Windows pab ntau npaum li 60% ntawm lub zog poob hauv cov tsev.Nyob rau hauv huab cua kub, lub qhov rais yog rhuab los ntawm sab nraud, radiating thermal zog rau hauv lub tsev.Thaum nws txias sab nraud, lub qhov rais cua sov los ntawm sab hauv, thiab lawv radiate cua sov rau sab nraum ib puag ncig.Cov txheej txheem no hu ua radiative txias.Qhov no txhais tau hais tias qhov rais tsis zoo ua kom lub tsev sov lossis txias li nws xav tau.

Nws puas tuaj yeem tsim lub iav uas tuaj yeem tig los yog tua cov hluav taws xob cua txias ntawm nws tus kheej nyob ntawm nws qhov kub thiab txias?Cov lus teb yog yog.

Txoj cai lij choj Wiedemann-Franz hais tias qhov zoo dua ntawm cov khoom siv hluav taws xob, qhov thermal conductivity zoo dua.Txawm li cas los xij, cov khoom siv vanadium dioxide yog ib qho kev zam, uas tsis ua raws li txoj cai no.

Cov kws tshawb fawb tau ntxiv ib txheej nyias ntawm vanadium dioxide, qhov sib xyaw ua ke uas hloov los ntawm ib qho insulator mus rau ib tus neeg xyuas pib ntawm 68 ° C, mus rau ib sab ntawm lub khob.Vanadium dioxide (VO2)yog cov khoom siv ua haujlwm nrog cov thermally induced theem hloov khoom.Nws morphology tuaj yeem hloov pauv ntawm ib qho insulator thiab hlau.Nws coj raws li ib tug insulator ntawm chav tsev kub thiab raws li ib tug hlau conductor ntawm kub siab tshaj 68 ° C.Qhov no yog vim qhov tseeb tias nws cov qauv atomic tuaj yeem hloov pauv los ntawm chav tsev kub siv lead ua qauv rau cov qauv hlau ntawm qhov kub siab tshaj 68 ° C, thiab qhov kev hloov pauv tshwm sim hauv tsawg dua 1 nanosecond, uas yog qhov zoo rau kev siv hluav taws xob.Cov kev tshawb fawb cuam tshuam tau ua rau ntau tus neeg ntseeg tias vanadium dioxide tuaj yeem dhau los ua cov khoom hloov pauv rau kev lag luam hluav taws xob yav tom ntej.

Cov kws tshawb fawb ntawm ib lub tsev kawm ntawv Swiss tau nce qib kev hloov pauv kub ntawm vanadium dioxide mus rau saum 100 ° C los ntawm kev ntxiv germanium, cov khoom siv hlau tsis tshua muaj, rau cov yeeb yaj kiab vanadium dioxide.Lawv tau ua tiav hauv RF daim ntawv thov, siv vanadium dioxide thiab theem-hloov hloov tshuab los tsim ultra-compact, tunable zaus lim thawj zaug.Hom tshiab lim no yog tshwj xeeb tshaj yog haum rau ntau zaus siv los ntawm qhov chaw sib txuas lus.

Tsis tas li ntawd, lub cev muaj zog ntawm vanadium dioxide, xws li resistivity thiab infrared transmittance, yuav hloov heev thaum lub sij hawm transformation txheej txheem.Txawm li cas los xij, ntau daim ntawv thov ntawm VO2 xav tau qhov kub thiab txias nyob ze ntawm chav tsev kub, xws li: lub qhov rais ntse, infrared detectors, thiab lwm yam., thiab doping tuaj yeem txo qhov kub ntawm cov theem hloov.Doping tungsten keeb nyob rau hauv VO2 zaj duab xis tuaj yeem txo qhov kev hloov pauv ntawm cov yeeb yaj kiab mus rau ib puag ncig ntawm chav tsev kub, yog li tungsten-doped VO2 muaj cov ntawv thov dav dav.

Hongwu Nano cov engineers pom tias cov theem hloov pauv kub ntawm vanadium dioxide tuaj yeem hloov kho los ntawm doping, kev ntxhov siab, lis loj, thiab lwm yam. Cov ntsiab lus doping tuaj yeem yog tungsten, tantalum, niobium thiab germanium.Tungsten doping yog suav tias yog txoj kev doping zoo tshaj plaws thiab tau siv dav los kho cov theem hloov pauv kub.Doping 1% tungsten tuaj yeem txo qhov kev hloov pauv kub ntawm vanadium dioxide zaj duab xis los ntawm 24 ° C.

Cov specifications ntawm ntshiab-theem nano-vanadium dioxide thiab tungsten-doped vanadium dioxide uas peb lub tuam txhab muaj peev xwm muab tau los ntawm Tshuag yog raws li nram no:

1. Nano vanadium dioxide hmoov, undoped, ntshiab theem, theem hloov kub yog 68 ℃

2. Vanadium dioxide doped nrog 1% tungsten (W1% - VO2), lub sijhawm hloov pauv kub yog 43 ℃

3. Vanadium dioxide doped nrog 1.5% tungsten (W1.5% -VO2), theem hloov pauv kub yog 32 ℃

4. Vanadium dioxide doped nrog 2% tungsten (W2% - VO2), lub sijhawm hloov pauv kub yog 25 ℃

5. Vanadium dioxide doped nrog 2% tungsten (W2% - VO2), lub sijhawm hloov pauv kub yog 20 ℃

Saib rau yav tom ntej, cov qhov rais ntse nrog tungsten-doped vanadium dioxide tuaj yeem ntsia tau thoob plaws ntiaj teb thiab ua haujlwm txhua xyoo.