Ukupholisa i-elektroniki enamandla kwii-smartphones zamva nje kunokuba ngumceli mngeni omkhulu. Abaphandi eKing Abdulh Histibela kwiSayensi kunye neTekhnoloji baphuhlise indlela ekhawulezayo nenempumelelo yokwenza izixhobo zekhabhoni ezilungele ubushushu kwizixhobo ze-elektroniki. Izinto eziguquguqukayo zinokufumana ezinye izicelo, ezivela kwizinzwa zegesi kwiiphaneli ze-solar.
Uninzi lwezixhobo ze-elektroniki zisebenzisa iifilimu zegrafu zokuziphatha nokuchitha ubushushu eziveliswe ziinxalenye ze-elektroniki. Nangona igrafu yindlela yendalo yekhabhoni, ulawulo lobushushu kwi-elektroniki sisicelo esifunwayo kwaye ihlala ixhomekeke ekusebenziseni iifilimu eziphezulu zegramical-my. "Nangona kunjalo, indlela yokwenza ezi filimu zesimo segraphite esebenzisa i-polymers njengezixhobo eziluhlaza zinzima kwaye zinamandla," i-postdoc inamandla, Iifilimu zenziwa ngenkqubo yamanyathelo amaninzi efuna amaqondo obushushu ukuya kuthi ga kwi-3,200 degrees Celsius kwaye akanakho ukuvelisa iifilimu ezincinci kunee-microns ezimbalwa.
UDeokar, iCosta kunye noogxa babo baphuhlise indlela efanelekileyo nenamandla yokwenza amaphepha amaphepha egrafu malunga ne-100 i-Nanometers. Iqela lalisebenzisa ubuchwephesha obizwa ngokuba yi-Vapor Vapor ye-Vapor (CVD) yokukhulisa iifilimu ze-Nanometer-my) kwi-nickel foil, apho i-nickel iguqula i-tethane eshushu kumgangatho wayo. "Siphumeze i-NGF kwi-5 yokukhulisa i-5 ye-CVD inyathelo kwiqondo lokushisa lama-900 degrees Celsius, utshilo uDenar.
I-NGF inokukhula ibe ngamashiti ukuya kuthi ga kwi-55 cm2 kwindawo kwaye ikhule kumacala omabini endlwana. Inokususwa kwaye idluliselwe kwezinye iindawo ngaphandle kwesidingo senkxaso ye-polymer, eyimfuno eqhelekileyo xa usebenza ngefilimu yegrafu yerafu engatshatanga.
Ukusebenza kunye ne-elektroni microscopy ye-Elescopy ye-Alesm Roveese, iqela lafumana imifanekiso yothumelo (i-Ite) yamacandelo e-NGF kwi-Nickel. "Ukujonga ujongano phakathi kweefilimu zegrafiki kunye ne-nickel foil yimpumelelo engazange iphumelele kwaye iya kubonelela ngeendlela ezongezelelekileyo kwindlela yokukhula kwezi filimu," utshilo uCosta.
Ubungqingqwa be-NGF buwela phakathi korhwebo olufumaneka kwiifilimu zegraron-fit kunye ne-raphene yodwa. "I-NGF igqibezela i-Graphene kunye ne-Meticial Greyitimentite amashiti, ukongeza kwi-arshal yeefilimu zekhabhoni ezinesidima," utshilo uCosta. Umzekelo, ngenxa yokuguquguquka kwayo, i-NGF inokusetyenziselwa ulawulo lwe-thermal kwiifowuni eziguqukayo ngoku eziqala ukuvela kwimarike. "Xa kuthelekiswa neefilimu zeGraine, ukudityaniswa kwe-NGF kuya kuba yingabizi kwaye izinzile ngakumbi," wongeze.
Nangona kunjalo, i-NGF ineendlela ezininzi ezingaphaya kokuchithwa kobushushu. Into enomdla igxininisile kwimifanekiso ye-tele kukuba ezinye iindawo ze-NGF zizinto ezimbalwa zekhabhoni. "Ngokumangalisayo, ubukho beendawo ezininzi ze-Graines zeGraine iqinisekisa inqanaba elaneleyo lokukhanya okuqinisekileyo kulo lonke ifilimu, utshilo uDeoko. Iqela loPhando liyifumene i-hypotheisile into esebenzayo, i-TRELLUCT ye-NGF inokusetyenziswa njengenxalenye yeeseli zelanga okanye njengezixhobo ezifanelekileyo zokufumana igesi ye-nitrogen diokrogen. "Siceba ukudibanisa i-NGF kwizixhobo ukuze sikwazi ukwenza izinto ezisebenzayo," utshilo uCosta.
Ulwazi oluthe kratya: Gitanjali Deokar el., Ukukhula ngokukhawuleza kweefilimu ze-nanometer-ratite kwi-wafeker-caltite kwi-wafeckel foil kunye nohlalutyo lwabo lwe-Nanotechnology (2020). DoI: 10.1088/161-6528 / Aba712
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IXESHA LOKUQALA: UPE-05-2024