Dab tsi yog cov txiaj ntsig thiab qhov tsis zoo ntawm kev siv lub tshuab ntsuas hluav taws xob?
qhov zoo:
1. Kev daws teeb meem siab, qhov kev daws teeb meem ntawm lub tshuab hluav taws xob kho qhov muag yog 0.2μm, thiab qhov kev daws teeb meem ntawm kev sib kis hluav taws xob hluav taws xob yog 0.2nm, uas yog hais tias, kev xa hluav taws xob hluav taws xob microscope yog magnified los ntawm 1000 lub sij hawm ntawm lub hauv paus ntawm optical microscope.
2. Kev xa cov tshuab hluav taws xob siv hluav taws xob feem ntau siv los soj ntsuam cov khoom siv zoo uas tsis tuaj yeem daws tau los ntawm cov tshuab microscopes; scanning electron microscopes feem ntau yog siv los soj ntsuam cov morphology ntawm cov khoom nto, thiab tuaj yeem ua ke nrog X-ray diffractometers lossis electron zog spectrometers. Tsim cov khoom siv hluav taws xob microprobes rau kev txheeb xyuas cov khoom muaj pes tsawg leeg; emission electron microscopes 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 microscope yuav maj mam paub qhov kev soj ntsuam ncaj qha ntawm cov qauv nyob;
2. Thaum ua cov qauv, nws yuav ua tau ib tug qauv uas tus qauv tsis muaj, uas exacerbates qhov nyuaj ntawm kev soj ntsuam cov duab tom qab;
3. Vim 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. Txij li thaum 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 siv txawv ntawm cov qauv hauv cov khoom;
6. Rau cov qauv ultra-nyias (tsawg dua 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 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.
