کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1797929 1524809 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Continuous-flow sheathless diamagnetic particle separation in ferrofluids
ترجمه فارسی عنوان
جداسازی ذرات دیامغناطیسی بدون درز در فلوئید
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
چکیده انگلیسی


• Particles are focused and separated in the two branches of a U-shaped microchannel.
• Negative magnetophoretic motion in ferrofluids causes the particle deflection.
• A 3D numerical model is developed to simulate the particle separation.
• Multiple parametric effects are studied both experimentally and numerically.
• Increasing the outlet-branch width significantly enhances the particle separation.

Separating particles from a complex mixture is often necessary in many chemical and biomedical applications. This work presents a continuous-flow sheathless diamagnetic particle separation in ferrofluids through U-shaped microchannels. Due to the action of a size-dependent magnetic force, diamagnetic particles are focused into a single stream in the inlet branch of the U-turn and then continuously separated into two streams in its outlet branch. A 3D numerical model is developed to predict and understand the diamagnetic particle transport during this separation process. The numerical predictions are found to agree well with the experimental observations in a systematic study of the effects of multiple parameters including ferrofluid flow rate, concentration and magnet-channel distance. Additional numerical studies of the geometric effects of the U-turn reveal that increasing the outlet-branch width of the U-turn can significantly enhance the diamagnetic particle separation in ferrofluids.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 412, 15 August 2016, Pages 114–122
نویسندگان
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