کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1802481 1024598 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Formation and properties of magnetic chains for 100 nm nanoparticles used in separations of molecules and cells
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Formation and properties of magnetic chains for 100 nm nanoparticles used in separations of molecules and cells
چکیده انگلیسی

Optical observations of 100 nm metallic magnetic nanoparticles are used to study their magnetic field induced self assembly. Chains with lengths of tens of microns are observed to form within minutes at nanoparticle concentrations 1010/mL. Chain rotation and magnetophoresis are readily observed, and SEM reveals that long chains are not simple single particle filaments. Similar chains are detected for several 100 nm commercial bio-separation nanoparticles. We demonstrate the staged magnetic condensation of different types of nanoparticles into composite structures and show that magnetic chains bind to immuno-magnetically labeled cells, serving as temporary handles which allow novel magnetic cell manipulations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 321, Issue 10, May 2009, Pages 1452–1458
نویسندگان
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