Tsis ntev los no, pab pawg tshawb fawb ntawm Li Dabing thiab Sun Xiaojuan ntawm Changchun Institute of Optics, Fine Mechanics thiab Physics, Suav Academy ntawm Kev Tshawb Fawb, thiab Xu Ke pab pawg tshawb fawb ntawm State Key Laboratory of Virology ntawm Wuhan University tau ua tiav kev ntxhov siab engineering, kev npaj khoom thiab cov cuab yeej npaj ntawm epitaxial AlGaN-raws li sib sib zog nqus ultraviolet LEDs ntawm lub zog compressive kev nyuaj siab AlN / sapphire template substrates, nrog rau kev tshawb fawb txog kev ua kom huv ntawm tib neeg ua pa RNA kab mob. AlGaN-raws li kev sib sib zog nqus ultraviolet LEDs nrog qhov sib txawv peak wavelengths ntawm 256 nm, 265 nm thiab 278 nm tau npaj, uas muaj cov tshuaj tua kab mob zoo rau tib neeg cov kab mob RNA.
Keeb kwm:
Tib neeg cov kab mob ua pa RNA, xws li SARS-CoV-2 thiab influenza A (IAV), ua rau muaj kev mob hnyav, kev tuag, kev poob nyiaj txiag, thiab kab mob kis thoob ntiaj teb. Yog li ntawd, yuav tsum tau tsim kom muaj txiaj ntsig zoo dua thiab dav-spectrum nto thiab ib puag ncig cov tshuaj tua kab mob kom txo tau txoj kev pheej hmoo ntawm kev kis tus kab mob RNA rau tib neeg.
Lub teeb ultraviolet sib sib zog nqus yog ib txoj hauv kev zoo los ua kom tsis muaj kab mob los ntawm kev cuam tshuam lawv cov genomes. Mercury teeb feem ntau yog siv los ntxuav cov kab mob, tab sis muaj qhov tsis zoo ntawm toxicity, brittleness, bulkiness, luv lifespan thiab ozone tiam. Raws li Minamata Convention, kev tsim khoom, ntshuam thiab xa tawm cov khoom uas muaj mercury raug txwv los ntawm 2020. Yuav tsum muaj kev ceev ceev rau cov khoom siv tshuaj tua kab mob thiab ua kom zoo. AlGaN sib sib zog nqus UV LEDs tuaj yeem hloov kho los ntawm 365 nm txog 210 nm thiab yog lwm txoj hauv kev rau mercury teeb kom tsis muaj menyuam vim lawv tsis muaj kuab paug, me me, thiab txuag hluav taws xob, raws li pom hauv daim duab 1.
Cov kev tshawb fawb tau pom tias AlGaN-raws li kev sib sib zog nqus ultraviolet LEDs tuaj yeem cuam tshuam cov kab mob xws li Escherichia coli, Staphylococcus aureus, thiab Candida albicans, thiab cov kab mob sib txawv muaj qhov sib txawv ntawm qhov sib txawv wavelengths. Lub wavelength qis dua 260 nm muaj qhov cuam tshuam zoo rau cov kab mob. Txawm li cas los xij, kev tshawb fawb txog kev ua kom huv ntawm AlGaN-raws li LEDs ntawm SAR-CoV-2 thiab IAV feem ntau yog tsom rau 265 ~ 365 nm, thiab muaj kev sib xyaw ua ke ntawm lub teeb pom kev zoo thiab cov kab mob tsawg. Qhov inactivation ntawm SARS-CoV-2 thiab IAV los ntawm ntau portable, luv dua-yav dhau AlGaN-raws li sib sib zog nqus UV LEDs yuav tsum raug kwv yees ntau dua.
AlGaN-raws li sib sib zog nqus UV LEDs feem ntau yog heteroepitaxial ntawm AlN / sapphire templates. Tshaj li ob xyoo dhau los, cov qauv zoo AlN / sapphire tau txais los ntawm ntau txoj hauv kev, ntawm cov txheej txheem kub-kub annealing yog kab tias cov ntawv thov kev lag luam zoo tshaj plaws vim nws qhov yooj yim, kev ua tau zoo, thiab ruaj khov. Txawm li cas los xij, qhov kub-kub kub-annealed AlN / sapphire templates feem ntau pom muaj zog compressive stresses, uas tuaj yeem cuam tshuam qhov zoo ntawm AlGaN sab sauv.
