Graphene e se e tsebahala ka ho ba matla ka mokhoa o makatsang, leha e le botenya bo le bong feela. Joale ke joang e ka matlafatsoang le ho feta? Ka ho e fetola maqephe a taemane, ehlile. Bafuputsi ba Korea Boroa joale ba thehile mokhoa o mocha oa ho fetolela graphene lifiliming tsa daemane tse thinnest, ntle le ho sebelisa khatello e phahameng.
Graphene, graphite le taemane kaofela li entsoe ka lintho tse tšoanang - carbon - empa phapang pakeng tsa lisebelisoa tsena ke kamoo liathomo tsa carbon li hlophisoang le ho tlamahanngoa hammoho. Graphene ke letlapa la khabone le botenya bo le bong feela, bo nang le maqhama a matla lipakeng tsa tsona tse tšekaletseng. Graphite e entsoe ka maqephe a graphene a khomaretsoeng ka holim'a a mang, a nang le litlamo tse matla ka har'a lakane ka 'ngoe empa tse fokolang tse hokahanyang maqephe a fapaneng. 'Me ka taemane, liathomo tsa carbon li hokahane ka matla ho feta ka likarolo tse tharo, ho theha thepa e thata ka mokhoa o makatsang.
Ha maqhama a lipakeng tsa graphene a matlafatsoa, e ka fetoha mofuta oa 2D oa daemane o tsejoang e le diamane. Bothata ke hore, hangata ha ho bonolo ho etsa joalo. Tsela e 'ngoe e hloka likhatello tse phahameng haholo, 'me hang ha khatello eo e tlosoa thepa e khutlela ho graphene. Liphuputso tse ling li kentse liathomo tsa hydrogen ho graphene, empa seo se etsa hore ho be thata ho laola maqhama.
Bakeng sa thuto e ncha, bafuputsi ba Setsi sa Saense ea Motheo (IBS) le Setsi sa Sechaba sa Saense le Theknoloji sa Ulsan (UNIST) ba ile ba fapanyetsana hydrogen bakeng sa fluorine. Maikutlo ke hore ka ho pepesa bilayer graphene ho fluorine, e atametsa likarolo tse peli, e theha maqhama a matla pakeng tsa bona.
Sehlopha se qalile ka ho theha bilayer graphene ho sebelisa mokhoa o lekiloeng le oa 'nete oa ho beha mouoane oa lik'hemik'hale (CVD), holim'a substrate e entsoeng ka koporo le nickel. Joale, ba ile ba pepesa graphene mouoane oa xenon difluoride. Fluorine e ka har'a motsoako oo e khomarela liathomo tsa carbon, e matlafatsa maqhama pakeng tsa graphene layers le ho etsa lera le lesesaane la taemane e nang le fluorinated, e tsejoang e le F-diamane.
Ts'ebetso e ncha e bonolo ho feta e meng, e lokelang ho etsa hore ho be bonolo ho e eketsa. Lipampiri tsa daemane tsa Ultrathin li ne li ka etsa hore ho be le lisebelisoa tse matla, tse nyane le tse tenyetsehang haholoanyane, haholo-holo joalo ka semi-conductor e sephara.
"Mokhoa ona o bonolo oa fluorination o sebetsa haufi le mocheso oa kamore le tlas'a khatello e tlaase ntle le tšebeliso ea plasma kapa mekhoa leha e le efe ea khase ea khase, kahoo e fokotsa monyetla oa ho etsa liphoso," ho bolela Pavel V. Bakharev, mongoli oa pele oa thuto.
Nako ea poso: Apr-24-2020