<Abstract>

We present a novel method to fabricate Zn–Al LDH (layered double hydroxides)

film with 3D flower-like micro-and nanostructure on the aluminum foil.

The wettability of the Zn–Al LDH film can be easily changed from superhydrophilic

to superhydrophobic with a simple chemical modification. The as-prepared

superhydrophobic surfaces have water CAs (contact angles) of 165 ± 2°. In order

to estimate the drag reduction property of the surface with different adhesion

properties, the experimental setup of the liquid/solid friction drag is proposed.

The drag reduction ratio for the as-prepared superhydrophobic sample is 20–30%

at low velocity. Bearing this in mind, we construct superhydrophobic surfaces that

have numerous technical applications in drag reduction field.

<全文連結>