کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1642709 1517235 2015 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High-performance, in-plane switching liquid crystal device utilizing an optically isotropic liquid crystal blend of nanostructured liquid crystal droplets in a polymer matrix
ترجمه فارسی عنوان
دستگاه کریستال مایع سوئیچینگ در هواپیما با استفاده از ترکیب کریستال مایع ایزوتروپیک اپتیکی از کریستال های کریستال مایع نانوساختار در یک ماتریس پلیمری
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی


• We demonstrate high contrast ratio, optically isotropic liquid crystal blend.
• The composite shows hysteresis free nature under two domain in-plane switching cell.
• The average size of the liquid crystal droplet is 218 nm.
• No need of alignment layer which reduces product cost.

A light scatter-free, transparent, thermally stable, optically isotropic liquid crystal mixture was achieved among three different mixtures of liquid crystal E7: Norland Optical Adhesive 65 with concentrations 30:70, 40:60, and 50:50 wt%. The 50:50 wt% mixture exhibited the best performed optically isotropic state when exposed to ultraviolet light of intensity 150 mW/cm2 for droplet formation. The high intensity ultraviolet light curing process induces nano-sized liquid crystal droplets in the polymer matrix of average droplet size 218 nm, characterized by scanning electron microscope. The analyzed result shows an excellent contrast ratio (CR) equal to 1574 at the normal direction and a high CR at a wide viewing angle. The magnitude of Kerr constant in these nano-sized PDLC was ~7.36×10−10 mV−2, which was more than ~330 times that of a conventional Kerr material such as nitrobenzene. Unprecedented fast rising and falling times of approximately 385 µs and 1.1 ms, respectively, were achieved for the device. This high-performance material also eliminated the long-term hurdle of hysteresis to make it a promising candidate for next-generation display and photonic technologies.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 153, 15 August 2015, Pages 136–139
نویسندگان
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