Abstract
Most of nematic liquid crystals (NLCs) align parallel to the rubbing direction on poly-hydroxyethyl methacrylate (pHEMA), except those having a bicyclohexane core which align perpendicular to the rubbed direction. Alignment directions of NLC with the bicyclohexane core are investigated on various rubbed polymers. The relation between the conformation of side chain molecules and the aligning mechanism of NLCs is discussed.