Ntawm qhov tod tes, muaj zog compressive kev ntxhov siab tuaj yeem ua rau SK kev loj hlob qauv, ua rau peb-seem cov qauv kob uas ua rau cov xov hlau tsis sib xws thiab cov npoo ntxhib. Ntawm qhov tod tes, muaj zog compressive kev ntxhov siab tuaj yeem ua rau muaj kev cuam tshuam traction, uas ua rau muaj qhov sib xyaw ua ke thiab tsis muaj doping efficiency. Tsis tas li ntawd, muaj zog compressive stresses yuav degrade lub cuab yeej thaum lub sij hawm tsim khoom. Yog li ntawd, kev so ntawm qhov muaj zog compressive kev nyuaj siab yog tsim nyog rau cov khoom siv epitaxial ntawm lub zog compressive kev nyuaj siab AlN / sapphire template.
Cov ntsiab lus tshawb fawb:
Hauv kev teb rau cov teeb meem saum toj no, pab pawg tshawb fawb ntawm Li Dabing thiab Sun Xiaojuan ntawm Changchun Institute of Optics, Fine Mechanics thiab Physics, Suav Academy ntawm Kev Tshawb Fawb, thiab Xu Ke pab pawg tshawb fawb ntawm State Key Laboratory ntawm Virology ntawm Wuhan University tau ua rau muaj kev ntxhov siab. engineering, kev npaj cov cuab yeej thiab cov cuab yeej npaj ntawm epitaxial AlGaN-raws li kev sib sib zog nqus ultraviolet LEDs ntawm lub zog compressive kev ntxhov siab AlN / sapphire template substrates, nrog rau kev tshawb fawb txog kev ua haujlwm ntawm cov cuab yeej siv tshuaj tua kab mob tib neeg ua pa RNA.
Nws tau pom tias los ntawm kev ntxig cov qauv superlattice nruab nrab ntawm qhov muaj zog compressive kev nyuaj siab AlN / sapphire substrate thiab AlGaN epitaxial txheej, lub zog compressive kev nyuaj siab ntawm substrate nyob rau hauv epitaxial txheej yuav ua tau zoo alleviated, thiab dislocation ceev ntawm AlGaN epitaxial txheej yog txo los ntawm ntau tshaj li qhov kev txiav txim ntawm qhov loj me piv nrog rau txoj kev ncaj qha epitaxial, thiab qhov chaw muaj atomic-theem flattening, uas tuaj yeem txhim kho qhov zoo ntawm qhov sib txuas ntawm epitaxial LED.
Raws li txoj kev no, pab pawg tshawb fawb tau tsim AlGaN-raws li sib sib zog nqus ultraviolet LEDs nrog qhov sib txawv ncov wavelengths ntawm 256 nm, 265 nm, thiab 278 nm, sib xws rau optical powers ntawm 6.8 mW, 9.6 mW, thiab 12.5 mW ntawm 100 mA.
Nyob rau tib lub sijhawm, pab pawg tshawb fawb tau tshawb fawb txog kev ua kom huv ntawm qhov sib txawv ntawm cov wavelengths ntawm tib neeg ua pa RNA viruses SARS-CoV-2, IAV thiab human parainfluenza virus (HPIV) ntawm tib lub zog optical density (0. 8 mW/cm2. Cov txiaj ntsig tau pom tias tag nrho cov wavelength LEDs sanitize 100% SARS-CoV-2 thiab IAV hauv 60 vib nas this ntawm tus kab mob concentration ntawm 3.8 × 105 PFU/mL. Ntawm lawv, 256 nm-LEDs tuaj yeem ntxuav 100% SARS-CoV-2 thiab IAV hauv 10 vib nas this, qhia kev ua kom huv huv ntau dua li cov LEDs ntev.
Tsis tas li ntawd, ntawm cov kab mob ntau dua thiab cov kab mob sib txawv ntawm qhov chaw sib txuas, 256 nm-LEDs kuj tau pom muaj txiaj ntsig zoo rau kev ua kom huv. Cov txiaj ntsig no yuav pab sib sib zog nqus UV LEDs los tua cov kab mob hauv kev nqa tau yooj yim dua, ib puag ncig tus phooj ywg, dav-spectrum, thiab muaj txiaj ntsig zoo.
Fig.1 Ua haujlwm wavelength thiab qauv ntawm AlGaN-raws li sib sib zog nqus ultraviolet LED thiab nws daim ntawv thov nyob rau hauv lub tshav pob ntawm sanitizing
Kev ua haujlwm yog ua raws lub ntsiab lus "Kev ua haujlwm sai ntawm tib neeg ua pa RNA cov kab mob los ntawm kev sib sib zog nqus ultraviolet irradiation los ntawm lub teeb-emitting diodes ntawm qhov kub-kub-annealed AlN / Sapphire template" Lub npe no tau luam tawm hauv Opto-Electronic Advances, Issue 9, 2023 .
