Kev ntxuav tus kheej ntawm Super Hydrophobic Surface

Wettability yog ib qho tseem ceeb feature ntawm cov khoom nto, uas yog txiav txim los ntawm cov tshuaj muaj pes tsawg leeg thiab morphology ntawm nto. Super-hydrophilic thiab super hydrophobic Cov yam ntxwv saum npoo yog cov ntsiab lus tseem ceeb ntawm kev tshawb fawb invasive. Lub superhydrophobic (dej-repellent) nto generally hais txog qhov chaw uas lub kaum sab xis ntawm dej thiab saum npoo yog siab dua 150 degrees. Tias tib neeg paub superhydrophobic nto yog feem ntau los ntawm cov nplooj ntoo - nplooj nplooj nplooj, "tus kheej tu" tshwm sim. Piv txwv li, cov tee dej tuaj yeem dov los yob rau ntawm nplooj nplooj, txawm tias qee cov dej phwj tuaj rau hauv nplooj, nws yuav tsis tawm ntawm cov nplooj. Cov yam ntxwv ntawm cov nplooj ntoo uas tsis muaj xim zoo li no hu ua "kev tu tus kheej" cov nyhuv.

Lotus nyhuv - Super hydrophobic txoj cai

Txawm hais tias tib neeg tau paub ntxov heev ntawm cov nplooj nplooj nplooj "tus kheej tu" cov nyhuv, tab sis tsis tuaj yeem nkag siab txog qhov zais ntawm cov nplooj nplooj nplooj. Txog rau thaum xyoo 1990, ob tus kws tshawb fawb German tau pom thawj zaug nrog lub tshuab ntsuas hluav taws xob hauv tshuab hluav taws xob, lub microstructure ntawm lotus nplooj saum npoo, tias "kev tu tus kheej" cuam tshuam los ntawm micron mastoid thiab lotus nplooj wax rau saum npoo. Tom qab ntawd, Cov kws tshawb fawb tau txheeb xyuas qhov tob ntawm cov nplooj nplooj nplooj micron thiab pom tias muaj cov nanostructures nyob rau hauv cov nplooj nplooj nplooj mastoid, thaum cov qauv ob ntawm micron thiab nano-structure yog lub hauv paus ua rau "kev tu tus kheej" hauv lotus nplooj nto.

Vim li cas qhov " ntxhib" nto tuaj yeem tsim superhydrophobic

Rau cov khoom siv hydrophobic, thaum lub npoo muaj qhov projections me me, qee qhov ntawm cov huab cua yuav "tawm mus" ntawm cov dej thiab cov khoom, ua rau cov tee dej feem ntau ntawm kev sib cuag nrog huab cua, tab sis kev sib cuag ncaj qha nrog cov khoom nto zoo heev. txo. Txij li qhov nro ntawm cov dej ntws hauv cov duab kom lub ntsej muag roughened yog nyob ze rau ntawm kheej kheej, lub kaum sab xis ntawm kev sib cuag yog mus txog 150 degrees, thiab cov tee dej ntawm qhov chaw tuaj yeem yob tawm.

Txawm tias muaj qee yam ntawm cov khoom qias neeg ntawm qhov chaw, lawv yuav dov tawm mus, yog li qhov chaw yuav muaj peev xwm "tu nws tus kheej". Qhov saum npoo no nrog lub kaum sab xis siab dua 150 degrees yog hu ua "super-hydrophobic nto", thiab lub kaum sab xis ntawm cov noob.ral hydrophobic nto tsuas yog ntau dua 90 degrees.

Hauv natural ntiaj teb no, tshwj tsis yog tias cov nplooj nplooj muaj peev xwm "tu nws tus kheej", muaj lwm yam xws li mov, taro nroj tsuag thiab feathers zoo li noog.Qhov tshwj xeeb tseem ceeb ntawm qhov "kev tu tus kheej" no yog ntxiv rau kev tswj xyuas qhov chaw tu , raws li zoo raws li rau kev tiv thaiv ntawm pathogens ntxeem tau. Vim hais tias txawm nrog cov kab mob mus rau nplooj nplooj, nws yuav raug ntxuav tawm. Yog li zoo li no, txawm tias cov paj ntoo loj hlob nyob rau hauv ib puag ncig "qhuav" tsis yooj yim rau mob, yog vim li cas tseem ceeb heev vim tias qhov no muaj peev xwm tu tus kheej.