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Morphology and Deformation State of Nanofibers in Anodic Aluminum Oxide (AAO) Templates

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The stress state of nanofibers encapsulated in anodic aluminum oxide (AAO) templates was investigated. Each individual nanofiber was considered as a single crystal cylinder under external compressive loading. Closed form solutions to the stresses for a modeled nanofiber with a face-centered cubic (FCC) structure at the point of initial yielding and plastic deformation were obtained in two-dimensional Cartesian and polar coordinates. The analytic solutions predict that the anisotropic deformation state occurs, which causes the fiber to change shape from a circular cross section into a polygonal cross section. Experimental validation was performed through atomic force microscopic (AFM) examination of nickel oxide nanofibers deposited by sol–gel method in AAO templates. The nickel oxide fibers within the nanopores of the template are in polygon pillar form with an average size of approximately 200 nanometers in diameter, which is the typical dimension of the cylindrical nanopores in the AAO templates.
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Keywords: AAO TEMPLATE; DEFORMATION STATE; MORPHOLOGY; NANOFIBERS; STRESS SOLUTIONS

Document Type: Research Article

Publication date: February 1, 2007

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  • Journal of Computational and Theoretical Nanoscience is an international peer-reviewed journal with a wide-ranging coverage, consolidates research activities in all aspects of computational and theoretical nanoscience into a single reference source. This journal offers scientists and engineers peer-reviewed research papers in all aspects of computational and theoretical nanoscience and nanotechnology in chemistry, physics, materials science, engineering and biology to publish original full papers and timely state-of-the-art reviews and short communications encompassing the fundamental and applied research.
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