Graphene e se e tsebahala ka ho ba matla ka mokhoa o makatsang, leha e le botenya ba athomo e le 'ngoe feela. Joale e ka matlafatsoa le ho feta joang? Ka ho e fetola maqephe a daemane, ehlile. Bafuputsi ba Korea Boroa joale ba qapile mokhoa o mocha oa ho fetola graphene hore e be lifilimi tse tšesaane ka ho fetisisa tsa daemane, ntle le ho sebelisa khatello e phahameng.
Graphene, graphite le daemane kaofela li entsoe ka ntho e le 'ngoe - carbon - empa phapang lipakeng tsa thepa ena ke hore na liathomo tsa carbon li hlophisitsoe joang le ho kopanngoa hammoho. Graphene ke lakane ea carbon e teteaneng athomo e le 'ngoe feela, e nang le litlamo tse matla pakeng tsa tsona tse otlolohileng. Graphite e entsoe ka maqephe a graphene a kopantsoeng holim'a a mang, a nang le litlamo tse matla ka har'a lakane ka leng empa a fokolang a hokahanya maqephe a fapaneng. 'Me ka daemane, liathomo tsa carbon li hokahane ka matla haholo ka litekanyo tse tharo, li etsa thepa e thata haholo.
Ha maqhama pakeng tsa mealo ea graphene a matlafatsoa, e ka fetoha mofuta oa 2D oa daemane o tsejoang e le diamond. Bothata ke hore, hangata sena ha se bonolo ho se etsa. Tsela e 'ngoe e hloka khatello e phahameng haholo, 'me hang ha khatello eo e tlosoa thepa e khutlela ho graphene. Lithuto tse ling li ekelitse liathomo tsa haedrojene ho graphene, empa seo se etsa hore ho be thata ho laola maqhama.
Bakeng sa phuputso e ncha, bafuputsi Setsing sa Saense ea Motheo (IBS) le Setsing sa Naha sa Saense le Theknoloji sa Ulsan (UNIST) ba fetotse haeterojene ka fluorine. Khopolo ke hore ka ho pepesetsa graphene ea bilayer ho fluorine, e kopanya likarolo tse peli, e leng se etsang hore ho be le maqhama a matla pakeng tsa tsona.
Sehlopha se qalile ka ho theha graphene ea bilayer ka ho sebelisa mokhoa o lekiloeng oa ho beha mouoane oa lik'hemik'hale (CVD), holim'a substrate e entsoeng ka koporo le nickel. Eaba ba pepesetsa graphene mouoaneng oa xenon difluoride. Fluorine e motsoakong oo e khomarela liathomo tsa khabone, e matlafatsa maqhama pakeng tsa mekhahlelo ea graphene le ho theha lera le lesesaane haholo la daemane e nang le fluorine, e tsejoang e le F-diamane.
Ts'ebetso e ncha e bonolo haholo ho feta tse ling, e leng se lokelang ho etsa hore ho be bonolo ho e atolosa. Maqephe a masesaane a ultrathine a ka etsa likarolo tsa elektroniki tse matla, tse nyane le tse tenyetsehang haholoanyane, haholo-holo e le semi-conductor e nang le sekgeo se seholo.
“Mokhoa ona o bonolo oa ho ntša fluorination o sebetsa mochesong o haufi le kamore le tlas'a khatello e tlase ntle le tšebeliso ea plasma kapa mekhoa efe kapa efe ea ho kenya tšebetsong khase, ka hona o fokotsa monyetla oa ho baka liphoso,” ho bolela Pavel V. Bakharev, mongoli oa pele oa phuputso ena.
Nako ea poso: Mmesa-24-2020