graphite ea boleng bo holimo e na le matla a matla a mochini, botsitso ba mocheso, maemo a phahameng a fetohang le maemo a phahameng haholo a sefofane le motlakase, e leng se etsang hore e be e 'ngoe ea lisebelisoa tsa bohlokoa tse tsoetseng pele bakeng sa lits'ebetso tse ngata tse kang li-conductors tsa photothermal tse sebelisoang joalo ka libeteri mehala. Ka mohlala, mofuta o khethehileng oa graphite, pyrolytic graphite (HOPG) e laetsoeng haholo, ke e 'ngoe ea tse sebelisoang ka ho fetisisa lilaboratoring. Lintho tse bonahalang. Lintho tsena tse babatsehang li bakoa ke sebopeho sa graphite, moo maqhama a matla a covalent pakeng tsa liathomo tsa carbon tse ka har'a likarolo tsa graphene li tlatsetsa ho thepa e babatsehang ea mochine, mocheso oa motlakase le motlakase, ha ho ntse ho e-na le tšebelisano e nyenyane haholo pakeng tsa likarolo tsa graphene. Ketso e fella ka boemo bo phahameng ba ho feto-fetoha ha maemo. graphite. Le hoja graphite e ’nile ea sibolloa linthong tsa tlhaho ka lilemo tse fetang 1000 ’me motsoako oa eona oa maiketsetso o ’nile oa ithutoa ka lilemo tse fetang 100, boleng ba lisampole tsa graphite, tsa tlhaho le tsa maiketsetso, bo hole haholo le bo loketseng. Ka mohlala, boholo ba libaka tse kholo ka ho fetisisa tsa crystal graphite tse entsoeng ka thepa ea graphite hangata li ka tlaase ho 1 mm, tse fapaneng haholo le boholo ba likristale tse ngata tse kang quartz single crystals le silicon single crystals. Boholo bo ka fihla sekala sa mithara. Ntho e nyenyane haholo ea graphite e le 'ngoe ea kristale e bakoa ke ho sebelisana ho fokolang pakeng tsa lihlopha tsa graphite,' me ho thata ho boloka lera la graphene nakong ea kholo, kahoo graphite e robeha habonolo ka meeli e mengata ea lijo-thollo tse le 'ngoe ka pherekano. . Ho rarolla bothata bona bo ka sehloohong, Moprofesa Emeritus oa Ulsan National Institute of Science and Technology (UNIST) le basebetsi-'moho le eena Prof. Liu Kaihui, Prof. Wang Enge oa Univesithi ea Peking, le ba bang ba hlahisitse leano la ho kopanya mokhoa o mosesaane oa boholo-holo. likristale tse le 'ngoe tsa graphite. filimi, ho fihlela sekala sa inch. Mokhoa oa bona o sebelisa foil e le 'ngoe ea kristale ea nickel e le substrate,' me liathomo tsa carbon li fepeloa ho tloha ka morao ho lesela la nickel ka "isothermal dissolution-diffusion-deposition process". Ho e-na le ho sebelisa mohloli oa khateboto ea khase, ba ile ba khetha thepa e tiileng ea carbon ho nolofatsa khōlo ea graphite. Leano lena le lecha le etsa hore ho khonehe ho hlahisa lifilimi tsa graphite e le 'ngoe ea kristale e nang le botenya bo ka bang 1 inch le 35 microns, kapa ho feta 100,000 graphene layers ka matsatsi a seng makae. Ha ho bapisoa le mehlala eohle e fumanehang ea graphite, graphite e le 'ngoe ea kristale e na le mocheso oa mocheso oa ~ 2880 W m-1K-1, lintho tse sa reng letho tsa litšila, le sebaka se fokolang pakeng tsa lihlopha. (1) Khokahano e atlehileng ea lifilimi tsa nickel e le 'ngoe tsa boholo bo boholo kaha li-ultra-flat substrates li qoba ho senyeha ha graphite ea maiketsetso; (2) 100,000 mealo ea graphene e hōlileng ka isothermally ka lihora tse ka bang 100, e le hore karolo e 'ngoe le e 'ngoe ea graphene e kopane sebakeng se tšoanang sa lik'hemik'hale le mocheso, e leng se tiisang boleng bo tšoanang ba graphite; 3
Nako ea poso: Nov-09-2022