Chitoliro chotenthetsera cha vacuum(VIP) imagwira ntchito yofunika kwambiri m'magawo osiyanasiyana apamwamba aukadaulo, makamaka m'machitidwe a molecular beam epitaxy (MBE).MBEndi njira yomwe imagwiritsidwa ntchito popanga makristasi apamwamba kwambiri a semiconductor, njira yofunika kwambiri pa zamagetsi amakono, kuphatikizapo zida za semiconductor, ukadaulo wa laser, ndi zipangizo zapamwamba. Kusunga kutentha kochepa kwambiri panthawiyi ndikofunikira, ndipo chitoliro chotenthetsera cha vacuumUkadaulo umaonetsetsa kuti madzi oundana akuyenda bwino kuti zinthu zisamawonongeke. Blog iyi ifufuza udindo ndi kufunika kwachitoliro chotenthetsera cha vacuummu machitidwe a MBE.

Kodi Molecular Beam Epitaxy ndi chiyani (?)MBE)?

Epitaxy ya mamolekyulu (MBE) ndi njira yowongoleredwa kwambiri yopangira mafilimu owonda a zinthu, omwe nthawi zambiri amagwiritsidwa ntchito popanga ma semiconductors. Njirayi imachitika pamalo okwera opanda mpweya, pomwe ma atomu kapena mamolekyu amawongoleredwa ku substrate, zomwe zimathandiza kuti makhiristo akule mosalekeza ndi mosalekeza. Kuti njirayi ipitirire, kutentha kochepa kwambiri kumafunika, komwe ndi komwechitoliro chotenthetsera cha vacuumukadaulo umakhala wofunikira.

Udindo waChitoliro Chotetezedwa ndi Zitsulo in MBE Machitidwe

Chitoliro chotenthetsera cha vacuumimagwiritsidwa ntchito muMBEmakina onyamulira zakumwa zoziziritsa kukhosi, monga nayitrogeni yamadzimadzi kapena heliamu yamadzimadzi, kuti ziziziritse zinthu mkati mwa makinawo. Madzi oziziritsa kukhosi amenewa ndi ofunikira kwambiri posunga vacuum yochuluka kwambiri komanso kuwongolera kutentha komwe kumabweretsa kutentha kwambiri.MBEmakina amafunika kuti agwire bwino ntchito. Popanda kutchinjiriza bwino, madzi a cryogenic amatha kutentha mwachangu, zomwe zimapangitsa kuti kutentha kusasinthasintha komanso kuwononga kukula kwa epitaxial.

Thechitoliro chotenthetsera cha vacuumZimathandiza kuti kutentha kuchepe kwambiri panthawi yonyamula madzi a cryogenic. Chopopera cha vacuum pakati pa mapaipi amkati ndi akunja chimagwira ntchito ngati chotetezera kutentha kwambiri, kuchepetsa kusamutsa kutentha kudzera mu conduction ndi convection, zomwe ndi zifukwa zazikulu za kusinthasintha kwa kutentha mu makina a cryogenic.

Chifukwa chiyaniChitoliro Chotetezedwa ndi Zitsulo Ndikofunikira paMBE Machitidwe

Kulondola kwambiri komwe kumafunika muMBEmachitidwe amapangachitoliro chotenthetsera cha vacuum Chofunika kwambiri. Ukadaulo wa VIP umachepetsa chiopsezo cha cryogenic liquid boiling-off, zomwe zingasokoneze kuzizira ndi kukhazikika kwa vacuum system. Kuphatikiza apo, kugwiritsa ntchito mapaipi oteteza vacuum kumathandiza kuchepetsa ndalama zamagetsi pochepetsa kufunikira kwa mphamvu yowonjezera yozizira, zomwe zimapangitsa kuti makinawo azigwira bwino ntchito.

Ubwino wina wogwiritsa ntchitochitoliro chotenthetsera cha vacuummuMBEMapaipiwa adapangidwa kuti aziteteza kutentha kwa nthawi yayitali, kuonetsetsa kuti magwiridwe antchito nthawi zonse m'malo ovuta kwambiri mongaMBE.

Mapeto:Chitoliro Chotetezedwa ndi Zitsulo ZowonjezeraMBE Magwiridwe Antchito a Dongosolo

Kuphatikiza kwachitoliro chotenthetsera cha vacuummuMBEMakinawa ndi ofunikira kwambiri kuti zinthu izi zizikhala zolondola komanso zokhazikika zomwe njirazi zimafunikira. Mwa kuchepetsa kusamutsa kutentha, ukadaulo wa VIP umaonetsetsa kuti zakumwa za cryogenic zimakhalabe kutentha kotsika kofunikira, zomwe zimapangitsa kuti kukula kwa semiconductor kukhale koyenera komanso kuchepetsa ndalama zogwirira ntchito.MBEukadaulo ukupitilira kupita patsogolo, udindo wachitoliro chotenthetsera cha vacuumpothandizira njirazi zidzakhalabe zofunika kwambiri.