Article ID Journal Published Year Pages File Type
1648471 Materials Letters 2011 4 Pages PDF
Abstract

A super-hydrophilic Ni–Ti thin film is evaluated using cross-sectional transmission electron microscopy (TEM). Following sputter deposition and annealing, the Ni–Ti thin films are chemically treated with buffered oxide etchant, nitric acid and 30% hydrogen peroxide solution to produce a 100-nm-thick surface oxide layer. The fabricated Ni–Ti thin films show a 10- to 15-nm TiO2 thick layer on its surface with a ~ 67° wetting angle. For the surface treated sample, a porous oxide 100 nm TiO layer is found with a < 5°. It is believed that TiOOH(H2O)n complex forms on the surface to produce the observed super-hydrophilic behavior.

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Physical Sciences and Engineering Materials Science Nanotechnology
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