Synthesis of Artificial Polymeric Nanopillars for Clean and Reusable Adhesives
We present a simple and scalable approach to fabricate nanopillars structure using combined techniques of colloidal nanolithography, and chemical etching to mimic the nanopillars of gecko foot-hairs. The resulting polymeric nanopillar structure showed nanoscopic adhesion, superhydrophobic, and easy cleaning properties. The lateral dimension of nanopillars as small as 150 nm and aspect ratio as high as 10:1 have been achieved without lateral collapse between neighboring pillars. The method allows both fabrication of synthetic structures in wafer scale area and direct integration of flexible membrane to assist the array of nanohairs in making intimate contact with the uneven surfaces. Our results indicate that a single nanohair exhibit a mean adhesive force of 1.8 nN. In the macroscopic scale, we demonstrate that the nanostructured surface can adhere firmly to a smooth glass substrate.
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Document Type: Research Article
Publication date: 2008-09-01
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- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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