Universality of steric effects of electrolytes in nanoconfinements

-, Rajni, Kang, I.S. and Oh, J.M. (2018) Universality of steric effects of electrolytes in nanoconfinements. Europhysics Letters, 124 (1): 14004. pp. 1-10. ISSN 02955075

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We analyze the steric effect of electrolyte on the normal stress exerted on a wall and the free charge density in a nanoconfinement using the modified Poisson-Boltzmann (mPB) equation. The outward normal stress exerted on the channel wall (P nn) is calculated by solving the mPB numerically with a constant surface potential for various equilateral polygonal channels and compared with one-dimensional and circular channels by varying the steric factor (γ) and asymmetry of ions (ξ). The results show that the averaged normal stress on the walls () and the averaged charge density in the channels () are almost independent of the channel shape, and are the same with those of the circular channel. From the numerical observation, we infer the universality of average electric field () and average electrical stress () on the channel wall, both of which are independent of the channel shape if the hydraulic radius is the same.

Item Type: Article
Keywords: Steric effects | Electrolytes | Nanoconfinements
Subjects: Physical, Life and Health Sciences > Computer Science
Physical, Life and Health Sciences > Engineering and Technology
JGU School/Centre: Jindal Global Business School
Depositing User: Mr Sombir Dahiya
Date Deposited: 15 Dec 2021 10:49
Last Modified: 21 Dec 2021 04:49
Official URL: https://doi.org/10.1209/0295-5075/124/14004
Funders: Ministry of Science, ICT and Future Planning, South Korea, National Research Foundation of Korea, South Korea, Institute for Basic Science, South Korea
URI: https://pure.jgu.edu.in/id/eprint/188


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