Ndatenda nekusaina kuPhysical World Kana iwe uchida kushandura ruzivo rwako chero nguva, ndapota shanyira account yangu
Uchi nezvimwe zvinwiwa zvine viscous zvinoyerera nekukurumidza kupfuura mvura mune zvakavharwa capillaries.Inoshamisa yakawanikwa yakaitwa naMaja Vuckovac nevamwe vaaishanda navo paAalto University kuFinland, avo vakaratidzawo kuti izvi zvinopesana nezvinokonzeresa zvinobva mukudzvanyirirwa kwekuyerera kwemukati mukati memamwe madonhwe anoonekwa.
Munda we microfluidics unosanganisira kudzora kuyerera kwezvinwiwa kuburikidza neakasimba akavharirwa nzvimbo dzecapillaries-kazhinji yekugadzira michina yezvishandiso zvekurapa.Low viscosity fluids yakanakira microfluidics nekuti inoyerera nekukurumidza uye pasina simba.More viscous fluids inogona kushandiswa nekudzityaira kune yakakwira kudzvinyirirwa, asi izvi zvinowedzera mechanical stress in the delicate structure to lead capilla.
Zvimwewo, kuyerera kunogona kukurumidza kukurumidza kushandisa superhydrophobic coating iyo ine micro- uye nanostructures iyo inoteya macushion emhepo.Izvi zviputi zvinoderedza zvakanyanya nzvimbo yekubatana pakati pemvura uye pamusoro, iyo inoderedza kupesana - kuwedzera kuyerera ne65%.
Chikwata cheVuckovac chakaedza dzidziso iyi kuburikidza nekutarisa madonhwe emhando dzakasiyana-siyana dze viscosity sezvo simba rinokwevera pasi rakaadhonza kubva kune vertical capillaries ane superhydrophobic mukati coatings.Sezvo ivo vachifamba nekukurumidza, madonhwe anomanikidza mhepo iri pasi pawo, achigadzira kutsika kwemhepo kunofananidzwa neiyo mupiston.
Kunyange zvazvo madonhwe airatidza hukama hunotarisirwa hunopesana pakati peviscosity uye kuyerera kwehuwandu mumachubhu akazaruka, apo imwe kana migumo miviri yakavharwa, mitemo yakashandurwa zvachose. Mhedzisiro yacho yainyanya kutaurwa nemadonhwe e-glycerol-kunyange zvazvo 3 mirairo yehukuru yakawanda kupfuura mvura, yakayerera kupfuura nguva ye10 nokukurumidza kupfuura mvura.
Kuti rifukure fizikisi iri shure kwechiitiko ichi, chikwata cheVuckovac chakaunza tracer particles mumadonhwe.Kufamba kwezvikamu nekufamba kwenguva kwakaratidza kukurumidza kuyerera kwemukati mukati memvura shoma shoma.Idzi dzinoyerera dzinoita kuti mvura ipinde mukati me micro- uye nano-scale structures in the coating.Izvi zvinoderedza kukora kwemhepo cushion, kudzivirira kudzikama kwemhepo, kudzivirira kuderera kwemhepo kubva kumhepo inodonhedza. glycerin inenge isinganzwisisi kuyerera kwemukati, ichidzivisa kupinda kwayo mukati mekuputira.Izvi zvinoguma nemhepo yakanyanyisa, zvichiita kuti zvive nyore kuti mhepo iri pasi pedonho iende kune rumwe rutivi.
Vachishandisa zvavanoona, boka racho rakagadzira yakagadziridzwa hydrodynamic modhi iyo inofanotaura zviri nani kuti madonhwe anofamba sei nema capillaries ane akasiyana superhydrophobic coatings.Nekuwedzera kushanda, zvavakawana zvinogona kutungamirira kunzira itsva dzekugadzira michina yemicrofluidic inokwanisa kubata makemikari akaoma uye zvinodhaka.
Physics World inomiririra chikamu chakakosha cheIOP Publishing's mission yekutaurirana tsvakiridzo yemhando yepamusoro uye hutsva kune vateereri vakakura kwazvo.Saiti iyi chikamu cheFizikisi World portfolio, inopa muunganidzwa wepamhepo, dijitari uye kudhinda ruzivo ruzivo kunharaunda yepasi rose yesainzi.