Electron microscopy - isixhobo zezenzululwazi

Electron microscopy ludibaniso iindlela electron-probe ukuphanda emincinci zezinto eziqinileyo, kwakunye nokwakhiwa yabo intsimi ezincane yasekuhlaleni.

Ukuba le ndlela phando kusetyenziswa izixhobo ezikhethekileyo - iimikroskopu, apho umfanekiso yaligqiba bubukho imiqadi electron.

Electron microscopy uye iinkalo ezimbini eziphambili:

• Unikezelo - esebenzisa transmissive electron microscope Kubonakale apho izinto yi umqadi electron ukuba kukho amandla ka-50 ukuya 200 keV. Electron wabadluli into phantsi isifundo, ukukhwela lenses ezikhethekileyo ngemagnethi. Ezi lens kwakheka kwiscreen ekhethekileyo okanye umfanekiso umboniso lokufota izakhiwo angaphakathi into. Ndimele nditsho ukuthi microscopy ukudluliselwa electron yenza kube lula ukufumana ukwanda phantse 1.5 amaxesha * 106. Lunika ithuba lokuba kugweba isakhiwo crystalline iinjongo ngoko ingqalelo indlela eyintloko ukuze ukufunda izakhiwo ukufota of eziqinileyo ezahlukeneyo.

• Uvavanyo (ukukrwaqula) electron microscopy - ikhutshwa phandle esebenzisa iimikroskopu ezizodwa, apho umqadi electron ngokusebenzisa lens sibubona buthathwa probe obhityileyo. Icinga phezu kwento, apho kwenzeka yemisebe zasesekondari, nto leyo ibanjiwe yi detectors ezahlukeneyo baza basenza imiqondiso ahambelanayo.

Kufuneka kuqatshelwe ukuba neemicroscope electron kukho intlaninge yeenzuzo phezu kwiindlela zakudala X-ray microanalysis. Kungenxa yoko le nto iya isiba eqhelekileyo ngakumbi kwaye ukubizwa impumelelo enkulu ngenxa yezixhobo mihla.

Ukongeza, electron microscopy yenza uphuhliso olumandla morphometry computer, eli yona ukusetyenziswa kobugcisa computer ukuba processing ngokucokisekileyo ngakumbi kwaye olupheleleyo lwemifanekiso elektroniki.

Ukuza kuthi ga ngoku, liphuhlise iinkqubo hardware-software, ezinako ukugcina imifanekiso zabo baphumeze processing zabo manani, ulungise ukwahlukana nokukhanya, khetha amalungu ngamnye kuphandwe microstructures.

iimikroskopu electron Modern zixhotyiswe nge iziqhubekisi ezizodwa zokunciphisa amathuba okuba umonakalo ukuvavanya iisampuli eziphathekayo, kwakunye ukwandisa ukuchaneka kwengcaciso malunga uhlalutyo emincinci bezinto, leyo lula kakhulu umsebenzi abaphandi.

impumelelo electron microanalysis zisetyenziswa ngokubanzi ukuqonda intsebenziswano zenyukliya, nto leyo evumela ukuba ukwenza izinto kunye iipropati inoveli, kunye okuqhubekayo ngumzekelo-ntathu ivumela zebhayoloji ukuphanda iindlela emolekyuli ebalulekileyo ezisisiseko zonke iinkqubo ezibubhayoloji. Ukongeza, ngenxa ukusetyenziswa electron microscopy, unako ukwenza inani nezakhi imifuniselo kwaye bafumane isiseko eziyimfuneko ukuze nokuyilwa nanostructures ezintsha.