کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6999545 | 1454591 | 2013 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
One-way wicking in open micro-channels controlled by channel topography
ترجمه فارسی عنوان
چرخش یک طرفه در کانال های میکرو کانال باز توسط توپوگرافی کانال کنترل می شود
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کلمات کلیدی
وایکینگ جهت، اثر تنش سطحی، کاپیتالیسم، زاویه تماس، فشار لاپاروس، منیسک سه بعدی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
چکیده انگلیسی
One-way wicking (microfluidic diode) behaviors of a range of IPA-water mixtures on internally structured PDMS-based open micro-channels were experimentally demonstrated and quantified. The open microfluidic channels, each internally decorated with an array of angled fin-like-structure pairs, were fabricated using a combined photolithography and soft molding procedure. Propagations of wetting fluids were found to be much more impeded on the fin-tilting direction, or the hard wicking direction, comparing to the opposite direction, or the easy wicking direction. This asymmetric wicking behaviors were attributed to the structure-induced direction-dependent Laplace pressure. Two key parameters - the contact angle of the wicking fluid and the tilting angle of the fin-like structures - were studied. The effects of preferential evaporation and wetting instability were also investigated. The findings of this study are expected to provide a better understanding of how fluids interact with micro-scaled structures and to offer a new way of manipulating fluids at the micron and nanometer scales.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 404, 15 August 2013, Pages 169-178
Journal: Journal of Colloid and Interface Science - Volume 404, 15 August 2013, Pages 169-178
نویسندگان
Jiansheng Feng, Jonathan P. Rothstein,