Electron microscopy yog txheej txheej ntawm electron sojntsuam txoj hauv kev uas tso cai rau kev kawm microstructure ntawm cov khib nyiab, nrog rau lawv cov khoom hauv zos thiab microfield.
Nrog rau txoj kev tshawb fawb no, cov cuab yeej tshwj xeeb tau siv - lub tshuab tsom iav, uas cov duab nthuav dav vim muaj cov kab hluav taws xob.
Electron microscopy muaj ob qhov chaw tseem ceeb:
• Kev kis tau tus mob - nqa tawm nrog kev pab los ntawm transmissive electron microscopes, nyob rau hauv uas cov khoom yog illuminated los ntawm ib tug electron beam nrog lub zog ntawm 50 mus rau 200 keV. Cov khoom siv hluav taws xob uas dhau los ntawm cov khoom hauv qab kev kawm poob rau ntawm cov tsom iav tshwj xeeb. Cov lo ntsiab muag no tsim cov duab ntawm tag nrho cov txheej txheem sab hauv ntawm cov khoom ntawm ib qho screen tshwj xeeb lossis zaj duab xis. Nws yuav tsum tau hais tias kis tau tus mob electron microscopy ua rau nws muaj peev xwm kom tau ib tug nce ntawm yuav luag 1.5106 lub sij hawm. Nws ua rau nws muaj peev xwm txiav txim siab cov qauv siv lead ua ntawm cov khoom, yog li nws yog qhov tseem ceeb rau kev kawm cov txheej txheem ultrafine ntawm ntau yam khib nyiab.
• scanning(scanning) electron microscopy - yog nqa tawm los ntawm kev siv lub tshuab tsom iav tshwj xeeb, nyob rau hauv uas lub teeb hluav taws xob tau sau rau hauv ib qho kev sojntsuam nyias uas siv lo ntsiab muag sib nqus. Nws scans lub nto ntawm cov khoom nyob rau hauv kev kawm, thiab nyob rau hauv cov ntaub ntawv no, theem nrab hluav taws xob tshwm sim, uas yog kaw los ntawm ntau yam detectors thiab hloov dua siab tshiab rau hauv cov coj video signals.
Nws tsim nyog sau cia tias electron microscopy muaj ntau qhov zoo dua li cov txheej txheem ntawm X-ray spectral microanalysis. Tias yog vim li cas nws thiaj li nthuav dav thiab tuaj yeem hu ua qhov kev ua tiav tseem ceeb ntawm nanotechnology niaj hnub no.
Tsis tas li ntawd, electron microscopy ua rau muaj kev loj hlob ntawm lub computer morphometry, qhov tseem ceeb ntawm kev siv tshuab computer kom paub meej thiab ua tiav ntawm cov duab hluav taws xob.
Hnub no, kho vajtse-software systems tau tsim los uas muaj peev xwm khaws cov duab tau thiab ua tiav lawv cov kev txheeb cais, kho lawv qhov sib txawv thiab ci ntsa iab, thiab qhia txog cov ntsiab lus ntawm cov microstructures hauv kev kawm.
Niaj hnub nimno electron microscopes tau nruab nrog cov txheej txheem tshwj xeeb uas txo qhov yuav ua rau muaj kev puas tsuaj rau cov qauv ntawm cov khoom nyob rau hauv kev kawm, nrog rau kev ua kom muaj kev ntseeg siab ntawm cov ntaub ntawv ntsig txog kev tsom xam ntawm microstructure ntawm cov khoom, uas txhawb kev ua haujlwm zoo. ntawm cov kws tshawb fawb.
Qhov kev ua tiav ntawm electron microanalysis tau nquag siv los nkag siab txog kev sib cuam tshuam atomic, uas tso cai rau koj los tsim cov khoom siv nrogcov khoom tshiab, thiab kev ua qauv 3D qib siab tso cai rau cov kws tshawb fawb biologist tshawb nrhiav cov txheej txheem tseem ceeb molecular uas cuam tshuam tag nrho cov txheej txheem lom neeg. Tsis tas li ntawd, ua tsaug rau kev siv hluav taws xob microscopy, nws muaj peev xwm ua tau ntau qhov kev sim dynamic thiab tau txais lub hauv paus tsim nyog los tsim cov nanostructures tshiab.
