Dab tsi yog qhov zoo thiab qhov tsis zoo ntawm electron microscope?
Qhov zoo:
1. Kev daws teeb meem siab. Qhov kev daws teeb meem ntawm lub tshuab tsom iav kho qhov muag yog 0.2μm, thiab cov khoom siv hluav taws xob xa hluav taws xob yog 0.2nm, uas txhais tau hais tias lub tshuab hluav taws xob xa hluav taws xob tau nthuav dav 1000 npaug ntawm lub hauv paus ntawm lub tshuab tsom iav optical.
2. Kev xa hluav taws xob tshuab hluav taws xob feem ntau yog siv los soj ntsuam cov khoom siv zoo uas tsis tuaj yeem ua qhov txawv ntawm lub tshuab tsom iav zoo tib yam; Scanning electron microscope (SEM) feem ntau yog siv los soj ntsuam cov morphology ntawm cov khoom nto, thiab tuaj yeem ua ke nrog X-ray diffractometer lossis electron zog spectrometer los tsim electron microprobe rau cov khoom siv tshuaj ntsuam xyuas. Kawm txog tus kheej-emitting electron nto los ntawm emission electron microscope.
Qhov tsis zoo:
1. Hauv lub tshuab ntsuas hluav taws xob, cov qauv yuav tsum tau soj ntsuam hauv lub tshuab nqus tsev, yog li nws tsis tuaj yeem soj ntsuam cov qauv nyob. Nrog rau kev txhim kho thev naus laus zis, ib puag ncig scanning electron microscope yuav maj mam paub qhov kev soj ntsuam ncaj qha ntawm cov qauv nyob;
2. Thaum cov qauv ua tiav, cov qauv uas cov qauv tsis muaj yuav raug tsim tawm, uas ua rau qhov nyuaj ntawm kev txheeb xyuas cov duab tom qab;
3. Vim tias muaj zog electron scattering peev xwm, theem nrab diffraction yog ib qho yooj yim 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. Vim hais tias qhov kis tau tus mob electron microscope tsuas tuaj yeem soj ntsuam cov qauv nyias nyias, nws muaj peev xwm hais tias cov qauv ntawm cov khoom sib txawv ntawm cov qauv hauv cov khoom;
6, cov qauv ultra-nyias (hauv qab 100 nanometers), cov txheej txheem kev npaj ua qauv yog qhov nyuaj thiab nyuaj, thiab cov qauv kev npaj tau puas lawm;
7. Cov kab hluav taws xob tuaj yeem ua rau cov qauv ua kom puas los ntawm kev sib tsoo thiab cua sov;
8. Tsis tas li ntawd, tus nqi ntawm kev yuav khoom thiab kev tswj xyuas lub tshuab ntsuas hluav taws xob yog qhov siab.
