Video: Dab tsi yog qhov lo ntsiab muag hauv lub tshuab ntsuas hluav taws xob ua los ntawm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
iav lo ntsiab muag tau kawg, yuav impede electrons , yog li ntawd electron microscope (EM) lo ntsiab muag yog electromagnetic converging lo ntsiab muag . Lub qhov txhab kaw ntom nti ntawm tooj liab hlau ua rau cov hlau nplaum sib nqus uas yog qhov tseem ceeb ntawm qhov lens.
Tom qab ntawd, lub lens twg yog siv hauv electron microscope?
Hluav taws xob thiab ion microscopes siv cov kab hluav taws xob ntawm cov khoom siv hluav taws xob hloov hluav taws xob, thiab siv hluav taws xob los yog electrostatic lo ntsiab muag tsom rau cov khoom. Lawv tuaj yeem pom cov yam ntxwv me me li ib feem kaum ntawm ib nanometer (ib kaum billionth ntawm ib lub 'meter'), suav nrog ib tus neeg atoms.
Ib sab saum toj no, hom duab dab tsi uas kis tau tus mob electron microscope tsim? A Transmission Electron Microscope tsim ib tug high-resolution, dub thiab dawb duab los ntawm kev sib cuam tshuam uas tshwm sim ntawm cov qauv npaj thiab muaj zog electrons nyob rau hauv lub tshuab nqus tsev chamber. Cua yuav tsum tau muab tso rau ntawm lub tshuab nqus tsev chamber, tsim kom muaj qhov chaw nyob qhov twg electrons muaj peev xwm txav tau.
Qhov thib ob, lub zog ntawm lub tshuab hluav taws xob yog dab tsi?
Ib tug loj txawv feature ntawm txhua tus microscope yog cov lub zog . Hauv ib electron microscope , electrons yog emitted los ntawm ib hluav taws xob phom, thaum nyob hauv lub teeb microscope tus zog yog tsim los ntawm lub teeb. Lwm qhov sib txawv tseem ceeb ntawm ob microscopes yog qhov muaj pes tsawg leeg ntawm lub lens.
Dab tsi ntawm electron microscope tsim ib daim duab peb sab?
Scanning electron microscope
Pom zoo:
Lub ntsiab txhais ntawm lo lus hluav taws xob hluav taws xob yog dab tsi?
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