Ngokwemibiko yabezindaba yakwamanye amazwe, nakuba i-graphene iwugqinsi nje njenge-athomu eyodwa, amandla ayo kufanele azwakale ngumuntu wonke, kodwa ingabe ikhona indlela yokuyenza ibe namandla? --Yiguqule ibe yizicucu zamadayimane. Abacwaningi baseNingizimu Korea manje sebethuthukise indlela yokuguqula i-graphene ibe ifilimu yedayimane elincane kakhulu ngaphandle kokusebenzisa umfutho ophezulu.

Igraphene, igraphite nedayimane konke kwenziwa nge-material-carbon efanayo-kodwa umehluko phakathi kwalezi zinto usekuhlelekeni nasekuhlanganiseni kwama-athomu ekhabhoni. I-graphene ungqimba lwekhabhoni olunogqinsi lwe-athomu eyodwa kuphela, olunamabhondi avundlile aqinile phakathi kwawo. I-graphite yakhiwe ngamashidi e-graphene apakishwe ngokulandelana. Isendlalelo ngasinye sinezibopho eziqinile ngaphakathi, futhi izingqimba ezihlukene zixhunywe izibopho ezibuthakathaka. Edayimaneni, ama-athomu ekhabhoni axhumene eduze esikhaleni esinezinhlangothi ezintathu ukuze akhe into eqinile ngendlela emangalisayo.

Lapho isibopho phakathi kwezingqimba zegraphene siqiniswa, iba uhlobo lwedayimane oluyi-2D olubizwa nge-diamane. Inkinga iwukuthi ngokuvamile kulula kakhulu ukwenza. Enye yalezi zindlela idinga ingcindezi ephezulu kakhulu. Uma ukucindezela kunyamalala, izinto zizoncishiswa zibe yi-graphene. Ezinye izifundo zidinga ukwengezwa kwama-athomu e-hydrogen ku-graphene, kodwa lokhu kwenza kube nzima ukulawula izibopho.

Kulolu cwaningo olusha, abacwaningi e-Institute of Basic Science (IBS) kanye ne-Ulsan National Institute of Science and Technology (UNIST) bathathe indawo ye-hydrogen nge-fluorine. Umqondo wabo uwukuveza izingqimba ezimbili ze-graphene kuma-athomu e-fluorine, ngale ndlela ukwenza izingqimba ezimbili ze-graphene zisondelane ukuze zakhe isibopho samakhemikhali esinamandla.

Ithimba labacwaningi liqale lasebenzisa indlela ethembekile ye-chemical vapor deposition (CVD) ukuze lilungise i-graphene enezingqimba ezimbili ku-copper kanye ne-nickel substrates. Babe sebedalula igraphene kumhwamuko we-xenon difluoride. Ngalesi sikhathi, ama-athomu e-fluorine engxubeni azonamathela kuma-athomu ekhabhoni, ngaleyo ndlela aqinise ukuhlangana phakathi kwezingqimba ze-graphene futhi akhe ungqimba lwedayimane eline-fluorinated ultra-thin, okungukuthi F-diamane.

Inqubo entsha ilula kakhulu kunezinye izinqubo ezedlule, okufanele zenze kube lula ukunwetshwa. Idayimane elizacile kakhulu lingenziwa libe izingxenye ze-elekthronikhi ezinamandla, ezincane, nezivumelana nezimo, ikakhulukazi njenge-semiconductor yegebe elibanzi.

U-Pavel V. Bakharev, umbhali oholayo wocwaningo, wabonisa ukuthi le ndlela elula ye-fluorination ingasebenza eduze negumbi lokushisa kanye nokucindezela okuphansi ngaphandle kokusebenzisa i-plasma noma iyiphi indlela yokuvuselela igesi, ngakho-ke lokhu kunciphisa kakhulu amathuba okuba nokukhubazeka.

Xhumanisa nale ndatshana: Ifilimu yedayimane elincane kakhulu elenziwe ngegraphene

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