Lub tshuab ntsuas qhov muag puas tuaj yeem pom cov qauv molecular?
Puas tuaj yeem pom cov molecules hauv qab lub teeb pom kev zoo?
Puas tuaj yeem pom cov dej molecules nrog lub teeb pom kev zoo?
Lub microscope puas pom cov protein molecules?
Nws yog lub tshuab ntsuas hluav taws xob uas tuaj yeem soj ntsuam cov qauv molecular, thiab qhov loj ntawm electron microscope tuaj yeem ncav cuag 15 lab lub sijhawm.
Nyob rau xyoo 1970s, kis tau tus mob electron microscope yog hom kab mob uas nrov dua. Nws qhov kev daws teeb meem yog li ntawm 0.3 nanometers, thaum tib neeg kev daws teeb meem yog li 0.1 millimeters. Qhov ntawd yog thawj lub xeev ntawm txoj kev loj hlob ntawm electron microscope.
Xyoo 1931, tus kws tshawb fawb German tau hloov kho lub tshuab hluav taws xob siab oscilloscope nrog lub tshuab txias cathode tawm hluav taws xob thiab peb lub tshuab hluav taws xob. Tom qab kev hloov kho, nws pom tias oscilloscope tuaj yeem nthuav qhov khoom ntau zaus. Nyob rau hauv no txoj kev, nws invented lub kis tau tus mob electron microscope, thiab lub invention ntawm lub high-voltage oscilloscope kuj ua pov thawj lub magnification muaj nuj nqi ntawm lub electron microscope rau lub ntiaj teb no.
Thaum pib ntawm lub xyoo pua 20th, cov kws tshawb fawb hauv Teb Chaws Asmeskas tau ua cov kev hloov tshiab hauv kev tshawb fawb txog kev daws teeb meem ntawm electron microscope, thiab sai sai mus txog qib niaj hnub. Lub sijhawm no, hauv Suav teb, lub tshuab hluav taws xob hluav taws xob kuj tsim los ntawm leaps thiab ciam teb.
Tam sim no qhov kev nthuav dav ntawm lub tshuab ntsuas hluav taws xob tuaj yeem ncav cuag 15 lab lub sijhawm, thaum qhov kev nthuav dav ntawm lub tshuab ntsuas qhov muag tsuas yog 2000 zaug. Qhov no kuj yog qhov sib txawv ntawm electron microscope thiab optical microscope, yog li peb tuaj yeem saib ncaj qha rau cov atoms hauv cov hlau los ntawm electron microscope tej yam kev mob thiab kev npaj ntawm atoms hauv semiconductors.
Lub zog daws teeb meem ntawm lub tshuab hluav taws xob hluav taws xob tseem nyob deb tshaj li ntawm lub teeb tsom iav. Qhov siab tshaj plaws magnification ntawm optical microscope yog hais txog 2000 lub sij hawm, thaum lub siab tshaj plaws magnification ntawm lub niaj hnub electron microscope yog ntau tshaj 3 lab lub sij hawm, yog li cov atoms ntawm ib co hnyav hlau thiab cov txheej txheem zoo atomic lattices nyob rau hauv lub siv lead ua tuaj yeem pom ncaj qha los ntawm cov electron microscope (nco ntsoov tias tsuas yog koj tsis tuaj yeem pom cov qauv atomic thaum koj pom qhov kev teeb tsa, thiab koj tsis tuaj yeem pom nws nrog lub tshuab ntsuas hluav taws xob ntawm qib molecular. Qhov koj tuaj yeem pom hauv qab lub tshuab ntsuas yog cov qauv siv lead ua ntawm molecules nrog. txawv configurations)
Cov tshuab microscopes tam sim no tsis tuaj yeem pom cov molecules kom meej meej, tsis yog vim qhov kev nthuav dav tsis txaus, tab sis vim tias qhov kev daws teeb meem ntawm optical microscopes tsis tuaj yeem ncav cuag nws. Qhov kev daws teeb meem siab STORM tam sim no yog kwv yees li 20nm, uas txhais tau hais tias ob lub ntsiab lus sib cais los ntawm ntau tshaj 20nm tuaj yeem pom tau meej, thiab cov hauv qab 20nm tuaj yeem pom raws li qhov loj.
Molecules yog qhov pib tsawg kawg ntawm qib nanometer. Yog tias koj siv lub tshuab ntsuas hluav taws xob, nws nyuaj rau hais. Qhov loj ntawm lub tshuab ntsuas hluav taws xob tuaj yeem ncav cuag 10, 000 zaug, thiab qhov kev daws teeb meem ntawm lub tshuab ntsuas hluav taws xob yog nyob rau theem nanometer. Tib lub sijhawm, kuv xav qhia rau koj tias qhov kev daws teeb meem tseem ceeb heev. , yog hais tias qhov kev daws teeb meem tsis mus txog, qhov magnification yog tsis muaj txiaj ntsig ntawm qhov siab.
