Cov kws tshawb fawb ntawm Massachusetts lub koom haum thev naus laus zis (MIT) tau tsim ib qho ntawm cov khoom muaj zog tshaj plaws thiab pom tau tshaj plaws los ntawm kev zaws thiab fusing graphene plaub ya ri, ob daim duab ntawm cov pa roj carbon. Nws tau laij tawm tau tsuas yog 5% ntawm lub ntom ntog ntawm cov hlau nrog kaum npaug ntxiv hauv nws lub zog. Qhov haujlwm tau coj ua raug luam tawm hauv phau ntawv Kev Tshawb Fawb Kev Tshawb Fawb.
Nyob rau hauv nws thawj daim ntawv, graphene yog suav tias yog qhov muaj zog tshaj plaws ntawm txhua cov ntaub ntawv uas paub, thiab nws cov kev tshawb fawb theoretical tau pib thaum lub sijhawm lig dhau los ntawm lub xyoo pua xeem. Qhov no yog lub ntiaj teb thawj ob-nplaim hluav taws xob tau txais los ntawm Andrey Geim thiab Konstantin Novoselov nyob rau xyoo 2004 los ntawm cov yeeb yaj kiab graphite thinnest rau ntawm ib qho oxidized silicon substrate. Rau qhov ua tiav no, lawv tau muab qhov khoom plig Nobel hauv Physics rau xyoo tom qab.
Txij li thaum pib ntawm graphene, txoj kev rau nws ntau lawm ntawm ib qho kev lag luam nplai tau tsim. Qee qhov kev nce qib tau ua tiav hauv qhov no, txawm li cas los xij, nws tseem tsis tau muaj peev xwm los hloov nws mus rau hauv cov qauv zoo peb-txheej - cov khoom tseem ceeb ntawm cov ntaub ntawv tshwj xeeb no tau ploj, thiab nws lub zog yog ntau qhov kev txiav txim ntawm qhov ntau dua li kwv yees.
Yuav kom daws tau qhov teeb meem no, engineers ntawm MIT tsom rau qhov ua kom haum cov duab geometric uas yuav tsum tau muaj. Lawv txheeb xyuas nws tus cwj pwm nqis mus rau qib siab atomic level, thiab tom qab ntawd siv cov ntaub ntawv tau txais los tsim cov qauv kev ua lej thiab kev sim computer. Cov ntsiab lus xaus tau raws nraim nrog cov kev soj ntsuam, uas tau pib ua nrog cov qauv ua kom pom ntau txhiab zaus los ntawm lwm cov ntaub ntawv, luam tawm ntawm lub siab loj 3D tshuab luam ntawv.
Raws li Markus Buehler, tus thawj coj ntawm lub zej zog thiab ib puag ncig engineering ntawm MIT, 2D cov ntaub ntawv feem ntau tsis muaj txiaj ntsig zoo rau kev tsim cov khoom 3D uas tuaj yeem siv rau hauv kev tsim kho vaj tse. Tab sis kev tsim kho computer tau ua rau nws muaj peev xwm kov yeej cov teeb meem no, thiab duab geometry tau dhau los ua kev txiav txim siab rau qhov ua tiav.
Raws li qhov tshwm sim, cov kws tshawb fawb muaj peev xwm tsim kom muaj cov khoom lag luam zoo thiab ruaj khov los ntawm kev zaws thiab cua sov me me graphene plaub ya ri. Nws cov qauv, ua kom zoo dua ntawm qee co co thiab microscopic diatoms, muaj qhov chaw loj heev nyob rau hauv kev sib piv rau qhov ntim. Nws yog lub npe hu ua gyroid - ib qho kev rov ua tas mus li nrog lub triple periodic tsawg kawg saum npoo, piav qhia los ntawm Alan Schoen ntawm NASA xyoo 1970.
"Cov txiaj ntsig pom tau hais tias qhov tseem ceeb tshaj plaws ntawm cov duab tshiab peb-seem muaj ntau dua ntxiv nrog lawv cov duab tsis sib xws hauv cov duab hluav taws xob ntau dua li nrog cov khoom nws tus kheej," sau tseg ntawm MIT.
Raws li lub tsev kawm ntawv cov kws ua choj, xws li cov duab geometry tuaj yeem siv tau txawm tias muaj cov txheej txheem loj hauv kev tsim kho, xws li pob zeb ua kev. Thiab tus qauv ntxeem tau no yuav tsis tsuas yog muab cov kev ua kom muaj zog, tab sis kuj ua tau zoo thermal rwb thaiv tsev ua tsaug rau cov huab cua sab hauv.
Markus Buehler tau hais tias "Koj tuaj yeem siv graphene tiag tiag los ua cov khoom siv, lossis siv rau qhov ntsuas geometry uas peb nrhiav tau ua ke nrog lwm cov ntaub ntawv, xws li polymers lossis hlau," xaus lus Markus Buehler.
