Droplet motion by Leidenfrost phenomenon on Zn plate surfaces with and without ZnO nanorods
نویسندگان
چکیده
Zinc oxide nanorods (ZnO-NR) were prepared on Zn plates with a ratchet structure by hydrothermal processing. Then the Leidenfrost phenomenon of sample was evaluated after coating fluoroalkyl silane. After formation ZnO-NR, temperature decreased approximately 20 °C. The terminal velocity self-propelled droplets depended temperature. dominant mechanism for self-propulsion water without ZnO-NR at 160–200 °C nucleate boiling and resultant volume expansion, but it switched to gravity temperatures higher than 200 Because suppressed adhesion onto wall because appeared be droplet all temperatures, both lower modification plate surface. However, when formed every other ratchet, increased lowered self-propulsion. estimated 160 exceeded that ZnO-NR.
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ژورنال
عنوان ژورنال: Materials Chemistry and Physics
سال: 2021
ISSN: ['0254-0584', '1879-3312']
DOI: https://doi.org/10.1016/j.matchemphys.2021.125123