2023-07-17 03:56:00
A research team at Washington University in St. Louis has developed a detector that can detect corona particles in the air in 5 minutes. It works by sucking in a large amount of air and detecting corona particles in it. Corona detection uses the ‘nanobody’ immune protein possessed by llamas. / Provided by the research team
A ‘corona detector’ has been developed that can detect the presence of corona particles in 5 minutes in public places where people gather, such as cafes and hospitals. In the future, it is expected to be used in various ways, such as connecting an air conditioning system to the detector and starting ventilation or purification when corona is detected.
A research team at Washington University in St. Louis recently announced that it had developed a detector that detects corona particles. The detector detects between 7 and 35 corona particles per liter of air and can determine whether there is a possibility of corona infection in the area. The team believes that the detector’s sensitivity is as high as PCR nasal swab testing. The study was published in Nature Communications.
In order for the detector to be able to capture the corona particles floating in the air, it must be able to suck in that much air. The research team solved this problem by increasing the performance of the detector so that it might inhale 1,000 liters of air per minute. Inside the detector, the liquid is rotating at high speed, trapping the trapped corona particles in the liquid vortex, allowing them to converge. Corona particles not trapped in the vortex are filtered out by the detector’s HEPA filter.
The ability to detect the collected corona particles is thanks to the special immune protein ‘Nanobody’ biosensor found in llamas and camels. Nanobodies have a simpler structure than human antibodies and are smaller in size and have higher stability. After binding and holding the corona spike protein with a nanobody, tyrosine amino acids on the surface of the corona are oxidized by flowing an electric current. The change in voltage generated at this time can detect the amount of corona particles.
The research team plans to improve the detector’s loud noise and high manufacturing cost in the future. The research team said, “We plan to develop technology to detect other viruses such as influenza and adeno while using the detector to investigate viruses in public places such as hospitals and airports.”
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