Effects of surface charge and boundary slip on time-periodic pressure-driven flow and electrokinetic energy conversion in a nanotube

• Published in: Beilstein journal of nanotechnology Vol. 10; no. 1; pp. 1628 - 1635
• Main Authors: Buren, Mandula, Jian, Yongjun, Zhao, Yingchun, Chang, Long, Liu, Quansheng
• Format: Journal Article
• Language: English
• Published: Germany Beilstein-Institut zur Föerderung der Chemischen Wissenschaften 2019; Beilstein-Institut
• Subjects: Charge density; Efficiency; Electric fields; Electrokinetics; Electrolytes; electroviscous effect; Energy; energy conversion; Energy conversion efficiency; Full Research Paper; nanofluidics; Nanoscience; Nanotechnology; Nanotubes; Photovoltaic cells; Radioactivity; Researchers; Slip flow; streaming potential; Surface charge; surface charge-dependent slip; Velocity; China; Inner Mongolia China; streaming potential; surface charge-dependent slip; energy conversion; nanofluidics; electroviscous effect
• ISSN: 2190-4286; 2190-4286
• DOI: 10.3762/bjnano.10.158

Time-periodic pressure-driven slip flow and electrokinetic energy conversion efficiency in a nanotube are studied analytically. The slip length depends on the surface charge density. Electric potential, velocity and streaming electric field are obtained analytically under the Debye-Hückel approximation. The electrokinetic energy conversion efficiency is computed using these results. The effects of surface charge-dependent slip and electroviscous effect on velocity and electrokinetic energy conversion efficiency are discussed. The main results show that the velocity amplitude and the electrokinetic energy conversion efficiency of the surface charge-dependent slip flow are reduced compared with those of the surface charge-independent slip flow.