2015
DOI: 10.1080/01932691.2015.1063064
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Influence of Chemical Heterogeneity and Nanoscale Roughness on the DLVO Energy Interaction by Spherical Coordinates

Abstract: In this work the influence of chemical heterogeneity on the stability of nano colloidal systems are surveyed with new method. Zone of influence as a very important parameter for chemical patch surveying are modeled for sphere and flat surface. Surface chemical heterogeneity with specified properties, size and position are created by spherical coordinate integration method. Rippled sphere model are used to create roughness and the flat surface are created by changing two spheres radius ratio. Using the spherica… Show more

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Cited by 4 publications
(4 citation statements)
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References 27 publications
(66 reference statements)
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“…Furthermore, DLVO theory relies on being able to accurately describe the behavior of the electric potential of the EDL by the nonlinear PB equation, which is a valid approximation only under conditions of low (<~25 mV) potential that limits its applicability to salt concentrations below 10 mM [422]. These known limitations, combined with observable experimental results, have inspired many authors to extend DLVO theory in the decades since its inception by accounting for the effects of solvation/ hydration forces [458][459][460][461][462], surface roughness [463][464][465][466], surface charge heterogeneity [467,468], specific ion effects [469][470][471][472], and dynamics [473]. For reviews of extensions applied to account for non-DLVO forces, see Ninham [474] and Bergendahl [475].…”
Section: Electric Double Layer Forces: Dlvo Theorymentioning
confidence: 99%
“…Furthermore, DLVO theory relies on being able to accurately describe the behavior of the electric potential of the EDL by the nonlinear PB equation, which is a valid approximation only under conditions of low (<~25 mV) potential that limits its applicability to salt concentrations below 10 mM [422]. These known limitations, combined with observable experimental results, have inspired many authors to extend DLVO theory in the decades since its inception by accounting for the effects of solvation/ hydration forces [458][459][460][461][462], surface roughness [463][464][465][466], surface charge heterogeneity [467,468], specific ion effects [469][470][471][472], and dynamics [473]. For reviews of extensions applied to account for non-DLVO forces, see Ninham [474] and Bergendahl [475].…”
Section: Electric Double Layer Forces: Dlvo Theorymentioning
confidence: 99%
“…The presence of impurities in natural minerals introduces the heterogeneity in surface charge and wettability, which further affects the bubble-mineral particle interactions. To clarify the impact of surface nano-heterogeneities of minerals or bubbles on hydrophobic interactions in complex mineral systems, researchers have employed the theoretical calculation approaches [66][67][68][69][70] . These studies are valuable for predicting the particle adhesion behavior on bubble surfaces and assessing the effects of surface heterogeneities on hydrophobic interactions.…”
Section: Bubble-mineral Particle Interactionmentioning
confidence: 99%
“…A particle approaching the chemical interfaces, as shown in Figure , will have different affinities toward different parts of the surface. After Hamaker’s work to determine the L-vdW forces for a smooth particle interacting with chemically homogeneous surfaces, many researchers have applied Hamaker’s additive approach to determine the L-vdW forces for particle–surface systems with varied physical parameters such as geometries, orientations, and surface morphologies. ,, There are comparatively very few studies of the adhesion dynamics of a particle approaching a surface with different chemical interfaces. , A detailed understanding of particle adhesion to a chemical interface can be utilized to guide and manipulate the path lines of approaching particles (within the vdW region) to enable their selective adhesion in different applications.…”
Section: Introductionmentioning
confidence: 99%
“…1−8,10,15 There are comparatively very few studies of the adhesion dynamics of a particle approaching a surface with different chemical interfaces. 23,24 A detailed understanding of particle adhesion to a chemical interface can be utilized to guide and manipulate the path lines of approaching particles (within the vdW region) to enable their selective adhesion in different applications.…”
Section: ■ Introductionmentioning
confidence: 99%