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Rotatory power and other optical properties of certain liquid crystals
Open accessAbstract
A group of liquid crystals, mainly derivates of cholesterol, shows remarkable optical properties, including strong rotatory power and selective reflexion of circularly polarized light in a narrow region of wave-lengths.In this paper it is shown how these properties can be explained by the assumption that the molecules are arranged in a special way, so that the electrical axes rotate screw-like.It is inessential whether this occurs in small steps or continuously.When the axes make one revolution over a thickness p, then light in a region around A=pn will be reflected (n = refractive index).The second important parameter is the value of the double refraction ~= (n~-nl)/n.From p and ~ all optical properties can be calculated.No accurate data for testing the theory are available but qualitatively the agreement is complete.
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Metadata
- Authors
- de Vries, H.
- Venue
- Acta Crystallographica
- Published
- 1951-05-01
- Volume
- 4
- Issue
- 3
- Pages
- 219-226
- ISSN
- 0365-110X (ISSN-L)
- OpenAlex
- W2990029976
- Cited by
- 1,207
- References
- 0
- FWCI
- 0.00
- Type
- journal article
- Language
- en
- Open access
- bronze
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- CoChat. (2026). Citation check: Rotatory power and other optical properties of certain liquid crystals. https://app.cochat.ai/papers/10.1107/s0365110x51000751
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- de Vries, H. (1951). Rotatory power and other optical properties of certain liquid crystals. Acta Crystallographica. https://doi.org/10.1107/s0365110x51000751
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