When 10:30 AM - 11:30 AM Jan 09, 2015
Where 1670 Beyster Building
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Piezoelectric Nanowires: A Novel Technology for High Strength Composites, Sensors and Energy Systems


Henry A. Sodano
University of Florida, Departments of Mechanical and Aerospace Engineering and Materials Science and Engineering

Over the past decade significant progress has been made in the development of materials and devices that capitalize upon geometric anisotropy to achieve unprecedented properties.  This talk will discuss the development of a novel synthesis process of the production of piezoelectric nanowires and discuss their application in multifunctional composites, sensors and energy harvesting and storage devices.  The initial focus will be on the demonstration of fiber reinforced composite materials that utilize nanowire interfaces to enhance both the strength as well as provide functionality to the composite material.  It will be shown that the nanowires lead to more than triple the interfacial shear strength while preserving the fiber strength and our efforts to understand the mechanism responsible for the increased strength will be discussed.  In addition to composite materials, a new synthesis process for the formation of ferroelectric devices from nanowires will be presented.  This versatile processing technique can be used to control morphology, stoichiometry and composition in free standing nanowires and vertically aligned arrays.  The application of the nanowires to the production of energy harvesting and sensing devices as well as conformal ferroelectric films and nanocomposites will be used demonstrate the greatly improved performance over current state of the art nanomaterials.

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