Puas tuaj yeem soj ntsuam cov qauv molecular nrog lub tshuab ntsuas qhov muag?
Cov qauv molecular tuaj yeem pom yog lub tshuab hluav taws xob hluav taws xob, tam sim no qhov kev nthuav dav ntawm electron microscope tuaj yeem ncav cuag 15 lab lub sijhawm.
Nyob rau hauv 1970s, kis tau tus mob electron microscope yog tam sim no nrov dua lub tshuab tsom iav, nws daws teeb meem ntawm 0.3 nanometers, thiab tib neeg muaj peev xwm paub qhov txawv yog li ntawm 0.1 millimeters, uas yog kev loj hlob ntawm electron microscope thaum pib ntawm lub xeev.
Los ntawm xyoo 1931, ib tug kws tshawb fawb German nrog kev hloov kho siab-voltage oscilloscope, nws yog ib qho txias cathode tawm electron qhov chaw thiab peb lub tshuab hluav taws xob ntawm lub lens ua ke ntawm kev hloov kho, kev hloov kho ntawm oscilloscope pom tias cov khoom tuaj yeem loj tuaj rau ob peb zaug, Yog li nws tau tsim lub foundations electron microscope, lub invention ntawm high-voltage oscilloscope kuj tau lees paub rau lub ntiaj teb no
magnification ntawm kev ua haujlwm ntawm electron microscope.
Txog rau thaum pib ntawm lub xyoo pua nees nkaum, Tebchaws Asmeskas cov kws tshawb fawb hauv kev daws teeb meem ntawm electron microscope ntawm kev tshawb fawb tau ua cov kev hloov tshiab, thiab tsis ntev mus txog qib niaj hnub no, lub sijhawm no hauv Suav teb, lub tshuab hluav taws xob hluav taws xob kuj tau ua tiav sai.
Tam sim no qhov loj ntawm electron microscope tuaj yeem ncav cuag 15 lab lub sijhawm, thaum qhov kev nthuav dav ntawm optical microscope tsuas yog 2, 000 zaug, uas kuj yog qhov txawv ntawm electron microscope thiab optical microscope, yog li peb tuaj yeem ncaj qha los ntawm electron microscope. kom muaj peev xwm soj ntsuam lub xeev ntawm cov atoms nyob rau hauv cov hlau thiab semiconductor atoms nyob rau hauv lub zoo zoo ntawm qhov teeb meem.
Lub zog daws teeb meem ntawm lub tshuab hluav taws xob hluav taws xob tseem nyob deb tshaj li ntawm qhov kho qhov muag microscope. Qhov loj magnification ntawm optical microscopes yog kwv yees li 2, 000 zaug, thaum niaj hnub electron microscopes muaj ib tug loj magnification ntawm ntau tshaj 3 lab lub sij hawm, thiaj li hais tias electron microscopes tau ncaj qha soj ntsuam cov atoms ntawm tej yam hnyav hlau thiab muaju nyob rau hauv zoo zoo. npaj atomic dot matrix (nco ntsoov tias koj tsuas tuaj yeem pom qhov kev teeb tsa ntawm txoj hauv kev kom pom cov qauv atomic ntawm cov molecules, qib molecular ntawm lub tshuab ntsuas hluav taws xob tsis tuaj yeem pom. molecules).
Cov 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 tsom iav tsis tuaj yeem ncav cuag. Tam sim no qhov kev daws teeb meem siab STORM, tej zaum nyob ib puag ncig 20nm, uas txhais tau tias koj tuaj yeem pom ob lub ntsiab lus sib cais los ntawm ntau tshaj 20 nanometers, thiab cov duab pom hauv qab 20 nanometers yog blob.
Cov molecules yog qhov tsawg kawg nkaus nanometer scale, yog tias koj siv electron microscope, nws tsis zoo, qhov loj ntawm electron microscope tuaj yeem ncav cuag 10, 000 zaug, thiab qhov kev daws teeb meem ntawm electron microscope yog nanometer scale, thiab tib yam. lub sij hawm, kuv xav qhia rau koj tias qhov kev daws teeb meem tseem ceeb heev, yog tias qhov kev daws teeb meem tsis tuaj yeem ncav cuag, qhov loj ntawm qhov siab kuj tseem tsis muaj txiaj ntsig.
