For confirmed coronavirus disease 2019 (COVID-19) cases, reported illnesses have ranged from mild symptoms to severe illness and death. Symptoms can include: fever, cough and shortness of breath.
The coronavirus is sensitive to ultraviolet-C (UVC) light. The UVC light can destroy the molecular structure of DNA (Deoxyribonucleic acid) and RNA (Ribonucleic Acid) of microbial cells, causing the death of growing cells and/or regenerative cells. Especially, the most effective sterilization wavelength of UVC light is between 240nm and 280m. The coronavirus lethal dose is 1085mJ/cm2 at 275nm.
The virus is thought to spread mainly from person-to-person. Between people who are in close contact with one another (within about 6 feet). Via respiratory droplets produced when an infected person coughs or sneezes. These droplets can land in the mouths or noses of people who are nearby or possibly be inhaled into the lungs. It may be possible that a person can get COVID-19 by touching a surface or object that has the virus on it and then touching their own mouth, nose, or possibly their eyes. For respiratory droplets transmission and contact transmission, UVC light can play a positive role.
Against respiratory droplets spread, for example, UVC sterilization can be attached to the air circulation system, such as the application of central air condition system for large space, indoor air purifier. As well as the personal application of local air circulation sterilization mask, through the air circulation system sterilization of the airflow, to kill bacteria and viruses. For some occasions with large human flow, such as airports, stations, hospitals, shopping malls and other closed spaces, it is very necessary to add UVC sterilization module into the air circulation system because of the larger number of transmission and infected groups, so as to suppress the spread of the virus at the source.
For contact transmission, UVC sterilization also has more applications. For example, the elevator buttons in public places, the handrails of escalators and the door handles are the most frequent places for people coming in and out of public places. For some people daily contact frequency is high, and there is a greater risk of carrying bacteria and viruses on the surface, such as the surface of the cell phone, dishes, cups, chopsticks. Design portable germicidal products that can thoroughly sterilize these suspicious surfaces and add an insurance policy to personal hygiene. Make your life more hygienic and safe.
In the current epidemic prevention and control of the critical period, UV LED sterilization technology has begun to be widely used in the world’s densely populated areas. In order to prevent the international spread of the virus, the Los Angeles international airport, San Francisco international airport and the New York John f. Kennedy international airport has enabled UVC sterilization robots on all the walkways within the aircraft cabin to conduct comprehensive sterilization. Adopted by the robot internal core light gallium nitride (GaN) UV LED technology is currently one of the new technologies of UV LED sterilization antivirus. Using UVC light, this system destroys viruses, bacteria and superbugs on surfaces, as well as in the ambient air in the plane. Moreover, in response to the outbreak of coronavirus pneumonia, China has bought self-driving disinfection robots with UVC lights for use in hospitals. More than 2,000 hospitals will now have the ability to ensure effective disinfection and protect patients and staff.