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  Nematic–smectic-C phase transition in the polymeric liquid crystal C-6 polysiloxane: A high resolution x-ray study

Nachaliel, E., Keller, E. N., Davidov, D., Zimmermann, H., & Deutsch, M. (1987). Nematic–smectic-C phase transition in the polymeric liquid crystal C-6 polysiloxane: A high resolution x-ray study. Physical Review Letters, 58(9), 896-899. doi:10.1103/PhysRevLett.58.896.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0019-AE7F-6 Version Permalink: https://hdl.handle.net/21.11116/0000-0000-C625-7
Genre: Journal Article

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PhysRevLett_58_1987_896.pdf (Any fulltext), 557KB
 
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https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.58.896 (Any fulltext)
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 Creators:
Nachaliel, Ehud, Author
Keller, Edward N., Author
Davidov, Dan, Author
Zimmermann, Herbert1, 2, 3, 4, Author           
Deutsch, Moshe, Author
Affiliations:
1Department of Molecular Physics, Max Planck Institute for Medical Research, Max Planck Society, ou_1497705              
2Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society, ou_1497700              
3Zimmermann Group, Max Planck Institute for Medical Research, Max Planck Society, ou_1497749              
4Emeritus Group Biophysics, Max Planck Institute for Medical Research, Max Planck Society, ou_1497712              

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 Abstract: We report on the first x-ray scattering measurements of pretransitional smectic-C fluctuations in the nematic phase of a side-chain polymeric liquid crystal, C-6 polysiloxane. The data are well described by the mean-field theory of Chen and Lubensky suggesting that the mesogenic side groups are only weakly coupled to the polymeric backbone. Because of disorder in the polymer backbone, the correlation lengths, in the vicinity of the nematic-smectic-C phase transition, are weak functions of temperature and their magnitudes are smaller than those of conventional monomeric liquid crystals.

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Language(s): eng - English
 Dates: 1986-11-181987-03-02
 Publication Status: Issued
 Pages: 4
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevLett.58.896
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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 58 (9) Sequence Number: - Start / End Page: 896 - 899 Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1