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Liquid-crystal alignment of rubbed polyimide films: A microscopic investigation

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Abstract

Rubbed polyimide films were investigated by Atomic Force Microscopy (AFM). On a large scale, microgrooves due to rubbing treatment were observed, whilst on a small scale, polyimide chain molecules were found to be non-uniformly oriented. Liquid-crystal mono-layers were adopted in this study as visualizing media for AFM observation.

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Authors and Affiliations

  1. National Laboratory of Molecular and Biomolecular Electronics, Southeast University, 210096, Nanjing, People's Republic of China

    H. -M. Wu, Y. -M. Zhu, Z. -H. Lu & Y. Wei

  2. State Key Laboratory of Solid State Microstructures, Nanjing University, 210093, Nanjing, People's Republic of China

    Q. Luo & Z. -M. Sun

  3. Center for Advanced Studies in Science and Technology of Microstructures, 210093, Nanjing, People's Republic of China

    H. -M. Wu, Q. Luo, Z. -M. Sun, Y. -M. Zhu, Z. -H. Lu & Y. Wei

  4. Nanjing Electronic Devices Institute, 210016, Nanjing, People's Republic of China

    J. -H. Tang

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  1. H. -M. Wu
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  2. J. -H. Tang
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  3. Q. Luo
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  4. Z. -M. Sun
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  5. Y. -M. Zhu
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  6. Z. -H. Lu
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  7. Y. Wei
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Wu, H.M., Tang, J.H., Luo, Q. et al. Liquid-crystal alignment of rubbed polyimide films: A microscopic investigation. Appl. Phys. B 62, 613–618 (1996). https://doi.org/10.1007/BF01081700

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  • DOI: https://doi.org/10.1007/BF01081700

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