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Anomalous wetting on a superhydrophobic graphite surface
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10.1063/1.3697831
/content/aip/journal/apl/100/12/10.1063/1.3697831
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/12/10.1063/1.3697831
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Water contact angles and SEM images of polished graphite sheet (a), (b); hydrophobic graphite surface obtained by peeling (c), (d); and superhydrophobic graphite surface by further ultrasonication (e),(f).

Image of FIG. 2.
FIG. 2.

Residual and newly attached air bubbles on polished graphite surface (a), (b); hydrophobic graphite surface obtained by peeling (c), (d); and superhydrophobic graphite surface by further ultrasonication (e), (f).

Image of FIG. 3.
FIG. 3.

Convective Ostwald ripening on a superhydrophobic graphite surface. (a) Growth of an air bubble by absorbing tiny bubbles away from it. (b) Shrinkage of an air bubble by suction through a syringe away from it. Contact line pinning is clearly observed because of constant base diameter (BD).

Image of FIG. 4.
FIG. 4.

The extent of contact angle hysteresis implying the adhesive performance is demonstrated by a drop clinging to the vertical wall, including (a) polished, (b) hydrophobic, and (c) superhydrophobic surfaces. The clinging drop with the maximum volume before sliding is given.

Image of FIG. 5.
FIG. 5.

The variation of the advancing and receding contact angles with the contact time on a superhydrophobic graphite surface. The dynamic behavior of reveals the aging effect of the adhesive force.

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/content/aip/journal/apl/100/12/10.1063/1.3697831
2012-03-22
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Anomalous wetting on a superhydrophobic graphite surface
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/12/10.1063/1.3697831
10.1063/1.3697831
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