کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7044205 1456948 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improved pillar shape for deterministic lateral displacement separation method to maintain separation efficiency over a long period of time
ترجمه فارسی عنوان
شکل ستون بهبود یافته برای روش جداسازی جابجایی جانبی جبرانی برای حفظ بازده جداسازی در طول مدت زمان طولانی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
چکیده انگلیسی
Deterministic lateral displacement (DLD) separation utilizes streamlines produced by an array of pillars, which determine the critical diameter. However, particle clogging often occurs at the gaps between the pillars and alters the streamlines. This leads to a drastic reduction in the separation efficiency. In this study, a topology optimization technique has been applied to design a new pillar shape. This will allow the gap between the pillars to be increased in order to minimize particle clogging without affecting the originally designed critical diameter, thereby maintaining higher separation efficiency over a long period. Experimental investigations revealed that a DLD device with the optimized pillar forms a smaller clogging region over a longer period of time than DLD devices with circular- or triangular-shaped pillars. In the DLD device with the optimized pillars enables to maintain 92.2% separation efficiency in displacement mode over 30 min, whereas in circular pillars the separation efficiency in displacement mode progressively reduces to 77%. This result leads to the conclusion that the microfluidic device with the optimized pillar shape can provide consistent separation efficiency for a long period of time. It is believed that this device could be used for separating rigid particles as alternative way to produce super-monodispersed micro-particles with affordable cost.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 172, 1 January 2017, Pages 258-267
نویسندگان
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