Nanomechanical and surface behavior of polydimethylsiloxane-filled nanoporous anodic alumina
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In this article, the mechanical and wetting behavior of anodic aluminum oxide (AAO) and nanoporous-filled AAO were investigated using nanoindentation and contact angle measurements. The results showed that the nanoporous AAO was hydrophobic with a contact angle of 105°. The polymer filling affected the surface property and reduced the contact angle to 84°. The effects of the nanoporous filling on the Young’s modulus and the hardness are investigated and discussed. A three-dimensional finite element model was also successfully developed to understand the nanoindentation-induced mechanism. A maximum von Mises stress of 1058 MPa occurred beneath the indenter.
KeywordsContact Angle PDMS Anodic Aluminum Oxide Indentation Load Wetting Behavior
This work was supported in part by the National Science Council of Taiwan under Grant No. NSC95-2221-E150-066.
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