LED ua ib lub sijhawm tshiab ntawm cov chaw tshiab, nrog ntau cov teeb pom kev zoo tsis tuaj yeem sib piv cov txiaj ntsim, tiam sis tseem rau lub teeb pom kev zoo tau coj mus rau qhov kawg. Nrog txoj kev loj hlob sai ntawm LED technology, LED tau raug siv rau cov teb tshiab.
US-tsim ib leeg-chip integrated tri-xim LED yav tom ntej no yuav muaj ntau xim ua ke
Raws li cov roj nitrate technology thiab cov chaw tsim khoom lag luam, cov qauv siv hluav taws xob muaj peev xwm muab tau cov qauv siv rau cov micro-zaub.
Raws li hom kev tsim qauv ntawm kev siv tshuaj yaj yeeb indium nitrium (InGaN) Muaj ntau lub tsev me me, University of Michigan tau tsim muaj teeb ci nrog cov teeb liab kub-ntsuab-ntsuab-ntsuab. Lub lim dej engineering yog ua tiav los ntawm etching txawv diameters ntawm nano-kab.
Cov neeg tshawb xyuas vam tias yuav tsim tau lub liab-ntsuab-xiav coj yav tom ntej nrog 635nm luminous quantum zoo, muab ib txoj hau kev rau micro-zaub raws li qhov teeb meem ntawm pixel. Lwm daim ntawv muaj peev xwm muaj xws li lub teeb taws, biosensors thiab noob caj noob ces.
Ntxiv nrog rau kev txhawb nqa los ntawm National Science Foundation (NSF), Samsung txhawb kev tsim thiab cuab yeej tsim. Cov neeg tshawb xyuas vam tias yuav tsim ib qho kev sib txuam theem sib txig sib txig ntawm cov tub ntxhais ntse raws li kev tsim khoom lag luam.
Ua ntej txoj kev loj hlob ntawm ultra-pure ntsuab coj los ntawm kev soj ntsuam ntawm
Cov kws tshawb fawb nyob rau hauv Kev Xiam Tshuaj Engineering Cheeb Tsam ntawm Tsoom Fwv Teb Chaws Lub Koom Txoos ntawm Technology hauv Zurich nyuam qhuav yees ua lub teeb, nkhaus teeb ci-emitting (LED) uas tawm lub teeb ntshiab heev uas cov neeg tshawb xyuas siv los qhia peb tsab ntawv "ETH". Professor Chih-jenshih, tus thawj coj ntawm pab pawg neeg tshawb fawb, tau zoo siab nrog nws txoj kev sib tw: "Yog li ntawd, tsis muaj leej twg tau ua tiav qhov tsim kom muaj lub teeb ntsuab li peb lub." "
Prof Shih hais tias txoj kev tshawb no yuav pab tau ntxiv rau tiam tom ntej ntawm ultra-high-resolution rau TVs thiab smartphones. Lub tshuab ntsuas hluav taws xob yuav tsum muaj peev xwm tsim ultra ntshiab liab, xiav, thiab lub teeb ntsuab thiaj li hais tias cov zaub yuav ua kom pom tseeb, muaj cov ntsiab lus ntxiv thiab ntau ntau xim los kho cov duab. Ua ntej cov kev tshawb fawb tau los ua kom purity cov xim liab thiab xiav, tiam sis lub ntshiab xim ntsuab lub teeb pom kev zoo li tau ntsib ib qho kev sib tw, nws nyuaj rau kev ua hauj lwm kev kovyeej, vim yog qhov kev siv qhov muag pom. Muab piv rau lub teeb liab thiab xiav, nws tsis yooj yim rau qhov muag liab qab kom paub qhov txawv ntawm cov kev hloov hauv ntsuab tones, uas ua rau lub super ntshiab ntsuab nyob rau hauv cov khoom muag yuav ua heev complex.
Prof Shih kuj tau taw qhia tias lawv tau tsim ib lub teeb nyias, yoojyim rau lub teeb-emitting diode uas tuaj yeem siv los tawm ntawm lub teeb ntsuab ntsuab ntawm chav tsev sov. "Vim hais tias peb cov technology technology tsis tau qhov kub thiab txias, nws qhib rau cov sijhawm rau cov yooj yim, qis-nqi tsim ntawm yav tom ntej Ultra ntshiab ntsuab teeb-emitting diodes," nws said. "Cov pab pawg siv siv cov duab pleev kom pom cov teeb hluav taws xob ua teeb ci, thiab lub thickness ntawm cov khoom perovskite hauv LED yog tsawg dua 4.8 nm," nws hais. Thiab cov khoom siv LED yuav ua tau zoo ib yam li daim ntawv nyom, thiaj li hais tias nws tuaj yeem ua tiav ntim rau qhov ntim ntawm cov txheej txheem ceev ceev, tsis tsuas yog ua kom zoo dua qub, tiam sis tseem txo cov nqi. Tab sis qhov no ultra ntshiab ntsuab yuav siv sij hawm qee lub sij hawm ua ntej nws muab tso rau hauv kev siv.
