Evaluation of Floor-grooved Micromixers using Concentration-channel Length Profiles

Du, Yan; Zhang, Zhiyi; Yim, Chae-Ho; Lin, Min; Cao, Xudong

doi:10.3390/mi1010019

Cited by 37 publications

(30 citation statements)

References 31 publications

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“…The geometries that have been incorporated into the microfluidic channels for promoting mixing efficiency include T-shaped microchannel, H-shaped micromixer, and grooved micromixer, etc. [7][8][9][10][11][12]. In particular, it has been demonstrated that a three-dimensional (3D) passive micromixer, which was designed basing on the Baker's transformation concept, can enable fast and efficient mixing even in the low-Reynolds-number condition [13].…”

Section: Introductionmentioning

confidence: 99%

A Microfluidic Mixer of High Throughput Fabricated in Glass Using Femtosecond Laser Micromachining Combined with Glass Bonding

Chu

et al. 2020

Micromachines

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We demonstrate a microfluidic mixer of high mixing efficiency in fused silica substrate using femtosecond laser-induced wet etching and hydroxide-catalysis bonding method. The micromixer has a three-dimensional geometry, enabling efficient mixing based on Baker’s transformation principle. The cross-sectional area of the fabricated micromixer was 0.5 × 0.5 mm2, enabling significantly promotion of the throughput of the micromixer. The performance of the fabricated micromixers was evaluated by mixing up blue and yellow ink solutions with a flow rate as high as 6 mL/min.

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Section: Introductionmentioning

confidence: 99%

A Microfluidic Mixer of High Throughput Fabricated in Glass Using Femtosecond Laser Micromachining Combined with Glass Bonding

Chu

et al. 2020

Micromachines

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“…Good mixing efficiency is particularly important for fast complex chemical reactions where the reaction yields are strongly affected by mixing quality [1]. Degree of mixing can be achieved directly including experimentally [4] and numerically [18]; indirect methods include Poincare section analysis [19] and residence time distribution (RTD) evaluation [20].…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Passive Micromixers at a Wide Range of Reynolds Numbers

2015

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Two novel passive micromixers, denoted as the Y-Y mixer and the H-C mixer, based on split-and-recombine (SAR) principle are studied both experimentally and numerically over Reynolds numbers ranging from 1 to 100. An image analysis technique was used to evaluate mixture homogeneity at four target areas. Numerical simulations were found to be a useful support for the design phase, since a general idea of mixing of fluids can be inferred from the segregation or the distribution of path lines. Comparison with a well-known mixer, the Tear-drop one, was also performed. Over the examined range of Reynolds numbers 1 ď Re ď 100, the Y-Y and H-C mixers showed at their exit an almost flat mixing index characteristic, with a mixing efficiency higher than 90%; conversely the Tear-drop mixer showed a relevant decrease of efficiency at mid-range. Furthermore, the Y-Y and the H-C showed significantly less pressure drop than the Tear-drop mixer.

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“…The hydrostatic potential is used to restructure a flow in a way wh ich results in faster mixing [1][2][3]. The mixing of microflu ids in a passive device is based on several main princip les: a) flow lamination, wh ich is used in basic T-mixers and Y-mixers [16][17][18][19][20][21], in mixers with different geometries: zig-zag, square-wave, rho mbic and the like [22][23], and in serial mu lti-stage and mu lti-layer mixers [24][25][26]); b) chaotic mixing by eddy format ion, stretching and folding [27][28][29][30][31][32][33]; c)split-and-reco mbine concepts (SAR) [34][35][36][37][38][39]. The mixing performance of passive mixers can be enhanced by extending the contact interface of flu ids and by improving the transverse components of flow movement, thus decreasing the length and duration of mixing [37].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Split and Recombination Micromixer in Confront with Basic T- and O- type Micromixers

Nimafar¹,

Viktorov²,

Martinelli³

2012

MECHANICS

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The paper presents an experimental co mparison of three types of static micro mixer. Efficiencies of a split and recomb ination micro mixer (SAR) based on plate symmet rical modules (PSM) and basic T-type and O-type mixers are examined. Experimental tests were carried out in the laminar flow reg ime with a lo w Reynolds number range, 0.083 ≤ Re ≤ 4.166 and image-based techniques were used to evaluate mixing efficiency. Experimental results illustrate that the micro mixers with splitting and recombination have outstanding mixing efficiency than those of without SAR process. Indeed split and reco mbine (SA R) structures of the flow channels result in the reduction of the d iffusion distance of two fluids and optimize the diffusion process and after a short distance fro m inlet high mixing efficiency can be achieved. A lso, experimental data show that the SAR PSM mixer is up to 99% efficient, and that efficiency reaches 90% in a short distance, demonstrating this type of mixer's high mixing performance and the effect of splitting and recombination on the degree of mixing and the efficiency of the mic ro mixer.

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Evaluation of Floor-grooved Micromixers using Concentration-channel Length Profiles

Cited by 37 publications

References 31 publications

A Microfluidic Mixer of High Throughput Fabricated in Glass Using Femtosecond Laser Micromachining Combined with Glass Bonding

A Microfluidic Mixer of High Throughput Fabricated in Glass Using Femtosecond Laser Micromachining Combined with Glass Bonding

Comparative Analysis of Passive Micromixers at a Wide Range of Reynolds Numbers

Experimental Investigation of Split and Recombination Micromixer in Confront with Basic T- and O- type Micromixers

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