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High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices
Published on: September 2, 2009
Pressure-driven fluidic delivery through carbon tube bundles
Alexander V Bazilevsky1, Alexander L Yarin, Constantine M Megaridis
1Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL 60607-7022, USA.
Lab on a Chip
|December 21, 2007
Summary
Researchers demonstrated controlled fluid flow through long carbon tubes using a novel fabrication method. This work enables precise control over microfluidic transport in carbon-based systems.
Area of Science:
- Materials Science
- Microfluidics
- Nanotechnology
Background:
- Carbon-based materials offer unique properties for fluidic applications.
- Controlling fluid flow at the microscale is crucial for various technologies.
Purpose of the Study:
- To demonstrate controlled fluid flow through macroscopically long carbon tubes.
- To develop a high-throughput, pressure-driven fluidic setup using carbon tubes.
- To establish a method for determining inner-diameter distribution from flow measurements.
Main Methods:
- Carbon tubes (0.5-1.8 µm radius, ~1 cm length) synthesized via co-electrospinning and carbonization.
- Fabrication of a high-throughput, pressure-driven fluidic setup with parallel carbon tubes.
- Characterization of flow rates for liquids and gases under varying pressure drops.
Main Results:
- Successful demonstration of controlled laminar flow through long carbon tube bundles.
- Achieved flow discharge rates of ~1 nL/s for liquids and ~30 nL/s for gases.
- Developed a novel procedure to recover inner-diameter distribution from flow rate data.
Conclusions:
- The fabricated setup enables sustained, well-controlled laminar flows in long carbon tubes.
- The developed method provides insights into the transport characteristics and structural properties of the carbon tubes.
- This work paves the way for advanced microfluidic devices utilizing self-assembled carbon nanostructures.
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