Coj coj zoo hloov rau kev lag luam uas kho qhov muag
Hauv tshuab raj, lub teeb ci uas tau thov yog quartz-halogen incandescent teeb, LED yog tam sim no nkag mus rau lub tshuab, vim hais tias qhov chaw halogen feem ntau xav tau dissipation 50w-100w. Txawm li cas los xij, nws yuav pom tau hais tias lub halogen qhov chaw tseem yog ib qho tseem ceeb heev, lawv yog cov dub tseem ceeb heev rau lub tshuab hluav taws xob.
Qhov no txhais tau hais tias lawv tsim nrawm spectra, yam tsis tau tsa cov cheeb tsam, yog li ntawd pom muaj xim pom tau thiab ib qho xim pom tau muab cais los ntawm optical lim.
"Qhov zoo tshaj ntawm halogen yog tias nws yog ib qho chaw zoo dav spectrum lub teeb," said Clivebeech, tus thawj coj ntawm Plessey, tus kws tsim khoom siv British. Cov spectrum no zoo heev thiab xim zoo heev. "
Thawj qhov teeb meem nrog halogen yog qhov zoo ntawm kev tiv thaiv tus qauv ntawm kev ua kom sov. Beech hais tias: "Nws muaj ib lub siab kub ntawm infra-liab, uas yog teeb meem rau cov ntaub so ntswg los yog organic khoom, yog li koj yuav tsum tau lim nws tawm." "
Cov teebmeem no thaiv cov txheej txheem no vim tias tus qauv xiav tus tub ntxhais ntxiv thiab phosphor tshuab tsis tsim IR. "Feem ntau [LED tuam txhab] yuav simulate blackbody emission spectra," said Plessey optics designer Samirmezouari. Tab sis qhov kev sib tw yog kom tau qhov zoo tshaj plaws ua tau zoo. "
Teeb pom kev zoo tshiab! Tshiab carbon nanotubes yarn yuav tsum stretched mus rau lub teeb lub LED.
Hauv ntej, koj nqa ib lub xov paj thiab ncab nws, thiab nws ua rau hluav taws xob. Xaws lawv rau hauv ib lub tsho uas tsis tas siv lub hwj chim, thiab ib tus neeg ua pa tsis ua hauj lwm yuav tsim hluav taws xob. University of Texas ntawm Dallas, tau hais nyob rau hauv kev sib tham tsis ntev los no luam tawm nyob rau hauv phau ntawv journal Science.
Daim iav, hu ua Twistron, yog kis ntawm cov nanotubes ntau yam, nrog cov pa roj carbon atom nanotube 10,000 zaug dua li ntawm lub taub ntawm ib tug tib neeg cov plaub hau. Thiaj li yuav ua rau cov iav yooj yim ywj siab, cov neeg tshawb xyuas tsis tu ncua kom txhim kho txoj kev sib tw kom tsim tau cov qauv zoo sib xws.
"Cov iav no yeej tseem ceeb heev uas yog ib qho super capacitor, tab sis lawv tsis tas yuav tsum tau rov qab siv zog dua." "Li Li Na ntawm lub koom haum Nano Vim tias cov pa roj carbon nanotubes sib txawv ntawm cov tshuaj muaj peev xwm ntawm cov kua roj ntsha, ntawm ib feem ntawm cov nqi yog thaum cov iav raug raus hauv lub tshuab ntshiab. txo, tus nqi yog nyob sib ze, thiab qhov hluav taws xob tau los ntawm tus nqi nce, yog li tau hluav taws xob.
"Thaum ncav ntawm 30 zaug ib pliag, cov xov kab yuav tsim tau lub zog ntawm 250 watts / kg." Ib tug xov uas luj tsawg dua tus yoov, thiab txhua zaus nws ncav us txog, nws tuaj yeem taws teeb. ", ib tug ntawm cov sau phau ntawv ntawm lub koom haum Nanotechnology, tau hais tias," piv nrog lwm tus uas tsis muaj zog-faus fab fibers, qhov hnyav ntawm Twistron yarn uas ua los ntawm lub hwj chim yuav raug nce los ntawm ntau tshaj ib puas npaug.
Tam sim no, feem tsim daim ntawv thov ntawm cov nanotube yarns yog muab lub hwj chim rau lub sensor los yog kev sib txuas lus IoT. "Raws li peb cov hluav taws xob nruab nrab ntawm qhov nruab nrab, tsuas yog 31 mg ntawm cov xov paj tau txuas nrog IoT nyob rau hauv ib lub vojvoog ntawm 100 meters, xa 2000-byte pob ntawv txhua 10 feeb." "
