Nws yog ib qho chaw nyob mus ib txhis ntawm lub zog dawb. Lub thermal txav ntawm graphene hloov mus rau hauv hluav taws xob
Cov kws tshawb fawb hauv University of Arkansas tau tsim ib lub tshuab uas tuaj yeem tsim hluav taws xob los ntawm thermal motion ntawm graphene. Lub tshuab hluav taws xob tsim hluav taws xob tsim los ntawm nws lub hauv paus muaj lub sijhawm ua haujlwm ntev li ntev tau Ntev npaum li cas qhov no yuav nyob ntawm qhov kub thiab txias - tsawg kawg qhov no yog qhov kev xav tau tsim peb xyoos dhau los.
Graphene zog generator. Tej zaum tsis yog rau cov tshuab, tab sis rau microsensors - yog. Yav tom ntej
Graphene yog "daim ntawv" ntawm carbon atoms txuas los ntawm ib qho thiab ob daim ntawv cog lus. Cov atoms yog teem rau hauv hexagons thiab tsim ib tug ca qauv ib tug atom tuab, uas muab graphene ib tug xov tooj ntawm amazing zog. Ib tug ntawm lawv yog thermal txav uas ua rau wrinkles thiab deformations ntawm daim ntawv graphene.
Graphene nyob rau hauv TEAM 0.5 kis tau tus mob electron microscope tsim los ntawm ib pab neeg ntawm University of California, Berkeley. Cov nplooj daj yog cov pa roj carbon atom, cov qhov dub nyob hauv cov hexagons. Yog tias koj xav tias tus dub taw tes rau sab laug, tos ob peb lub vib nas this, sim taug qab cov pa roj carbon daj rau ntawm ntug sab xis, lossis thauj cov duab rau hauv cov duab editor thiab tig nws sai sai 90-180 degrees. Hauv IrfanView, qhov no tuaj yeem ua tiav los ntawm nias lub pob R(c) NCEM, University of California, Berkeley.
Cov kws tshawb fawb ntawm University of Arkansas tau luam tawm ib txoj kev xav peb xyoos dhau los uas tau pom tias kev hloov cov duab ntawm cov graphene tuaj yeem siv los tsim lub zog. Qhov no contradicted Richard Feynman cov kev suav, tab sis nws muab tawm tias graphene nyob rau hauv chav tsev kub yuav ua tau alternating tam sim no.
Maj mam deforming graphene induced ib tug tsawg zaus alternating tam sim no, thiab ib tug system tsim los ntawm cov kws tshawb fawb tau hloov nws mus rau hauv pulsating direct tam sim no (DC) thiab ntxiv amplified nws (qhov chaw). Qhov no yog qhov tseem ceeb vim tias cov khoom siv hluav taws xob ua haujlwm tau zoo dua ntawm qhov qis dua.
Tej zaum feem ntau counterintuitive yog tias cov resistor siv nyob rau hauv lub kaw lus tsis kub thaum lub sij hawm ua hauj lwm. Txij li thaum lub zog los ntawm kev hloov cov thermal txav mus rau hauv hluav taws xob, qhov sib npaug tau khaws cia. Yog hais tias cov hluav taws xob khiav tawm, lub resistor yuav tsum txias.
Tom qab tsim daim duab npaj ua pov thawj tias txoj kev xav ua haujlwm hauv kev xyaum (PoC), Cov kws tshawb fawb tam sim no tau ua haujlwm ntawm qhov muaj peev xwm khaws cia lub zog tsim tawm hauv qhov system hauv lub capacitor. Ib yam li hauv cov duab hauv qab no (ntsuab - tsis zoo nqi, liab - qhov, qhov zoo):
Cov kauj ruam tom ntej yog ua kom me me tag nrho thiab tsim ntawm silicon wafer. Yog tias nws ua tiav, thiab yog tias nws tuaj yeem ua ke nrog ib lab cov kab ke hauv ib lub microcircuit, nws tuaj yeem ua haujlwm zoo li lub tshuab hluav taws xob tsis txawj tuag.
Ib qho piv txwv ntawm graphene zog generators (c) ntawm University of Arkansas
Qhov no yuav txaus siab rau koj:
