensor offers a promising tool for quick point-of-care or field-based viral diagnostics.