Gemini-Induced Columnar Jointing in Vitreous Ice. Cryo-HRSEM as a Tool for Discovering New Colloidal Morphologies

Menger, Fredric M.; Zhang, Hong; Caran, Kevin L.; Seredyuk, Victor A.; Apkarian, Robert P.

doi:10.1021/ja011754w

Cited by 62 publications

(48 citation statements)

References 16 publications

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“…This fact was previously observed in mixtures of Aerosol OT with PEG polymers [29] and it was attributed to association processes between vesicles in the freezing procedure [47,48].…”

Section: Light-scattering Measurementssupporting

confidence: 69%

Spontaneous Vesicles Modulated by Polymers

2011

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Abstract:Vesicles are widely used in technological applications including cosmetic products, in microencapsulation for drug delivery, as anticancer agents and in the technology of adhesives, paints and inks. The vesicle size and the surface charge are very important properties from a technological point of view. Thus, the challenge in formulation is to find inexpensive stable vesicles with well-defined sizes and to modulate the surface charge of these aggregates. In this work we analyze the effect of different polymers on the structural properties of vesicles of the biodegradable surfactant sodium bis(2-ethyl-hexyl) sulfosuccinate, Aerosol OT. Using fluorescence, conductivity, electrophoretic mobility and dynamic light scattering measurements we study the effect of the polymer nature, molecular weight and polymer concentration on the stability and the vesicle size properties. Results demonstrate that it is possible to modulate both the size and the electric surface charge of spontaneous vesicles of Aerosol OT by the addition of very small percentages of poly(allylamine) and poly(maleic anhydride-alt-1-octadecen).

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“…This fact was previously observed in mixtures of Aerosol OT with PEG polymers [29] and it was attributed to association processes between vesicles in the freezing procedure [47,48].…”

Section: Light-scattering Measurementssupporting

confidence: 69%

Spontaneous Vesicles Modulated by Polymers

2011

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“…Similar features have been reported in lunar basalt [137] and by satellite inspection of Martian crater walls [138], for example. They have also been shown to form in quenched glass [109], chemically laced vitrified ice [139], thermally shocked sandstone [140], and cooled stearic acid [141]. The most accessible experiments remain drying starches.…”

Section: Columnar Jointing: Starch and Lavamentioning

confidence: 99%

Drying colloidal systems: Laboratory models for a wide range of applications

et al. 2018

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Abstract. The drying of complex fluids provides a powerful insight into phenomena that take place on time and length scales not normally accessible. An important feature of complex fluids, colloidal dispersions and polymer solutions is their high sensitivity to weak external actions. Thus, the drying of complex fluids involves a large number of physical and chemical processes. The scope of this review is the capacity to tune such systems to reproduce and explore specific properties in a physics laboratory. A wide variety of systems are presented, ranging from functional coatings, food science, cosmetology, medical diagnostics and forensics to geophysics and art.

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“…1. Joints can range in size from micron sized diffusively cooled columns in vitrified, impure, ice [11] to meter sized evaporatively cooled columns in basalt [14]. Other polygonal fracture patterns confined to a plane may evolve and order by similar processes, if a mechanism for the lateral motion of cracks exists.…”

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confidence: 99%

Order and disorder in columnar joints

Goehring

Morris

2005

Europhys. Lett.

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PACS. 45.70.Qj -pattern formation. PACS. 62.20.Mk -Fatigue, brittleness, fracture, and cracks.Abstract. -Columnar joints are three-dimensional fracture networks that form in cooling basalt and several other media. The network organizes itself into ordered, mostly hexagonal columns. The same pattern can be observed on a smaller scale in desiccating starch. We show how surface boundary conditions in the desiccation of starch affect the formation of columnar joints. Under constant drying power conditions, we find a power law dependence of columnar cross-sectional area with depth, while under constant drying rate conditions this coarsening is eventually halted. Discontinuous transitions in pattern scale can be observed under constant external conditions, which may prompt a reinterpretation of similar transitions found in basalt. Starch patterns are statistically similar to those found in basalt, suggesting that mature columnar jointing patterns contain inherent residual disorder, but are statistically scale invariant.

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Gemini-Induced Columnar Jointing in Vitreous Ice. Cryo-HRSEM as a Tool for Discovering New Colloidal Morphologies

Cited by 62 publications

References 16 publications

Spontaneous Vesicles Modulated by Polymers

Spontaneous Vesicles Modulated by Polymers

Drying colloidal systems: Laboratory models for a wide range of applications

Order and disorder in columnar joints

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