Cov yeeb nkab nqus tsev(VIP) ua lub luag haujlwm tseem ceeb hauv ntau yam kev siv tshuab siab, tshwj xeeb tshaj yog hauv cov kab ke molecular beam epitaxy (MBE).MBEyog ib txoj kev siv los tsim cov khoom siv semiconductor zoo, ib qho txheej txheem tseem ceeb hauv cov khoom siv hluav taws xob niaj hnub, suav nrog cov khoom siv semiconductor, cov thev naus laus zis laser, thiab cov ntaub ntawv siab heev. Kev tswj hwm qhov kub thiab txias qis heev thaum lub sijhawm no yog qhov tseem ceeb, thiab lub raj xa dej rwb thaiv tsevthev naus laus zis ua kom muaj kev thauj mus los ntawm cov kua dej cryogenic kom zoo kom tswj tau cov xwm txheej tsim nyog. Cov blog no yuav tshawb nrhiav lub luag haujlwm thiab qhov tseem ceeb ntawmlub raj xa dej rwb thaiv tsevhauv MBE systems.

Molecular Beam Epitaxy yog dab tsi? (( ... Molecular Beam Epitaxy ))))MBE)?

Molecular beam epitaxy (MBE) yog ib qho txheej txheem tswj hwm zoo rau kev loj hlob cov zaj duab xis nyias ntawm cov ntaub ntawv, feem ntau siv rau hauv kev tsim cov semiconductors. Cov txheej txheem tshwm sim hauv qhov chaw nqus tsev siab, qhov twg cov kab ntawm cov atoms lossis molecules raug coj mus rau ntawm ib lub substrate, uas tso cai rau kev loj hlob ntawm cov siv lead ua ke nrog kev tswj hwm meej. Txhawm rau kom tswj tau qhov kev ua tiav ntawm cov txheej txheem no, qhov kub qis heev yog qhov yuav tsum tau ua, uas yog qhov twglub raj xa dej rwb thaiv tsevthev naus laus zis ua qhov tseem ceeb.

Lub Luag Haujlwm ntawmCov Yeeb Nkab Nqus Tsev in MBE Cov txheej txheem

Cov yeeb nkab nqus tsevsiv rau hauvMBEcov tshuab los thauj cov kua cryogenic, xws li cov kua nitrogen lossis cov kua helium, kom txias cov khoom hauv lub tshuab. Cov kua cryogenic no yog qhov tseem ceeb rau kev tswj hwm lub tshuab nqus tsev siab heev thiab kev tswj kub uasMBEcov kab ke xav tau kev ua haujlwm zoo tshaj plaws. Yog tsis muaj kev rwb thaiv tsev zoo, cov kua dej cryogenic yuav sov sai sai, ua rau qhov kub tsis ruaj khov thiab ua rau qhov zoo ntawm kev loj hlob epitaxial tsis zoo.

Lublub raj xa dej rwb thaiv tsevua kom muaj kev poob cua sov tsawg kawg nkaus thaum lub sijhawm thauj cov kua dej cryogenic no. Lub txheej nqus tsev ntawm cov kav dej sab hauv thiab sab nraud ua haujlwm ua lub rwb thaiv tsev zoo heev, txo cov cua sov hloov pauv los ntawm kev sib kis thiab kev sib hloov, uas yog cov ua rau muaj kev hloov pauv kub hauv cov kab ke cryogenic.

Vim li casCov Yeeb Nkab Nqus Tsev Tseem ceeb rauMBE Cov txheej txheem

High precision yuav tsum tau muaj nyob rau hauvMBEcov txheej txheem ualub raj xa dej rwb thaiv tsev ib qho tsim nyog. Cov thev naus laus zis VIP txo qhov kev pheej hmoo ntawm cov kua dej cryogenic boil-off, uas tuaj yeem cuam tshuam lub kaw lus txias thiab lub tshuab nqus tsev. Tsis tas li ntawd, kev siv cov kav dej nqus tsev rwb thaiv tsev pab txo cov nqi hluav taws xob los ntawm kev txo qhov xav tau lub zog txias ntxiv, txhim kho lub kaw lus tag nrho kev ua haujlwm zoo.

Lwm qhov zoo ntawm kev sivlub raj xa dej rwb thaiv tsevnyob rau hauvMBEcov kab ke yog nws txoj kev ntseeg tau mus sij hawm ntev. Cov kav dej tau tsim los tswj kev rwb thaiv tsev kub ntev, xyuas kom meej tias muaj kev ua haujlwm zoo sib xws hauv cov chaw muaj kev cuam tshuam zoo liMBE.

Xaus lus:Cov Yeeb Nkab Nqus Tsev Txhim khoMBE Kev Ua Haujlwm ntawm Lub System

Kev koom ua ke ntawmlub raj xa dej rwb thaiv tsevnyob rau hauvMBEcov txheej txheem yog qhov tseem ceeb rau kev tswj hwm qhov tseeb thiab kev ruaj khov uas cov txheej txheem no xav tau. Los ntawm kev txo qis kev hloov pauv cua sov, VIP thev naus laus zis ua kom ntseeg tau tias cov kua cryogenic nyob twj ywm ntawm qhov kub qis uas xav tau, txhawb kev loj hlob zoo tshaj plaws ntawm semiconductor thiab txo cov nqi ua haujlwm. Raws liMBEthev naus laus zis txuas ntxiv mus ntxiv, lub luag haujlwm ntawmlub raj xa dej rwb thaiv tsevkev txhawb nqa cov txheej txheem no yuav tseem ceeb heev.