Cov kab mob puas tuaj yeem soj ntsuam cov qauv molecular?
Cov molecules puas tuaj yeem pom nyob rau hauv lub tshuab tsom iav qhov muag?
Cov dej molecules puas tuaj yeem pom nrog lub tshuab ntsuas qhov muag?
Lub microscope puas tuaj yeem pom cov protein molecules?
Nws yog lub tshuab ntsuas hluav taws xob uas tuaj yeem soj ntsuam cov qauv molecular, thiab tam sim no qhov kev nthuav dav ntawm electron microscope tuaj yeem ncav cuag 15 lab lub sijhawm.
Nyob rau xyoo 1970s, kis tau tus mob electron microscope yog ib qho ntawm cov koob yees duab nrov tshaj tam sim no. 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 kev txhim kho electron microscope.
Xyoo 1931, ib tus kws tshawb fawb German tau hloov kho lub siab-voltage oscilloscope nrog kev sib xyaw ua ke ntawm cov kab mob khaub thuas-cathode tawm hluav taws xob thiab peb lub tshuab hluav taws xob. Tom qab kev hloov kho, nws pom tias oscilloscope tuaj yeem ua kom pom cov khoom ntau zaus. Nyob rau hauv no txoj kev, nws invented lub foundations electron microscope, thiab invention ntawm lub high-voltage oscilloscope kuj tau lees paub rau lub ntiaj teb no lub magnifying muaj nuj nqi ntawm lub electron microscope.
Thaum pib ntawm lub xyoo pua 20th, cov kws tshawb fawb Asmeskas tau ua cov kev hloov tshiab hauv kev kawm txog kev daws teeb meem ntawm electron microscopes, uas sai sai mus txog qib niaj hnub. Lub sijhawm no, electron microscopes kuj tsim los ntawm leaps thiab ciam teb hauv Suav teb.
Tam sim no qhov kev nthuav dav ntawm electron microscopes tuaj yeem ncav cuag 15 lab lub sijhawm, thaum qhov kev nthuav dav ntawm optical microscopes tsuas yog 2000 zaug, uas kuj yog qhov sib txawv ntawm electron microscopes thiab optical microscopes, yog li peb tuaj yeem saib ncaj qha atoms hauv cov hlau los ntawm electron microscopes mob thiab kev txiav txim. kev npaj ntawm atoms hauv semiconductors.
Lub zog daws teeb meem ntawm electron microscopes tseem nyob deb tshaj li ntawm optical microscopes. Qhov siab tshaj plaws magnification ntawm optical microscope yog kwv yees li 2000 zaug, thaum lub siab tshaj plaws magnification ntawm ib tug 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 lattice nyob rau hauv lub siv lead ua tuaj yeem pom ncaj qha los ntawm cov electron microscope (nco ntsoov tias tsuas pom qhov kev teeb tsa tsis tuaj yeem pom cov qauv atomic thiab qib molecular electron microscope tsis tuaj yeem pom. Dab tsi tuaj yeem pom hauv qab lub tshuab tsom iav yog cov qauv siv lead ua ntawm cov qauv sib txawv)
Lub tshuab microscopes tam sim no yeej tsis tuaj yeem pom cov molecules, tsis yog vim qhov kev nthuav dav tsis txaus, tab sis vim tias qhov kev daws teeb meem ntawm lub tshuab ntsuas qhov muag tsis txaus. Tam sim no qhov kev daws teeb meem siab STORM 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 duab hauv qab 20nm pom yog ib pawg.
Molecules yog qhov tsawg kawg nkaus nano-scale. 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 nano-scale. Tib lub sijhawm, kuv xav qhia rau koj tias qhov kev daws teeb meem tseem ceeb heev. , yog tias qhov kev daws teeb meem tsis tuaj yeem ua tiav, qhov magnification tsis muaj txiaj ntsig ntawm qhov siab.
