I-Graphene isivele yaziwa ngokuba namandla amakhulu, naphezu kokuba nobukhulu obuyi-athomu eyodwa kuphela. Ngakho-ke ingenziwa kanjani ibe namandla nakakhulu? Ngokuyiguqula ibe amashidi edayimane, vele. Abacwaningi eNingizimu Korea manje sebesungule indlela entsha yokuguqula i-graphene ibe amafilimu edayimane amancane kakhulu, ngaphandle kokusebenzisa umfutho ophezulu.
I-Graphene, i-graphite nedayimane konke kwenziwa ngezinto ezifanayo - ikhabhoni - kodwa umehluko phakathi kwalezi zinto ukuthi ama-athomu ekhabhoni ahlelwe futhi ahlanganiswe kanjani ndawonye. I-Graphene iyishidi lekhabhoni eliyi-athomu elilodwa nje ubukhulu, elinezibopho eziqinile phakathi kwawo ngokuvundlile. I-Graphite yakhiwe ngamashidi e-graphene abekwe phezu komunye nomunye, anezibopho eziqinile ngaphakathi kweshidi ngalinye kodwa abuthakathaka axhumanisa amashidi ahlukene. Futhi kudayimane, ama-athomu ekhabhoni axhumene kakhulu ngobukhulu obuthathu, okwenza kube yinto eqinile kakhulu.
Uma izibopho phakathi kwezingqimba ze-graphene ziqiniswa, zingaba uhlobo lwedayimane oluyi-2D olwaziwa ngokuthi i-diamond. Inkinga iwukuthi, lokhu ngokuvamile akulula ukukwenza. Enye indlela idinga ukucindezeleka okuphezulu kakhulu, futhi ngokushesha nje lapho lokho kucindezeleka sekususiwe, izinto zibuyela emuva zibe yi-graphene. Ezinye izifundo zengeze ama-athomu e-hydrogen ku-graphene, kodwa lokho kwenza kube nzima ukulawula izibopho.
Kulolu cwaningo olusha, abacwaningi e-Institute for Basic Science (IBS) kanye ne-Ulsan National Institute of Science and Technology (UNIST) bashintshe i-hydrogen nge-fluorine. Umqondo uwukuthi ngokudalula i-bilayer graphene ku-fluorine, kuhlanganisa lezi zingqimba ezimbili, kwakha izibopho eziqinile phakathi kwazo.
Ithimba laqala ngokudala i-bilayer graphene besebenzisa indlela evivinywe kahle yokufakwa komphunga wamakhemikhali (CVD), ku-substrate eyenziwe ngethusi ne-nickel. Base beveza i-graphene kumphunga we-xenon difluoride. I-fluorine ekuleyo ngxube inamathela kuma-athomu e-carbon, iqinisa izibopho phakathi kwezingqimba ze-graphene futhi idala ungqimba oluncane kakhulu lwedayimane eli-fluorinated, olwaziwa ngokuthi i-F-diamane.
Inqubo entsha ilula kakhulu kunezinye, okufanele kwenze kube lula ukuyikhulisa. Amashidi edayimane amancane kakhulu angenza izingxenye ze-elekthronikhi eziqinile, ezincane neziguquguqukayo, ikakhulukazi njenge-semi-conductor enesikhala esikhulu.
“Le ndlela elula yokukhipha uketshezi olujiyile isebenza ekushiseni okuseduze negumbi futhi ngaphansi kwengcindezi ephansi ngaphandle kokusebenzisa i-plasma noma ezinye izindlela zokusebenzisa igesi, ngakho-ke kunciphisa amathuba okudala amaphutha,” kusho uPavel V. Bakharev, umbhali wokuqala walolu cwaningo.
Isikhathi sokuthunyelwe: Ephreli-24-2020