Two-phase AC electrothermal fluidic pumping in a coplanar asymmetric electrode array

Zhang, Rumi; Dalton, Colin; Jullien, G.A.

doi:10.1007/s10404-010-0686-0

Cited by 54 publications

(55 citation statements)

References 26 publications

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“…Also, both patterns indicate identical results which are in agreement with the corresponding data reported by Ref. 26 for conventional two-phase ACET micropump. The reason that there is a noticeable difference between the results of Patterns A and B, and other patterns is that the generated electric field in these two patterns are much stronger than other patterns, for instance, it is twice as strong as what Pattern D generates, because each electrode pair in Pattern A and B has 2 V rms voltage difference whereas Pattern D has V rms .…”

Section: A Effect Of Fluidic Channel Depthsupporting

confidence: 93%

“…Moreover, Pattern F can generate higher flow rates than Pattern E which is dissimilar to what 014113- 8 Salari, Navi, and Dalton Biomicrofluidics 9, 014113 (2015) was reported by Ref. 26 for the two configurations of conventional two-phase ACET. This means that the results are also dependent on the number of side electrode arrays used, but the trend remains constant.…”

Section: A Effect Of Fluidic Channel Depthcontrasting

confidence: 43%

“…Recent studies showed that ACET flow can efficiently be increased if different actuation patterns are used including single-phase, 37 two-phase, 26 and travelling-wave pattern. 24 In this paper, we focus on single-phase and different two-phase patterns, which are shown in Fig.…”

Section: Actuation Patternmentioning

confidence: 99%

“…26 Any change in the electric field distribution in the bulk of the fluid can dramatically affect the ACET fluid flow. The MAET design can be varied based on the actuation pattern of the microelectrodes, and the number of electrode arrays energized in the micropump.…”

Section: Electrical Aspectmentioning

confidence: 99%

See 3 more Smart Citations

A novel alternating current multiple array electrothermal micropump for lab-on-a-chip applications

2015

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The AC electrothermal technique is very promising for biofluid micropumping, due to its ability to pump high conductivity fluids. However, compared to electroosmotic micropumps, a lack of high fluid flow is a disadvantage. In this paper, a novel AC multiple array electrothermal (MAET) micropump, utilizing multiple microelectrode arrays placed on the side-walls of the fluidic channel of the micropump, is introduced. Asymmetric coplanar microelectrodes are placed on all sides of the microfluidic channel, and are actuated in different phases: one, two opposing, two adjacent, three, or all sides at the same time. Micropumps with different combinations of side electrodes and cross sections are numerically investigated in this paper. The effect of the governing parameters with respect to thermal, fluidic, and electrical properties are studied and discussed. To verify the simulations, the AC MAET concept was then fabricated and experimentally tested. The resulted fluid flow achieved by the experiments showed good agreement with the corresponding simulations. The number of side electrode arrays and the actuation patterns were also found to greatly influence the micropump performance. This study shows that the new multiple array electrothermal micropump design can be used in a wide range of applications such as drug delivery and lab-on-a-chip, where high flow rate and high precision micropumping devices for high conductivity fluids are needed.

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Section: A Effect Of Fluidic Channel Depthsupporting

confidence: 93%

Section: A Effect Of Fluidic Channel Depthcontrasting

confidence: 43%

Section: Actuation Patternmentioning

confidence: 99%

Section: Electrical Aspectmentioning

confidence: 99%

See 2 more Smart Citations

A novel alternating current multiple array electrothermal micropump for lab-on-a-chip applications

2015

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“…[25][26][27][28][29][30][31][32][33][34] In displacement pumps, a pumping force is generated periodically by applying a force to one or more movable chamber walls. By contrast, in dynamic microfluidic pumps, a continous energy source is used to exert a steady driving force on the fluid.…”

Section: Introductionmentioning

confidence: 99%

Microfluidic rectifier based on poly(dimethylsiloxane) membrane and its application to a micropump

Wang

Tsai

et al. 2013

Biomicrofluidics

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A microfluidic rectifier incorporating an obstructed microchannel and a PDMS membrane is proposed. During forward flow, the membrane deflects in the upward direction; thereby allowing the fluid to pass over the obstacle. Conversely, during reverse flow, the membrane seals against the obstacle, thereby closing the channel and preventing flow. It is shown that the proposed device can operate over a wide pressure range by increasing or decreasing the membrane thickness as required. A microfluidic pump is realized by integrating the rectifier with a simple stepper motor mechanism. The experimental results show that the pump can achieve a vertical left height of more than 2 m. Moreover, it is shown that a maximum flow rate of 6.3 ml/min can be obtained given a membrane thickness of 200 lm and a motor velocity of 80 rpm. In other words, the proposed microfluidic rectifier not only provides an effective means of preventing reverse flow but also permits the realization of a highly efficient microfluidic pump. V C 2013 AIP Publishing LLC.

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Enhanced electrothermal pumping with thin film resistive heaters

Williams

2013

Electrophoresis

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This work demonstrates the use of thin film heaters to enhance electrothermal pumping in microfluidic systems. Thin film heating electrothermal pumping is more efficient than Joule heating alone. Numerical simulations of an asymmetric electrode array are performed to demonstrate the advantages of incorporating thin film heaters. This specific simulation shows that thin film heater electrothermal pumping provides approximately two and one-half times more volumetric flow than Joule heating alone for the same input power to both systems. In addition, external heating allows for electrothermal pumping to be applicable to low conductivity media.

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Two-phase AC electrothermal fluidic pumping in a coplanar asymmetric electrode array

Cited by 54 publications

References 26 publications

A novel alternating current multiple array electrothermal micropump for lab-on-a-chip applications

A novel alternating current multiple array electrothermal micropump for lab-on-a-chip applications

Microfluidic rectifier based on poly(dimethylsiloxane) membrane and its application to a micropump

Enhanced electrothermal pumping with thin film resistive heaters

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