Thaum Lub Kaum Hlis 15, cov kws tshawb nrhiav ntawm Chalmers University of Technology hauv Sweden tau ua tiav cov ntaub ntawv tshiab uas muaj xws li cov tshuaj, qib siab cell technology thiab hnub ci cell technology. Txoj kev tshawb no tau pom tias yuav ua li cas sib xyaw ntau molecules (txog li yim lub sijhawm) tuaj yeem tsim cov khoom uas ua tau zoo li cov neeg ua haujlwm zoo tshaj plaws.
Iav Ntawm qhov tod tes, crystalline cov ntaub ntawv yog cov khoom siv nrog cov qauv xaj thiab rov ua dua cov qauv.
Cov khoom uas peb feem ntau hu "iav" hauv lub neej txhua hnub yog feem ntau raws li silica, tab sis iav tuaj yeem ua tau ntau cov ntaub ntawv sib txawv. Yog li, cov kws tshawb nrhiav yeej ib txwm xav nrhiav cov hauv kev tshiab, uas yuav ua rau kev txhim kho cov iav tshiab nrog kev txhim kho cov khoom thiab cov ntawv thov tshiab. Cov kev tshawb fawb tshiab tsis ntev los no luam tawm nyob rau hauv cov ntaub ntawv xov xwm science "Science nce qib" sawv cev rau ib kauj ruam tseem ceeb rau kev tshawb fawb.
Tam sim no, los ntawm tsuas yog sib xyaw ntau hom lwg me me, peb mam li nco dheev qhib lub peev xwm los tsim cov khoom tshiab thiab cov iav zoo dua. Cov uas kawm organic molecules paub tias kev siv sib xyaw ntawm ob lossis peb tuaj yeem ua tiav cov txiaj ntsig ntau ntxiv, "Cov Kev Tshawb Fawb Cov Lus Tshawb Fawb. Professor Christian Müller los ntawm Department of Chemistry thiab cov tshuaj enressering ntawm Ulms University hais.
Cov txiaj ntsig zoo tshaj plaws rau tej iav ua cov khoom siv
Thaum cov kua cua txias yam tsis muaj crystallization, iav yog tsim, tus txheej txheem hu ua vitrification. Kev siv ntawm kev sib xyaw ntawm ob lossis peb molecules los txhawb lub khob tsim yog lub tswv yim paub tab. Txawm li cas los xij, cov nyhuv ntawm kev sib xyaw ntau ntawm cov lwg me me ntawm lub peev xwm los tsim cov iav tau txais kev mloog me.
Cov kws tshawb nrhiav tau sim sib xyaw ntawm ntau li yim yam sib txawv, uas ib leeg muaj cov yam ntxwv siab - cov xeeb ceem muaj feem cuam tshuam nrog cov khoom siv cov khoom siv. Tab sis tov ntau cov lwg me ua ke ua rau muaj kev txo qis rau hauv brittleness thiab ua ib khob muaj zog heev nrog ultra-tsawg brittleness.
"Tus Brittleness ntawm cov iav peb tau ua hauv peb cov kev tshawb fawb yog tsawg heev, uas sawv cev rau qhov muaj peev xwm zoo tshaj plaws. Peb tau ntsuas tsis tsuas yog ib qho khoom siv organic tab sis kuj yog cov ntaub ntawv polymers thiab inorganic cov ntaub ntawv (xws li ntau dua li ntau hlau me me). Cov txiaj ntsig tau zoo dua li iav dog dig. Lub iav sib nrig muaj peev xwm ntawm lub qhov rai iav yog ib qho ntawm cov iav zoo tshaj plaws uas peb paub, "
Txuas ntxiv khoom lag luam lub neej thiab txuag cov khoom siv
Cov ntawv thov tseem ceeb rau cov khoom muaj tshuab hluav taws xob muaj zog xws li OLED cov ntxaij thiab txuas ntxiv ua hluav taws xob thev naus laus zis xws li cov organic solar.
"Oleds yog tsim ntawm iav txheej ntawm lub teeb-emitting organic molecules. Yog tias lawv ruaj khov dua, nws yuav ua rau lub sijhawm ruaj khov ntawm OLED thiab thaum kawg lub siab ntawm cov zaub, "piav qhia Sandra Holra Holrark.
Lwm daim ntawv thov uas yuav tau txais txiaj ntsig los ntawm cov iav ruaj khov dua yog tshuaj. Amorphous cov tshuaj yaj tau sai dua sai dua, uas pab kom nrawm dua cov tshuaj nquag thaum noj. Yog li ntawd, ntau yam tshuaj siv cov qauv tshuaj ua cov tshuaj. Txog tshuaj, nws yog qhov tseem ceeb heev uas cov khoom siv vitreous tsis crystallize sijhawm. Qhov ntau ruaj khov lub khob tshuaj, lub neej nrawm ntev dua ntawm cov tshuaj.
"Nrog cov iav ruaj khov lossis cov khoom tshiab rau cov khoom siv tshiab, peb tuaj yeem txuas ntxiv lub neej ntawm ntau cov khoom lag luam, yog li txuag cov peev txheej thiab kev lag luam, Christian müller tau hais.
"Vitrification ntawm Xinyuanerylene sib tov nrog ultra-tsawg brittleness" tau luam tawm nyob rau hauv cov ntaub ntawv xov xwm science "science nce qib".
Lub Sijhawm Post: Dec-06-2021