Electrostatic interaction between two cylindrical soft particles

“…Similarly, expressions for the force and potential energy of the electrostatic interaction between two parallel or crossed soft cylinders have been derived [14].…”

Section: Interaction Between Two Dissimilar Soft Spheresmentioning

confidence: 99%

Theory of electrostatics and electrokinetics of soft particles

Ohshima

2009

Science and Technology of Advanced Materials

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138

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We investigate theoretically the electrostatics and electrokinetics of a soft particle, i.e. a hard particle covered with an ion-penetrable surface layer of polyelectrolytes. The electric properties of soft particles in an electrolyte solution, which differ from those of hard particles, are essentially determined by the Donnan potential in the surface layer. In particular, the Donnan potential plays an essential role in the electrostatics and electrokinetics of soft particles. Furthermore, the concept of zeta potential, which is important in the electrokinetics of hard particles, loses its physical meaning in the electrokinetics of soft particles. In this review, we discuss the potential distribution around a soft particle, the electrostatic interaction between two soft particles, and the motion of a soft particle in an electric field.

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“…In the present paper we apply a similar linearization method to the interaction between two parallel ion-penetrable semi-infinite membranes. Since the potential far inside the membrane is practically equal to the Donnan potential, independent of the membrane separation [6][7][8][9][10][11][12][13][14][15], we linearize the Poison-Boltzmann equation with respect to the deviation of the potential from the Donnan potential. We see that this linearization works quite well for small membrane separations for all values of the density of membrane-fixed charges.…”

Section: Introductionmentioning

confidence: 99%

Approximate expression for the potential energy of the double-layer interaction between two parallel ion-penetrable membranes at small separations in an electrolyte solution

Electrostatic interaction between two cylindrical soft particles

Cited by 43 publications

References 24 publications

The van der Waals interaction between two torus-shaped colloidal particles

The van der Waals interaction between two torus-shaped colloidal particles

Theory of electrostatics and electrokinetics of soft particles

Approximate expression for the potential energy of the double-layer interaction between two parallel ion-penetrable membranes at small separations in an electrolyte solution

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