Letsani kufalikira kwandege kwa korona watsopano! Asayansi amapanga nanofilter kuti agwire pafupifupi 100% ya ma aerosols a coronavirus

Onse a World Health Organisation ndi US Centers for Disease Control amazindikira kuti ma aerosols ndiye njira yayikulu yofalitsira kachilombo ka COVID-19. Ma aerosols ndi tinthu ting'onoting'ono tamadzi kapena zinthu zina zomwe zimatha kuyimitsidwa mumlengalenga kwa nthawi yayitali, zing'onozing'ono zokwanira kulowa mkati mwa kupuma.

Anthu amatulutsa mpweya pamene akupuma, kutsokomola, kulankhula, kufuula kapena kuimba. Ma aerosols awa amathanso kukhala ndi kachilomboka ngati ali ndi COVID-19. Kukoka ma aerosol okwanira a coronavirus kumatha kudwalitsa munthu. Pakufuna kuti anthu azivala masks, kukonza mpweya wabwino m'nyumba ndi makina osefera mpweya, kuchepetsa kuwonekera kwa anthu komanso kuchepetsa kuchuluka kwa ma aerosols m'chilengedwe ndizofunikira kwambiri poletsa kufalikira kwa ma aerosols a COVID-19.

Kafukufuku wokhudza ma virus atsopano opatsirana ndi owopsa, ndipo sapezeka kawirikawiri m'ma laboratories omwe ali ndi chitetezo chambiri chambiri. Maphunziro onse mpaka pano okhudza masks kapena kusefera bwino pa nthawi ya mliri agwiritsa ntchito zida zina zomwe zimaganiziridwa kutengera kukula ndi machitidwe a ma aerosol a SARS-CoV-2. Kafukufuku watsopanoyu akuyenda bwino pamenepo, kuyesa mayankho a saline opangidwa ndi aerosolized ndi ma aerosol okhala ndi coronavirus yochokera kubanja lomwelo ndi kachilombo komwe kamayambitsa COVID-19 koma kumangokhudza mbewa.

Yun Shen and George Washington University colleague Danmeng Shuai created a nanofiber filter that delivers a high voltage through a drop of polyvinylidene fluoride liquid to a spinning thread about 300 nanometers in diameter—about 167 times thinner than a human hair . This process created pores just a few micrometers in diameter on the nanofibers’ surface, helping them capture 99.9 percent of coronavirus aerosols.

Njira yopangira, yomwe imadziwika kuti electrospinning, ndiyotsika mtengo ndipo imatha kugwiritsidwa ntchito kupanga zosefera za nanofiber pazida zodzitetezera komanso makina osefera mpweya. Electrospinning imasiyanso mphamvu ya electrostatic pa nanofibers, yomwe imapangitsa kuti athe kugwira ma aerosols, ndipo porosity yake yapamwamba imapangitsa kuti zikhale zosavuta kupuma pamene mukuvala electrospun nanofiber fyuluta.

“Electrospinning technology can facilitate the design and manufacture of masks and air filters,” said Prof. Yun Shen. “Using electrospinning technology to develop new types of masks and air filters has good filtration performance, economic feasibility and scalability. Being able to meet the demand for masks and air filters in the field is very promising.”