I-graphite ephezulu yekhwalithi enamandla amahle kakhulu, ukuzinza okushisayo, ukuguquguquka okuphezulu kanye nokusebenza okuphezulu kakhulu okushisayo nokusebenza ngogesi, okwenza kube ngenye yezinto ezibaluleke kakhulu zezicelo ezisetshenziselwa izingcingo eziningi ezisetshenziswa ngezingcingo. Isibonelo, uhlobo olukhethekile lwe-graphite, i-prographite ye-prographite ephakeme kakhulu (i-hopg), ingenye yezinto ezisetshenziswa kakhulu ezindaweni zokucwaninga. Impahla. Lezi zindawo ezinhle kakhulu zibangelwa ukwakheka kwe-graphite, lapho izibopho eziqinile ezinamandla phakathi kwama-athomu e-carbon ezingqimba ze-graphEN Isenzo siphumela ngezinga eliphakeme lokuguquguquka. I-Graphite. Yize i-graphite itholwe emvelweni iminyaka engaphezu kwe-1000 futhi ukuhlanganiswa kwayo okufakelwa kufundwe iminyaka engaphezu kwe-100, ikhwalithi yamasampula we-graphite, zombili zemvelo nokwenziwa, akukude kakhulu. Isibonelo, usayizi wezizinda ezinkulu kakhulu ze-crystal graphite izizinda zezinto zokwenziwa kwe-graphite ngokuvamile zingaphansi kwe-1 mm, ezihluke kakhulu ngosayizi wamakristalu amaningi anjenge-quartz single crystals namakristalu sinye. Usayizi ungafinyelela esikalini semitha. Ubukhulu obuncane kakhulu be-graphite yekristalu eyodwa kungenxa yokuxhumana okubuthakathaka phakathi kwezendlalelo zegrafu, kanye neflethi ye-graphene ubhekene nokugcina ngesikhathi sokukhula, ngakho-ke i-graphite iphulwe kalula imingcele eminingana yokusanhlamvu ekhishini. . Ukuxazulula le nkinga esemqoka, uSolwazi Emeritus we-Ulsan National Institute of Science neTechnology (Unist) kanye nabahlanganyeli bakhe uProf ifilimu, phansi esikalini se-intshi. Indlela yabo isebenzisa i-foil ye-nickel ye-nickel eyodwa njenge-substrate, futhi ama-athomu ekhabhoni adliwa ngemuva kwe-foil ye-nickel ngenqubo "ye-isother Discouluty Esikhundleni sokusebenzisa umthombo wamakhadibhodi we-gaseod, bakhethe okuqukethwe okuqinile kwekhabhoni ukwenza lula ukukhula kwe-graphite. Leliqhinga elisha lenza sikwazi ukukhiqiza amafilimu we-graphite we-crystal angowokuqala anobukhulu obungu-1 inch kanye nama-micron angama-35, noma izingqimba ezingaphezu kuka-100,000 ezinsukwini ezimbalwa. Uma kuqhathaniswa nawo wonke amasampula we-graphite atholakalayo, i-graphite yekristalu eyodwa inokuvuka okushisayo kwe- ~ 2880 w m-1k-1, okuqukethwe okungasho lutho ukungcola, kanye nebanga elincane phakathi kwezendlalelo. . . .
Isikhathi sePosi: Nov-09-2022