Title :
Nanostructured surfaces for dramatic reduction of flow resistance in droplet-based microfluidics
Author :
Joonwon Kim ; Chang-Jin Kim
Author_Institution :
Mech. & Aerosp. Eng. Dept., California Univ., Los Angeles, CA, USA
Abstract :
This paper reports a dramatic reduction of liquid droplet flow resistance by engineering the surfaces into nanomechanical hydrophobic structures that show a contact angle over 175/spl deg/. Flow resistances of droplets on open surfaces as well as in confined microchannels (between surfaces) have been measured with significant reduction of flow resistance (over 99% and over 95%, respectively) compared with a surface of the same material.
Keywords :
channel flow; contact angle; drops; microfluidics; nanotechnology; confined microchannels; contact angle; droplet-based microfluidics; flow resistance; nanomechanical hydrophobic structures; nanostructured surfaces; open surfaces; Chemicals; Contact resistance; Equations; Microfluidics; Nanostructures; Polymers; Rough surfaces; Surface resistance; Surface roughness; Surface treatment;
Conference_Titel :
Micro Electro Mechanical Systems, 2002. The Fifteenth IEEE International Conference on
Conference_Location :
Las Vegas, NV, USA
Print_ISBN :
0-7803-7185-2
DOI :
10.1109/MEMSYS.2002.984306
