کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1804909 | 1024662 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic field effects on the optical properties of an azo-dye doped liquid crystal
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Magnetic field effects on the optical properties of an azo-dye doped liquid crystal Magnetic field effects on the optical properties of an azo-dye doped liquid crystal](/preview/png/1804909.png)
چکیده انگلیسی
Homeotropically aligned nematic liquid crystals doped with azo-dye were subjected both to a linear polarized light of a He-Ne laser and to a magnetic field perpendicular to the incident light beam. We found that the emerging light was elliptically polarized when using magnetic field strengths higher than the threshold value for the magnetic Freedericksz transition. The light transmission, the rotatory power (induced by azo-dye) and the ellipticity varied quasiperiodically when increasing magnetic field strength. The number and positions of maxima and minima depend on the cell thicknesses. Changes in the phase difference between the emergent ordinary and extraordinary rays were computed from the experimental data and the magnetic field dependence of the birefringence was determined.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 306, Issue 1, November 2006, Pages 103-107
Journal: Journal of Magnetism and Magnetic Materials - Volume 306, Issue 1, November 2006, Pages 103-107
نویسندگان
Cornelia Motoc, Gabriela Iacobescu,