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dc.creatorKrauss, M.en_US
dc.creatorMuench, I.en_US
dc.creatorLandis, C. M.en_US
dc.creatorWagner, W.en_US
dc.date.accessioned2016-10-28T19:53:12Z
dc.date.available2016-10-28T19:53:12Z
dc.date.issued2011-04en_US
dc.identifierdoi:10.15781/T20G3H172
dc.identifier.citationKrauss, M., I. Muench, C. M. Landis, and W. Wagner. "Phase-field simulation and design of a ferroelectric nano-generator." In SPIE Smart Structures and Materials+ Nondestructive Evaluation and Health Monitoring, pp. 797821-797821. International Society for Optics and Photonics, (Apr., 2011)en_US
dc.identifier.issn0277-786Xen_US
dc.identifier.urihttp://hdl.handle.net/2152/43331
dc.description.abstractWe study the behavior of ferroelectric material (BaTiO3) for the design of a nano-generator to convert mechanical into electrical energy. The investigations consider an electro-mechanical phase-field model with polarization as state variable. This widely accepted model has its origins in the work of and is fully developed by Landis and coworkers. We use a finite element model to simulate tetragonal regions of ferroelectric material sputtered on substrate. Different geometries as well as various mechanical and electrical boundary conditions are considered. The model parameters are normalized to achieve better computational conditions within the stiffness matrix. The major objective of this contribution is the fundamental understanding of domain switching caused by a cyclic electrical field. The corresponding hysteresis loops of the overall polarization cannot be achieved by using a two-dimensional model because the domain topologies evolve in three dimensions. The three-dimensional nature of the domain structure evolution is even true for flat regions or thin films. We show some examples of three-dimensional domain topologies, which are able to break energetically unfavorable symmetries. Finally, the computational model of a tetragonal nano-generator with dimensions 10 x 60 x 10 nm is presented. The specific ratio of height to width and the mounting on substrate is essential for its performance and principle of energy harvesting. We discuss the challenges and scopes of such a system.en_US
dc.description.sponsorshipen_US
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.subjectphase-field modelingen_US
dc.subjectferroelectricityen_US
dc.subjectnano-generatoren_US
dc.subjectepitaxial strainen_US
dc.subjectfinite element methoden_US
dc.subjectenergy-harvestingen_US
dc.titlePhase-Field Simulation and Design of a Ferroelectric Nano-Generatoren_US
dc.typeProceedings Paperen_US
dc.description.departmentAerospace Engineeringen_US
dc.rights.restrictionOpenen_US
dc.identifier.doi10.1117/12.880493en_US
dc.contributor.utaustinauthorLandis, C. M.en_US
dc.relation.ispartofserialBehavior and Mechanics of Multifunctional Materials and Composites 2011en_US


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