Electrical repulsive energy between two cylindrical particles with finite length: Configuration dependence

Juyoung Choi, Hyunbae Dong, Seungjoo Haam, Sangyup Lee

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The electrical repulsive energy between two model cylinders was calculated by solving nonlinear Poission-Boltzmann (P-B) equation under Derjaguin approximation. Effects of the surface potential, Debye screening length, and configuration of cylinders on the repulsive interaction energy were examined. Due to the anisotropy of the shape of cylinder, the interaction repulsive energy showed dependence to the configuration of particles; cylinders aligned in end-to-end configuration showed largest repulsive energy and crossed particles had lowest interaction energy. The configuration effect is originated from the curvature effect of the interacting surfaces. The curved surfaces showed less repulsive energy than flat surfaces at the same interacting surface area. The configuration dependency of interaction energy agreed with the previous analytical solution obtained under the linearized P-B equation. The approach and results present in this report would be applicable in predicting colloidal behavior of cylindrical particles.

Original languageEnglish
Pages (from-to)1131-1136
Number of pages6
JournalBulletin of the Korean Chemical Society
Volume29
Issue number6
DOIs
Publication statusPublished - 2008 Jun 20

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Boltzmann equation
Screening
Anisotropy

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

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abstract = "The electrical repulsive energy between two model cylinders was calculated by solving nonlinear Poission-Boltzmann (P-B) equation under Derjaguin approximation. Effects of the surface potential, Debye screening length, and configuration of cylinders on the repulsive interaction energy were examined. Due to the anisotropy of the shape of cylinder, the interaction repulsive energy showed dependence to the configuration of particles; cylinders aligned in end-to-end configuration showed largest repulsive energy and crossed particles had lowest interaction energy. The configuration effect is originated from the curvature effect of the interacting surfaces. The curved surfaces showed less repulsive energy than flat surfaces at the same interacting surface area. The configuration dependency of interaction energy agreed with the previous analytical solution obtained under the linearized P-B equation. The approach and results present in this report would be applicable in predicting colloidal behavior of cylindrical particles.",
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Electrical repulsive energy between two cylindrical particles with finite length : Configuration dependence. / Choi, Juyoung; Dong, Hyunbae; Haam, Seungjoo; Lee, Sangyup.

In: Bulletin of the Korean Chemical Society, Vol. 29, No. 6, 20.06.2008, p. 1131-1136.

Research output: Contribution to journalArticle

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T1 - Electrical repulsive energy between two cylindrical particles with finite length

T2 - Configuration dependence

AU - Choi, Juyoung

AU - Dong, Hyunbae

AU - Haam, Seungjoo

AU - Lee, Sangyup

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AB - The electrical repulsive energy between two model cylinders was calculated by solving nonlinear Poission-Boltzmann (P-B) equation under Derjaguin approximation. Effects of the surface potential, Debye screening length, and configuration of cylinders on the repulsive interaction energy were examined. Due to the anisotropy of the shape of cylinder, the interaction repulsive energy showed dependence to the configuration of particles; cylinders aligned in end-to-end configuration showed largest repulsive energy and crossed particles had lowest interaction energy. The configuration effect is originated from the curvature effect of the interacting surfaces. The curved surfaces showed less repulsive energy than flat surfaces at the same interacting surface area. The configuration dependency of interaction energy agreed with the previous analytical solution obtained under the linearized P-B equation. The approach and results present in this report would be applicable in predicting colloidal behavior of cylindrical particles.

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