Chidule cha Molecular Beam Epitaxy (MBE)
Ukadaulo wa Molecular Beam Epitaxy (MBE) unapangidwa m'zaka za m'ma 1950 kuti ukonze zipangizo za semiconductor thin film pogwiritsa ntchito ukadaulo wa vacuum evaporation. Ndi chitukuko cha ukadaulo wa vacuum wapamwamba kwambiri, kugwiritsa ntchito ukadaulo kwafalikira ku gawo la sayansi ya semiconductor.
Cholinga cha kafukufuku wa zinthu za semiconductor ndi kufuna zipangizo zatsopano, zomwe zingathandize kuti dongosololi lizigwira ntchito bwino. Kenako, ukadaulo watsopano wa zinthu ungapange zida zatsopano ndi ukadaulo watsopano. Molecular beam epitaxy (MBE) ndi ukadaulo wapamwamba wa vacuum wokulitsa epitaxial layer (nthawi zambiri semiconductor). Imagwiritsa ntchito kutentha kwa maatomu kapena mamolekyu omwe amakhudza gawo limodzi la kristalo. Makhalidwe apamwamba kwambiri a vacuum a njirayi amalola metallization mkati mwa malo ndi kukula kwa zinthu zotetezera kutentha pamalo atsopano a semiconductor, zomwe zimapangitsa kuti pakhale malo opanda kuipitsa.
Ukadaulo wa MBE
Epitaxy ya molecular beam idachitidwa mu vacuum yapamwamba kapena vacuum yapamwamba kwambiri (1 x 10).-8Pa) chilengedwe. Mbali yofunika kwambiri ya epitaxy ya molecular beam ndi kuchuluka kwake kochepa kwa ma deposition, komwe nthawi zambiri kumalola filimuyo kukula pamlingo wochepera 3000 nm pa ola limodzi. Kuchuluka kotereku kwa ma deposition kumafuna vacuum yokwanira kuti ikwaniritse ukhondo wofanana ndi njira zina zosungira ma deposition.
Kuti zigwirizane ndi vacuum yochuluka kwambiri yomwe yafotokozedwa pamwambapa, chipangizo cha MBE （Knudsen cell）chili ndi gawo loziziritsira, ndipo malo oziziritsira kwambiri a chipinda chokulirapo ayenera kusungidwa pogwiritsa ntchito njira yozungulira ya nayitrogeni yamadzimadzi. Nayitrogeni yamadzimadzi imaziziritsa kutentha kwamkati kwa chipangizocho kufika pa 77 Kelvin (−196 °C). Malo otenthetsera otsika amatha kuchepetsa kwambiri kuchuluka kwa zinyalala mu vacuum ndikupereka mikhalidwe yabwino yoyika mafilimu opyapyala. Chifukwa chake, makina odziyimira pawokha oziziritsira a nayitrogeni yamadzimadzi amafunikira kuti zida za MBE zipereke nayitrogeni yamadzimadzi ya -196 °C mosalekeza komanso mosalekeza.
Dongosolo Loziziritsa la Nayitrogeni Yamadzimadzi
Dongosolo loziziritsa la vacuum liquid nayitrogeni limaphatikizapo,
● thanki yoziziritsa
● chitoliro chachikulu ndi nthambi chopangidwa ndi vacuum jekete / payipi yopangidwa ndi vacuum jekete
● Chitoliro chapadera cha MBE cholekanitsa ndi chitoliro chotulutsa utsi chokhala ndi jekete la vacuum
● ma valve osiyanasiyana okhala ndi vacuum jekete
● chotchinga cha gasi ndi madzi
● fyuluta yophimba jekete
● dongosolo lopopera mpweya wotulutsa mpweya
● Kuziziritsa ndi kuyeretsa makina otenthetsera
Kampani ya HL Cryogenic Equipment yazindikira kufunika kwa njira yozizira ya MBE liquid nitrogen, yakonza njira yopangira bwino njira yapadera yoziziritsira ya MBE liquid nitrogen yaukadaulo wa MBE komanso seti yonse ya vacuum insulat.ednjira yopangira mapaipi, yomwe yakhala ikugwiritsidwa ntchito m'mabizinesi ambiri, mayunivesite ndi mabungwe ofufuza.
Zipangizo za HL Cryogenic
Kampani ya HL Cryogenic Equipment yomwe idakhazikitsidwa mu 1992 ndi kampani yogwirizana ndi kampani ya Chengdu Holy Cryogenic Equipment ku China. Kampani ya HL Cryogenic Equipment yadzipereka pakupanga ndi kupanga High Vacuum Insulated Cryogenic Piping System ndi zida zina zothandizira.
Kuti mudziwe zambiri, chonde pitani patsamba lovomerezekawww.hlcryo.com, kapena tumizani imelo kwainfo@cdholy.com.
Nthawi yotumizira: Meyi-06-2021
