Saamaynta is-nadiifinta ee dusha sare ee Hydrophobic

Qoyaanka waa muuqaal muhiim ah oo ka mid ah dusha adag, kaas oo lagu go'aamiyo isku-dhafka kiimikada iyo qaab-dhismeedka dusha sare. Super-hydrophilic iyo super hydrophobic Tilmaamaha dusha sare ayaa ah waxyaabaha ugu muhiimsan ee daraasadaha duullaanka ah. Hidde-sidayaasha dusha sare ee superhydrophobic (biyo-celinta).rally waxa ay tilmaamaysaa oogada in xagal xidhiidhka u dhexeeya biyaha iyo korka uu ka weyn yahay 150 darajo. Dadku waxay og yihiin in dusha sare ee superhydrophobic ay inta badan ka timid caleemaha dhirta - dusha caleenta lotus, ifafaale "is-nadiifinta". Tusaale ahaan, dhibcaha biyuhu waxay ku soo rogi karaan dusha caleenta nacnaca, xitaa haddii qaar ka mid ah biyaha wasakhda ahi ay ku shubaan caleenta, kama tegi doonto wasakh caleemaha. Calaamadaha caleenta nacnaca ee aan wasakhda lahayn ayaa loo yaqaan saamaynta "is-nadiifinta".

Saamaynta Lotus - Super hydrophobic mabda'a

Inkasta oo dadku ay hore u ogaayeen dusha caleenta nacnaca saamaynta "is-nadiifinta", laakiin way awoodi waayeen inay fahmaan sirta caleenta nacnaca. Ilaa 1990-meeyadii, laba saynisyahano Jarmal ah ayaa markii ugu horreysay ku arkay mikroskoob elektaroonig ah, qaab-dhismeed yar oo dusha caleenta lotus-ka ah, in saamaynta "is-nadiifinta" ay sababto micron mastoid iyo caleen nacnac ah oo dusha sare ah. Intaa ka dib, Saynis yahanadu waxay si qoto dheer u falanqeeyeen dusha sare ee qaab dhismeedka micron caleen lotus waxayna ogaadeen in ay jiraan nanostructures ku jira mastoid dusha caleen nacnac ah, halka qaabkan dual ee micron iyo nano-qaab-dhismeedka uu yahay sababaha hoose ee "is-nadiifinta" dusha caleen badan.

Waa maxay sababta dusha sare ee "qalafsan" ay u soo saari karto superhydrophobic

Dusha adag ee hydrophobic, marka dusha sare leeyahay saadaasha yaryar, hawadu qaar ka mid ah waxay noqon doontaa "ka baxsan" inta u dhaxaysa biyaha iyo sagxadaha adag, taasoo keenta dhibco biyo ah inta badan xidhiidhka hawada, laakiin xidhiidhka tooska ah ee dusha adag si weyn hoos u dhac Tan iyo markii xiisadda dusha sare ee dhibcaha biyaha qaabaysan si ay dusha sare ee qallafsan ay u dhowdahay spherical, xagasha xiriirku waa ilaa 150 darajo, dhibcaha biyuhuna waxay noqon karaan kuwo xor ah inay rogaan.

Xataa iyada oo qaar ka mid ah walxaha wasakhda ah ee dusha sare ku yaal, waxay noqon doonaan kuwo rogrogaya dhibco, sidaas darteed dusha sare wuxuu yeelan doonaa awood "is-nadiifin". Oogadan leh xagal xidhiidhineed oo ka wayn 150 darajo waxa loo yaqaan "super-hydrophobic surface", iyo xagal xidhiidhka hiddasidaharal dusha sare ee hydrophobic ayaa ka weyn kaliya 90 darajo.

In natural adduunka, marka laga reebo in caleenta nacnaca ay leedahay awood "is-nadiifin", waxaa jira kuwo kale sida bariiska, dhirta tarugu iyo baalasha sida shimbiraha. , iyo sidoo kale ka-hortagga duullaanka cudur-sidaha. Sababtoo ah xitaa cudurkeenaha dusha caleenta, waa la dhaqi doonaa. Sidaas oo kale, xitaa geedka lotus ee ku koraya deegaanka "wasakh" ma fududa in lagu bukoodo, sabab aad u muhiim ah ayaa ah sababtoo ah awooddan is-nadiifinta.