I-Graphene yakhiwe ungqimba olulodwa lwama-athomu ekhabhoni ahlelwe ku-lattice enezinhlangothi eziyisithupha. Le nto iguquguquka kakhulu futhi inezakhiwo ezinhle kakhulu ze-elekthronikhi, okwenza ikhange ezinhlelweni eziningi—ikakhulukazi izingxenye ze-elekthronikhi.
Abacwaningi abaholwa nguSolwazi uChristian Schönenberger waseSwiss Institute of Nanoscience kanye noMnyango Wefiziksi waseNyuvesi yaseBasel bafunde indlela yokusebenzisaIzakhiwo ze-elekthronikhi zezinto ngokusebenzisa ukwelula ngomshini.Ukuze benze lokhu, bakha uhlaka lapho ungqimba lwe-graphene oluncane ngokwe-athomu lungalulwa khona ngendlela elawulwayo ngenkathi kulinganiswa izakhiwo zalo ze-elekthronikhi.
Uma kusetshenziswa ingcindezi evela ngaphansi, ingxenye izogoba. Lokhu kubangela ukuthi ungqimba lwe-graphene oluhlanganisiwe lunwebe futhi lushintshe izakhiwo zalo zikagesi.
Amasangweji eshalofini
Ososayensi baqale bakhiqiza isangweji “yesangweji” enesendlalelo se-graphene phakathi kwezingqimba ezimbili ze-boron nitride. Izingxenye ezinikezwe ngokuxhumana kukagesi zifakwa ku-substrate eguquguqukayo.
Isimo se-elekthronikhi esishintshileAbacwaningi baqale basebenzisa izindlela zokukhanya ukuze balinganise ukwelulwa kwe-graphene. Base besebenzisa ugesi izilinganiso zokuhamba ukuze kufundwe ukuthi ukuguqulwa kwe-graphene kushintsha kanjani amandla e-electron. Ukulinganisa kudingeka kwenziwe ku-minus 269°C ukuze kubonakale izinguquko zamandla.
Imidwebo yezinga lamandla edivayisi ye-graphene engacindezelwanga kanye ne-graphene ecindezelwe (enombala oluhlaza okotshani) e-neutral point of charge (CNP). "Ibanga eliphakathi kwe-nuclei lithinta ngqo izici zezimo ze-elekthronikhi ku-graphene," kusho uBaumgartner.kufingqe imiphumela. "Uma ukwelula kufana, ijubane namandla e-electron kuphela angashintsha. Ushintsho ku-amandla empeleni yi-scalar potential ebikezelwe yi-theory, futhi manje sesikwazile ukufakazela lokhu ngokusebenzisaizivivinyo." Kucatshangwa ukuthi le miphumela izoholela ekuthuthukisweni kwezinzwa noma izinhlobo ezintsha zama-transistors. Ngaphezu kwalokho,I-graphene, njengohlelo lwemodeli lwezinye izinto ezinezilinganiso ezimbili, isibe yisihloko esibalulekile socwaningo emhlabeni jikelele kueminyakeni yamuva nje.
Isikhathi sokuthunyelwe: Julayi-02-2021
