Kinetic control of the coverage of oil droplets by DNA-functionalized colloids

We report a study of reversible adsorption of DNA-coated colloids on complementary functionalized oil droplets. We show that it is possible to control the surface coverage of oil droplets using colloidal particles by exploiting the fact that, during slow adsorption, compositional arrest takes place well before structural arrest occurs. As a consequence, we can prepare colloid-coated oil droplets with a “frozen” degree of loading but with fully ergodic colloidal dynamics on the droplets. We illustrate the equilibrium nature of the adsorbed colloidal phase by exploring the quasi–two-dimensional phase behavior of the adsorbed colloids under the influence of depletion interactions and present simulations of a simple model that illustrates the nature of the compositional arrest and the structural ergodicity.

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Generalized van der Waals theory for phase behavior of two-dimensional nematic liquid crystals. II. Phase coexistence and adsorption

Physical Review E ◽

10.1103/physreve.102.062704 ◽

2020 ◽

Vol 102 (6) ◽

Author(s):

Ezequiel Rodolfo Soulé

Keyword(s):

Liquid Crystals ◽

Phase Behavior ◽

Nematic Liquid Crystals ◽

Van Der Waals ◽

Phase Coexistence ◽

Two Dimensional ◽

Van Der Waals Theory

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Rotational diffusion measurements of suspended colloidal particles using two‐dimensional exchange nuclear magnetic resonance

The Journal of Chemical Physics ◽

10.1063/1.470847 ◽

1996 ◽

Vol 104 (2) ◽

pp. 509-520 ◽

Cited By ~ 11

Author(s):

G. A. Barrall ◽

K. Schmidt‐Rohr ◽

Y. K. Lee ◽

K. Landfester ◽

H. Zimmermann ◽

...

Keyword(s):

Nuclear Magnetic Resonance ◽

Magnetic Resonance ◽

Colloidal Particles ◽

Rotational Diffusion ◽

Two Dimensional ◽

Nuclear Magnetic

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Size-Dependent Separation of Colloidal Particles In Two-Dimensional Convective Self-Assembly

Langmuir ◽

10.1021/la00008a021 ◽

1995 ◽

Vol 11 (8) ◽

pp. 2975-2978 ◽

Cited By ~ 67

Author(s):

Mariko Yamaki ◽

Junichi Higo ◽

Kuniaki Nagayama

Keyword(s):

Self Assembly ◽

Colloidal Particles ◽

Two Dimensional ◽

Size Dependent

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EXPERIMENTS ON BEACH PROFILE CHANGE WITH A LARGE WAVE FLUME

Coastal Engineering Proceedings ◽

10.9753/icce.v18.85 ◽

1982 ◽

Vol 1 (18) ◽

pp. 85 ◽

Cited By ~ 3

Author(s):

Ryoichi Kajima ◽

Takao Shimizu ◽

Kohki Maruyama ◽

Shozo Saito

Keyword(s):

Simple Model ◽

Transport Rate ◽

Sand Transport ◽

Two Dimensional ◽

Beach Profile ◽

Large Wave ◽

Wave Flume ◽

Grain Sizes ◽

Profile Changes ◽

Profile Change

Two-dimensional beach profile changes were investigated with a newly constructed prototype-scale wave flume. The flume is 205 m long, 3.4 m wide and 6 m deep. Sand of two grain sizes was used in the experiments. Analysis of the results was made through use of the parameter C, introduced by Sunamura and Horikawa (1974) to classify beaches as either erosional and accretionary. Beach profile changes obtained in the flume were similar to those in the prototype (field). Net sand transport rate distributions were classified into five types, two of which do not seem to have been observed in laboratory (smallscale) experiments. A simple model describing the five types was developed for evaluating two-dimensional beach profile changes.

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Anomalous Long-Range Attraction in Colloidal Binary Mixtures at Fluid–Fluid Interfaces

Colloids and Interfaces ◽

10.3390/colloids4030036 ◽

2020 ◽

Vol 4 (3) ◽

pp. 36

Author(s):

Zonglin Yi ◽

To Ngai

Keyword(s):

Long Range ◽

Colloidal Particles ◽

Experimental Result ◽

Colloidal System ◽

Fluid Interfaces ◽

Water Interface ◽

Two Dimensional ◽

Colloidal Systems ◽

Oil Water ◽

Theoretical Side

The properties of binary colloidal systems have gained the interest of researchers because they have much richer structures than their one-component counterpart. Continuing efforts are being made on the theoretical side on binary colloidal systems, while many issues remained unsolved for the lack of solid experimental supports, especially for study in the field of two-dimensional (2D) binary colloids system. Oil–water interfaces can serve as a good stringent 2D confinement for colloidal particles and can avoid anomalous problems caused by the quasi-two-dimensional environment in previous experimental reports. In this work, we conduct experimental research of binary colloids system in an oil–water interface to revisit theoretical predication. We measure an ultra-long-range attraction and discuss the possible mechanism of this attraction by comparing the experimental result with existing model and theory. This study could contribute more understanding of the binary colloidal system in both experimental aspects and theoretical aspects.

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