dc.creator | Krauss, M. | en_US |
dc.creator | Muench, I. | en_US |
dc.creator | Landis, C. M. | en_US |
dc.creator | Wagner, W. | en_US |
dc.date.accessioned | 2016-10-28T19:53:12Z | |
dc.date.available | 2016-10-28T19:53:12Z | |
dc.date.issued | 2011-04 | en_US |
dc.identifier | doi:10.15781/T20G3H172 | |
dc.identifier.citation | Krauss, 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.issn | 0277-786X | en_US |
dc.identifier.uri | http://hdl.handle.net/2152/43331 | |
dc.description.abstract | We 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.sponsorship | | en_US |
dc.language.iso | English | en_US |
dc.relation.ispartof | | en_US |
dc.rights | Administrative 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.subject | phase-field modeling | en_US |
dc.subject | ferroelectricity | en_US |
dc.subject | nano-generator | en_US |
dc.subject | epitaxial strain | en_US |
dc.subject | finite element method | en_US |
dc.subject | energy-harvesting | en_US |
dc.title | Phase-Field Simulation and Design of a Ferroelectric Nano-Generator | en_US |
dc.type | Proceedings Paper | en_US |
dc.description.department | Aerospace Engineering | en_US |
dc.rights.restriction | Open | en_US |
dc.identifier.doi | 10.1117/12.880493 | en_US |
dc.contributor.utaustinauthor | Landis, C. M. | en_US |
dc.relation.ispartofserial | Behavior and Mechanics of Multifunctional Materials and Composites 2011 | en_US |