Plasma jets can kill new coronaviruses on surfaces such as metals, leather and plastics, according to a study that suggests plasma could promise a significant breakthrough in the fight against the spread of COVID-19.
Plasma is one of the four basic states of matter and can be formed by heating a stationary gas or subjecting it to a strong electromagnetic field.
A June modeling study, published in the journal Physics Floyds, killed new strains of coronovirus on surfaces such as metal, leather and plastic in a 30-second treatment with cold atmospheric plasma fed to the argon.
Researchers at the University of California, Los Angeles (UCLA) in the United States used an atmospheric pressure plasma jet, which they built with a 3D printer, to spray surfaces treated with Circe-Cove cultures -2.
Surfaces included plastic, metal, cardboard and basketball, football and baseball leather.
Sprays using argon-fed plasma killed all coronoviruses on six cells in less than three minutes, and most viruses perished within 30 seconds.
Further testing revealed that the virus was destroyed within a similar timeframe on cotton with a face mask.
The surfaces of new coronoviruses can remain infectious for several hours. Richard E., author of the study According to Virz, the results show considerable potential for the use of plasma to prevent the virus transmission cycle.
Virz said: “This is just the start. We are very confident and have high expectations for plasma in future work. In the future, many answers for the scientific community will come from plasma. ”
A relatively new technology, cooled atmospheric plasma is an ionized gas at near room temperature that has been shown to be effective in cancer treatment, wound healing, dentistry, and other medical applications.
Researchers performed a similar coronovirus test with helium-fed plasma, but helium was not effective even with treatments lasting up to five minutes.
They believe this was due to lower levels of reactive oxygen and reactive nitrogen when using gas fed with helium than argon.
The researchers said they are building a compact device, which can be widely used to treat surfaces of coronaviruses with plasma.
They said it was a safer option than chemicals or other treatments.
(Except for the title, this story was not edited by NDTV staff and posted from a syndicated feed.)