Results 21 to 30 of about 191 (125)
Design of a Valveless Type Piezoelectric Pump for Micro-Fluid Devices
Transactions on Electrical and Electronic Materials, 2009 AbstractThe operation principle of travelling wave rotary type ultrasonic motor can be applied to fluidic transfer mechanism of micro-pump successfully. In this paper, we propose a novel type valveless micro-pump that uses extensional vibration mode of travelling wave as a volume transporting means. The proposed pump is consisted of coaxial cylindrical
Kim, Hyun-Hoo +4 more
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Advances in Valveless Piezoelectric Pump with Cone-shaped Tubes
Chinese Journal of Mechanical Engineering, 2017 This paper reviews the development of valveless piezoelectric pump with cone-shaped tube chronologically, which have widely potential application in biomedicine and micro-electro-mechanical systems because of its novel principles and deduces the research direction in the future.
Jian-Hui Zhang, Ying Wang, Jun Huang
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Study on the Influencing Factors of the Atomization Rate in a Piezoceramic Vibrating Mesh Atomizer
Applied Sciences, 2020 On the basis of previous study in our research group, the phenomenon of the dynamic tapered angle was founded, the occurrence of atomization is regarded to derive from the combined effects of the dynamic variation of the micro-tapered aperture, and the ...
Qiufeng Yan, Wanting Sun, Jianhui Zhang
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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
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Design and Experimental Verification of a PZT Pump with Streamlined Flow Tubes
Applied Sciences, 2019 In this paper, a streamlined flow tube valveless piezoelectric pump (SLFT PZT pump) is proposed to modify the single flow trend and improve the fluid flow stability.
Ming Tang +6 more
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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
Study of a Fuel Supply Pump with a Piezoelectric Effect for Microdirect Alcohol Fuel Cells
International Journal of Electrochemistry, Volume 2011, Issue 1, 2011., 2011 A novel design for an ethanol injection system has been proposed, which consists of one pump chamber, two valves, and one central‐vibrating piezoelectric device. The system uses a microdiaphragm pump with a piezoelectric device for microdirect alcohol fuel cells. The diameters of the pump chamber are 31 mm and 23 mm, and the depths of the chamber are 1
Hsiao-Kang Ma +4 more
wiley +1 more source
Strojniški vestnik - Journal of Mechanical Engineering, 2015 The pumping and mixing performance of a valveless piezoelectric pump were proposed and studied. A hemisphere-segment group that was fixed in the pump played the role of a valve. Based on the theoretical analysis of the pumping performance, the changes of the fluid velocity field, pressure difference, the coefficient of resistance and flow rate were ...
Hu, Caiqi +4 more
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Journal of Physics: Conference Series, 2021 Abstract A valve less piezoelectric pump with triangular obstacles is designed and manufactured, which uses piezoelectric vibrator as power source. The working principle and theoretical flow rate of the valveless piezoelectric pump are analyzed, and its flow rate expression is derived.
Yeming Sun, Yu Wang, Yiwei Wang
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Micro/Nanoscale Acoustic Manipulation: From Particle Control to Autonomous Microswimmers
Advanced Science, Volume 13, Issue 55, 5 October 2026.This conceptual framework illustrates acoustic technology as a multifunctional platform enabling passive particle manipulation across scales and autonomous propulsion of microswimmers. ABSTRACT Acoustic manipulation and propulsion technologies have emerged as powerful platforms for micro/nanoscale control, enabled by their non‐contact operation, label ...
Jiahui Chu +4 more
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