Raws li xov xwm tshaj tawm txawv teb chaws, Nyij Pooj Asahi Kasei thiab Nyij Pooj Nara Medical University (Nara Medical University) tau koom ua ke kawm qhov tsis ua haujlwm ntawm UVC LEDs nrog lub nthwv dej ntawm 226nm ntawm tus kabmob tshiab thiab nws cuam tshuam rau cov tawv nqaij tawv nqaij, thiab tsis ntev los no Cov txiaj ntsig ntawm txoj kev tshawb fawb tau tshaj tawm.
Cov txiaj ntsig tshawb fawb pom tias 226nm UVC LED tuaj yeem ua rau muaj tus kabmob tshiab sai sai, thiab piv rau 270nm UVC LED, 226nm UVC LED muaj qhov cuam tshuam tsawg kawg rau cov tawv nqaij tawv nqaij.
Nws tau nkag siab tias Crystal IS, lub hauv paus ntawm Asahi Kasei, tau ua lag luam Klaran UVC LED nrog lub nthwv dej ntawm 265nm, thiab nws lub teeb pom kev zoo kom tsis muaj menyuam Klaran UVC LED tau siv rau Daikin Industrial' s UV Streamer huab cua lim .
Nyob rau theem no, Crystal IS txhawb Asahi Kasei' kev tshawb fawb ntawm cov nthwv dej luv luv. Tsis ntev los no, raws li kev tshawb fawb thiab kev txhim kho, Asahi Kasei tau tsim 226nm UVC LED cov khoom lag luam qauv, thiab tau pib ntau qhov kev sim rau nws qhov tsis ua haujlwm cuam tshuam rau tus kabmob tshiab thiab nws cuam tshuam rau cov tsiaj tawv nqaij.
Kev ntsuam xyuas kom tsis muaj menyuam
Raws li pom hauv daim duab, 100 226nm UVC LEDs tau muab tso rau ntawm lub vaj huam sib luag hauv 10 × 10 array, thiab 270nm UVC LEDs tau muab tso rau hauv cov kab sib xws rau kev sib piv.
Txhua UVC LEDs siv hauv txoj kev tshawb fawb no yog ua raws li Crystal IS' tus tswv AlN substrate thiab AlGaN thev naus laus zis. Txhua qhov kev sim tshuaj lom neeg tau ua tiav hauv Qib 3 Biosafety Testing Facility ntawm Nara Medical University. Cov kws tshawb fawb siv ntau txoj hauv kev tsim nyog thiab nyab xeeb los tswj cov kab mob sib kis.
Tus kws tshawb fawb tau txhaj tshuaj uas muaj cov kab mob tshiab ua rau tus kab mob petri thiab tso cai rau nws kom qhuav. 226nm thiab 270nm UVC LED vaj huam sib luag arrays yog irradiated nrog cov zis tib yam (440μW/cm2), thiab tom qab ntawd tus kab mob tau sau, thiab tus nqi kis tau raug ntsuas los ntawm cov txheej txheem plaque (txoj hauv kev ntsuas lub ntim ntim tom qab tus kab mob kis mus rau ntawm tes). Cov txiaj ntsig tau qhia tias 99.9% ntawm cov kab mob tuaj yeem tsis ua haujlwm los ntawm UVC LEDs ntawm ob lub nthwv dej ntev txog 6 vib nas this, raws li qhia hauv daim duab 2.
Kev nyab xeeb xeem
Ntxiv rau cov kab mob tua kab mob, Asahi Kasei thiab Nara Medical University tseem tau sim cov teebmeem ntawm 226nm UVC LEDs ntawm cov tawv nqaij ntawm cov nas, nrog lub hom phiaj kwv yees kev phom sij ntawm 226nm UVC LEDs txheeb ze rau 270nm UVC LEDs ntawm tsiaj tawv nqaij.
Cov kws tshawb fawb tau faib cov nas tawv nqaij ua ob txheej thiab nthuav tawm rau 226nm UVC LED lossis 270nm UVC LED lub teeb, siv koob tshuaj 100mJ/cm2 thiab 500mJ/cm2.
