https://www.sopl-khu.com/publications/63-pretilt-preference-of-liquid-crystals-on-ion-beam-treated-polyimide-layer-surfaces
63. Pretilt Preference of Liquid Crystals on Ion- Beam- Treated Poly...
P. K. Song, T. Kim, S.-W. Choi, S. S. Kim, J. S. Gwag, Mol. Cryst. Liq. Cryst., 583, 1, 104-108.
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