Results 21 to 30 of about 109 (96)
A Valveless Piezoelectric Micropump Based on Projection Micro Litho Stereo Exposure Technology
IEEE Access, 2019 At present, the micropumps are usually adopted in microelectromechanical systems (MEMS) process, which is characterized by high technical complexity and expense, to obtain micro-scale internal channels. Moreover, the MEMS process is more suitable for the
Jun Huang +5 more
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A novel valve-less piezoelectric micropump generating recirculating flow
Engineering Applications of Computational Fluid Mechanics, 2021 Microfluidic devices or systems to generate recirculating flow are increasingly utilized in the fields of chemistry, biomedicine, biology, with bottlenecks in integration and miniaturization needed a breakthrough.
Xiaosheng Chen +7 more
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MODELING AND SIMULATION OF A CIRCULAR VALVELESS MICROPUMP [PDF]
Journal of the Serbian Society for Computational Mechanics, 2017 <div class="dm_description">In this paper, the behavior of a valveless, diaphragm-founded, piezoelectric micropump is studied and simulated. The nature of the piezoelectric actuator is a PZT-5H piezo-disk and the diaphragm is made of Silicon dioxide (SiO2).
Toufik Barkat +3 more
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Sensors, 2009 In this study, a hybridized neuro-genetic optimization methodology realized by embedding numerical simulations trained artificial neural networks (ANN) into a genetic algorithm (GA) is used to optimize the flow rectification efficiency of the diffuser ...
Hing Wah Lee, Ishak H. Abdul Azid
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DESIGN AND OPTIMIZATION OF VALVELESS MICROPUMPS BY USING GENETIC ALGORITHMS APPROACH [PDF]
Journal of Engineering Science and Technology, 2015 This paper presents a design optimization of valveless micropump using Genetic Algorithms (GA). The micropump is designed with a diaphragm, pumping chamber and diffuser/nozzle element functions as inlet and outlet of micropump with outer dimension of (5 ...
AIDA F. M. SHUKUR +3 more
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Existence and Stability of Periodic Solution Related to Valveless Pumping
Mathematical Problems in Engineering, Volume 2018, Issue 1, 2018., 2018 Valveless pumping, also known as Liebau effect, can be described as the unidirectional flow of liquid in a system without valves that is caused by the asymmetry of placing of the periodically working pump. Recently, the research in this field has been reevoked, partially due to its possible application in nanotechnologies.
B. Dorociaková +4 more
wiley +1 more source
On effect of viscoelastic characteristics of polymers on performance of micropump
Advances in Mechanical Engineering, 2017 Micropumps are the most important components of lab-on-a-chip devices, which are becoming popular recently due to their enormous advantages. Among the different designs of micropumps, the nozzle–diffuser valveless design is the most preferred one due to ...
Ranjitsinha R Gidde, Prashant M Pawar
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Applied Sciences, 2020 The objective of this work is to develop a closed-loop controlled insulin pump to keep the blood glucose level of Type 1 diabetes mellitus (T1DM) patients in the desired range.
Alp Kaçar +2 more
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Journal of Sensors, Volume 2017, Issue 1, 2017., 2017 A numerical model based on equivalent electrical networks has been built to simulate the dynamic behavior of a positive‐displacement MEMS micropump dedicated to insulin delivery. This device comprises a reservoir in direct communication with the inlet check valve, a pumping membrane actuated by a piezo actuator, two integrated piezoresistive pressure ...
S. Fournier, E. Chappel, Paolo Bruschi
wiley +1 more source
Development and Application of One‐Sided Piezoelectric Actuating Micropump
Smart Materials Research, Volume 2013, Issue 1, 2013., 2013 Three types of one‐sided actuating piezoelectric micropumps are studied in this paper. In the first type, one‐sided actuating micropump with two check valves can enhance the flow rate and prevent the back flow in suction mode to keep the flow in one direction.
H. K. Ma +7 more
wiley +1 more source