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Superhydrophobic ceramic coatings enabled by phase-separated nanostructured composite TiO2–Cu2O thin films
This content has been downloaded from IOPscience. Please scroll down to see the full text. 2014 Nanotechnology 25 245601 (http://iopscience.iop.org/0957-4484/25/24/245601) View the table of contents for this issue, or go to the journal homepage for more
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Nanotechnology Nanotechnology 25 (2014) 245601 (7pp)
doi:10.1088/0957-4484/25/24/245601
Superhydrophobic ceramic coatings enabled by phase-separated nanostructured composite TiO2–Cu2O thin films Tolga Aytug1, Daniela F Bogorin2, Parans M Paranthaman1, John E Mathis3, John T Simpson1 and David K Christen1 1
Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA Syracuse University, Physics Department, Syracuse, NY 13244, USA 3 Embry-Riddle Aeronautical University, Daytona Beach, FL 32114, USA 2
E-mail:
[email protected] Received 14 February 2014, revised 12 April 2014 Accepted for publication 23 April 2014 Published 23 May 2014 Abstract
By exploiting phase-separation in oxide materials, we present a simple and potentially low-cost approach to create exceptional superhydrophobicity in thin-film based coatings. By selecting the TiO2–Cu2O system and depositing through magnetron sputtering onto single crystal and metal templates, we demonstrate growth of nanostructured, chemically phase-segregated composite films. These coatings, after appropriate chemical surface modification, demonstrate a robust, non-wetting Cassie–Baxter state and yield an exceptional superhydrophobic performance, with water droplet contact angles reaching to ∼172° and sliding angles
