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Uchi nezvimwe zvinwiwa zvine simba rinopenya zvinoyerera nekukurumidza kupfuura mvura mumapapu ane jira rakaputirwa. Zvakawanikwa zvinoshamisa zvakaitwa naMaja Vuckovac nevamwe vake paAalto University muFinland, avo vakaratidzawo kuti mhedzisiro iyi inopesana nepfungwa inobva mukudzvinyirirwa kwekuyerera kwemukati mukati memadonhwe ane simba rinopenya. Mhedzisiro yavo inopesana zvakananga nedzidziso dziripo dzemafungiro ekuti zvinwiwa zvinoyerera sei mumapapu ane simba rinopisa.
Basa re microfluidics rinosanganisira kudzora kuyerera kwemvura munzvimbo dzakamanikana dze capillaries - kazhinji pakugadzira michina yekushandisa pakurapa. Mvura ine viscosity yakaderera ndiyo yakanakira microfluidics nekuti inoyerera nekukurumidza uye nyore nyore. Mvura yakawanda ine viscosity inogona kushandiswa nekudzifambisa padzvinyiriro yakakwira, asi izvi zvinowedzera kushushikana kwemuchina mu capillary structures dzakapfava - izvo zvinogona kukonzera kukundikana.
Neimwe nzira, kuyerera kwemvura kunogona kukurumidziswa uchishandisa chifukidziro che superhydrophobic chine ma micro- uye nanostructures anosunga ma cushion emhepo. Ma cushion aya anoderedza zvakanyanya nzvimbo yekubatana pakati pemvura nepamusoro, izvo zvinoderedza kukweshana - kuwedzera kuyerera ne65%. Zvisinei, zvichienderana nedzidziso iripo, kuyerera uku kunoramba kuchiderera nekuwedzera kusimba kwemvura.
Chikwata chaVuckovac chakaedza dzidziso iyi nekutarisa madonhwe ane viscosities dzakasiyana-siyana sezvo simba regiravhiti raiadhonza kubva mu capillaries dzakamira dzine superhydrophobic inner coatings. Sezvaanofamba nekumhanya kwakafanana, madonhwe acho anodzvanya mhepo iri pasi pawo, zvichiita kuti pressure gradient ifanane neiri mu piston.
Kunyange zvazvo madonhwe akaratidza hukama hwakasiyana hwaitarisirwa pakati pekupenya uye mwero wekuyerera mumachubhu akavhurika, apo magumo rimwe kana ese akavharirwa, mitemo yacho yakadzoserwa zvachose. Mhedzisiro yacho yakanyanya kuoneka nemadonhwe eglycerol—kunyangwe zvazvo madonhwe matatu ehukuru akasviba kupfuura mvura, akayerera nekukurumidza kupfuura mvura kanopfuura kagumi.
Kuti vaone fizikisi iri shure kwemhedzisiro iyi, timu yaVuckovac yakaisa zvimedu zvinotevedzana mumadonhwe. Kufamba kwezvimedu nekufamba kwenguva kwakaratidza kuyerera kwemukati nekukurumidza mukati medonhwe risina kusimba. Kuyerera uku kunoita kuti mvura ipinde muzvikamu zvidiki uye zvidiki zviri mujira. Izvi zvinoderedza ukobvu hwejira remhepo, zvichidzivirira mweya wakamanikidzwa uri pasi pedonhwe kuti usapfuure nepakati kuti uenzane nekumanikidzwa kwemhepo. Kusiyana neizvi, glycerin haina kuyerera kwemukati kunoonekwa, zvichidzivisa kupinda kwayo mujira. Izvi zvinoguma nejira remhepo rakakora, zvichiita kuti zvive nyore kuti mhepo iri pasi pedonhwe ifambe ichienda kudivi rimwe.
Vachishandisa zvavakaona, timu iyi yakagadzira modhi yehydrodynamic yakagadziridzwa iyo inofanotaura zviri nani kuti madonhwe anofamba sei nepakati pema capillaries ane machira akasiyana-siyana anonyungudutsa mvura. Nekuwedzera kwebasa, zvavakawana zvinogona kutungamira kune nzira itsva dzekugadzira michina ine microfluidic inokwanisa kubata makemikari akaomarara nemishonga.
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