ʻO ka World Health Organization a me ka US Centers for Disease Control e ʻike ʻo nā aerosol ke kumu mua no ka hoʻolaha ʻana o ka maʻi COVID-19. ʻO nā aerosol nā ʻāpana liʻiliʻi o ka wai a i ʻole nā mea ʻē aʻe e hiki ke hoʻomau i ka lewa no ka manawa lōʻihi, liʻiliʻi e komo i ka ʻōnaehana hanu.
Hoʻokuʻu ka poʻe i nā aerosol ke hanu lākou, ʻuʻu, kamaʻilio, hoʻōho a hīmeni paha. Hiki i kēia mau aerosol ke loaʻa i ka maʻi inā loaʻa lākou i ka COVID-19. ʻO ka hanu ʻana i ka nui o nā aerosol coronavirus hiki ke maʻi i ke kanaka. Ma ka koi ʻana i ka poʻe e ʻaʻahu i nā masks, ka hoʻomaikaʻi ʻana i ka ea o loko a me nā ʻōnaehana kānana ea, ka hōʻemi ʻana i ka ʻike pilikino a me ka hōʻemi ʻana i ka nui o nā aerosol i ke kaiapuni nā mea nui no ka pale ʻana i ka hoʻolaha ʻana o COVID-19 aerosol.
He mea weliweli ka noiʻi ʻana i nā maʻi maʻi hou, a he mea kakaʻikahi i loko o nā hale hana me nā pae kiʻekiʻe o ka biosafety. ʻO nā haʻawina āpau a hiki i kēia lā ma nā masks a i ʻole ka hoʻomaʻamaʻa kānana i ka wā maʻi maʻi i hoʻohana i nā mea ʻē aʻe i manaʻo ʻia e hoʻohālike i ka nui a me ke ʻano o nā aerosol SARS-CoV-2. Ke hoʻomaikaʻi nei ka noiʻi hou i kēlā, e hoʻāʻo ana i nā hopena saline aerosolized a me nā aerosol i loaʻa i ka coronavirus mai ka ʻohana like me ka maʻi i hoʻokumu ʻia ai ka COVID-19 akā hoʻopilikia wale i nā ʻiole.
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.
ʻO keʻano hana hana, i kapaʻia he electrospinning, he kumukūʻai kūpono a hiki ke hoʻohanaʻia no ka hana nuiʻana i nā kānana nanofiber no nā mea pale pono'ī a me nā pūnaewele kānana ea. Ke waiho nei ka Electrospinning i kahi hoʻoili electrostatic ma nā nanofibers, kahi e hoʻonui ai i ko lākou hiki ke hopu i nā aerosol, a ʻo kona porosity kiʻekiʻe e maʻalahi ke hanu ʻoiai ke kau ʻana i kahi kānana nanofiber electrospun.
“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.”
Ka manawa hoʻouna: Nov-01-2022
