Developed by Boeing and The University of Queensland (UQ), the joint research project was tested aboard Boeing's ecoDemonstrator last year as part of the company's Confident Travel Initiative.
"While testing continues on orbit and on Earth, we're encouraged by the preliminary results of the antimicrobial chemical compound," said Mike Delaney, Boeing's chief aerospace safety officer. "There is the potential for broad-based applicability for a surface coating like this when used in conjunction with other measures to prevent disease transmission."
The ISS experiment tests two identical sets of objects, including an airplane seat buckle, fabric from airplane seats and seat belts, and parts of an armrest and a tray table. One set received the antimicrobial surface coating, the other did not. ISS crew members are touching both sets of objects every few days to transfer microbes naturally occurring on human skin; no microbe samples were sent to the station for this experiment. Later this year, the test objects will be returned to Earth for analysis at Boeing's labs to measure the effectiveness of the surface coating in a space environment.
"After years of development, it is truly exciting to see our research in space," said Professor Michael Monteiro from UQ's Australian Institute for Bioengineering and Nanotechnology. "The primary purpose of our antimicrobial coating was to help protect space missions. After the current pandemic struck, we modified the coating's formula to also target the COVID-19 virus if it is present on a surface on Earth. We look forward to continuing our testing regimen and working to gain regulatory approvals."
An antimicrobial surface coating in a spacecraft could help ensure the health of the crew and protect the spacecraft's systems from bacteria – and ultimately may help prevent interplanetary contamination from Earth-borne or another planet's microbes.
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