Water droplet bouncing and superhydrophobicity induced by multiscale hierarchical nanostructures.
ACS Nano
; 6(9): 7656-64, 2012 Sep 25.
Article
in En
| MEDLINE
| ID: mdl-22928700
ABSTRACT
Superhydrophobicity of multiscale hierarchical structures and bouncing phenomenon of a water droplet on the superhydrophobic surface were studied. The multiscale hierarchical structures of carbon nanotube/ZnO and ZnO/carbon nanofiber were produced by the hydrothermal method. The multiscale hierarchical structure showed superhydrophobicity with a static contact angle (CA) larger than 160° due to increased air pockets in the Cassie-Baxter state. The water bouncing effect observed on the multiscale hierarchical nanostructure was explained by the free energy barrier (FEB) analysis and finite element simulation. The multiscale hierarchical nanostructure showed low FEBs which provoke high CA and bouncing phenomenon due to small energy dissipation toward receding and advancing directions.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Zinc Oxide
/
Water
/
Crystallization
/
Nanotubes, Carbon
Language:
En
Journal:
ACS Nano
Year:
2012
Document type:
Article