Analyzing mixing quality in a curved centrifugal micromixer through numerical simulation

Shamloo, Amir; Vatankhah, Parham; Akbari, Ali

doi:10.1016/j.cep.2017.03.008

Cited by 48 publications

(31 citation statements)

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“…The same team also worked on the curved structures and explored the mixing efficiency as a function of the distance of the micromixers from the center of the disc. 33 They found that mixing enhances by increasing this distance. However, this improvement is not very significant and is not recommended for small sized centrifugal platforms.…”

Section: Lab On a Chipmentioning

confidence: 99%

“…Later, Shamloo et al (2016) did further simulations to find the optimum parameters for these micromixers. 33 They considered different geometrical and operational parameters, including the angle between the two inlet flows, the crosssectional geometry of the microchannels, the rotational speed of the disc, as well as the number and configuration of the turns in the serpentine structure. In Fig.…”

Section: Lab On a Chipmentioning

confidence: 99%

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Mathematical modeling and computational analysis of centrifugal microfluidic platforms: a review

et al. 2020

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Section: Lab On a Chipmentioning

confidence: 99%

Section: Lab On a Chipmentioning

confidence: 99%

Mathematical modeling and computational analysis of centrifugal microfluidic platforms: a review

et al. 2020

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“…Therefore, the mixing of two different solutions within a microchannel is achieved only by diffusion mechanisms and it will take a very long time (Lim and Lam, 2012). Many microfluidic devices attempt to overcome this disadvantage by passive method or active method (Shamloo et al, 2017;Matías et al, 2018). The passive mixing method does not require external force (Wang et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Mixing Enhancement of Electroosmotic Flow in Microchannels under DC and AC Electric Field

Dong¹,

Geng²,

Dong³

et al. 2020

JAFM

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A novel micromixer is presented in this study and the effect of DC or AC electric field on mixing efficiency is investigated numerically. Four types of AC waveforms are considered to explore the flow characteristic and mixing efficiency. The velocity field, concentration field and the mixing efficiency are analyzed in details. The results demonstrated that a pair of vortices with opposite rotating directions is generated when DC or AC voltages is applied to the electrode plates planted within the walls. The generated vortices greatly enhance the mixing of incoming fluids with different concentrations. The mixing efficiency firstly rises with time and then reaches a relative stable periodic state under different potential waveforms. As the voltage applied on the plates increases, the mixing efficiency is improved obviously. The mixing efficiency under full-wave AC signal is the highest, and it is up to 95.44% when the applied potential is 3 V and frequency is 5 Hz.

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“…Polymeric microfluidics have diverse applications that cover a wide area including particle and fluid manipulations. [1][2][3][4][5] Microfluidic paperbased analytical devices (μPADs), at first, were introduced for biological assay. 6 However, recently numerous applications other than biological assay including mixing, fuel cells and cell separation have been introduced for μPADs, [7][8][9] making papers a suitable alternative for polymeric materials.…”

Section: Introductionmentioning

confidence: 99%

A comparison of different geometrical elements to model fluid wicking in paper‐based microfluidic devices

Boodaghi

Shamloo

2019

AIChE Journal

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Recently, microfluidic paper-based analytical devices (μPADs) have outstripped polymeric microfluidic devices in the ease of fabrication and simplicity. Surface tension-based fluid motion in the paper's porous structure has made the paper a suitable substrate for multiple biological assays by directing fluid into multiple assay zones. The widespread assumption in most works for modeling wicking in a paper is that the paper is a combination of capillaries with the same diameter equal to the effective pore diameter. Although assuming paper as a bundle of capillaries gives a good insight into pressure force that drives the fluid inside the paper, there are some difficulties using the effective pore radius. The effective pore radius is totally different from the average geometrical pore radius which makes it impossible to predict wicking in μPADs based on geometrical parameters. In this article, we introduce different analytical and numerical models to investigate the possibility of determining the permeability of the paper, based on geometrical parameters rather than effective parameters. The lattice Boltzmann method is used for numerical simulations. The permeability of each of the proposed models was compared with the experimental permeability. Results indicated that assuming paper as a combination of capillaries and annuluses leads to accurate results that totally depend on average geometrical values rather than effective values. This paves the way for prediction of the fluid wicking only by considering average geometrical pore and fiber diameters.

show abstract

Analyzing mixing quality in a curved centrifugal micromixer through numerical simulation

Cited by 48 publications

References 50 publications

Mathematical modeling and computational analysis of centrifugal microfluidic platforms: a review

Mathematical modeling and computational analysis of centrifugal microfluidic platforms: a review

Mixing Enhancement of Electroosmotic Flow in Microchannels under DC and AC Electric Field

A comparison of different geometrical elements to model fluid wicking in paper‐based microfluidic devices

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