http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Modeling and flow analysis of piezoelectric based micropump with various shapes of microneedle
Rakesh Kumar Haldkar,Vijay Kumar Gupta,Tanuja Sheorey 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.6
Micropumps have been investigated as drug delivery and disease diagnostic devices. Many of these micropumps have been designed,considering primarily, available micro fabrication technologies rather than appropriate pump performance analysis. Piezoelectric andsilicon based micro pumps are more popular as compared to other smart materials being explored. The microneedle is an integral part ofthese micropumps providing an interface between the drug reservoir and the patient’s body for extracting the blood for investigation. Blood collected in the pump chamber passes through the biosensor and gives the required investigation report. It is aimed to minimize thepain while the microneedle is inserted in the body without having any effect on the flow characteristics. Several factors affect the painwhile inserting the needle, out of which shape and size of the microneedle are two important parameters. In this study we have investigatedthe effect of shape of the microneedle on the flow inside the micropump. A micropump design is based on the required flow at thebiosensor point. All computations were carried out with water (Newtonian fluid) as the working fluid after carrying out a comparativeanalysis with human blood (non-Newtonian fluid). For the pentagonal shaped microneedle, the velocity at the top of the microneedle wasminimum, which is beneficial in that fluid should remain in contact with the sensor for longer time.