Figure 4.

Contact angle of water droplets on various HMDS-modified alumina surfaces. (a) three times (4-h) HMDS modified thin film alumina surface, (b) one time (4-h) HMDS-modified nanoporous alumina surface, (c) three times (4-h) HMDS-modified nanoporous alumina surface, (d) one time (9-h) HMDS-modified nanoporous alumina surface.

Tasaltin et al. Nanoscale Research Letters 2011 6:487   doi:10.1186/1556-276X-6-487
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