کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1494251 1510795 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of silver nanoparticles on fluorescence and nonlinear properties of naturally occurring betacyanin dye
ترجمه فارسی عنوان
اثر نانوذرات نقره بر خواص فلورسانس و غیر خطی رنگ بتایسانیین بطور طبیعی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی


• Betacyanin dye is extracted from red beet root and characterized .
• Silver nanoparticles synthesized by a chemical method and characterized by XRD, HRTEM.
• We show how appropriate concentrations of silver nanoparticles can enable tuning of dye fluorescence efficiency.
• Also shown in the present work how optical limiting threshold can be tuned with varying silver nanoparticle concentrations.
• High nonlinearity we also demonstrated in PVA/Ag nano/Betacyanin composite films.

We present the linear and nonlinear optical studies of a natural dye betacyanin extracted from red beet root in the presence of silver nano particles in colloidal solution. We synthesized silver nano particles and characterized by XRD and HRTEM. We show how appropriate concentration of silver nanoparticles can enable tuning of dye fluorescence efficiency. Nonlinear properties are studied using open aperture Z scan technique with Nd:YAG laser (532 nm, 7 ns, 10 Hz). We show modification of nonlinear properties for the dye to the desired level can be achieved in the presence of silver nanoparticles. High nonlinearity we also demonstrated in PVA/Ag nano/Betacyanin composite films. Theoretical analysis is performed using model based on nonlinear absorption of materials and scattering of metal nanoparticles.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 39, January 2015, Pages 211–217
نویسندگان
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