Mathematical modeling of influence of ion size effects in an electrolyte in a nanoslit with overlapped EDL

-, Rajni and Kumar, Prashant (2017) Mathematical modeling of influence of ion size effects in an electrolyte in a nanoslit with overlapped EDL. In: 2nd International Conference on Recent Advances in Mathematical Sciences and its Applications, RAMSA 2017, 12 December 2017 through 14 December 2017, Noida, India.

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Many nanofluidic systems are being used in a wide range of applications due to advances in nanotechnology. Due to nanoscale size of the system, the physics involved in the electric double layer and consequently the different phenomena related to it are different than those at microscale. The Poisson-Boltzmann equation governing the electric double layer in the system has many shortcomings such as point sized ions. The inclusion of finite size of ions give rise to various electrokinetic phenomena. Electrocapillarity is one such phenomena where the size effect plays an important role. Theeffect of asymmetric finite ion sizes in nano-confinement in the view of osmotic pressure and electrocapillarity is analyzed. As the confinement width of the system becomes comparable with the Debye length, the overlapped electric double layer (EDL) is influenced and significantly deformed by the steric effects. The osmotic pressure from the modified Poisson-Boltzmann equation in nanoslit is obtained. Due to nonlinear nature of the modified PB equation, the solution is obtained through numerical method. Afterwards, the electrocapillarity due to the steric effect is analyzed under constant surface potential condition at the walls of the nanoslit along with the flat interface assumption

Item Type: Conference or Workshop Item (Paper)
Keywords: Ion size effect | Electric Double Layer | Electrocapillarity | Poisson Boltzmann Equation
Subjects: Physical, Life and Health Sciences > Engineering and Technology
JGU School/Centre: Jindal Global Business School
Depositing User: Amees Mohammad
Date Deposited: 11 Jan 2022 05:16
Last Modified: 12 Jan 2022 08:42
Official URL:
Funders: Kumoh National Institute of Technology, Gumi, South Korea


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