Dab tsi yog graphene nano cua sov raj?

Dab tsi yog graphene nano cua sov raj?

Lub graphene nano hluav taws xob cua sov tube tso tseg cov cua kub ib txwm siv, thiab siv cov tin dioxide ua lub cev tseem ceeb los ua ntau yam khoom siv rau hauv nano-theem siv cov txheej txheem tshwj xeeb. Nws yog configured nrog ib lub kaum os chemical cov ntaub ntawv thiab muab faib ua ob peb Cheebtsam, thiab rhuab thiab stirred. Module nyob rau hauv chronological kev txiav txim. Thiab cov txheej txheem ntau lawm ntawm CVD (vapor deposition) txheej txheej yog yooj yim, txuag cov ntaub ntawv raw, kom ntseeg tau tias tsis muaj cov organic tebchaw ntau tshaj tawm, thiab nws tuaj yeem siv tau ntev. Thiab lub cev cua sov tuaj yeem ua kom muaj cua sov los ntawm linear mus rau planar.

Lub graphene nano cua sov raj siv txoj kev vapor deposition txheej los muab cov cua sov lub cev rau lub quartz iav, thiab qhov saum npoo ntawm quartz iav yog tus du thiab tsis tuaj yeem txuas rau cov tebchaw.

Cov pa roj carbon nanotube, tseem hu ua bucky raj, yog ib qho khoom siv quantum nrog cov qauv tshwj xeeb (qhov radial dimension yog nyob rau ntawm qhov kev txiav txim ntawm nanometers, lub axial dimension yog nyob rau ntawm qhov kev txiav txim ntawm micrometers, thiab ob qho tag nrho ntawm lub raj yog pib kaw. ). Cov pa roj carbon nanotubes feem ntau yog tsim los ntawm carbon atoms teem rau hauv hexagons los tsim coaxial ncig raj nrog ob peb mus rau kaum txheej. Khaws ib qho kev ncua deb ntawm cov khaubncaws sab nraud povtseg, txog 0.34nm, thiab txoj kab uas hla feem ntau yog 2-20 nm. Thiab raws li qhov sib txawv orientation ntawm carbon hexagon raws li axial kev taw qhia, nws yuav muab faib ua peb hom: zigzag, armchair thiab kauv. Ntawm lawv, kauv carbon nanotubes muaj chirality, thaum zigzag thiab armchair carbon nanotubes tsis muaj chirality.

Cov khoom siv Graphene yog cov khoom siv high-end hauv kev tsim khoom, thiab tseem hu ua cov siv lead ua muaj zog tshaj plaws hauv ntiaj teb. Cov khoom no muaj thermal conductivity zoo heev thiab hluav taws xob conductivity, thiab muaj zog moldability. Nws tuaj yeem raug hu ua universal superconducting khoom. Nws yog qhov tseeb vim tias muaj peev xwm loj ntawm graphene hauv kev tsim kho kev lag luam uas cov kws tshawb fawb Suav tau ua tib zoo saib xyuas kev tsim cov khoom siv graphene rau lub sijhawm ntev, thiab siv zog ua kom tawg los ntawm cov thev naus laus zis no. Tam sim no graphene tau ua tiav hauv kev ua haujlwm ntawm chips.

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