Qhov rai pab kom ntau li 60% ntawm lub zog poob hauv cov tsev. Hauv huab cua kub, lub qhov rais yog rhuab los ntawm sab nraud, radiating thermal zog rau hauv lub tsev. Thaum nws txias sab nraum zoov, lub qhov rais ua kom sov tuaj sab hauv, thiab lawv radiate cua sov mus rau sab nraud ib puag ncig. Cov txheej txheem no hu ua kev ua kom txias radiative. Qhov no txhais tau tias lub qhov rais tsis muaj txiaj ntsig ntawm kev ua kom lub tsev sov lossis txias li nws xav tau.

Puas yog nws tuaj yeem tsim kho lub khob uas tuaj yeem tig los yog tua cov nyhuv txias rau nws tus kheej nyob ntawm nws qhov kub? Cov lus teb yog muaj.

Tus Wiedemann-Franz Txoj Cai hais tias qhov zoo dua hluav taws xob ntawm cov khoom, qhov zoo dua cov thermal conductivity. Txawm li cas los xij, Vanadium Dioxide cov khoom yog qhov kev zam, uas tsis ua raws li txoj cai no.

Cov kws tshawb nrhiav ntxiv ib qho txheej nyias ntawm vanadium dioxide, ib qho sib xyaw uas hloov pauv ntawm insulator rau tus neeg saib xyuas thaum nyob ib ncig ntawm 68 ° C, rau ib sab ntawm lub khob.Vanadium dioxide (VO2)yog cov khoom siv ua haujlwm nrog cov khoom siv ua kom tawg ntawm theem hloov chaw. Nws morphology tuaj yeem hloov dua siab tshiab ntawm cov insulator thiab hlau. Nws zoo li insulator nyob rau hauv chav tsev kub thiab raws li tus thawj coj hlau ntawm qhov kub nyob sab saum toj 68 ° C. Qhov no yog vim qhov tseeb hais tias nws cov qauv atomic tuaj yeem hloov pauv ntawm chav kub ntawm 68 ° hauv tsawg dua 1 Nanosecond, uas yog qhov zoo rau cov ntawv thov hluav taws xob. Kev tshawb fawb ntsig txog tau coj ntau tus neeg kom ntseeg tias Vanadium Dioxide yuav dhau los ua kev lag luam hluav taws xob kev lag luam rau yav tom ntej.

Cov kws tshawb fawb ntawm University University nce qib kev hloov pauv theem rau 100 ° C los ntawm kev ntxiv cov khoom lag luam hauv German, rau cov vanadium dioxide zaj duab xis. Lawv tau ua kom tawg rau hauv RF daim ntaub ntawv, siv Vanadium dioxide thiab Theem-pauv hloov lub thev naus laus zis los tsim cov lim dej ultra los tsim cov lim dej ultra los tsim cov lim dej ultra los tsim cov lim dej ultra los tsim cov lim dej ultra los tsim cov lim dej ultra los tsim cov lim dej ultra los tsim cov lim dej ultra los tsim cov lim dej ultra los tsim cov lim dej ultra no Qhov tshiab ntawm lub lim no tshwj xeeb yog tsim nyog rau zaus siv los ntawm kev sib txuas lus sib txuas lus.

Ib qho ntxiv, cov khoom siv lub cev ntawm vanadium dioxide, xws li kev hloov chaw tiv thaiv thiab infraritive, yuav hloov pauv txav los ntawm cov txheej txheem hloov pauv. Txawm li cas los xij, ntau daim ntawv thov ntawm VO2 xav tau qhov kub nyob ze chav tsev, thiab lwm yam, thiab doping tuaj yeem txo qis theem hloov ntsuas kub. Doping tungsten keeb hauv VO2 zaj duab xis tuaj yeem txo cov theem hloov ntawm cov yeeb yaj kiab mus rau hauv chav tsev sov, yog li tungsten-doped vo2 muaj kev cia siab thov kev cia siab.

Hongwu Nano cov engineers pom tias theem kev hloov pauv ntawm theem ntawm Vanadium Dioxide tuaj yeem kho los ntawm doping, thiab lwm yam. Lub zog doping, tantalum, niobium thiab germanium. Tungsten doping yog suav hais tias yog txoj kev doping zoo tshaj plaws thiab tau siv dav siv los kho theem hloov chaw kub. Doping 1% Tungsten tuaj yeem txo cov theem hloov hloov hloov ntawm Vanadium dioxide zaj duab xis los ntawm 24 ° C.

Cov kev qhia tshwj xeeb ntawm cov ntshiab-theem nano-vanadium dioxide thiab tungsten-doped vanadium uas peb lub tuam txhab tuaj yeem muab los ntawm Tshuag yog raws li hauv qab no:

1. Nano Vanadium Dioxide Vo2, undoped, Theem Ntshiab, Theem Theem Kev Kub yog 68 ℃

2. Vanadium dioxide deped nrog 1% tungsten (w1% -vo2), theem hloov theem hloov yog 43 ℃

3. Vanadium dioxide deped nrog 1.5% tunsten (w1.5% -vo2), theem hloov pauv theem yog 32 ℃

4. Vanadium dioxide deped nrog 2% tungsten (W2% -VO2), qhov hloov theem hloov pauv yog 25 ℃

5. Vanadium dioxide deped nrog 2% tungsten (W2% -VO2), Kev hloov theem hloov pauv yog 20 ℃

Nrhiav rau pem hauv ntej rau yav tom ntej, cov qhov rai ntse nrog tungsten-doped vanadium dioxide tuaj yeem ntsia thoob plaws lub ntiaj teb thiab kev ua haujlwm thawm xyoo.