Graphene muaj ib txheej ntawm cov roj carbon atoms teem rau hauv hexagonal lattice. Cov ntaub ntawv no yog hloov tau yooj yim heev thiab muaj cov khoom hluav taws xob hluav taws xob zoo, ua rau nws ntxim nyiam rau ntau cov ntawv thov - tshwj xeeb yog cov hluav taws xob sib xyaw.
Cov kws tshawb nrhiav tau coj los ntawm xibfwb Christian schönenberger los ntawm lub koom haum Swiss ntawm Nanoscience thiab Department of Honics ntawm Hasel kawm txog yuav ua li cas manipulate covCov khoom siv hluav taws xob ntawm cov ntaub ntawv los ntawm kev ncab.Txhawm rau ua qhov no, lawv tsim lub moj khaum uas lub atomically clackene txheej tuaj yeem ncav cuag hauv kev tswj hwm thaum ntsuas hluav taws xob.
Thaum siab tau thov los ntawm hauv qab no, feem tiv thaiv yuav khoov. Qhov no ua rau lub pluaj graphene txheej mus elongate thiab hloov nws cov hluav taws xob.
Qhaub cij ntawm lub txee
Cov kws tshawb fawb ua ntej tsim ib qho "Sandwich" Sandwich nrog ib txheej ntawm graphene ntawm ob txheej ntawm boron nitride. Cov Cheebtsam tau muab nrog cov chaw sib tw hluav taws xob tau thov rau cov substrate tshiab.
Hloov hluav taws xob hauv lub xeevCov kws tshawb nrhiav thawj zaug siv kho qhov muag siv rau calibrate ntawm graphene. Lawv ces siv hluav taws xob Kev ntsuas kev thauj mus los kawm paub tias qhov deformation ntawm graphene hloov lub hluav taws xob hluav taws xob. Tej no Kev ntsuas ntsuas yuav tsum tau ua ntawm rho 269 ° C kom pom kev hloov pauv hluav taws xob.
Ntaus cov khoom siv hluav taws xob theem ntawm ib qho unstrained graphene thiab b strated (ntsuab ntxoov ntxoo) graphene ntawm kev them nqi (CNP). "Qhov kev ncua deb ntawm nuclei ncaj qha cuam tshuam cov yam ntxwv ntawm lub xeev hluav taws xob hauv graphene," BaumgartnerSau lub ntsiab cov txiaj ntsig. "Yog tias qhov ncab yog niaj hnub ua tau, tsuas yog lub tshuab hluav taws xob nrawm thiab lub zog hloov tau. Qhov hloov pauvZog yog qhov tseem ceeb ntawm cov nplai lub peev xwm kwv yees los ntawm txoj kev xav, thiab tam sim no tau ua pov thawj qhov no los ntawmkev sim. " Nws yog conceivable hais tias cov txiaj ntsig no yuav ua rau kev txhim kho ntawm sensors lossis tshiab hom transistors. Ntxiv rau,Graphene, raws li qauv qauv rau lwm cov khoom siv ob-seem, tau dhau los ua cov ntsiab lus tshawb nrhiav thoob ntiaj teb hauvXyoo tas los no.
Lub Sijhawm Post: Jul-02-2021
