Effects of Nanostructured Surfaces on Electro-osmotic Flow
Lim, An Eng
Lim, Chun Yee
Lam, Yee Cheong
Date of Issue2016
Polymer Replication on Nanoscale (PRN) (3rd:2016:Switzerland)
School of Mechanical and Aerospace Engineering
Electro-osmotic flow (EOF) is the flow of fluid in a microchannel which is induced by an external elec-tric field. EOF originates from electrical double layer (EDL) formed spontaneously at the channel-fluid interface. The electrostatic potential at the channel wall is called the zeta potential. Nanostructures have been employed in microfluidic channels for electrophoretic separation of biomolecules  and catalytic reaction which yields higher reaction efficiency due to the increased surface area . Howev-er, the effect of nanostructured surfaces on EOF has yet to be fully understood. In this preliminary investigation, we demonstrate experimentally that the presence of nanostructured surfaces affects EOF significantly.
© 2016 The Author(s).