caa a22 4500 463235010 CHVBK 20180405153254.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10404-007-0181-4 doi (NATIONALLICENCE)springer-10.1007/s10404-007-0181-4 Hydrodynamic dispersion of neutral solutes in nanochannels: the effect of streaming potential [Elektronische Daten] [Xiangchun Xuan, David Sinton] An analytical model is developed to account for the effect of streaming potential on the hydrodynamic dispersion of neutral solutes in pressure-driven flow. The pressure-driven flow and the resulting electroosmotic backflow exhibit coupled dispersion effects in nanoscale channels where the hydraulic diameter is on the order of the electrical double layer thickness. An effective diffusion coefficient for this regime is derived. The influence of streaming potential on hydrodynamic dispersion is found to be mainly dependent on an electrokinetic parameter, previously termed the "figure of merit”. Results indicate that streaming potential decreases the effective diffusion coefficient of the solute, while increasing the dispersion coefficient as traditionally defined. This discrepancy arises from the additional effect of streaming potential on average solute velocity, and discussed herein. Springer-Verlag, 2007 Hydrodynamic dispersion nationallicence Nanochannel nationallicence Streaming potential nationallicence Neutral solutes nationallicence Electroviscous effect nationallicence Xuan Xiangchun Department of Mechanical Engineering, Clemson University, 29634-0921, Clemson, SC, USA aut Sinton David Department of Mechanical Engineering, University of Victoria, V8W 3P6, Victoria, BC, Canada aut Microfluidics and Nanofluidics Springer-Verlag 3/6(2007-12-01), 723-728 1613-4982 3:6<723 2007 3 10404 https://doi.org/10.1007/s10404-007-0181-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10404-007-0181-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Xuan Xiangchun Department of Mechanical Engineering, Clemson University, 29634-0921, Clemson, SC, USA aut NATIONALLICENCE 700 1- Sinton David Department of Mechanical Engineering, University of Victoria, V8W 3P6, Victoria, BC, Canada aut NATIONALLICENCE 773 0- Microfluidics and Nanofluidics Springer-Verlag 3/6(2007-12-01), 723-728 1613-4982 3:6<723 2007 3 10404 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer