Ultraviolet (UV) light is part of the electromagnetic spectrum that falls in between the region of X-Rays and visible light. It has the ability to inactivate bacteria, fungi, and also other types of viruses. However, the problem that arises in using UVC light against the currently ongoing COVID-19 virus is that no reliable data is available on the subject of irradiation doses and optimal wavelengths.
To solve this problem, researchers have recently collaborated on the CORSA project. In this project, they will further try to inactivate respiratory viruses on surfaces and skin with the help of UVC Light. The team is set to develop a special form of UVC LEDs and will investigate parameters of irradiation doses, virus habitats, and wavelengths.
This new study may boost the UVC LED Market as it would provide fundamental insights on methods with which UVC radiation can be used for effectively fighting against SARS – CoV-2 and other types of viruses. UVC LEDs are the best way to do it as they are small in size and can be precisely adjusted to the optimum wavelength. They are also non-toxic, in comparison to conventional mercury vapor lamps. In addition, they have also been known to be considerably effective and safe for use.
Scientists are using UVC LEDs with a wavelength of 270 nm to make the foundation for irradiation of non-living surfaces, particularly in air filters. This type of UVC LED will be best for those non-living surfaces that are not best for chemical disinfection. Researchers also studied the ways in which coronavirus can be eliminated from ventilation systems while they circulate air or filters are irradiated. In between this process, they determined the needful number of times led to that inactivation of the virus effectively. Also, total doses are needed for optimal irradiation.
The study will also be looking into LEDs with emissions around 233nm. They would be used on humans directly to test the effectiveness of UVC radiation in aerosols, human skin, and animal skin. As these LEDs cause little to no damage to humans, they are a well-liked solution for antisepsis. Moreover, they can also be used to disinfect populated indoor areas like schools, theaters, operating rooms, etc.
Scientists have based their research on previously made systems. Such as the recently made irradiation system that consists of 265 nm UV LEDs. 128 of the LEDs present in the system help disinfecting day-to-day objects like cell phones, masks, etc.
In the coming future, experts believe that UVC LEDs, ventilation, and filter technology will come together to help reduce restrictions on social and economic life when the world is going through a pandemic, primarily indoor areas.
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