Graphene imakhala ndi gawo limodzi la maatomu a kaboni omwe amakonzedwa mu lattice ya hexagonal. Chida ichi chimasinthasintha kwambiri ndipo chili ndi mphamvu zabwino zamagetsi, zomwe zimapangitsa kuti chikhale chokongola pa ntchito zambiri—makamaka zigawo zamagetsi.
Ofufuza motsogozedwa ndi Pulofesa Christian Schönenberger wochokera ku Swiss Institute of Nanoscience ndi Dipatimenti ya Fizikisi ya Yunivesite ya Basel adaphunzira momwe angagwiritsire ntchitoKapangidwe ka zinthu zamagetsi kudzera mu kutambasula kwa makina.Pofuna kuchita izi, adapanga chimango chomwe chimatha kutambasulidwa ndi gawo lopyapyala la graphene la atomiki moyenerera poyesa mphamvu zake zamagetsi.
Pamene mphamvu ikugwiritsidwa ntchito kuchokera pansi, gawolo lidzapinda. Izi zimapangitsa kuti gawo la graphene lomwe lili mkati mwake litalikire ndikusintha mphamvu zake zamagetsi.
Masangweji pa shelufu
Asayansiwa adapanga koyamba sangweji ya "sandwich" yokhala ndi graphene pakati pa zigawo ziwiri za boron nitride. Zigawo zomwe zimaperekedwa ndi magetsi zimagwiritsidwa ntchito pa substrate yosinthasintha.
Kusintha kwa magetsiOfufuzawo anayamba kugwiritsa ntchito njira zowunikira kuti azitha kukulitsa graphene. Kenako anagwiritsa ntchito zamagetsi. miyeso yoyendera kuti aphunzire momwe kusintha kwa graphene kumasinthira mphamvu ya ma elekitironi. Miyeso iyenera kuchitidwa pa minus 269°C kuti muwone kusintha kwa mphamvu.
Ma diagram a mphamvu ya chipangizo cha graphene yosasinthika ndi graphene yobiriwira (yokhala ndi mtundu wobiriwira) pa malo osasinthika (CNP). "Kutalika pakati pa ma nuclei kumakhudza mwachindunji makhalidwe a magetsi omwe ali mu graphene," Baumgartnermwachidule zotsatira zake. "Ngati kutambasula kuli kofanana, liwiro la ma elekitironi ndi mphamvu zokha ndi zomwe zingasinthe. Kusintha kwamphamvu kwenikweni ndiye mphamvu ya scalar yomwe idanenedweratu ndi chiphunzitso, ndipo tsopano tatha kutsimikizira izi kudzera muzoyesera." N'zotheka kuti zotsatirazi zitsogolera ku chitukuko cha masensa kapena mitundu yatsopano ya ma transistors. Kuphatikiza apo,Graphene, monga chitsanzo cha zipangizo zina zamitundu iwiri, yakhala nkhani yofunika kwambiri yofufuza padziko lonse lapansi muzaka zaposachedwa.
Nthawi yotumizira: Julayi-02-2021
