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- 저자 : Prakash Chandh (검색결과 1 건)
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K. Girija Sravani,Ramakrishna Desala,Prakash Chandh,K. Srinivasa Rao 한국전기전자재료학회 2022 Transactions on Electrical and Electronic Material Vol.23 No.6
In drug delivery systems micropump plays a very important role for controlled drug delivery. This paper presents the analysis of three designs of micropumps for drug delivery application, where each micropump design is analyzed with normal ring type piezo actuator (NPZT) and Stacked ring type piezo actuator (SPZT) individually. Now totally six different micropump designs are analyzed in this paper. The main objective of this paper is to distinguish the performance of micropump using NPZT and SPZT actuators on various designs, and advantage of using Ring type Piezoelectric (PZT) element over the use of conventional PZT disc as an actuator. With the use of ring type PZT element on membrane the uncovered region of the membrane undergoes more flexular displacement at center due to the radial contraction or expansion. All these micropumps are given a sinusoidal excitation of 90 V peak-to-peak at 100 Hz frequency. All performance parameters of micropump such as membrane deflection, flow rate, chamber pressure, settling time are analyzed as a function of time. In every design, micropumps actuated with SPZT shown improved flow rate without any further increase in voltage. Among all these designs the best one given an outlet flow rate of 800 μl/min, at a maximum flow velocity of 50 mm/sec, with a settling time of 60 ms.
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