{"title":"A liquid crystal microlens obtained with a non-uniform electric field","authors":"T. Nose, Susumu Sato","doi":"10.1080/02678298908027780","DOIUrl":null,"url":null,"abstract":"Abstract A homogeneously aligned nematic liquid crystal cell with a hole-patterned electrode and with an indium-tin oxide (ITO-) coated counter-electrode has been prepared. A non-uniform electric field can be produced by the asymmetrical electrode structure. The liquid crystal director can be reoriented by applying a voltage across the electrodes, and this produces an axially symmetrical profile of the refractive index. This liquid crystal cell is expected to have a lens effect and so its optical properties have been investigated. The profile of the output light intensity was measured by using a detecting system with an optical fibre. Some relationships between the lens properties, the diameter of the hole and the thickness of the liquid crystal layer have been examined. The liquid crystal cell becomes a convex (converging) lens with a relatively low voltage. A focal length of several millimetres can be obtained by applying voltages of 3-4 V. As the applied voltage increases, the focal length becomes long...","PeriodicalId":18011,"journal":{"name":"Liquid Crystals","volume":null,"pages":null},"PeriodicalIF":2.4000,"publicationDate":"1989-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"201","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Liquid Crystals","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1080/02678298908027780","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 201
Abstract
Abstract A homogeneously aligned nematic liquid crystal cell with a hole-patterned electrode and with an indium-tin oxide (ITO-) coated counter-electrode has been prepared. A non-uniform electric field can be produced by the asymmetrical electrode structure. The liquid crystal director can be reoriented by applying a voltage across the electrodes, and this produces an axially symmetrical profile of the refractive index. This liquid crystal cell is expected to have a lens effect and so its optical properties have been investigated. The profile of the output light intensity was measured by using a detecting system with an optical fibre. Some relationships between the lens properties, the diameter of the hole and the thickness of the liquid crystal layer have been examined. The liquid crystal cell becomes a convex (converging) lens with a relatively low voltage. A focal length of several millimetres can be obtained by applying voltages of 3-4 V. As the applied voltage increases, the focal length becomes long...
期刊介绍：
Liquid Crystals publishes accounts of original research concerned with all aspects of liquid crystal science and technology, including experimental and theoretical studies ranging from molecular design and synthesis to applications engineering. The journal focus is on liquid crystalline supermolecular organization and self-assembly in a wide range of materials, including thermotropic, lyotropic, interfacial, chiral, ferroelectric, polymer, micro/nanocomposite, biological and related soft-matter liquid crystal systems. Liquid Crystals provides the scientific community, in both academia and industry, with a publication of standing, guaranteed by the Editors and by the International Editorial Board who are active scientists in the worldwide liquid crystal community.
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