Dab tsi yog qhov zoo thiab qhov tsis zoo ntawm electron microscopes
qhov zoo:
1. Kev daws teeb meem siab. Qhov kev daws teeb meem ntawm lub tshuab tsom iav qhov muag yog 0.2μm, thiab qhov kev daws teeb meem ntawm lub tshuab hluav taws xob xa hluav taws xob yog 0.2nm. Uas yog hais, qhov kis tau tus mob electron microscope yog magnified 1000 zaug raws li lub optical microscope.
2. Kev xa cov tshuab hluav taws xob siv hluav taws xob feem ntau siv los soj ntsuam cov khoom siv hauv feeb uas tsis tuaj yeem paub qhov txawv ntawm cov tshuab microscopes; scanning electron microscopes yog siv los soj ntsuam cov morphology ntawm cov khoom nto, thiab tuaj yeem ua ke nrog X-ray diffractometers lossis electron zog spectrometers. Nws yog ib qho electron microprobe rau kev txheeb xyuas cov khoom muaj pes tsawg leeg; ib qho emission electron microscope yog siv rau kev kawm ntawm tus kheej-emitting electron nto.
tsis txaus:
1. Hauv lub tshuab ntsuas hluav taws xob, cov qauv yuav tsum tau soj ntsuam hauv lub tshuab nqus tsev, yog li tsis tuaj yeem soj ntsuam cov qauv nyob. Nrog rau kev nce qib ntawm thev naus laus zis, ib puag ncig scanning electron microscopy yuav maj mam ua kom pom ncaj qha ntawm cov qauv nyob;
2. Thaum ua cov qauv, cov qauv uas cov qauv tsis yog thawj zaug yuav raug tsim, uas ua rau nws nyuaj rau kev txheeb xyuas cov duab tom qab;
3. Vim muaj lub peev xwm tawg hluav taws xob muaj zog heev, qhov cuam tshuam thib ob yog qhov tshwm sim;
4. Vim tias nws yog ob-dimensional dav hlau projection duab ntawm ib qho khoom peb-dimensional, qee zaum cov duab tsis txawv;
5. Txij li thaum kis tau tus mob electron microscopes tsuas tuaj yeem soj ntsuam cov qauv nyias nyias, cov qauv ntawm cov khoom ntawm cov khoom yuav txawv ntawm cov qauv ntawm sab hauv ntawm cov khoom;
6. Rau cov qauv ultra-nyias (hauv qab 100 nanometers), cov txheej txheem kev npaj cov qauv yog nyuaj thiab nyuaj, thiab cov qauv kev npaj yuav puas;
7. Cov kab hluav taws xob tuaj yeem rhuav tshem cov qauv los ntawm kev sib tsoo thiab cua sov;
8. Tsis tas li ntawd, kev yuav khoom thiab kev saib xyuas tus nqi ntawm electron microscopes yog qhov siab.
