کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
731235 1461528 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nanoparticle sizing method based on fluorescence anisotropy analysis
ترجمه فارسی عنوان
روش اندازه گیری نانو ذرات بر اساس تجزیه و تحلیل آنی سوتروپ فلورسانس
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
چکیده انگلیسی


• Novel nanoparticle sizing method for nanoparticle is presented.
• Rotational diffusion coefficient for nanoparticles from 6 nm to 20 nm in diameter is presented.
• Relation between rotation of nanoparticle and that of fluorescent probe connected to nanoparticle is investigated.

Demand for applications of nanoparticles in electric architecture has been increasing. Nanoparticles provide new opportunities for improving circuit response. We discuss a novel method for evaluating nanoparticle sizes based on fluorescence anisotropy analysis. Particle size evaluation is possible through measurements of the rotational diffusion coefficient, which is sensitive to particle size. We develop a system for measuring rotational diffusion coefficients by using a fluorescent probe to label a particle. We report fundamental experiments that verify the feasibility of the proposed method. The rotational diffusion coefficients of gold nanoparticles with diameters ranging 6–20 nm were measured using the proposed method. The measured rotational diffusion coefficients decrease with increasing particle size. This finding indicates that nanoparticles smaller than 15 nm can be measured with fine resolution.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Measurement - Volume 59, January 2015, Pages 382–388
نویسندگان
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