Über Bragg‐Reflexe mit sichtbarem Licht an monodispersen Kunststofflatices. II

Luck, W. A. P.; Klier, Manfred; Wesslau, Hermann

doi:10.1002/bbpc.19630670114

Cited by 43 publications

(4 citation statements)

References 2 publications

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“…Early measurements focused on variations of n and c, reporting face centered cubic ͑fcc͒ structures at large n and later also body centered cubic ͑bcc͒ structures at low n and low salt conditions. [3][4][5][6] A complete phase diagram of the behavior at moderate to large c, covering also large n was measured by Sirota et al 7 using ultrasmall x-ray scattering ͑USAXS͒. A glass phase was also reported for the first time for charged sphere colloids.…”

mentioning

confidence: 94%

Communications: Complete description of re-entrant phase behavior in a charge variable colloidal model system

Wette

Klassen

Holland‐Moritz

et al. 2010

The Journal of Chemical Physics

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confidence: 94%

Communications: Complete description of re-entrant phase behavior in a charge variable colloidal model system

Wette

Klassen

Holland‐Moritz

et al. 2010

The Journal of Chemical Physics

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“…Second, however, there is a large interest in nucleation and growth processes also from the fundamental point of view. Synthetic colloidal spheres have already been known to show crystallization for some time [3]. Their phase behaviour and their crystallization kinetics have attracted broad attention as test cases for statistical mechanical modelling of equilibrium properties [4][5][6] and as a model case for dynamic processes of nucleation and growth [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous nucleation of colloidal melts under the influence of shearing fields

Stipp

Biehl

Preis

et al. 2004

J. Phys.: Condens. Matter

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Large, oriented single crystals may be obtained from shear melts of colloidal particles after nucleation at the container walls. We are here interested in the processes occurring during the initial phase of their formation. Using different microscopic and scattering techniques we here studied highly charged suspensions of spherical particles, dispersed in low salt or deionized water, in single and double wall confinement, during and after cessation of shear. While the equilibrium phase of our colloidal solids is body centred cubic, the shear induced precursors of heterogeneous nuclei consist of wall based, oriented, registered or freely sliding layers with in plane hexagonal symmetry. Cessation of shear initiates a complex heterogeneous nucleation process. If the layer structures are space filling, they register to form a meta-stable randomly stacked close packed hexagonal crystal. In double wall confinement the transformation to the equilibrium body centred cubic structure occurs on long timescales via nucleation and subsequent lateral growth. For non-space filling, wall based layer structures we find indications of competition between the decay of the layers in favour of the shear melt and their stabilization through registering and subsequent coverage by an epitaxially growing wall crystal. From quantitative growth curve measurements we obtain the initial wall crystal thickness d 0 , which may serve as a lower bound to the extension of the layer structures under shear. We observe a pronounced dependence of d 0 on both former shear conditions and meta-stability of the melt.

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“…The electric double layer surrounding particles plays a significant role in altering the hydrodynamic size of these particles. Additionally, the emergence of electrostatic repulsion between particles due to the presence of the electric double layer leads to the formation of colloidal crystals [10][11][12][13][14][15][16][17][18], resulting in the exhibition of iridescent colors [17,18]. In prior research conducted by the group to which the author belongs, it was discovered that the sedimentation velocity of colloidal particles (poly(methyl methacrylate) (PMMA) spheres and montmorillonite (Mt) particles) in water increased drastically under a small DC electric field of a few V/mm or less [19,20].…”

Section: Introductionmentioning

confidence: 99%

Rapid Ascent of Hollow Particles in Water Induced by an Electric Field

Kimura

2023

Powders

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A novel method has been proposed to induce rapid upward movement of colloidal particles with a density lower than water by applying an electric field of several V/mm in water. This phenomenon, known as the Electrically Induced Rapid Sedimentation (ERS) effect, marks the first occurrence of ‘rapid upward movement of colloidal particles’ within the scope of this phenomenon. Focusing on hollow particles, an investigation of the ERS effect was conducted through transmittance measurement. The hollow particles in water showed a drastic increase in ascending velocity through the application of an electric field. The ascending velocity raised when increasing the electric field strength. Utilizing a quasi-DC electric field (an extremely low-frequency AC electric field), aggregate structures were captured for the first time.

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Über Bragg‐Reflexe mit sichtbarem Licht an monodispersen Kunststofflatices. II

Cited by 43 publications

References 2 publications

Communications: Complete description of re-entrant phase behavior in a charge variable colloidal model system

Communications: Complete description of re-entrant phase behavior in a charge variable colloidal model system

Heterogeneous nucleation of colloidal melts under the influence of shearing fields

Rapid Ascent of Hollow Particles in Water Induced by an Electric Field

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