Zeta Potential


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zeta potential

[′zād·ə pə‚ten·chəl]
(physics)
The electrical potential that exists across the interface of all solids and liquids. Also known as electrokinetic potential.

Zeta Potential

 

(also electrokinetic potential), the portion of the total potential drop at an interface between two phases that determines the relative displacement of the two phases in electrokinetic phenomena.

The total potential drop across a phase boundary in disperse systems results from the existence of an electrical double layer. The zeta potential is the potential drop across the diffuse portion of a double layer; within the diffuse portion, a liquid may be displaced tangentially relative to the phase boundary when external influences act on a system. The sign of the zeta potential may be reversed—that is, surface charge reversal may occur—under the influence of ions that are strongly adsorbed on a surface or when the pH of a liquid changes.

The zeta potential at an isoelectric point is equal to zero.

References in periodicals archive ?
D) Effects of increasing concentrations of EGTA on the zeta potential of CFA.
From SEM and TEM images, it showed porous structure in PADA was good for its extension and absorption to particles, meanwhile zeta potential tests confirmed PADA provided more adsorption sites for opposite charges to be neutralized, which both exhibited the amphoteric properties took positive effects on the sludge flocculation.
The AgNPs obtained in water were unstable (the size is ~65 nm while the zeta potential is close to 0).
Additional small amount of oleic acid can enhance the interaction between F68 and phospholipid, which increase the zeta potential and enhance the stability [36, 37].
Analysis of variance (ANOVA) for the zeta potential showed significant differences when using a linear model, which established a relationship with the factors.
Table 4 shows test results of zeta potential for different hardeners.
While the sites of action of liposome-cell interactions are largely determined by size, knowing the zeta potential of a liposome preparation can help predict the fate of the liposomes in vivo.
With their ability to analyze particle size, concentration, zeta potential and aggregation, NanoSight systems are closely aligned with Malvern's market-leading Zetasizer range, extending Malvern's solutions for those working at the nanoscale.
Malvern systems are used to measure particle size, particle shape, zeta potential, protein charge, molecular weight, mass, size and conformation, rheological properties and for chemical identification, advancing the understanding of dispersed systems across many different industries and applications.
Influence of TiO2 Nanoparicles on the Stability of a Cosmetic Nano-Emulsion: Zeta Potential, Microscopy and Rheology Characterization," Car aline Guetta and Addie Gombauld, Ariel Laboratories
00001% to 40% and zeta potential of sample suspensions in the -500 mV to +500 mV range with concentrations from 0.
Previous studies (Chorom and Rengasamy 1995; Marchuk and Rengasamy 2011) have shown that zeta potential of the dispersed clays is closely related to dispersion--flocculation phenomena.