کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7135435 1461864 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of a piezoelectric micropump with novel separable design for medical applications
ترجمه فارسی عنوان
توسعه یک میکروپمپ پیزوالکتریک با طراحی جدید قابل جدا شدن برای کاربردهای پزشکی
کلمات کلیدی
پیزوالکتریک، جداکننده میکروپمپ، دیافراگم رئیس نیروی چسب نامتقارن،
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
An innovative separable piezoelectric micropump has been developed to provide low-cost liquid delivery for medical applications. The actuator of the proposed micropump can be used repeatedly to reduce costs, and the pump chamber is disposable to prevent contamination as well as infection. The micropump was fabricated on a highly accurate CNC machine. A piezoelectric plate measuring 22 × 40 × 0.7 mm was used as the actuator and the operating voltage was AC 50-80 V. Moreover, a unique bossed diaphragm, with a cylindrical protrusion at its center, was designed to not only facilitate contact between the diaphragm and piezoelectric actuator but also to overcome the adhesive force, which is a major challenge facing separable micropumps. According to the results of experiments, the adhesive force caused by residual liquid in the pump chamber may adversely affect the resilience of the diaphragm, leading to an insufficient liquid supply. The results show that the thickness and bossed ratio of the diaphragm have a major effect on the flow profiles. To achieve the optimal performance, a 0.3-mm bossed diaphragm was combined with a pump chamber with a depth of 1 mm. The flow rate of the proposed optimal separable micropump can be modulated from 1.58 to 6.21 ml/min at frequencies of less than 20 Hz, and the pump head can reach a maximum of 200 mm-H2O.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators A: Physical - Volume 236, 1 December 2015, Pages 57-66
نویسندگان
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