Txias cov khoom hluav taws xob muaj zog hauv cov smartphones tseeb tuaj yeem yog qhov kev sib tw loj. Cov kws tshawb nrhiav ntawm King Abdullah University of Science thiab Technology tau tsim kho cov roj carbon cov ntaub ntawv rau cov khoom siv hluav taws xob. Cov khoom siv no tuaj yeem nrhiav lwm cov ntawv thov, los ntawm cov roj sensors rau cov khoom siv hnub ci.
Ntau yam hauv cov tshuab hluav taws xob siv cov duab dhos graphite los ua thiab dissipate cov cua sov tsim los ntawm cov hluav taws xob sib xyaw. Although graphite is a natural form of carbon, thermal management in electronics is a demanding application and often depends on the use of high-quality micron-thick graphite films. "Txawm li cas los xij, cov qauv ntawm kev ua cov yeeb yaj kiab graphite no siv cov ntaub ntawv khib nyiab li cov khoom siv raw," piav qhia Gitanjali shoocha uas coj ua haujlwm. Cov yeeb yaj kiab tau tsim los ntawm ntau kauj ruam cov txheej txheem uas yuav tsum muaj qhov kub thiab kawm txog kev kub thiab tsis tuaj yeem tsim cov yeeb yaj kiab thinner dua li ob peb daim duab.
Shoukar, Costa thiab lawv cov npoj yaig tau tsim cov qauv nrawm thiab muaj zog ua rau cov ntawv txheeb ntawm 100 tus tuab tuab. Pab neeg uas siv cov txheej txheem hu ua Tshuaj Vauv Thawv (CVD) los hloov pauv ntawm cov me me ntawm cov methothhane mus rau hauv graphite ntawm nws nto. "Peb ua tiav NGF nyob rau hauv tsuas yog 5 feeb CVD kev loj hlob ntawm cov tshuaj ntsuam xyuas kub ntawm 900 degrees Celsius," Shoukar tau hais.
NGF tuaj yeem loj hlob mus rau hauv cov ntawv txheeb mus txog 55 cm2 nyob rau thaj chaw thiab loj hlob ntawm ob sab ntawm cov ntawv ci. Nws tuaj yeem raug tshem tawm thiab hloov mus rau lwm qhov chaw tsis muaj kev xav tau rau cov kev txhawb nqa polymer, uas yog ib qho kev xav tau ua haujlwm thaum ua haujlwm ntawm cov yeeb yaj kiab.
Ua haujlwm nrog Electron me me neeg tau txais Alessandro Genatese, cov pab pawg tau txais kev kis hluav taws xob kev lag luam (TEM) cov duab ntawm kev hla dhau ntawm Nickel. "Soj ntsuam lub interface ntawm graphite films thiab Nickel ntawv ci yog qhov tsis muaj kev pom tau zoo thiab yuav muab cov kev pom zoo ntxiv rau hauv cov yeeb yaj kiab no," Costa tau hais.
Lub thickness ntawm ngf ntog ntawm kev ua lag luam muaj micron-tuab graphite cov yeeb yaj kiab thiab ib-txheej graphene. "NGF kev ua tiav graphene thiab cov ntawv sau yooj yim, ntxiv rau arsenal ntawm cov duab dhos ua yeeb yaj kiab," Costa tau hais. Piv txwv li, vim nws qhov hloov tau yooj yim, NGF tuaj yeem siv rau kev tswj thermal nyob rau hauv yooj yim xov tooj uas tam sim no pib tshwm sim ntawm kev ua lag luam. "Muab piv nrog cov yeeb yaj kiab graphene, kev sib koom ua ke ntawm NGF yuav pheej yig dua thiab ruaj khov," nws ntxiv.
Txawm li cas los xij, NGF muaj ntau yam kev siv dhau thaum tshav kub dissipation. Ib qho kev nyiam nthuav dav hauv cov duab tem yog tias qee qhov ntawm NGF tsuas yog ob peb txheej ntawm cov pa roj carbon tuab. "Zoo kawg li, muaj cov khaubncaws sab nraud povtseg ntawm ntau txheej ntawm graphene thawj tswj hwm lub teeb pom kev yooj yim thoob plaws zaj yeeb yaj kiab," deoka tau hais. Cov pab pawg tshawb fawb kev xav tias kev coj ua, translucent NGF tuaj yeem siv los ua ib qho kev xav ntawm cov khoom siv hnub ci lossis cov khoom siv pom zoo rau cov pa roj solar. "Peb npaj yuav ua ke ngf rau hauv cov khoom kom nws tuaj yeem ua raws li cov khoom siv nquag muaj ntau yam."
Cov Ntaub Ntawv Ntxiv: Gitanjali deokar li al. DOI: 10.1088 / 1361-6528 / aba712
Yog tias koj ntsib ib qho typo, tsis muaj tseeb, lossis xav xa cov ntawv thov hloov cov ntsiab lus ntawm nplooj ntawv no, thov siv daim foos no. Rau cov lus nug dav dav, thov siv peb daim foos hu. Rau cov tswv yim dav dav, siv cov lus qhia pej xeem seem hauv qab (ua raws cov lus qhia).
Koj lub tswv yim yog ib qho tseem ceeb rau peb. Txawm li cas los xij, vim cov khoom ntim siab ntawm cov lus, peb tsis tuaj yeem lav cov lus teb ntiag tug.
Koj email chaw nyob tsuas yog siv los qhia cov neeg tau txais email. Tsis yog koj qhov chaw nyob tsis yog tus neeg txais chaw nyob yuav siv rau lwm lub hom phiaj. Cov ntaub ntawv koj nkag yuav tshwm hauv koj tus email thiab yuav tsis muab khaws cia los ntawm phys.org hauv ib daim ntawv.
Tau txais nyiaj txhua lub limtiam thiab / lossis txhua hnub tshiab hauv koj lub inbox. Koj tuaj yeem tshem tawm txhua lub sijhawm thiab peb yuav tsis qhia koj cov lus qhia nrog peb tog.
Peb ua peb cov ntsiab lus nkag tau yooj yim rau txhua tus. Txiav txim siab txhawb kev txuj ci X lub hom phiaj nrog tus nqi hwm.
Lub Sijhawm Post: Sep-05-2024