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Introduction
A number of different micropumps have been developed over the last decades. Among the various kinds of working principles, the micropump using membrane actuation is known as a promising approach. Therefore, a lot of membrane micropumps have been studied with various actuators. The valve is another issue for the development of micropumps. Since a piezoelectric micropump with check valves was first presented by Van Lintel et al. , passive or active check valves have been widely used for micropumps. The micropump with check valves ....etc

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Abstract
This presentation describes a new valveless micropump for bidirectional use. The micropump was fabricated by bonding a fluidic channel and a membrane actuator. The fluidic channel was etched on a glass substrate and the membrane actuator was made on a silicon wafer. The membrane is actuated by a piezoelectric ceramic (PZT) plate so that the membrane generates blowing and suction flows successively along an oblique channel which is connected to the main channel. A blowing flow from an oblique channel into the ma ....etc

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Abstract
Seminar Report
Presented By
Mrs.Anjali Ajay
1st
Semester, M.Tech, Roll No:10GNC01
Department of Electrical Engineering
College of Engineering, Trivandrum
Thiruvananthapuram-16
2010



Near earth objects pose a serious threat to earth. Scientists have proposed several meth-
ods to disrupt or de
ect asteroids. Many ideas were innovated by scientists to de
ect or
destroy asteroids.. The latter is often preferred because disrupting an asteroid increases
the ....etc

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