Yog tias koj tab tom nrhiav qee qhov UV-Lub teeb dub, koj tuaj yeem hla ob qhov tshwj xeeb -365nm lossis 395nm. Qhov ntawd txhais li cas, thiab qhov twg yog qhov zoo tshaj? Nyeem rau kom paub ntxiv!
Rov qab mus rau Cov Ntsiab Lus: Wavelength thiab Lub Teeb
Nws yog ib qho tseem ceeb kom nkag siab txog cov ntsiab lus ntawm wavelength thiab lub teeb ua ntej peb hais seb 365 nm lossis 395 nm yog qhov zoo dua rau koj daim ntawv thov.
Peb pom cov teeb pom kev sib txawv raws li cov xim sib txawv, raws li koj yuav nco qab. Piv txwv li, lub teeb nrog lub wavelength ntawm 450 nm yog muaj koob muaj npe xiav, tab sis lub teeb nrog lub wavelength ntawm 630 nm yog xim liab. Lub teeb pom kev muaj lub wavelength ntawm 400 thiab 800 nm, tab sis lub teeb ultraviolet, uas tsis pom, muaj lub wavelength qis dua 400 nm.
Tus nqi wavelength tseem ceeb heev txawm tias photons nrog wavelengths luv dua 400 nm tsis pom ntawm tib neeg lub qhov muag. Piv txwv li, UV nrog lub wavelength ntawm 365 nm yog cais raws li "UV-A," tab sis UV nrog lub wavelength ntawm 290 nm yog cais raws li "UV-B." Hom UV yog txiav txim los ntawm nws lub wavelength, uas yog ib qho tseem ceeb sib txawv ntawm UV pawg nyob rau hauv cov nqe lus ntawm kev siv thiab txawm yuav tsum tau xav txog kev nyab xeeb.
Yog li, koj yuav tsum paub tias 395 nm yog nyob ib ncig ntawm 30 nm ze rau pom lub teeb (violet) tshaj 365 nm. Hais txawv, 365 nm yog "qhov tob" rau hauv UV spectrum tshaj 395 nm.
Kev siv ntawm UV-A ntawm 365 thiab 395 nm
Lub UV-Ib wavelength range muaj xws li 365 nm thiab 395 nm variants. Feem ntau,UV-A teebmuaj txiaj ntsig zoo rau kev kho cov xim thiab cov polymers, nrog rau kev tsim thiab saib cov teebmeem fluorescence. Piv rau qhov muaj zog dua UV-B thiab UV-C rays, UV-Ib wavelengths muaj kev nyab xeeb dua.
Yog li dab tsi yuav yog qhov txawv ntawm 30 nm?
Thawj qhov txawv yog tias piv rau 365 nm LED, 395 nm LED tsim teeb pom kev zoo dua. Whereas lub 365 nm LED ua rau ib tug drab, bluish -dawb lub teeb (vim lub teeb seem ntawm lub zog uas "tails" tawm mus rau hauv lub pom spectrum), lub 395 nm LED ua ib tug pom violet xim. Ob yam no feem ntau yuav tsim "blacklight" lossis curative teebmeem thiab tawm hauv UV-A wavelength range.
Dab tsi ua rau qhov sib txawv ntawm qhov pom ntawm qhov pom? Daim duab spectrum tso zis ntawm 395 nm (dav dotted kab) thiab 365 nm (kab dotted kab) LEDs tau pom nyob rau hauv daim duab saum toj no. Ob leeg 365 nm thiab 395 nm LEDs tawm thoob plaws ntau lub wavelengths, ob qho tib si saum toj thiab hauv qab lawv cov wavelengths, raws li koj yuav pom. Muab qhov sib txawv, 395 nm LEDs tsis tsuas yog tawm lub teeb ntawm lub wavelength xwb.
Raws li lub ntsiab lus ntawm lub ncov wavelength, lub 395 nm LED emits feem ntau ntawm 395 nm, tab sis nws kuj tsim ib tug loj npaum li cas ntawm lub teeb ntawm 400 nm thiab txawm 410 nm. Cov wavelengths khov kho yog nyob rau hauv violet, pom thaj tsam ntawm spectrum.
Tau kawg, 395 nm LED kuj tsim lub teeb ntawm wavelengths luv dua 395 nm, thiab lub teeb lub zog ntawm cov wavelengths no muaj txiaj ntsig zoo hauv kev ua rau UV-Ib qho kev cuam tshuam lossis cov teebmeem fluorescence. Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qhov loj npaum li cas ntawm lub teeb lub zog tau raug tso tawm hauv thaj chaw pom, violet, raws li daim duab qhia.
Ntawm qhov tod tes, koj yuav pom tias yuav luag tag nrho lub teeb lub zog hauv 365 nm spectral tso zis poob rau hauv qhov tsis pom UV-Ib qho, nrog lub zog emission poob ua ntej nws mus txog 400 nm. Qhov no yog qhov zoo tagnrho rau feem ntau ntawm UV-Ib daim ntawv thov vim nws yuav ua kom zoo dua qhov UV-Ib lub zog txheeb ze rau lub teeb pom kev zoo.
Txawm li cas los xij, tej zaum koj yuav pom qhov tsis zoo, xiav -xim dawb tawm thaum lub teeb pom kev 365 nm LED. Qhov no yog coj los ntawm "kua" ntawm lub teeb pom kev, uas yog lub emission ntawm me me tab sis pom tau hais tias pom lub zog ntawm lub zog, lossis lub teeb dawb. Txawm hais tias lub teeb pom kev zoo yog qhov me me uas nws zoo li "0" hauv cov kab kos duab, nws tuaj yeem kuaj pom hauv qee yam kev siv, xws li UV yees duab, thiab tuaj yeem ua rau muaj kev ntxhov siab. Lwm txoj hauv kev pom lub teeb pom kev tuaj yeem xav tau hauv cov xwm txheej no.
365nm rau Strongest Fluorescence
Cov ntaub ntawv nqus spectrum qhia tau hais tias ntau yam khoom ci ntsa iab tshaj plaws ntawm 365 nm, ntxiv rau qhov tseeb tias365nm UV teebmuaj txiaj ntsig tsis tsim lub teeb violet.
Yog li ntawd, cov ntawv thov uas xav tau cov teebmeem fluorescence muaj zog tuaj yeem tau txais txiaj ntsig ntau dua los ntawm 365 nm lub teeb. Thaum ua ke nrog cov txiaj ntsig ntawm emitting tsis pom violet lub teeb, 365 nm lub teeb yuav raug suav tias yog qhov kev xaiv zoo tshaj plaws thaum kev ua haujlwm tseem ceeb.
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