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Rahimi M, Ramezani-Dakhel H, Zhang R, et al. Segregation of liquid crystal mixtures in topological defects. Nat Commun. 2017;8:15064doi: 10.1038/ncomms15064.
Rahimi, M., Ramezani-Dakhel, H., Zhang, R., Ramirez-Hernandez, A., Abbott, N. L., & de Pablo, J. J. (2017). Segregation of liquid crystal mixtures in topological defects. Nature communications, 815064. https://doi.org/10.1038/ncomms15064
Rahimi, Mohammad, et al. "Segregation of liquid crystal mixtures in topological defects." Nature communications vol. 8 (2017): 15064. doi: https://doi.org/10.1038/ncomms15064
Rahimi M, Ramezani-Dakhel H, Zhang R, Ramirez-Hernandez A, Abbott NL, de Pablo JJ. Segregation of liquid crystal mixtures in topological defects. Nat Commun. 2017 Apr 28;8:15064. doi: 10.1038/ncomms15064. PMID: 28452347; PMCID: PMC5414351.
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Nat Commun. 2017 Apr 28;8:15064. doi: 10.1038/ncomms15064.

Segregation of liquid crystal mixtures in topological defects.

Nature communications

Mohammad Rahimi, Hadi Ramezani-Dakhel, Rui Zhang, Abelardo Ramirez-Hernandez, Nicholas L Abbott, Juan J de Pablo

Affiliations

  1. Institute for Molecular Engineering, University of Chicago, Chicago, Illinois 60637, USA.
  2. Argonne National Laboratory, Argonne, Illinois 60439, USA.
  3. Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.

PMID: 28452347 PMCID: PMC5414351 DOI: 10.1038/ncomms15064

Abstract

The structure and physical properties of liquid crystal (LC) mixtures are a function of composition, and small changes can have pronounced effects on observables, such as phase-transition temperatures. Traditionally, LC mixtures have been assumed to be compositionally homogenous. The results of chemically detailed simulations presented here show that this is not the case; pronounced deviations of the local order from that observed in the bulk at defects and interfaces lead to significant compositional segregation effects. More specifically, two disclination lines are stabilized in this work by introducing into a nematic liquid crystal mixture a cylindrical body that exhibits perpendicular anchoring. It is found that the local composition deviates considerably from that of the bulk at the interface with the cylinder and in the defects, thereby suggesting new assembly and synthetic strategies that may capitalize on the unusual molecular environment provided by liquid crystal mixtures.

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