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Title: Highly aligned arrays of high aspect ratio barium titanate nanowires via hydrothermal synthesis

We report on the development of a hydrothermal synthesis procedure that results in the growth of highly aligned arrays of high aspect ratio barium titanate nanowires. Using a multiple step, scalable hydrothermal reaction, a textured titanium dioxide film is deposited on titanium foil upon which highly aligned nanowires are grown via homoepitaxy and converted to barium titanate. Scanning electron microscope images clearly illustrate the effect the textured film has on the degree of orientation of the nanowires. The alignment of nanowires is quantified by calculating the Herman's Orientation Factor, which reveals a 58% improvement in orientation as compared to growth in the absence of the textured film. The ferroelectric properties of barium titanate combined with the development of this scalable growth procedure provide a powerful route towards increasing the efficiency and performance of nanowire-based devices in future real-world applications such as sensing and power harvesting.
Authors:
;  [1] ;  [2] ;  [3] ;  [4]
  1. Materials Science and Engineering Department, University of Florida, Gainesville, Florida 32611 (United States)
  2. Mechanical and Aerospace Engineering Department, University of Florida, Gainesville, Florida 32611 (United States)
  3. Aerospace Engineering Department, University of Michigan, Ann Arbor, Michigan 48109 (United States)
  4. (United States)
Publication Date:
OSTI Identifier:
22415104
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 22; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ASPECT RATIO; BARIUM; FERROELECTRIC MATERIALS; FILMS; HYDROTHERMAL SYNTHESIS; NANOWIRES; SCANNING ELECTRON MICROSCOPY; TITANATES; TITANIUM; TITANIUM OXIDES