کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1804156 1024644 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Design and synthesis of plasmonic magnetic nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Design and synthesis of plasmonic magnetic nanoparticles
چکیده انگلیسی

Core–shell nanoparticles containing both iron oxide and gold are proposed for bioseparation applications. The surface plasmon resonance of gold makes it possible to track the positions of individual particles, even when they are smaller than the optical diffraction limit. The synthesis of water-dispersible iron oxide-gold nanoparticles is described. Absorption spectra show the plasmon peaks for Au shells on silica particles, suggesting that thin shells may be sufficient to impart a strong surface plasmon resonance to iron oxide-gold nanoparticles. Dark field optical microscopy illustrates the feasibility of single-particle detection. Calculations of magnetophoretic and drag forces for particles of different sizes reveal design requirements for effective separation of these small particles.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 311, Issue 1, April 2007, Pages 78–83
نویسندگان
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