ArticleNanomaterials (Basel, Switzerland)2021
New Strategy for Inducing Surface Anisotropy in Polyimide Films for Nematics Orientation in Display Applications.
Article in Nanomaterials (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 16 citations in OpenAlex.
- Development of HAUP-based method for measuring simultaneously linear birefringence and dichroism near diagonal position in anisotropic media.Scientific reports · 2026Article
- Versatile Adjustment of LDPE Properties via Specific Treatments to Design Optical Components for Display Technologies.Polymers · 2025Article
- From Molecular Design to Practical Applications: Strategies for Enhancing the Optical and Thermal Performance of Polyimide Films.Polymers · 2024Review
- Article
- Review on Optical Methods Used to Characterize the Linear Birefringence of Polymer Materials for Various Applications.Molecules (Basel, Switzerland) · 2023Review
- Polyimide Layers with High Refractivity and Surface Wettability Adapted for Lowering Optical Losses in Solar Cells.Polymers · 2022Article
- A New Texturing Approach of a Polyimide Shielding Cover for Enhanced Light Propagation in Photovoltaic Devices.Nanomaterials (Basel, Switzerland) · 2022Article
- Artificial Neural Network Modeling of Glass Transition Temperatures for Some Homopolymers with Saturated Carbon Chain Backbone.Polymers · 2021Article
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
The operability of liquid crystal displays is strongly impacted by the orientation aspects of nematics, which in turn are affected by the alignment layer surface features. In this work, two polyimide (PI) structures are obtained based on a cycloaliphatic dianhydride and aromatic or aliphatic diamines with distinct flexibility. The attained PI films have high transmittance (T) for visible radiations, i.e., at 550 nm T > 80%. Here, a novel strategy for creating surface anisotropy in the samples that combines rubbing with a cloth and stretching via pressing is reported. Birefringence and atomic force microscopy (AFM) scans reveal that the generated orientation of the chains is affected by the chemical structure of the polymer and order of the steps involved in the surface treatment. Molecular modeling computations and wettability tests show that the PI structure and produced surface topography are competitive factors, which are impacting the intensity of the interactions with the nematic liquid crystals. The achieved results are of great relevance for designing of reliable display devices with improved uniform orientation of liquid crystals.
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