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Mechanics of Composite Materials

, Volume 48, Issue 2, pp 229–234 | Cite as

Controllable wettability of paraffin-anodic aluminum oxide composite surface with a roughness tunable by thermal expansion

  • Ch. Lee
  • S. Lee
  • W. Hwang
Article
  • 127 Downloads

The roughness of a composite surface, one of factors determining the contact angle (CA), is controlled by the difference in the thermal expansion of constituents of the composite. The CA on a composite surface can be calculated by using an equation derived from Cassie and Wenzel relations. A composite of paraffin and anodic aluminum oxide was fabricated to verify this equation. The CA on this surface changed from 63 to 113° as the temperature increased from 1 to 40°C.

Keywords

composite Cassie relation anodization wetting 

Notes

Acknowledgments

This work was supported by the National Research Foundation of Korea (NRF) grant funded by Korea government (MEST) (No. 2010-0018457).

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Copyright information

© Springer Science+Business Media, Inc. 2012

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringPohang University of Science and Technology (POSTECH)PohangRepublic of Korea

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