Video: Koj puas tuaj yeem pom los ntawm graphene?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nws yog qhov zoo tshaj plaws pob tshab, absorbing tsuas yog 2.3 feem pua ntawm lub teeb uas tsaws rau ntawm nws, tab sis yog koj muaj ib daim ntawv dawb los muab piv rau, koj tuaj yeem pom tias nws nyob ntawd. Qhov ntawd txhais tau tias koj tuaj yeem pom ib txheej ntawm atom nrog koj qhov muag liab qab, yog lawv yog graphene.
Khaws qhov no hauv kev xav, graphene puas tuaj yeem pob tshab?
Graphene yog xwb pob tshab vim nws nyias nyias (ib atom tuab). Yog hais tias nws absorbs 2% ib txheej ces tsuas yog ob peb puas khaubncaws sab nraud povtseg yuav nqus yuav luag tag nrho cov teeb thiab qhov tseem yuav yog ib daim ntawv nyias heev ntawm graphite. Qhov no ua rau nws muaj peev xwm forelectrons txav mus los ntawm ib daim ntawv graphene rau conductelectricity.
Ib tug kuj nug, puas yog graphite tib yam li graphene? Graphene tsuas yog ib txheej atomic ntawm graphite - ib txheej ntawm sp2 bonded carbon atoms teem nyob rau hauv ahexagonal los yog honeycomb lattice. Graphite yog ib qho feem ntau pommineral thiab yog tsim los ntawm ntau txheej ntawm graphene . Kev tsim kho ntawm ob qho tib si graphene thiab graphite , thiab lawv txoj kev fabrication txawv me ntsis.
Tsis tas li ntawd, dab tsi yog graphene siv rau tam sim no?
Muaj peev xwm graphene Cov ntawv thov suav nrog lub teeb yuag, nyias, thiab hloov pauv hluav taws xob / photonics circuits, solarcells, thiab ntau yam kev kho mob, tshuaj thiab kev lag luam txheej txheem tsim kho lossis qhib los ntawm kev siv cov tshiab graphene cov ntaub ntawv. Los ntawm 2017, graphene electronics tau raug tsim nyob rau hauv kev lag luam fab ntawm 200 mm kab.
Dab tsi yog qhov tshwj xeeb ntawm graphene?
Graphene tsuas yog atom-tuab tab sis yog immenselystrong thiab saj zawg zog ib yam nkaus . Nws yog ib qho yooj yim los rub thiab ncab cov ntaub ntawv nyob ib ncig ntawm 25% ntawm nws qhov ntev ntev yam tsis muaj kev puas tsuaj. Nws yog ua tau vim hais tias lub tiaj tus, dav hlau qauv ntawm cov khoom yog ntau yam ntuj tso rau flex, tsis ua txhaum lub atomic bonds ntawm nws cov molecules.
Pom zoo:
Koj puas tuaj yeem qhia los ntawm cov kev nqus dej no seb lub teeb liab puas ua haujlwm zoo hauv kev tsav tsheb photosynthesis?
Ib qho tsis tuaj yeem qhia los ntawm daim duab no, tab sis vim tias chlorophyll ib lub teeb liab, peb tuaj yeem kwv yees tias nws yuav ua tau zoo hauv kev tsav tsheb photosynthesis. Cov xim no muaj peev xwm nqus tau ntau lub teeb ntawm lub teeb (thiab yog li ntau lub zog) dua li chlorophyll ib leeg tuaj yeem nqus tau
Koj puas tuaj yeem pom photosynthesis?
Dab tsi tshwm sim: Feem ntau peb tsis tuaj yeem pom cov pa oxygen tsim los ntawm photosynthesis, tab sis thaum nws tsim hauv qab dej nws zoo li npuas hauv dej. Cov no ntab mus rau hauv lub funnel thiab tshem tawm cov dej nyob rau hauv lub xeem raj
Koj tuaj yeem saib hnub ci dab noj hnub los ntawm koj lub xov tooj?
Nws yog qhov ua tau tias saib lub hnub tsis lim ntawm koj lub xov tooj ntawm tes lossis ntsiav tshuaj lub vijtsam tuaj yeem ua rau koj ob lub qhov muag puas yog tias koj ntsia lub vijtsam ntev txaus. Txhawm rau zam qhov no, siv lub koob yees duab pem hauv ntej ntawm koj lub xov tooj lossis ntsiav tshuaj, thiab tso lub cuab yeej rau hauv av kom nws ntsia lub hnub
Koj puas tuaj yeem kawm electronics ntawm koj tus kheej?
YOG! Feem ntau koj ua tau. Qhov tseeb, kuv yuav mus kom deb li deb tau hais tias muaj lub caij nyoog zoo uas koj tuaj yeem kawm paub ntau ntxiv txog kev siv tshuab hluav taws xob ntawm koj tus kheej uas koj xav tau los ntawm kev kawm hauv tsev kawm qib siab. Internet niaj hnub no tso cai rau koj kawm yuav luag txhua yam koj xav tau hauv online
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DNA tsis soluble hauv cawv, yog li nws tsim ib qho khoom uas cov dej cawv thiab ntsev sib ntsib. Feem ntau lwm yam khoom los ntawm koj lub plhu plhu nyob hauv cov dej ntsev txheej. Cov hlua dawb thiab clumps koj pom yog ntau txhiab DNA molecules clumped ua ke