A comparative study of paper-based microfluidic devices with respect to channel geometry

Jafry, Ali Turab; Lim, Hosub; Kang, Seong Il; Suk, Ji Won; Lee, Jinkee

doi:10.1016/j.colsurfa.2015.12.033

Cited by 39 publications

(27 citation statements)

References 38 publications

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“…In Figure 1 e, we compared the capillary rise height of pure water using different strip widths at a different time interval. Zhong et al 36 and Jafry et al 37 showed that there is no effect of paper strip width on liquid wicking if the strip width is minimal. They found that in the range of 1.2–2 mm width of the paper strip, the variation of liquid velocity is minimal.…”

Section: Resultsmentioning

confidence: 99%

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Liquid Wicking in a Paper Strip: An Experimental and Numerical Study

Mahapatra

2020

ACS Omega

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In this decade, paper-based microfluidics has gained more interest in the research due to the vast applications in medical diagnosis, environmental monitoring, food safety analysis, etc. In this work, we presented a set of experiments to understand the physics of the capillary flow phenomenon through paper strips. Here, using the wicking phenomenon of the liquid in porous media, experimentally, we find out the capillary height of the liquid in filter paper at different time intervals. It was found that the Lucas–Washburn (L–W) model, as well as the evaporation model, fails to predict the capillary rise accurately. However, the detailed numerical solution shows a better similarity with the experimental results. We have also shown the different regimes of the wicking phenomenon using scaling analysis of the modified L–W model. The capillary rise method was applied to detect the added water content in milk. We used milk as a liquid food and found the added water content from the change in the capillary height at different concentrations of milk. Finally, results obtained from the paper-based device were verified with the commercially available lactometer data.

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Section: Resultsmentioning

confidence: 99%

“…Jafry et al. 37 discussed a comparative study of the barrier effect. They used Whatman filter paper grade 1 and made a hydrophobic barrier using wax and SU-8.…”

Section: Resultsmentioning

confidence: 99%

Liquid Wicking in a Paper Strip: An Experimental and Numerical Study

Mahapatra

2020

ACS Omega

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“…Fabrication of BOPP/Graphite/Paper Actuator : The paper used was commercial product with thickness of 44 μm. Paper with low grammage had high porosity and was beneficial to water absorption, which resulted in a larger hygoscopic expansion effect . Hence, the grammage of paper used in this study was 18 g m −2 , which had low grammage and belonged to light paper.…”

Section: Methodsmentioning

confidence: 99%

Multiresponsive Bidirectional Bending Actuators Fabricated by a Pencil‐on‐Paper Method

Weng

Zhou

Chen

et al. 2016

Adv Funct Materials

154

131

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Recently, actuating materials based on carbon nanotubes or graphene have been widely studied. However, present carbon‐based actuating materials are mostly driven by a single stimulus (humidity, light, electricity, etc.), respectively, which means that the application conditions are limited. Here, a new kind of multiresponsive actuating material which can be driven by humidity, light, and electricity is proposed, so it can be used in various conditions. The fabrication is based on the simplest pencil‐on‐paper method, in which the pencil and paper are both low‐cost and easily obtained daily materials. The actuation effect is more remarkable due to a dual‐mode actuation mechanism, which leads to an ultralarge actuation (bending curvature up to 2.6 cm−1). Elaborately designed, the actuator can further exhibit a bidirectional bending actuation, which is a significant improvement compared with previous reported thermal actuators. What is more, a colorful biomimetic flower and a smart curtain are also fabricated, fully utilizing the printable characteristic of the paper and multiresponsive characteristic of the actuator. It is assumed that the newly designed actuating material has great potential in the fields of lab‐on‐paper devices, artificial muscles, robotics, biomimics, and smart household materials.

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“…Recently, paper-based devices have also been reported for various electronic applications [21][22][23][24][25] including chemical and biological sensors and biofuel cells. Numerous sensing and fabrication methods [26][27][28][29][30][31][32] and network geometry [33][34][35][36][37][38] of paper devices have been developed, giving paper-based microfluidic devices great potential for applications in semi-quantitative multi-step assays.…”

Section: 024116-1mentioning

confidence: 99%

Flow reproducibility of whole blood and other bodily fluids in simplified no reaction lateral flow assay devices

Han

Hegener

et al. 2017

Biomicrofluidics

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The "no reaction" lateral flow assay (nrLFA) uses a simplified LFA structure with no conjugate pad and no stored reagents. In the nrLFA, the capillary-based transport time or distance is the key indicator, rather than the outcome of a biochemical reaction. Hence, the calibration and reproducibility of the nrLFA device are critical. The capillary flow properties of several membrane types (nitrocellulose, nylon, cellulose acetate, polyethersulfone, and polyvinylidene difluoride) are evaluated. Flow rate evaluations of MilliporeSigma Hi-Flow™ Plus (HF075, HF135 and HF180) nitrocellulose membranes on nrLFA are performed using bodily fluids (whole blood, blood plasma, and artificial sweat). The results demonstrate that fluids with lower viscosity travel faster, and membranes with slower flow rate exhibit higher capability to distinguish fluids with different viscosities. Reproducibility tests of nrLFA are performed on HF075, demonstrating excellent reproducibility. The coefficient of variation for blood coagulation tests performed with the nrLFA using induced coagulation was 5% for the plasma front and 2% for the RBC front. The effects of variation in blood hematocrit and sample volume are also reported. The overall results indicate that the nrLFA approach has a high potential to be commercially developed as a blood monitoring point-of-care device with simple calibration capability and excellent reproducibility.

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A comparative study of paper-based microfluidic devices with respect to channel geometry

Cited by 39 publications

References 38 publications

Liquid Wicking in a Paper Strip: An Experimental and Numerical Study

Liquid Wicking in a Paper Strip: An Experimental and Numerical Study

Multiresponsive Bidirectional Bending Actuators Fabricated by a Pencil‐on‐Paper Method

Flow reproducibility of whole blood and other bodily fluids in simplified no reaction lateral flow assay devices

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