Amawindi anikela ngamaphesenti angama-60 wamandla alahleka ezakhiweni.Esikhathini esishisayo, amafasitela ashiswa ngaphandle, akhiphe amandla okushisa esakhiweni.Uma kubanda ngaphandle, amafasitela ayashisa ngaphakathi, futhi akhipha ukushisa endaweni engaphandle.Le nqubo ibizwa ngokuthi ukupholisa ngemisebe.Lokhu kusho ukuthi amafasitela awasebenzi kahle ekugcineni isakhiwo sifudumele noma sipholile njengoba kudingeka.

Kungenzeka yini ukwakha ingilazi ekwazi ukuvula noma ukuvala lo mphumela wokupholisa we-radiative ngokwayo kuye ngezinga lokushisa layo?Impendulo ithi yebo.

Umthetho we-Wiedemann-Franz uthi okungcono ukuqhutshwa kukagesi kwezinto ezibonakalayo, kungcono ukuqhutshwa kwe-thermal.Kodwa-ke, impahla ye-vanadium dioxide ihlukile, engawulaleli lo mthetho.

Abacwaningi bangeze ungqimba oluncane lwe-vanadium dioxide, inhlanganisela eguqukayo isuka ku-insulator iye ku-conductor cishe ngo-68 ° C, iye ohlangothini olulodwa lwengilazi.I-Vanadium dioxide (VO2)iwumsebenzi osebenzayo onezinto ezijwayelekile zokushintsha kwesigaba esibangelwa ukushisa.I-morphology yayo ingaguqulwa phakathi kwe-insulator nensimbi.Isebenza njengesivikelo ekushiseni kwegumbi nanjengekhondatha yensimbi emazingeni okushisa angaphezu kuka-68°C.Lokhu kungenxa yokuthi isakhiwo sayo se-athomu singashintshwa kusuka ekamelweni lokushisa kwekristalu isakhiwo sibe isakhiwo sensimbi emazingeni okushisa angaphezu kuka-68 ° C, futhi ukuguqulwa kwenzeka ngaphansi kwe-nanosecond engu-1, okuyinzuzo yezinhlelo zokusebenza ze-elektroniki.Ucwaningo oluhlobene selwenze abantu abaningi bakholelwa ukuthi i-vanadium dioxide ingaba yinto eguqukayo embonini yezogesi yesikhathi esizayo.

Abacwaningi enyuvesi yaseSwitzerland bandise izinga lokushisa lokushintsha kwesigaba se-vanadium dioxide laba ngaphezu kuka-100°C ngokwengeza i-germanium, into eyinsimbi eyivelakancane, kufilimu ye-vanadium dioxide.Benze intuthuko ezinhlelweni ze-RF, besebenzisa i-vanadium dioxide kanye nobuchwepheshe bokushintshwa kwesigaba ukuze bakhe izihlungi zefrikhwensi ezicwebezelayo okokuqala ngqa.Lolu hlobo olusha lwesihlungi lufaneleka ngokukhethekile ububanzi befrikhwensi esetshenziswa izinhlelo zokuxhumana zasemkhathini.

Ngaphezu kwalokho, izinto ezibonakalayo ze-vanadium dioxide, njenge-resistivity kanye ne-infrared transmittance, zizoshintsha kakhulu phakathi nenqubo yokuguqulwa.Kodwa-ke, izinhlelo eziningi ze-VO2 zidinga izinga lokushisa eliseduze negumbi lokushisa, njengalokhu: amafasitela ahlakaniphile, izitholi ze-infrared, njll., kanye ne-doping kunganciphisa ngempumelelo izinga lokushisa lokushintsha kwesigaba.Isici se-doping tungsten kwifilimu ye-VO2 singanciphisa izinga lokushisa lokushintsha kwesigaba sefilimu lilingane nezinga lokushisa legumbi, ngakho-ke i-tungsten-doped VO2 inamathemba okusebenza abanzi.

Onjiniyela be-Hongwu Nano bathola ukuthi izinga lokushisa lokushintsha kwesigaba se-vanadium dioxide lingalungiswa nge-doping, ukucindezeleka, usayizi wokusanhlamvu, njll. Izakhi ze-doping zingaba i-tungsten, i-tantalum, i-niobium ne-germanium.I-Tungsten doping ithathwa njengendlela ephumelela kakhulu ye-doping futhi isetshenziswa kabanzi ukulungisa izinga lokushisa lokushintsha kwesigaba.I-Doping 1% ye-tungsten inganciphisa izinga lokushisa lokushintsha kwesigaba samafilimu e-vanadium dioxide ngo-24 °C.

Ukucaciswa kwe-pure-phase nano-vanadium dioxide kanye ne-tungsten-doped vanadium dioxide inkampani yethu engayinikeza esitokweni imi kanje:

1. I-Nano vanadium dioxide powder, engavuliwe, isigaba esihlanzekile, izinga lokushisa lokushintsha kwesigaba lingu-68℃

2. I-Vanadium dioxide ehlanganiswe ne-1% tungsten (W1% -VO2), izinga lokushisa lokushintsha kwesigaba lingu-43℃

3. I-Vanadium dioxide ehlanganiswe ne-1.5% tungsten (W1.5% -VO2), izinga lokushisa lokushintsha kwesigaba ngu-32℃

4. I-Vanadium dioxide efakwe u-2% we-tungsten (W2% -VO2), izinga lokushisa lokushintsha kwesigaba ngu-25℃

5. I-Vanadium dioxide efakwe u-2% we-tungsten (W2% -VO2), izinga lokushisa lokushintsha kwesigaba ngu-20℃

Uma sibheke phambili esikhathini esizayo esiseduze, lawa mawindi ahlakaniphile ane-tungsten-doped vanadium dioxide angafakwa emhlabeni wonke futhi asebenze unyaka wonke.