جداسازی میکرو و نانو ذرات با استفاده از روش القای بار الکتروسینتیک در یک کانال مستطیلی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری، مهندسی مکانیک، دانشگاه یزد، یزد، ایران

2 دانشیار، گروه مهندسی مکانیک، دانشگاه یزد، یزد، ایران

3 دانشیار، مهندسی مکانیک، دانشگاه کلگری، کلگری، کانادا

چکیده

اگزوزوم‌ها عامل اصلی سرطان هستند و جدا کردن آنها از خون می‌تواند در تشخیص بیماری مؤثر باشد. ابعاد اگزوزوم‌ها بسیار کوچک است بنابر این جدا کردن آنها کار بسیار حساسی است. در گذشته بیشتر از سانتریفیوژهای دور بالا برای این کار استفاده می­شد اما عیب این روش آن بود که سرعت بالای این سانترفیوژها باعث از بین رفتن و تغییر شکل اگزوزوم می‌شدند، همچنین تجهیزات استفاده شده بسیار گران قیمت بودند. یکی از محبوب ترین روش‌ها که اخیراً برای جدایش ذرات ریز مقیاس استفاده می‌شود و به نسبت روش ارزان‌تر و ساده‌تری محسوب می‌شود، القای بار الکترو سینتیک است. مقاله حاضر به بررسی جداسازی ذرات با استفاده از جریان مستقیم و روش القای بار الکترو سینتیک پرداخته است و بازه ذرات جدا شده بین µm1 تا nm10 است. زمانی که کانال تحت تاثیر میدان الکتریکی قرار می­گیرد، گردابه‌هایی در اطراف آن تشکیل می­شود که از این گردابه‌ها برای به دام انداختن  ذرات و جدا کردن آنها از سیال استفاده شده است. نتایج نشان داده‌اند که ذرات با بازده 100% از سیال جدا شده­اند، همچنین در این مطالعه مدلی برای جدا سازی هم زمان ذرات µm5 و nm100 از یکدیگر با بازده 100% ارائه شده است. مدل ارائه شده در این مطالعه یک کانال مستطیلی است که در داخل آن یک مانع مستطیلی تعبیه شده و در نرم افزار المان محدود Comsol شبیه سازی شده است.

کلیدواژه‌ها

موضوعات


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