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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Li, Fengqin Jian, Yongjun Chang, Long Zhao, Guangpu Yang, Liangui |
| Description | Author Affiliation: Li F ( School of Mathematical Science, Inner Mongolia University, Hohhot, Inner Mongolia 010021, PR China.); Jian Y ( School of Mathematical Science, Inner Mongolia University, Hohhot, Inner Mongolia 010021, PR China. Electronic address: jianyj@imu.edu.cn.); Chang L ( School of Mathematical Science, Inner Mongolia University, Hohhot, Inner Mongolia 010021, PR China); Zhao G ( School of Mathematical Science, Inner Mongolia University, Hohhot, Inner Mongolia 010021, PR China.); Yang L ( School of Mathematical Science, Inner Mongolia University, Hohhot, Inner Mongolia 010021, PR China.) |
| Abstract | In this work, we investigate the time periodic electroosmotic flow (EOF) of an electrolyte solution through a slit polyelectrolyte-grafted (PE-grafted) nanochannel under applied alternating current (AC) electrical field. The PE-grafted nanochannel is represented by a rigid surface covered by a polyelectrolyte layer (PEL) in a brush-like configuration. Under Debye-Hückel approximation, we obtain analytical solutions of electrical potential in decoupled regime of PE-grafted nanochannel, where the thickness of PEL is independent of the electrostatic effects triggered by polyelectrolyte charges. Based upon the electrical potential obtained above, we calculate EOF velocities with uniform and non-uniform drag coefficients for PE-grafted nanochannel and compare their results. The effects of pertinent dimensionless parameters on EOF velocity amplitude are discussed in detail. Moreover, the amplitude of EOF velocity in a PE-grafted nanochannel is compared with that in a rigid one. It is shown that larger EOF velocity and volume flow rate are found for a PE-grafted nanochannel. In addition, AC EOF velocity is further investigated. The oscillation of velocity reduces and is restricted within the region near the PEL-electrolyte interface for higher oscillating Reynolds number Re. |
| File Format | HTM / HTML |
| ISSN | 09277765 |
| Journal | Colloids and Surfaces B: Biointerfaces |
| Volume Number | 147 |
| e-ISSN | 18734367 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2016-11-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Colloid and Surface Chemistry Medicine Physical and Theoretical Chemistry Surfaces and Interfaces Biotechnology |
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