Ukadaulo
Molecular beam epitaxy, kapena MBE, ndi njira yatsopano yopangira mafilimu opyapyala apamwamba a makristalo pa ma crystal substrates. Mu mikhalidwe yotsika kwambiri ya vacuum, chitofu chotenthetsera chimakhala ndi mitundu yonse ya zinthu zofunika ndikupanga nthunzi, kudzera m'mabowo opangidwa pambuyo pophatikizana ndi mtanda wa atomiki kapena molecular, kulowetsa mwachindunji kutentha koyenera kwa substrate imodzi ya kristalo, kuwongolera mtanda wa molecular ku substrate scanning nthawi yomweyo, kungapangitse mamolekyu kapena maatomu mu zigawo za kristalo kuti apange filimu yopyapyala pa "kukula" kwa substrate.
Kuti zipangizo za MBE zigwire ntchito bwino, kuyera kwambiri, kupanikizika kochepa, komanso nayitrogeni yamadzimadzi yoyera kwambiri imafunika kunyamulidwa mosalekeza komanso mokhazikika kupita ku chipinda choziziritsira cha zipangizozi. Kawirikawiri, thanki yomwe imapereka nayitrogeni yamadzimadzi imakhala ndi mphamvu yotulutsa mphamvu pakati pa 0.3MPa ndi 0.8MPa. Nayitrogeni yamadzimadzi pa -196℃ imasanduka nayitrogeni mosavuta panthawi yoyendetsa mapaipi. Nayitrogeni yamadzimadzi yokhala ndi chiŵerengero cha gasi ndi madzi cha pafupifupi 1:700 ikangopakidwa mpweya mupaipi, imatenga malo ambiri oyenda ndi nayitrogeni yamadzimadzi ndikuchepetsa kuyenda kwabwinobwino kumapeto kwa payipi ya nayitrogeni yamadzimadzi. Kuphatikiza apo, mu thanki yosungira nayitrogeni yamadzimadzi, pakhoza kukhala zinyalala zomwe sizinayeretsedwe. Mu payipi ya nayitrogeni yamadzimadzi, kukhalapo kwa mpweya wonyowa kudzapangitsanso kuti pakhale madzi oundana. Ngati zinyalalazi zitatulutsidwa mu zipangizozi, zidzawononga zidazo mosayembekezereka.
Chifukwa chake, nayitrogeni yamadzimadzi yomwe ili mu thanki yosungiramo zinthu panja imasamutsidwa kupita ku zida za MBE mu workshop yopanda fumbi ndi yogwira ntchito bwino, yokhazikika komanso yoyera, ndipo mphamvu yotsika, yopanda nayitrogeni, yopanda zinyalala, maola 24 osasinthasintha, njira yoyendetsera mayendedwe yotereyi ndi chinthu choyenera.
Zipangizo zofanana za MBE
Kuyambira mu 2005, HL Cryogenic Equipment (HL CRYO) yakhala ikukonza ndi kukonza makinawa komanso kugwirizana ndi opanga zida za MBE padziko lonse lapansi. Opanga zida za MBE, kuphatikizapo DCA, REBER, ali ndi ubale wogwirizana ndi kampani yathu. Opanga zida za MBE, kuphatikizapo DCA ndi REBER, agwirizana m'mapulojekiti ambiri.
Riber SA ndi kampani yotsogola padziko lonse lapansi yopereka zinthu za molecular beam epitaxy (MBE) ndi ntchito zina zokhudzana ndi kafukufuku wa semiconductor wa compound ndi ntchito zamafakitale. Chipangizo cha Riber MBE chimatha kuyika zinthu zopyapyala kwambiri pa substrate, ndi zowongolera zapamwamba kwambiri. Zipangizo zotsukira mpweya za HL Cryogenic Equipment (HL CRYO) zili ndi Riber SA. Zipangizo zazikulu kwambiri ndi Riber 6000 ndipo zazing'ono kwambiri ndi Compact 21. Zili bwino ndipo zadziwika ndi makasitomala.
DCA ndiye MBE yotsogola padziko lonse lapansi ya oxide. Kuyambira mu 1993, chitukuko cha njira zophikira, kutentha kwa ma antioxidant substrate ndi magwero a antioxidant chachitika. Pachifukwa ichi, ma laboratories ambiri otsogola asankha ukadaulo wa DCA oxide. Makina a MBE a semiconductor a Composite amagwiritsidwa ntchito padziko lonse lapansi. Dongosolo lozungulira la VJ liquid nitrogen la HL Cryogenic Equipment (HL CRYO) ndi zida za MBE za mitundu ingapo ya DCA zili ndi luso lofanana m'mapulojekiti ambiri, monga chitsanzo P600, R450, SGC800 ndi zina zotero.
Tebulo la Magwiridwe Antchito
| Shanghai Institute of Technical Physics, Sukulu ya Sayansi ya ku China |
| Bungwe la 11th Institute of China Electronics Technology Corporation |
| Bungwe la Semiconductors, Sukulu ya Sayansi ya ku China |
| Huawei |
| Alibaba DAMO Academy |
| Powertech Technology Inc. |
| Delta Electronics Inc. |
| Suzhou Everbright Photonics |
Nthawi yotumizira: Meyi-26-2021
