Molecular beam epitaxy, kapena MBE, ndi njira yatsopano yopangira mafilimu opyapyala apamwamba kwambiri pamakristasi. Mu ultra-high vacuum zinthu, ndi Kutentha mbaula ali okonzeka ndi mitundu yonse ya zigawo zikuluzikulu zofunika ndi kupanga nthunzi, kupyolera mabowo anapanga pambuyo collimating mtengo atomiki kapena molecular mtengo, jekeseni mwachindunji kutentha koyenera wa gawo lapansi limodzi galasi, kulamulira maselo mtengo. kusanthula kwa gawo lapansi nthawi yomweyo, kumatha kupanga mamolekyu kapena maatomu m'magulu a kristalo kuti apange filimu yopyapyala pa gawo lapansi. "kukula".

Kuti zida za MBE zizigwira ntchito bwino, kuyeretsedwa kwakukulu, kutsika kwapansi komanso nayitrogeni yamadzi yoyera kwambiri imafunika kutumizidwa mosalekeza komanso mosasunthika kupita kuchipinda chozizirira cha zida. Nthawi zambiri, thanki yomwe imapereka nayitrogeni wamadzimadzi imakhala ndi mphamvu yotulutsa pakati pa 0.3MPa ndi 0.8MPa.Nayitrogeni yamadzimadzi pa -196 ℃ imatenthedwa mosavuta kukhala nayitrogeni panthawi yoyendetsa mapaipi. Nayitrogeni wamadzimadzi wokhala ndi chiyerekezo cha mpweya wamadzi pafupifupi 1:700 ataphimbidwa mupaipi, amatenga malo ochulukirapo amadzimadzi a nayitrogeni ndikuchepetsa kuyenda bwino kumapeto kwa payipi yamadzimadzi ya nayitrogeni. Kuphatikiza apo, mu thanki yosungiramo nayitrogeni yamadzimadzi, pamakhala zinyalala zomwe sizinayeretsedwe. Mu payipi yamadzimadzi ya nayitrogeni, kukhalapo kwa mpweya wonyowa kudzatsogoleranso kubadwa kwa ice slag. Ngati zonyansazi zitatulutsidwa muzipangizozi, zingayambitse kuwonongeka kosayembekezereka kwa zida.

Choncho, nayitrogeni wamadzimadzi mu thanki yosungirako panja amatumizidwa ku zida za MBE mu msonkhano wopanda fumbi wokhala ndi mphamvu zambiri, kukhazikika komanso kuyeretsa, ndi kutsika kochepa, palibe nayitrogeni, palibe zodetsa, maola 24 osasokonezeka, dongosolo loyendetsa kayendetsedwe kameneka ndilo mankhwala oyenerera.