Hom thiab cov yam ntxwv ntawm scanning Electron tsom iav
Muaj ntau hom scanning electron tsom iav tsom iav, thiab ntau hom scanning Electron tsom iav muaj qhov sib txawv. Raws li hom phom electron, nws tuaj yeem muab faib ua peb hom: teb emission Electer roj phom, thiab lanthhanum hexaboride. Ntawm lawv, teb emission scanning Electron metermanopy tuaj yeem faib ua lub tshuab tawg paj Cong teb emission scanning Electron metcopy yuav tsum muaj lub tshuab nqus dej siab, thiab yuav tsum muaj kev soj ntsuam ib leeg thiab muaj ib qho kev thov tsawg; Lub thermal teb emission scanning Electron tsom iav tsom tsis tsuas yog muaj lub sijhawm ntev ua haujlwm, tab sis kuj tseem tuaj yeem ua ke nrog ntau yam khoom siv kom ua tiav kev tsom xam. Hauv thaj teb ntawm geology, peb tsis tsuas yog xav tau saib xyuas cov morpleology ntawm cov qauv, yog li yuav tsum tau txheeb xyuas cov duab thermal emission scanning Electron metensive.
Txawm hais tias scanning Electron microscopy yog ib tug neeg tshiab hauv tsev neeg lub tshuab tsom kwm, nws txoj kev nthuav dav nrawm yog qhov nrawm nrawm rau nws cov txiaj ntsig ntau.
Qhov ntsuas muaj kev daws teeb meem siab thiab tuaj yeem saib cov ntsiab lus ntawm txog 6nm ntawm cov qauv ntawm cov qauv los ntawm kev ntsuas theem nrab ntawm theem nrab. Los ntawm kev siv rab phom 6 hluav taws xob hluav taws xob, nws tuaj yeem txhim kho ntxiv rau 3NM.
Qhov ntsuas muaj ntau yam ntawm kev hloov loj thiab tuaj yeem hloov kho tsis tu ncua. Yog li ntawd, ntau qhov sib txawv ntawm cov teb ntawm cov teb pom tuaj yeem xaiv tau rau kev soj ntsuam uas xav tau, thiab cov duab ntshiab uas muaj kev pom zoo nrog lub tshuab hluav taws xob tseem ceeb tuaj yeem tau txais ntawm kev magnification siab.
Qhov tob ntawm daim teb thiab teb pom ntawm cov qauv yog loj, thiab cov duab yog nplua nuj nyob rau hauv peb-sabression Sense. Nws tuaj yeem pom cov nplaim thaiv ncaj qha nrog cov qauv loj thiab tsis sib xws ntawm cov qauv ntawm cov qauv, muab tib neeg kev nkag siab ntawm lub ntiaj teb me me.
Kev npaj ntawm 4 qhov qauv yog yooj yim. Ntev npaum li lub block lossis hmoov qauv yog kho me ntsis los yog tsis kho, lawv tuaj yeem pom ncaj qha rau hauv lub xov tooj cua tshuab hluav taws xob, uas los ze zog rau lub xeev ntuj ntawm cov khoom.
5. Cov duab zoo tuaj yeem tswj tau zoo thiab txhim kho cov qauv hauv tshuab hluav taws xob, lossis txhim kho cov duab hloov pauv ntawm, thiab kev tsaus ntuj nti thiab tsaus ntuj hauv ntau qhov ntawm cov duab. Los ntawm kev siv cov khoom siv dual magnification lossis cov duab xaiv, cov duab nrog cov khoom sib txawv tuaj yeem pom ib txhij ntawm cov vijtsam fluorescent.
6 tuaj yeem raug rau kev tsom xam. Nruab ib lub nthwv dej dispersive x-ray spectrometer (wdx) lossis siv hluav taws xob xoo hluav taws xob, cov tshuab hluav taws xob, txuas ntxiv rau cov qauv hluav taws xob, thiab lwm yam. Nthuav cov ntawv thov ntawm scanning Electron me me rau ntau yam me me thiab micro cheeb tsam tsom xam cov qauv ntawm scanning electron me me. Tsis tas li ntawd, nws tseem tuaj yeem txheeb xyuas cov tshuaj xaiv ib qho ntawm cov qauv thaum soj ntsuam cov duab morphology; Los ntawm kev txhim kho lub semiconductor Qhov qauv txuas, PN junctions thiab micro qhov tsis xws luag tuaj yeem pom ncaj qha rau kev quab yuam pom ncaj qha. Vim kev siv ntawm tshuab hluav taws xob siv tshuab hluav taws xob tsis siv neeg thiab kev tswj hwm hluav taws xob rau ntau qhov scanning Electron prefres tau zoo tshaj plaws kev txhim kho.
