Tawm thiab tsim cov tshuab cua txias
Cov khoom siv ob sab
Cov ntaub ntawv ob sab xa mus rau cov ntaub ntawv uas cov khoom siv hluav taws xob tuaj yeem txav tau yooj yim ntawm nanometer nplai hauv ob qhov ntev, uas yog, cov khoom siv hluav taws xob tuaj yeem txav mus rau hauv lub dav hlau xwb. Cov khoom siv ob sab xws li graphene, hexagonal boron nitride, superlattices, quantum qhov dej, thiab lwm yam. Vim tias nws cov thermal conductivity zoo heev, cov khoom siv ob sab tuaj yeem siv rau hauv ntim cov khoom siv hluav taws xob los txhim kho cov cua sov. Graphene, raws li ib tug neeg sawv cev, muaj ib tug ultra-high thermal conductivity ntawm 5300 W / (m·K) vim nws muaj zog sp2 daim ntawv cog lus, uas yuav siv tau raws li ib tug cog lus kub dissipation khoom. Ntau cov ntaub ntawv tau tshaj tawm tias ntau yam graphene-based films, graphene ntawv, multilayer graphene / epoxy polymer cov ntaub ntawv, thiab cov ntawv graphene tuaj yeem siv los ua cov txheej txheem cua sov hauv cov khoom siv hluav taws xob. Hexagonal boron nitride, raws li cov khoom siv ob sab uas ua cov cua sov tab sis tsis ua hluav taws xob, muaj cov thermal conductivity ntawm 390 W / (m·K), thiab cov coefficient ntawm expansion yog qhov tsawg tshaj plaws ntawm cov ntaub ntawv ceramic tam sim no. Daim duab 6 yog daim duab schematic ntawm kev siv ob-seem cov ntaub ntawv los ntim IGBT (Insulated Gate Bipolar Transistor).
Los ntawm cov lej simulation, Liu Shutian li al. pom tias ob-seem cov khoom ntxeem tau nrog qhov zoo tshaj plaws tshav kub dissipation kev ua tau zoo yog ib hom hexagonal microstructure tsis tu ncua. Wu Xiangshui thiab lwm tus tau qhia meej txog kev ntsuas thermal conductivity ntawm cov khoom siv ob sab thiab thermal conductivity ntawm ntau yam khoom siv ob sab. Bao Jie siv ob-seem txheej txheej txheej hexagonal boron nitride los daws cov teeb meem kub dissipation ntawm cov khoom siv hluav taws xob muaj zog, thiab tshaj tawm cov phiaj xwm los txhim kho nws cov cua kub dissipation. Kev siv hluav taws kub dissipation ntawm graphene hauv cov khoom siv ob sab yog cov neeg sawv cev tshaj plaws. Tus kws sau ntawv ntseeg tias cov graphene zaj duab xis tuaj yeem npog ntawm cov nti thaum lub sij hawm tshav kub dissipation ntawm cov hluav taws xob nti, thiab cov hexagonal boron nitride tuaj yeem ntim rau hauv cov khoom ntim, uas tuaj yeem loj heev. Lub degree ntawm txo cov thermal kuj. Ob-dimensional khoom cua sov dissipation yog tam sim no nyob rau hauv txoj kev loj hlob theem nyob rau hauv kev lag luam, thiab tseem muaj ib tug ntev txoj kev mus rau hauv daim teb no. Thaum paub tab, ob-seem cov ntaub ntawv yuav twv yuav raug hu ci nyob rau hauv daim teb ntawm nti kub dissipation.
