16 lines
732 B
Markdown
16 lines
732 B
Markdown
---
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title: "Homogeneous alignment"
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chunk: 1/1
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source: "https://en.wikipedia.org/wiki/Homogeneous_alignment"
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category: "reference"
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tags: "science, encyclopedia"
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date_saved: "2026-05-05T11:28:00.232029+00:00"
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instance: "kb-cron"
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---
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In liquid crystals homogeneous alignment, sometimes called planar alignment, is the state of alignment where molecules align in parallel to a substrate. The opposite method is homeotropic alignment.
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For planar alignment - polyimides can be used. One of the popular ones is PI-2555.
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The surface has to be rubbed by paper or by a velvet or similar cloth in order to make the alignment axis parallel to the rubbing. However the exact mechanism of this alignment is not entirely clear.
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== References == |