Tom qab raug hluav taws xob, lub xovtooj sab saum toj raug tshem tawm, MTT reagent zas xim (tetrazolium ntsev xim xim) tau siv rau hauv qab ntawm tes, thiab tom qab ntawd nws qhov nqus tau raug ntsuas los kwv yees cov txheeb ze sib piv ntawm cov hauv qab ua haujlwm tau zoo. Cov zas xim qhia tias muaj pes tsawg lub cell nyob.
Cov txiaj ntsig ntsuas tau qhia tias 226nm UVC LED nrog lub koob tshuaj ultraviolet ntawm 100mJ/cm2 muaj qhov cuam tshuam tsis zoo ntawm cov tawv nqaij ntawm cov nas; thiab piv nrog 270nm UVC LED, 226nm UVC LED nrog rau qhov siv tshuaj ultraviolet ntawm 500mJ/cm2 muaj qhov cuam tshuam tsawg dua ntawm cov kab mob hauv qab uas muaj ntau ntxiv, raws li qhia hauv daim duab 4 thiab daim duab 5.
Cov txiaj ntsig tshawb fawb saum toj no qhia tias 226nm UVC LED tuaj yeem ua haujlwm sai sai rau tus kabmob tshiab. Piv nrog rau 270nm UVC LED uas twb muaj lawm, 226nm muaj qhov cuam tshuam tsawg dua ntawm cov tsiaj tawv nqaij. Qhov no qhia ntxiv tias nws yuav muaj kev nyab xeeb siv 226nm UVC LED ntawm caj npab lossis Ib tus neeg tau ua kom tsis huv cov khoom nyob ze.
ntsiab lus
Hauv ob xyoos dhau los, txhawm rau txhawb kev ua kom nrov nrov thiab siv UVC LEDs, cov neeg tsim khoom thoob ntiaj teb tau nrawm dua qhov ua tau zoo hauv UVC LED thev naus laus zis, suav nrog kev tshawb fawb ntawm luv luv nthwv dej UVC LEDs, xws li 222nm UVC thev naus laus zis uas yog txhua qhov kev npau taws kawg. xyoo.
Txawm hais tias ntau qhov kev tshawb fawb tau ua pov thawj qhov ua kom tsis muaj menyuam ntawm 222nm UVC thiab tsis muaj kev phom sij rau tib neeg lub cev, qhov tseeb, qhov ua tau thiab muaj kev nyab xeeb ntawm kev tsis sib haum txuas ntxiv mus, thiab tam sim no 222nm UVC feem ntau yog ua los ntawm cov teeb pom kev zoo, thiab LED cov kev daws teeb meem tseem tab tom ua kawm. Nyob rau hauv kev kawm.
Kuv ntseeg tias 226nm UVC LED kuj tseem xav tau pov thawj ntxiv. Ntxiv mus, lub sijhawm no Asahi Kasei thiab Nara Medical University tsis tau kuaj tus kab mob hauv lub cev thiab nws cuam tshuam rau tib neeg lub cev. Yog li ntawd, xav tau kev tshawb fawb ntxiv txog kev nyab xeeb thiab ua tau. Thiab xeem.
Txhawm rau txhawb kev lag luam ntawm 226nm UVC LED thev naus laus zis, Asahi Kasei tseem txuas ntxiv txhawb kev tshawb fawb ntsig txog thiab txhim kho kev ua haujlwm. Nws tau tshaj tawm tias Asahi Kasei (Crystal IS) UVC LEDs tau tsim los siv AlN substrates, yog li lawv cov khoom muaj qhov tsis sib xws ntawm lub lattice tsawg, yooj yim kom ua tiav< 265nm="" wavelength="" thiab="" muaj="" lub="" zog="" kho="" qhov="" muag="" khoom="" muaj="" peev="">
Nws tsim nyog sau cia tias qhov no yog lub ntiaj teb' kev tshawb fawb thawj zaug ntawm UVC LEDs nrog lub nthwv dej ntawm 226nm. Nws kuj yog xov xwm zoo rau UVC LED kev lag luam kom ua tiav. Yav tom ntej, kev tshawb fawb ntau ntxiv thiab kev sim sim yuav nyiam ntau dua. (Cov ntawv: LEDinside Janice)
