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  Direct imaging of structural changes induced by ionic liquid gating leading to engineered three-dimensional meso-structures

Cui, B., Werner, P., Ma, T., Zhong, X., Wang, Z., Taylor, J. M., et al. (2018). Direct imaging of structural changes induced by ionic liquid gating leading to engineered three-dimensional meso-structures. Nature Communications, 9: 3055. doi:10.1038/s41467-018-05330-1.

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https://doi.org/10.1038/s41467-018-05330-1 (Publisher version)
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 Creators:
Cui, Bin1, Author
Werner, Peter1, Author
Ma, Tianping1, Author              
Zhong, Xiaoyan2, Author
Wang, Zechao2, Author
Taylor, James Mark1, Author
Zhuang, Yuechen1, Author              
Parkin, Stuart S. P.1, Author              
Affiliations:
1Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society, ou_3287476              
2External Organizations, ou_persistent22              

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 Abstract: The controlled transformation of materials, both their structure and their physical properties, is key to many devices. Ionic liquid gating can induce the transformation of thin-film materials over long distances from the gated surface. Thus, the mechanism underlying this process is of considerable interest. Here we directly image, using in situ, real-time, high-resolution transmission electron microscopy, the reversible transformation between the oxygen vacancy ordered phase brownmillerite SrCoO2.5 and the oxygen ordered phase perovskite SrCoO3. We show that the phase transformation boundary moves at a velocity that is highly anisotropic, traveling at speeds ~30 times faster laterally than through the thickness of the film. Taking advantage of this anisotropy, we show that three-dimensional metallic structures such as cylinders and rings can be realized. Our results provide a roadmap to the construction of complex meso-structures from their exterior surfaces.

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 Dates: 2018-08-03
 Publication Status: Published online
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 Identifiers: BibTex Citekey: P13677
DOI: 10.1038/s41467-018-05330-1
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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 9 Sequence Number: 3055 Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723