Mahalo iā ʻoe no kou kau inoa ʻana no Physical World Inā makemake ʻoe e hoʻololi i kāu kikoʻī i kēlā me kēia manawa, e ʻoluʻolu e kipa i kaʻu moʻokāki
ʻOi aku ka wikiwiki o ka kahe ʻana o ka meli a me nā wai ʻē aʻe ma mua o ka wai i loko o nā capillaries i uhi ʻia. ʻO ka ʻike kahaha i hana ʻia e Maja Vuckovac a me nā hoa hana ma ke Kulanui ʻo Aalto ma Finland, nāna i hōʻike i kēia hopena counterintuitive mai ka hoʻopaʻa ʻana i ka kahe kūloko i loko o nā droplets viscous.
ʻO ke kahua o ka microfluidics e pili ana i ka hoʻomalu ʻana i ke kahe o nā wai ma nā wahi paʻa paʻa o nā capillaries-maʻamau no ka hana ʻana i nā mea hana no nā noi olakino.
ʻO kahi koho, hiki ke hoʻolōʻihi ʻia ke kahe me ka hoʻohana ʻana i kahi uhi superhydrophobic i loaʻa i nā micro- a me nā nanostructures e hoʻopaʻa i nā cushions ea. ʻO kēia mau cushions e hoʻemi nui i ka wahi pili ma waena o ka wai a me ka ʻili, kahi e hoʻemi ai i ka friction - hoʻonui i ke kahe e 65%.
Ua hoʻāʻo ka hui o Vuckovac i kēia kumumanaʻo ma ka nānā ʻana i nā droplets o nā viscosities like ʻole i ka huki ʻana o ka umekaumaha iā lākou mai nā capillaries kūpaʻa me nā uhi o loko superhydrophobic. I ko lākou hele ʻana me ka wikiwiki mau, ʻo nā droplets e hoʻoemi i ka ea ma lalo o lākou, e hana ana i kahi kaomi kaomi e like me kēlā i loko o ka piston.
ʻOiai ua hōʻike nā droplets i ka pilina inverse i manaʻo ʻia ma waena o ka viscosity a me ke kahe kahe ʻana i nā paipu hāmama, i ka wā i hoʻopaʻa ʻia ai kekahi a i ʻole nā ​​ʻaoʻao ʻelua, ua hoʻohuli loa ʻia nā lula.
No ka wehe ʻana i ka physics ma hope o kēia hopena, ua hoʻokomo ka hui o Vuckovac i nā ʻāpana tracer i loko o nā droplets. The motion of the particles over time revealed a fast internal flow within the less viscous droplet.These flows cause the fluid in in the micro- and nano-scale structures in the coating. ʻokoʻa, glycerin aneane ʻaʻole hiki ke ʻike i ke kahe o loko, e kāohi ana i kona komo ʻana i loko o ka uhi.
Ke hoʻohana nei i kā lākou nānā ʻana, ua hoʻomohala ka hui i kahi hiʻohiʻona hydrodynamic hou e wānana maikaʻi i ka neʻe ʻana o nā droplets ma nā capillaries me nā uhi superhydrophobic like ʻole.
ʻO Physics World kahi ʻāpana koʻikoʻi o ka hana a IOP Publishing e kamaʻilio i ka noiʻi a me ka hana hou o ka honua i ka lehulehu ākea.