کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5370436 1388494 2006 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Terahertz dichroism of MBBA liquid crystal on rubbed substrate
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Terahertz dichroism of MBBA liquid crystal on rubbed substrate
چکیده انگلیسی

Terahertz (THz) dichroism of a nematic liquid N-(p-methoxybenzylidene)-p-butylaniline (MBBA) was measured using a GaP Raman THz spectrometer. MBBA on a rubbed plastic substrate generates a band at around 4.0 THz: its liquid crystal phase shows strong dichroism, which well corresponds to that of the IR absorption caused by π(CH) of MBBA molecule reported in the literature. Based on inferences drawn from the present THz and the published IR dichroic results, the 4.0 THz band probably stems from lateral intermolecular or intramolecular interactions of MBBA molecules aligned to the rubbing direction. The results clearly demonstrate that THz spectroscopy is powerful for discussing of phase transition and dichroism of liquid crystals.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 252, Issue 12, 15 April 2006, Pages 4226-4229
نویسندگان
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