UV-LED Teeb, Tshuaj tua kab mob Covid-19 Thiab HIV

UV-LED teeb feem ntau xa mus rau LEDs nrog lub nruab nrab wavelength ntawm lub teeb emission qis dua 400 nm, tab sis qee zaum thaum lub teeb emission wavelength ntau dua 380 nm, nws yog hu ua ze-ultraviolet LED, thiab thaum nws tsawg dua 300 nm, nws yog hu ua far-ultraviolet LED. Vim muaj kev ua kom tsis muaj menyuam ntawm lub teeb luv luv, UV LEDs feem ntau yog siv rau hauv biomedical, anti-counterfeiting identification, purification (dej, huab cua, thiab lwm yam) teb, computer cov ntaub ntawv khaws cia thiab tub rog.

Raws li cov yam ntxwv ntawm UV-LED teeb, hauv kev tshawb fawb tshiab, cov kws tshawb fawb los ntawm University of Toronto's Scarborough campus pom tias kev siv UV-LED teeb tuaj yeem rhuav tshem tus kabmob coronavirus thiab HIV. Lub teeb tuaj yeem hloov pauv ntawm lub teeb dawb thiab cov tshuaj tua kab mob ultraviolet (UV) lub teeb. Nrog pheej yig retrofits, lawv kuj siv tau nyob rau hauv ntau yam qauv teeb pom kev zoo fixtures, coj ib tug "kev thov tshwj xeeb" rau pej xeem chaw, hais tias Christina Guzzo, tus kws sau ntawv laus ntawm txoj kev tshawb no.

Cov kws tshawb fawb thawj zaug tau sim lub teeb ntawm cov kab mob spores (Bacillus pumilus spores), uas paub txog lawv qhov kev tiv thaiv hluav taws xob no. "Yog tias koj tuaj yeem tua cov spores, ces koj yuav tsum muaj peev xwm hais tau tias koj yuav tsum tua tau lwm yam kab mob uas koj niaj hnub ntsib hauv ib puag ncig," cov kws tshawb fawb tau hais tias, qhia tias tsis pub dhau 20 vib nas this ntawm UV raug, cov spores. Kev loj hlob tus nqi txo los ntawm 99 feem pua.

Cov kws tshawb fawb tom qab ntawd tsim cov tee dej uas muaj tus kabmob coronavirus lossis HIV los sim ua txoj hauv kev uas tib neeg ntsib tus kabmob hauv pej xeem, xws li hnoos thiab txham. Cov tee ntawd tau raug UV teeb thiab muab tso rau hauv kab lis kev cai kom pom tias muaj tus kab mob tseem nyob. Tom qab tsuas yog 30 vib nas this ntawm kev kis, tus kab mob muaj peev xwm kis tau los ntawm 93 feem pua.

Tau kawg, thaum lub peev xwm tiv thaiv kab mob ntawm UV-LED teeb nyob rau hauv huab cua tau tsim los ntev, txawm li cas los xij, nws txoj kev siv dav hauv cov chaw pej xeem raug txwv - dav-spectrum UVC lub teeb nyob rau hauv lub wavelength thaj tsam ntawm 200 thiab 400 nanometers (nm) rhuav tshem. Cov ntawv cog lus molecular uas tuav DNA ua ke tuaj yeem ua tau zoo heev ntawm kev tua kab mob thiab kab mob. Lub teeb UV no feem ntau yog siv los ua kom tsis muaj menyuam cov khoom siv phais. Tab sis ib txwm siv tshuaj tua kab mob UV teeb kuj ua rau tib neeg noj qab haus huv thiab tuaj yeem ua rau mob qog noj ntshav thiab mob cataracts, cuam tshuam nws kev siv hauv cov chaw pej xeem.

Hauv kev teb, pab pawg tshawb fawb tau ua haujlwm nrog Safe Antivirus Technologies los tsim ib qho tshwj xeeb UV-LED teeb pom kev zoo module. Nrog cov lus tsa suab sensors, lub teeb hloov pauv mus rau UV teeb thaum tsis muaj leej twg nyob hauv chav, ces hloov mus rau lub teeb qub thaum muaj kev txav mus los.