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Spectrophotometric determination of reflective liquid crystal cell parameters
Dalarna University, School of Technology and Business Studies, Materials Technology.ORCID iD: 0000-0002-5966-590x
Dalarna University, School of Technology and Business Studies, Material Science.ORCID iD: 0000-0001-5910-4355
Dalarna University, School of Technology and Business Studies, Materials Technology.
2006 (English)In: Journal of applied physiology, ISSN 8750-7587, E-ISSN 1522-1601, Vol. 99, no 5Article in journal (Refereed) Published
Abstract [en]

We introduce a method for the determination of the optical retardation, its wavelength dispersion, the cell twist angle, and the orientation of the input director in a reflective liquid crystal (LC) cell. These parameters are found from the extremes of a characteristic function defined as a sum of two spectral reflectivities of the LC cell placed between a pair of linear polarizers. The reflectivities are measured for two cell orientations, one of which is arbitrary and the other one is turned through 45°. Both theoretical analysis and experimental procedures are presented. Excellent agreement between the experiment and our theory has been found. The proposed method can be applied to the measurement of reflective LC cells with small and large cell gaps, as well as cells with small and large twist angles.

Place, publisher, year, edition, pages
American Institute of Physics , 2006. Vol. 99, no 5
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:du-1270DOI: 10.1063/1.2177376ISI: 000236002900002OAI: oai:dalea.du.se:1270DiVA, id: diva2:519540
Available from: 2005-07-01 Created: 2005-07-01 Last updated: 2018-10-08Bibliographically approved

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Valyukh, SergiyValyuhk, Iryna

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