2.2 Ion cua kub dissipation Thaum ib qho hluav taws xob teb yog siv ntawm ib tug ntse nto thiab blunt nto, ib tug loj tus naj npawb ntawm cov ions tsis zoo yuav raug ionized nyob ze ntawm lub ntse nto, thiab ib tug loj tus naj npawb ntawm zoo ions yuav raug generated nyob ze ntawm lub blunt nto. Cov ions zoo thiab tsis zoo yuav tsum tau nruab nrab, thiab cov ions tsis zoo ya mus rau qhov zoo ions. Kev txav ntawm ions yuav ua rau muaj kev cuam tshuam loj heev rau cov kua dej nyob ib puag ncig. Vim yog inertia, lwm cov molecules nyob rau hauv cov huab cua yog tsav mus ua ke, tsim ion cua. Daim duab 7 yog ib daim duab schematic ntawm ion cua tiam. Ion cua kub dissipation tshuab yog thawj zaug tsim los ntawm xib fwb Alexander Mamishev nyob rau hauv 2006. Tessera, lub ntiaj teb no hluav taws xob khoom miniaturization technology tsum, launched ib tug Electrohydro Dynamic (EHD) tshav kub dissipation tov raws li ion cua kub dissipation. Qhov chaw saum npoo tsuas yog 3cm2 thiab tuaj yeem ntsia tau. Hauv lub laptop. Qhov zoo tshaj plaws ntawm cov txheej txheem cua sov no yog tias tsis muaj cov cuab yeej siv tshuab thiab tsis muaj suab nrov. Muaj qee qhov teeb meem nrog ion cua kub dissipation. Piv txwv li, kev siv lub zog ntawm lub cev tuaj yeem nce ntxiv, thiab cov hluav taws xob hluav taws xob tsim los ntawm ion cua kuj tseem cuam tshuam rau tib neeg kev noj qab haus huv. Txawm li cas los xij, cov teeb meem no tau raug daws. Cov teeb meem ntawm yuav ua li cas tiv thaiv plua plav thiab yuav ua li cas txuas ntxiv lub neej kev pabcuam tseem raug daws.
Tom qab txheeb xyuas thiab txheeb xyuas cov txheej txheem saum toj no ob peb lub tshav kub dissipation, nws tsis yog qhov nyuaj kom pom tias nrog kev hloov kho tas mus li thiab kev nce qib ntawm cov khoom siv hluav taws xob, cov txheej txheem cua sov ntawm cov khoom siv hluav taws xob tau nce mus rau kev txav mus los thiab kev ua haujlwm siab dua. Txawm hais tias cov khoom siv hluav taws xob thiab cov chips hluav taws xob yog qhov tseeb dua thiab kev cog lus, lawv kuj ua rau muaj teeb meem kub ntxhov. Qhov cuam tshuam ntawm qhov kub thiab txias ntawm cov khoom siv hluav taws xob feem ntau yog tshwm sim hauv ob yam: ib qho yog thermal tsis ua haujlwm ntawm cov nti, thiab lwm yam yog kev puas tsuaj rau kev ntxhov siab. Sib piv cov txheej txheem cua sov saum toj no, yog tias ib txoj kev ib leeg muaj ntau qhov tsis txaus, ntau txoj hauv kev tuaj yeem siv los ua kom cov cua sov, xws li: ion cua thiab cua txias rau cua sov dissipation; theem hloov lub zog cia thiab cov kav dej kub rau cov cua sov dissipation; 2. Dimensional cov ntaub ntawv yog ntim thiab ua ke nrog lwm cov cua kub dissipation txoj kev."5D hluav taws xob ntshav" yog ib qho kev cog lus zoo heev, thiab nws yuav yog ib qho kev hloov pauv loj hauv cov khoom siv hluav taws xob los tsim. Kev siv cov khoom siv ob sab rau ntim cov khoom siv hluav taws xob thiab kev siv cov microchannels ntawm cov phaj hauv qab yuav siv tau ntau thiab ntau dua, thiab lwm yam kev siv hluav taws xob yuav tsum tau xaiv rau cov xwm txheej sib txawv. Tus sau tus kheej nyiam theem hloov lub zog cia txias thiab cua sov yeeb nkab txias.
Tam sim no, kev tshawb fawb theoretical ntawm cov cua kub dissipation yog ua tiav, tab sis kuj muaj ntau yam kev nyuaj. Qhov teeb meem ntawm lub fwj dej ntawm cov tshuab cua sov dissipation kuj tseem cuam tshuam rau kev txhim kho ntxiv ntawm cov khoom siv hluav taws xob. Muaj txoj kev mus ntev. Kev rhuav tshem cov teeb meem tam sim no thiab nrhiav cov khoom siv hluav taws xob zoo dua yuav ib txwm yog qhov teeb meem kub kub hauv tshav kub dissipation.
