Results 151 to 160 of about 2,383 (205)

Numerical investigating the impact of fluid properties and oscillation frequency on micro mixer efficiency. [PDF]

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Ghanbari S, Sefid M, Sabbaghi MA.
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Print-and-Peel Fabricated Passive Micromixers

Langmuir, 2009
Advection driven mixing is essential for microfluidics and poses challenges to the design of microdevices. Force transducers or complex channel configurations provide means for, respectively, active or passive disrupting of laminar flows and for homogenizing the composing fluids.
Marlon S, Thomas, Joseph M, Clift, Brent, Millare, Valentine I, Vullev   +3 more
openaire   +2 more sources

Active and Passive Micromixers

2020
Micromixers are classified into two types: active and passive micromixers. Active micromixers promote mixing using moving parts or some external agitation/energy to stir the fluids. Magnetic energy, electrical energy, pressure disturbance, and ultrasonic are examples of the external energies to enhance mixing.
Arshad Afzal, Kwang-Yong Kim
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Passive micromixers with dual helical channels

SPIE Proceedings, 2015
In this study, a three-dimensional (3D) micromixer with cross-linked double helical microchannels is studied to achieve rapid mixing of fluids at low Reynolds numbers (Re). The 3D micromixer takes full advantages of the chaotic advection model with helical microchannels; meanwhile, the proposed crossing structure of double helical microchannels enables
Keyin Liu, Qing Yang, Feng Chen, Yulong Zhao, Xiangwei Meng, Chao Shan, Yanyang Li   +6 more
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Active and passive micromixers: A comprehensive review

Chemical Engineering and Processing - Process Intensification, 2020
Abstract The present review (with 205 refs.) addresses the need for microdevices, presents the basic microfluidic equations and describes the relevant numerical and experimental approaches. Various types and designs of passive and active micromixers are presented.
Morteza Bayareh, Mohsen Nazemi Ashani, Azam Usefian   +2 more
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Passive micromixer with break-up obstructions

SPIE Proceedings, 2006
In this paper, we report on design and fabrication of a passive microfluidic mixer capable of mixing at low Reynolds numbers ( Re ). Passive mixers typically use channel geometry to mix fluids, and many previously reported designs that work only at moderate to high Reynolds numbers and are often difficult to fabricate.
Ali Asgar S. Bhagat, Erik T. K. Peterson, Ian Papautsky   +2 more
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Frequency-Controlled Wireless Passive Thermopneumatic Micromixer

Journal of Microelectromechanical Systems, 2017
This paper reports a novel wireless control of a thermopneumatic zigzag micromixer achieved by selectively activating two passive wireless heaters enabled by an external radiofrequency magnetic field. The two heaters, which are designed to have different resonant frequency (f r ) values of 100 and 130 MHz, are selectively activated by modulating the ...
Marwan Nafea, Alaa AbuZaiter, Suhail Kazi, Mohamed Sultan Mohamed Ali   +3 more
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Recirculating, passive micromixer with a novel sawtooth structure

Lab Chip, 2006
A microfluidic device capable of recirculating nano to microlitre volumes in order to efficiently mix solutions is described. The device consists of molded polydimethyl siloxane (PDMS) channels with pressure inlet and outlet holes sealed by a glass lid. Recirculation is accomplished by a repeatedly reciprocated flow over an iterated sawtooth structure.
Kevin P, Nichols, Julia R, Ferullo, Antje J, Baeumner   +2 more
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