Homogeneous Liquid Crystal Alignment on Ion Beam-Induced Y2Sn2O7 Layers

Y 2 Sn 2 O 7 nanoparticle layer fabricated by ion beam (IB) irradiation after annealing is reported here. Spherical particles were induced after IB irradiation as demonstrated by field emission scanning electron microscopy. When this layer was used as an alignment layer, homogeneous alignment of nem...

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Bibliographic Details
Published in:IEEE electron device letters 2015-04, Vol.36 (4), p.363-365
Main Authors: Yang Liu, Hong-Gyu Park, Ju Hwan Lee, Sang Bok Jang, Yoon Ho Jung, Hae-Chang Jeong, Dae-Shik Seo
Format: Article
Language:English
Subjects:
alignment layer
Annealing
ion beam
Ion beams
Liquid crystal displays
Liquid crystals
Morphology
Radiation effects
Thermal stability
Y2Sn2O7
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Summary:Y 2 Sn 2 O 7 nanoparticle layer fabricated by ion beam (IB) irradiation after annealing is reported here. Spherical particles were induced after IB irradiation as demonstrated by field emission scanning electron microscopy. When this layer was used as an alignment layer, homogeneous alignment of nematic liquid crystals (LCs) was observed with a small pretilt angle due to van der Waals interactions between LCs and the Y 2 Sn 2 O 7 layer and interactions between benzene rings of the LCs and broken chemical bonds. The resulting electric-controlled twist nematic cell showed excellent electrical-optical properties, indicating that our approach holds great potential for creating commercial LC displays (LCDs).
ISSN:0741-3106
1558-0563
DOI:10.1109/LED.2015.2399505