Cov chaw tsim khoom lag luam LED Nichia tau tshaj tawm NCSU434B LED ci ntawm 280 nm thiab xa hluav taws xob zoo ntawm 62 mW los ntawm kev tsav tam sim no ntawm 350 mA. Kev ua haujlwm ultraviolet (UV) hauv cov kab mob tua kab mob UV-C (100–280 nm) tau sau tseg los ua kom tsis muaj tus kab mob SARs-CoV-2 uas ua rau COVID-19. Nichia hais tias LED tsim nyog rau siv hauv dej, nyob ze saum npoo av, thiab cov kab mob tua kab mob hauv huab cua, thiab muaj kev lag luam tam sim ntawd.
Nichia tseem tsom mus rau nws qhov kev siv UV-C ntawm 280 nm, txawm hais tias qhov ua tau zoo ntawm cov tshuaj tua kab tau pom tias nyob hauv thaj tsam 260-265-nm. Peb tau tshaj tawm tsab xov xwm tshwj xeeb thaum pib xyoo no tsom mus rau kev siv bandwidth, koob tshuaj, thiab kev tua kab mob kom zoo. Tab sis cov tuam txhab feem ntau muaj peev xwm xa UV-C LEDs ntawm qhov ntev dua ntais uas muaj cov hluav taws xob ntau dua thiab lub neej ntev dua. Cov laj thawj rau qhov kev sib pauv ntawd tau faus hauv kev tshawb fawb lub cev thiab dhau ntawm peb qhov ntawm no, tab sis koj tuaj yeem nyeem txog cov teeb meem ntawm kev tsim UV-C LEDs hauv kab lus los ntawm xyoo tas los.
Qhov tseeb, Nichia tau hais txog ob qho tib si lub teeb ci siab thiab lub neej yog qhov tseem ceeb hauv kev hloov pauv ntawm nws cov LEDs thiab thaum kawg hauv kev siv tshuaj tua kab kom zoo. Lub tuam txhab yuav tsis tham txog cov ntsiab lus ntawm qhov kev kov yeej tshwm sim. Tab sis Erik Swensen, tus thawj coj ntawm Nichia North America, tau hais tias lub tuam txhab yuav tsis tso tawm cov khoom lag luam uas tsis xa kev ntseeg siab hauv 10,000-teev ntau ntawm L70 thiab ntawm qhov kub tiag tiag. Txawm li cas los xij, lub tuam txhab tau thawb ob qho tib si ci ntsa iab thiab ua tau zoo ntawm phab ntsa (WPE) tas li ntawm 280 nm.
Nichia yav dhau los ua tau zoo tshaj UV-C LED tau yog NCSU334B LED. Cov cuab yeej 6.8 × 6.8-mm tau tshaj tawm thaum kawg ntawm 2020, muaj peev xwm xa 70 mW los ntawm kev tsav tam sim no ntawm 350 mW. Qee lub sijhawm sau npe cov khoom siv lub zog muaj zog raws li cov txheej txheem qub kev faib tawm ntawm cov khoom siv LED los ntawm kev tsav tam sim no thiab wattage. NCSU434A cov cuab yeej tau hais nyob rau lub sijhawm ua lub zog nruab nrab ua haujlwm tsim 17.5 mW ntawm 100 mA.
Dab tsi yog qhov tseeb yog tias Nichia tau tsav kev ua haujlwm ntawm txhua lub vectors hauv cuaj lub hlis ua ntej. NCSU434B yuav luag zoo ib yam li NCSU334B hauv qhov ci ci hauv pob me dua. Ob qho khoom lag luam hauv tsev neeg muaj qhov sib piv siab (piv rau pom pom lub teeb pom kev zoo) rau pem hauv ntej qhov hluav taws xob ntawm 5.5–6V yog li WPE yuav nyob qis dua 4%.
Pob me me yuav yog qhov tseem ceeb, raws li Nichia. Lub tuam txhab tau hais tias cov tsim qauv txheej txheem yuav tuaj yeem ntim cov LEDs kom ze dua ua ke txhawm rau ua kom muaj zog virucidal hauv cov qauv me me. Daim ntawv cog lus me me no yuav ua rau lub hom phiaj ntawm daim ntawv thov tau hais ua ntej.
Lub caij no, Nichia tau nyob ntawm cov neeg ua phem rau UV-C LED ntau dua hauv kev tsim cov ntaub ntawv hais txog kev tua kab mob ntawm nws cov khoom. Nyuam qhuav pib lub xyoo no, lub tuam txhab tau tawm tsam UV-C ntu kom xa cov ntsiab lus tiav ntawm UV-C LED kev ua tau zoo nrog Swenson sau ib kab lus hauv lub Peb Hlis qhov teeb meem ntawm peb cov ntawv xov xwm.
Nrog rau kev tshaj tawm ntawm LED tshiab, Nichia tau muab qee cov ntsiab lus ntawm kev sim ua los ntawm Xibfwb Jiro Yasuda ntawm Lub Chaw Tshawb Fawb Hauv Tebchaws rau Kev Tswj thiab Tiv Thaiv Kab Mob Sib Kis ntawm Lub Tsev Haujlwm Tropical Medicine ntawm Nagasaki University. Cov txiaj ntsig tau piav qhia nyob ze. Ib qho dhau ntawm ib puag ncig ntawm 1 mJ/cm2 tsuas yog 4.5% ntawm tus kab mob ua haujlwm. Ua kom qhov ntau npaum li ntawm 4 mJ/cm2 ua rau tus kab mob tsis tuaj yeem tshawb pom.
Pom zoo, muaj cov ntsiab lus ploj hauv Nichia qhov kev piav qhia ntawm kev xeem. Cov kev ntsuas no tshwm sim nyob rau hauv hom kev tua kab mob hauv huab cua uas yuav siv LED tshiab. Tab sis cov ntsiab lus xws li qhov ntev yuav yog qhov tseem ceeb hauv kev txiav txim siab ntau npaum li cas thiab ua tau zoo.
