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Effect of the supporting pattern on the orientation of hexagonal morphology in thin films of diblock copolymers

  • Theory and Modeling
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Abstract

The model of a thin film sandwiched between two parallel planes the gap between which is filled with the melt of diblock copolymers is revisited. One of the planes (a supporting plane) has a pattern, whereas the other plane (an upper) is uniform. The proposed model is based on mean self-consistent field concepts. The parameters of diblock copolymers are selected so that the melt of diblock copolymers yields a hexagonal morphology in its volume. The upper boundary of the film and support avoid contact with the minor component of the diblock copolymer; as a result, in the film, a hexagonal morphology parallel to the support is formed. When hexagonal and rectangular patterns with preferential interaction with the minor component (the period of patterns coincides with the period of hexagonal symmetry in the volume), the hexagonal morphology changes its orientation from parallel to perpendicular relative to the support. The hexagonal morphology changes its orientation at sufficiently strong interaction between the pattern and minor component. Structural factor is calculated, and characteristic features in the location of peaks for perpendicular and parallel phases of hexagonal morphology are found. The development of additional peaks in the structural factor comes from deformations induced by the interaction between components of the melt of diblock copolymers with the upper boundary, support, and pattern.

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Authors and Affiliations

  1. Institute of Mathematical Modeling, Russian Academy of Sciences, Miusskaya pl. 4a, Moscow, 125047, Russia

    Yu. A. Kriksin

  2. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow, 119991, Russia

    P. G. Khalatur

  3. Faculty of Physics, Moscow State University, Moscow, 119899, Russia

    A. R. Khokhlov

Authors
  1. Yu. A. Kriksin
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  2. P. G. Khalatur
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  3. A. R. Khokhlov
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Corresponding author

Correspondence to Yu. A. Kriksin.

Additional information

Original Russian Text © Yu.A. Kriksin, P.G. Khalatur, A.R. Khokhlov, 2010, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2010, Vol. 52, No. 6, pp. 982–992.

This work was supported by the Russian Foundation for Basic Research, project no. 10-03-00763, and DFG, SFB 569, project B13.

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Kriksin, Y.A., Khalatur, P.G. & Khokhlov, A.R. Effect of the supporting pattern on the orientation of hexagonal morphology in thin films of diblock copolymers. Polym. Sci. Ser. A 52, 645–654 (2010). https://doi.org/10.1134/S0965545X10060118

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  • DOI: https://doi.org/10.1134/S0965545X10060118

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