Effect of nanostructures orientation on electroosmotic flow in a microfluidic channel

Nanotechnology
An Eng LimShu Rui Wang

Abstract

Electroosmotic flow (EOF) is an electric-field-induced fluid flow that has numerous micro-/nanofluidic applications, ranging from pumping to chemical and biomedical analyses. Nanoscale networks/structures are often integrated in microchannels for a broad range of applications, such as electrophoretic separation of biomolecules, high reaction efficiency catalytic microreactors, and enhancement of heat transfer and sensing. Their introduction has been known to reduce EOF. Hitherto, a proper study on the effect of nanostructures orientation on EOF in a microfluidic channel is yet to be carried out. In this investigation, we present a novel fabrication method for nanostructure designs that possess maximum orientation difference, i.e. parallel versus perpendicular indented nanolines, to examine the effect of nanostructures orientation on EOF. It consists of four phases: fabrication of silicon master, creation of mold insert via electroplating, injection molding with cyclic olefin copolymer, and thermal bonding and integration of practical inlet/outlet ports. The effect of nanostructures orientation on EOF was studied experimentally by current monitoring method. The experimental results show that nanolines which are perpendicular to ...Continue Reading

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Citations

Nov 15, 2018·Micromachines·An Eng LimRafael Taboryski
Nov 4, 2020·Micromachines·An Eng Lim, Yee Cheong Lam
Mar 7, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Rafael TadmorMaria Tadmor

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