I-graphene iqukethe ungqimba olulodwa lwama-athomu ekhabhoni ahlelwe nge-lattice ene-hexagonal. Lesi sici sivumelana nezimo kakhulu futhi sinezici ezinhle kakhulu ze-elekthronikhi, okwenza zikhange ezinhlelweni eziningi zokusebenza—ikakhulukazi izingxenye ze-elekthronikhi.
Abacwaningi abaholwa nguSolwazi uChristian Schönenberger we-Swiss Institute of Nanoscience kanye noMnyango weFiziksi waseNyuvesi yaseBasel bafunde indlela yokuxhaphazaizakhiwo ze-elekthronikhi zezinto ngokusebenzisa ukwelula ngomshini.Ukuze benze lokhu, bakha uhlaka lapho ungqimba oluncane lwe-graphene oluncane lwe-athomu lunganwetshwa ngendlela elawulwayo kuyilapho kulinganiswa izici zalo ze-elekthronikhi.
Uma ingcindezi isetshenziswa kusuka ngezansi, ingxenye izogoba. Lokhu kubangela ungqimba olushumekiwe lwe-graphene ukuthi lunwebe futhi lushintshe izici zalo zikagesi.
Amasemishi eshalofini
Ososayensi baqale bakhiqiza isangweji “lesemishi” elinesendlalelo segraphene phakathi kwezingqimba ezimbili ze-boron nitride. Izingxenye ezinikezwe othintana nabo kagesi zisetshenziswa ku-substrate eguquguqukayo.
Isimo sikagesi esishintshiweAbacwaningi baqale basebenzisa izindlela zokubona ukuze balinganise ukunwetshwa kwe-graphene. Babe sebesebenzisa ugesi izilinganiso zokuthutha ukutadisha ukuthi ukuguqulwa kwe-graphene kushintsha kanjani amandla e-electron. Lezi izilinganiso zidinga ukwenziwa kokungu-269°C ukuze ubone izinguquko zamandla.
Imidwebo yezinga lamandla edivayisi ye-graphene engacindezelwe kanye ne-b strained (enomthunzi oluhlaza) i-graphene endaweni yokushaja emaphakathi (CNP). "Ibanga phakathi kwama-nuclei lithinta ngokuqondile izici ze-electronic states ku-graphene," u-Baumgartnerifinyeze imiphumela. "Uma ukwelula kufana, isivinini se-electron kuphela namandla angashintsha. Ushintsho kuamandla empeleni amandla e-scalar abikezelwa ngombono, futhi manje sesikwazile ukufakazela lokhu ngakhoukuhlola." Kucatshangwa ukuthi le miphumela izoholela ekuthuthukisweni kwezinzwa noma izinhlobo ezintsha zama-transistors. Ngaphezu kwalokho,I-graphene, njengesistimu yemodeli yezinye izinto ezinezinhlangothi ezimbili, isibe yisihloko socwaningo esibalulekile emhlabeni wonkeeminyakeni yamuva.
Isikhathi sokuthumela: Jul-02-2021
