Cov yam ntxwv ntawm Scanning Probe Microscopes
Scanning probe microscope yog ib lo lus dav dav rau ntau yam tshiab sojntsuam microscopes (atomic force microscope, electrostatic force microscope, magnetic force microscope, scanning ion conductivity microscope, scanning electrochemical microscope, etc.) tsim los ntawm scanning tunneling microscope. Nws yog cov cuab yeej tshuaj ntsuam xyuas saum npoo tsim thoob ntiaj teb hauv xyoo tas los no.
Scanning probe microscope yog hom thib peb ntawm microscope uas soj ntsuam cov khoom siv ntawm lub atomic scale, tom qab teb ion microscopy thiab siab - daws teeb meem kis tau tus mob electron microscopy. Ua piv txwv scanning tunneling microscope (STM) ua piv txwv, nws qhov kev daws teeb meem sab nraud yog 0.1 ~ 0.2nm, thiab nws qhov kev daws teeb meem ntev yog 0.01nm. Cov kev daws teeb meem zoo li no tuaj yeem pom meej cov atoms lossis molecules faib rau saum npoo ntawm cov qauv. Meanwhile, scanning probe microscopes kuj tseem siv tau rau kev soj ntsuam thiab kev tshawb fawb hauv huab cua, lwm yam roj av, lossis dej ib puag ncig.
Scanning probe microscopes muaj cov yam ntxwv xws li atomic daws teeb meem, atomic thauj, thiab nano microfabrication. Txawm li cas los xij, vim muaj cov qauv kev ua haujlwm sib txawv ntawm ntau lub tshuab kuaj kab mob, cov ntaub ntawv saum npoo ntawm cov qauv cuam tshuam los ntawm lawv cov txiaj ntsig sib txawv heev. Lub tshuab ntsuas tunneling tshuab ntsuas ntsuas cov ntaub ntawv xa hluav taws xob rau ntawm qhov chaw ntawm tus qauv, nrog rau qib atomic daws teeb meem tab sis tseem tsis tuaj yeem tau txais qhov tseeb qauv ntawm cov qauv. Atomic microscopy kuaj pom cov ntaub ntawv sib cuam tshuam ntawm cov atoms, yog li tau txais cov ntaub ntawv kev npaj ntawm atomic faib rau saum npoo ntawm cov qauv, uas yog qhov tseeb qauv ntawm cov qauv. Ntawm qhov tod tes, atomic force microscopy tsis tuaj yeem ntsuas cov ntaub ntawv hluav taws xob hauv xeev uas tuaj yeem sib piv nrog txoj kev xav, yog li ob leeg muaj lawv tus kheej lub zog thiab qhov tsis muaj zog.
