کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1788545 1023473 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Measurement of local retardation in optically isotropic liquid crystal devices driven by in-plane electric field
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Measurement of local retardation in optically isotropic liquid crystal devices driven by in-plane electric field
چکیده انگلیسی

The novel method to measure a local optical retardation has been proposed. By combining an electrically controllable birefringence (ECB) liquid crystal (LC) cell and image processing software, the local retardation of a polymer-stabilized blue phase (BP) with in-plane electric field has successfully been measured in a micrometer scale. When the optic axes of the sample and reference cells are aligned ±45° with respect to the crossed polarizers, the optical retardation of the sample is compensated by a reference ECB cell. In this geometry, the optical retardation or birefringence of micro-domains can be experimentally quantified by determining a complete compensation condition with electrically adjustable reference cell and image processing software. This method is very useful to measure Kerr constant of the BPLC more exactly and also can be applied for various samples that require a micrometer scale resolution for the measurement of optical retardation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 10, Issue 4, Supplement, November 2010, Pages e118–e121
نویسندگان
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