scholarly journals Rapid fabrication of pressure-driven open-channel microfluidic devices in omniphobic RF paper

Lab on a Chip ◽  
2013 ◽  
Vol 13 (15) ◽  
pp. 2922 ◽  
Author(s):  
Ana C. Glavan ◽  
Ramses V. Martinez ◽  
E. Jane Maxwell ◽  
Anand Bala Subramaniam ◽  
Rui M. D. Nunes ◽  
...  
Keyword(s):  
Open Channel ◽  
Microfluidic Devices ◽  
Rapid Fabrication ◽  
Pressure Driven

scholarly journals Measurement and control of pressure driven flows in microfluidic devices using an optofluidic flow sensor

2014 ◽  
Vol 8 (5) ◽  
pp. 054123 ◽  
Author(s):  
Mohammad Sadegh Cheri ◽  
Hamidreza Shahraki ◽  
Jalal Sadeghi ◽  
Mohammadreza Salehi Moghaddam ◽  
Hamid Latifi
Keyword(s):  
Microfluidic Devices ◽  
Flow Sensor ◽  
And Control ◽  
Measurement And Control ◽  
Pressure Driven

scholarly journals Rapid and Inexpensive Fabrication of Multi-Depth Microfluidic Device using High-Resolution LCD Stereolithographic 3D Printing

2019 ◽  
Vol 3 (1) ◽  
pp. 26 ◽  
Author(s):  
Mohamed Mohamed ◽  
Hitendra Kumar ◽  
Zongjie Wang ◽  
Nicholas Martin ◽  
Barry Mills ◽  
...  
Keyword(s):  
High Resolution ◽  
3D Printing ◽  
Soft Lithography ◽  
Liquid Crystal Display ◽  
Three Dimensional ◽  
Microfluidic Devices ◽  
Single Step ◽  
Droplet Generator ◽  
Rapid Fabrication ◽  
Printing System

With the dramatic increment of complexity, more microfluidic devices require 3D structures, such as multi-depth and -layer channels. The traditional multi-step photolithography is time-consuming and labor-intensive and also requires precise alignment during the fabrication of microfluidic devices. Here, we present an inexpensive, single-step, and rapid fabrication method for multi-depth microfluidic devices using a high-resolution liquid crystal display (LCD) stereolithographic (SLA) three-dimensional (3D) printing system. With the pixel size down to 47.25 μm, the feature resolutions in the horizontal and vertical directions are 150 μm and 50 μm, respectively. The multi-depth molds were successfully printed at the same time and the multi-depth features were transferred properly to the polydimethylsiloxane (PDMS) having multi-depth channels via soft lithography. A flow-focusing droplet generator with a multi-depth channel was fabricated using the presented 3D printing method. Experimental results show that the multi-depth channel could manipulate the morphology and size of droplets, which is desired for many engineering applications. Taken together, LCD SLA 3D printing is an excellent alternative method to the multi-step photolithography for the fabrication of multi-depth microfluidic devices. Taking the advantages of its controllability, cost-effectiveness, and acceptable resolution, LCD SLA 3D printing can have a great potential to fabricate 3D microfluidic devices.

scholarly journals Rheology and microstructural evolution in pressure-driven flow of a magnetorheological fluid with strong particle–wall interactions

2012 ◽  
Vol 23 (9) ◽  
pp. 969-978 ◽  
Author(s):  
Murat Ocalan ◽  
Gareth H. McKinley
Keyword(s):  
Microfluidic Devices ◽  
Magnetorheological Fluid ◽  
Time Dependent ◽  
Mr Fluid ◽  
Flow Through ◽  
Fluid Particles ◽  
And Performance ◽  
Pressure Driven Flow ◽  
Actuator Design ◽  
Pressure Driven

The interaction between magnetorheological (MR) fluid particles and the walls of the device that retain the field-responsive fluid is critical as this interaction provides the means for coupling the physical device to the field-controllable properties of the fluid. This interaction is often enhanced in actuators by the use of ferromagnetic walls that generate an attractive force on the particles in the field-on state. In this article, the aggregation dynamics of MR fluid particles and the evolution of the microstructure in pressure-driven flow through ferromagnetic channels are studied using custom-fabricated microfluidic devices with ferromagnetic sidewalls. The aggregation of the particles and the time-dependent evolution in the microstructure is studied in rectilinear, expansion and contraction channel geometries. These observations help identify methods for improving MR actuator design and performance.

Open-channel, water-in-oil emulsification in paper-based microfluidic devices

Lab on a Chip ◽  
2017 ◽  
Vol 17 (8) ◽  
pp. 1436-1441 ◽  
Author(s):  
C. Li ◽  
M. Boban ◽  
A. Tuteja
Keyword(s):  
Microfluidic Device ◽  
Open Channel ◽  
Microfluidic Devices ◽  
Hydrogel Particles ◽  
Channel Water ◽  
Oil Emulsions

Fabrication of an open-channel, paper-based microfluidic device, utilizing selective wettability, capable of generating water-in-oil emulsions and fabricating hydrogel particles.

Control of pressure-driven components in integrated microfluidic devices using an on-chip electrostatic microvalve

RSC Advances ◽  
2014 ◽  
Vol 4 (93) ◽  
pp. 51593-51602 ◽  
Author(s):  
Joshua D. Tice ◽  
Amit V. Desai ◽  
Thomas A. Bassett ◽  
Christopher A. Apblett ◽  
Paul J. A. Kenis
Keyword(s):  
Microfluidic Devices ◽  
Microfluidic Systems ◽  
On Chip ◽  
Pressure Driven

We report an electrostatic microvalve and microfluidic “pressure-amplifier” circuits used to regulate pressure-driven components (e.g., microvalves) in microfluidic systems.

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