Encyclopedia of Nanotechnology

Living Edition
| Editors: Bharat Bhushan

Surface-Modified Microfluidics and Nanofluidics

  • Kaushik K. Rangharajan
  • Shaurya PrakashEmail author
Living reference work entry
DOI: https://doi.org/10.1007/978-94-007-6178-0_395-2

Definition

Fluid phenomena in micrometer (1–100 μm) or nanometer (1–100 nm)-sized channels that are governed by coupled principles from fluid mechanics, surface chemistry, electrochemistry, and electrostatics are generally referred to as microfluidic and nanofluidic phenomena [1]. The smaller length scales compared to traditional fluid mechanics provide several new and interesting phenomena due to significant enhancement of the surface-area-to-volume ratio, which makes surface-mediated flows important to the overall field of microfluidics and nanofluidics.

Introduction to Surfaces in Microfluidics and Nanofluidics

Microfluidic and nanofluidic devices and systems are characterized by high surface-area-to-volume (SA/V) ratio. For example, a rectangular cross-section channel with 100 μm width, 100 nm depth, and 1 cm length will have a SA/V ratio on the order of 106 m−1. In fact, operational devices incorporating components with SA/V ratio on the order of 109 m−1have already been...

Keywords

Electric Double Layer Drag Reduction Surface Charge Density Slip Length Slip Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  1. 1.Department of Mechanical and Aerospace EngineeringThe Ohio State UniversityColumbusUSA