Ndi gwero lamuyaya la mphamvu zaulere. Kuyenda kotentha kwa graphene kumasinthidwa kukhala magetsi
Asayansi ku yunivesite ya Arkansas apanga dongosolo lomwe lingathe kupanga magetsi kuchokera kumayendedwe otentha a graphene. Jenereta yamagetsi yomangidwa pamaziko ake ili ndi mwayi wogwira ntchito kwa nthawi yayitali nthawi yonseyi idzakhala kutentha kwabwino - osachepera iyi ndi chiphunzitso chopangidwa zaka zitatu zapitazo.
Jenereta yamphamvu ya graphene. Mwina osati makina, koma microsensors - inde. M'tsogolomu
Graphene ndi "pepala" la maatomu a kaboni olumikizidwa ndi ma bond amodzi ndi awiri. Ma atomu amapangidwa mu hexagon ndipo amapanga mawonekedwe athyathyathya atomu imodzi yokhuthala, zomwe zimapatsa graphene zinthu zingapo zodabwitsa. Mmodzi wa iwo ndi matenthedwe kayendedwe kuti chifukwa makwinya ndi deformations pa pepala graphene.
Graphene pansi pa maikulosikopu ya TEAM 0.5 transmission electron yopangidwa ndi gulu la pa yunivesite ya California, Berkeley. Ma vertices achikasu ndi ma atomu a carbon, mabowo akuda ali mkati mwa hexagons. Ngati mukuganiza kuti wakuda akulozera kumanzere, dikirani masekondi angapo, yesani kutsatira mzere wachikasu wa kaboni kumphepete kumanja, kapena lowetsani chithunzicho mumkonzi wazithunzi ndikuchitembenuza mwachangu madigiri 90-180. Mu IrfanView, izi zitha kuchitika mwa kukanikiza batani la R(c) NCEM, University of California, Berkeley.
Asayansi a ku yunivesite ya Arkansas adafalitsa chiphunzitso zaka zitatu zapitazo chomwe chinasonyeza kuti kusintha mawonekedwe a pamwamba pa graphene kungagwiritsidwe ntchito kupanga mphamvu. Izi zimatsutsana ndi mawerengedwe a Richard Feynman, koma zinapezeka kuti graphene pa kutentha kwa firiji imatha kupanga magetsi osinthasintha.
Kupunduka kwapang'onopang'ono kwa graphene kunapangitsa kuti pakhale kusinthasintha kwapang'onopang'ono, ndipo makina opangidwa ndi asayansi adasintha kukhala pulsating Direct current (DC) ndikukulitsanso (gwero). Izi ndizofunikira chifukwa zamagetsi zimagwira ntchito bwino pamafupipafupi otsika.
Mwina chotsutsana kwambiri ndi chakuti chotsutsa chomwe chimagwiritsidwa ntchito mu dongosolo sichinatenthe panthawi yogwira ntchito. Popeza kuti mphamvuyo inabwera chifukwa chosintha kayendedwe ka kutentha kukhala magetsi, kusanjako kunasungidwa. Ngati magetsi atha, resistor iyenera kuziziritsa.
Pambuyo popanga chithunzi chokonzekera chotsimikizira kuti chiphunzitsocho chimagwira ntchito (PoC), Asayansi tsopano akugwira ntchito yokhoza kusunga mphamvu zomwe zimapangidwa mu dongosolo mu capacitor. Monga mu makanema ojambula pansipa (zobiriwira - zolakwika, zofiira - mabowo, zolipiritsa zabwino):
Chotsatira ndikuchichepetsa zonse ndikumanga pa silicon wafer. Ngati zikuyenda bwino, ndipo ngati zingatheke kuphatikiza makina oterowo miliyoni mu microcircuit imodzi, imatha kugwira ntchito ngati jenereta yosafa yamagetsi.
Chimodzi mwama prototypes a graphene energy generator (c) waku University of Arkansas
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