Cov ntawv thov thiab cov yam ntxwv tseem ceeb ntawm Kev Sib Txuas Hluav Taws Xob Hluav Taws Xob
Transmission Electron Microscope (TEM) yog lub siab -kev daws teeb meem microscope siv los soj ntsuam cov qauv sab hauv ntawm tus qauv. Nws siv cov kab hluav taws xob los nkag mus rau cov qauv thiab tsim cov duab kos duab, uas yog tom qab ntawd txhais thiab txheeb xyuas kom pom qhov microstructure ntawm tus qauv.
1. Cov khoom siv hluav taws xob
TEM siv cov kab hluav taws xob siv hluav taws xob hloov cov kab teeb. Lub Talos series kis tau tus mob electron microscope nruab nyob rau hauv Jifeng Electronics MA Laboratory siv ultra- siab brightness electron phom, thaum lub spherical aberration kis electron microscope HF5000 siv txias teb electron phom.
2. Lub tshuab nqus tsev
Txhawm rau kom tsis txhob muaj kev cuam tshuam ntawm cov kab hluav taws xob thiab cov pa roj ua ntej dhau los ntawm cov qauv, tag nrho lub tshuab tsom iav yuav tsum tau khaws cia nyob rau hauv lub tshuab nqus tsev siab.
3. Cov qauv kis tau tus mob
Cov qauv yuav tsum yog pob tshab, txhais tau hais tias lub teeb hluav taws xob tuaj yeem nkag mus rau nws, cuam tshuam nrog nws, thiab tsim cov duab kos duab. Feem ntau, qhov tuab ntawm cov qauv yog li ntawm nanometers mus rau submicrons. Jifeng Electronics tau nruab nrog kaum ob ntawm Helios 5 series FIBs rau kev npaj siab -zoo ultra- nyias TEM cov qauv.
4. Hluav taws xob kis tau tus mob
Lub teeb hluav taws xob yog tsom los ntawm kev sib kis. Cov lo ntsiab muag no zoo ib yam li cov nyob rau hauv optical microscopes, tab sis vim yog luv luv wavelength ntawm electrons piv rau lub teeb nthwv dej, kev tsim thiab kev tsim khoom rau lo ntsiab muag yog siab dua.
5. Zoo li lub dav hlau
Tom qab dhau los ntawm cov qauv, lub teeb hluav taws xob nkag mus rau hauv ib lub dav hlau duab. Nyob rau ntawm lub dav hlau no, cov ntaub ntawv ntawm cov kab hluav taws xob hluav taws xob tau hloov mus rau hauv cov duab thiab ntes los ntawm tus ntes.
6. Ntes
Cov khoom siv ntau tshaj plaws yog cov tshuaj fluorescent, CCD (Chaw Coupled Device) koob yees duab, lossis CMOS (Complementary Metal Oxide Semiconductor) koob yees duab. Thaum lub teeb hluav taws xob cuam tshuam nrog lub vijtsam fluorescent ntawm daim duab dav hlau, pom lub teeb pom kev zoo, tsim cov duab kos duab ntawm cov qauv, uas feem ntau siv rau kev tshawb nrhiav cov qauv. Vim lub fact tias cov ntxaij vab tshaus fluorescent yuav tsum tau siv nyob rau hauv ib tug tsaus chav tsev ib puag ncig thiab tsis yog cov neeg siv - phooj ywg, manufacturers tam sim no nruab ib lub koob yees duab saum toj no lub fluorescent screen, tso cai rau TEM neeg ua hauj lwm saib cov zaub nyob rau hauv ib tug kaj ib puag ncig mus nrhiav cov qauv, qaij txoj siv axis, thiab ua lwm yam hauj lwm. Qhov kev txhim kho tsis meej no yog lub hauv paus rau kev ua tiav tib neeg- tshuab sib cais.
7. Ua ib daim duab
Thaum cov kab hluav taws xob hla dhau ntawm cov qauv, nws cuam tshuam nrog cov atoms thiab cov qauv siv lead ua hauv cov qauv, tawg thiab nqus. Raws li cov kev sib cuam tshuam no, kev siv hluav taws xob hluav taws xob yuav tsim ib daim duab ntawm lub dav hlau duab. Cov duab no yog tag nrho ob -dimensional projection dluab, tab sis cov qauv sab hauv ntawm tus qauv feem ntau yog peb-dimensional, yog li tshwj xeeb yuav tsum tau them rau qhov no thaum soj ntsuam cov ncauj lus kom ntxaws hauv cov qauv.
8. Kev tshuaj xyuas thiab kev piav qhia
Los ntawm kev soj ntsuam thiab txheeb xyuas cov duab, cov kws tshawb fawb tuaj yeem nkag siab txog cov ntaub ntawv microstructure ntawm cov qauv, xws li cov qauv siv lead ua, cov kab lattice tsis xws luag, crystal defects, atomic arrangement, thiab lwm yam. Jifeng muaj ib pab neeg ua haujlwm tshawb xyuas cov khoom siv uas tuaj yeem muab cov neeg siv khoom nrog tag nrho cov txheej txheem tsom xam cov kev daws teeb meem thiab cov ntaub ntawv tshaj tawm kev tshaj lij.
