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Air trapped nanocavity induced superhydrophobicity on GaN microbelt
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10.1063/1.3541877
/content/aip/journal/apl/98/4/10.1063/1.3541877
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/4/10.1063/1.3541877
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Optical microscopic image of free standing GaN microbelts. (b) FESEM image of a single microbelt. Inset pictures are the nanometer-sizes surface protrusions at different magnification and tilt of the microbelts.

Image of FIG. 2.
FIG. 2.

Contact angle measurements (a) GaN epitaxial thin film. (b) Top view of a water drop on a single belt. (c) Contact angle of the liquid drop on the single microbelt.

Image of FIG. 3.
FIG. 3.

Image analysis of microbelt surface (a) 3D surface plot of the typical microbelt, indicating the presence of nanocavities and (b) The shape of the meniscus at the triple contact point within the sinusoidal surface.

Image of FIG. 4.
FIG. 4.

(a) Shape of the meniscus formed in the vicinity of nanocavity at different ratios, (b) The macroscopic contact angle predicted by the Cassie–Baxter model as a function of the triple-point locations , calculated for local contact angle .

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/content/aip/journal/apl/98/4/10.1063/1.3541877
2011-01-26
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Air trapped nanocavity induced superhydrophobicity on GaN microbelt
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/4/10.1063/1.3541877
10.1063/1.3541877
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