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Related Concept Videos

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Different physical properties of lipids and proteins allow them to localize and form distinct islands or domains in the membrane. Some membrane domains are formed due to protein-protein interactions, whereas others are formed due to the presence of specific lipids such as sphingolipids and sterols—for example, large proteins, such as bacteriorhodopsin, aggregate and create distinct domains.
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Related Experiment Video

Updated: Jul 3, 2026

Double Emulsion Generation Using a Polydimethylsiloxane (PDMS) Co-axial Flow Focus Device
08:58

Double Emulsion Generation Using a Polydimethylsiloxane (PDMS) Co-axial Flow Focus Device

Published on: December 25, 2015

Defect-mediated emulsification in two dimensions.

K S Korolev1, David R Nelson

  • 1Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA. papers.korolev@gmail.com

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|July 23, 2008
PubMed
Summary
This summary is machine-generated.

Dispersed droplets in liquid crystals exhibit attractive interactions at large distances and repulsive forces at short distances. This leads to self-assembly into chains and stabilizes emulsions by preventing droplet coalescence.

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Assembly of Cell Mimicking Supported and Suspended Lipid Bilayer Models for the Study of Molecular Interactions
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Assembly of Cell Mimicking Supported and Suspended Lipid Bilayer Models for the Study of Molecular Interactions

Published on: August 3, 2021

Area of Science:

  • Soft Matter Physics
  • Liquid Crystal Science
  • Materials Science

Background:

  • Understanding droplet dispersions in liquid crystals is crucial for developing novel materials and devices.
  • The role of symmetries (XY-like, tilt, nematic, hexatic) and boundary conditions in droplet interactions remains an active area of research.

Purpose of the Study:

  • To investigate the interactions between dispersed droplets in a liquid crystal medium.
  • To determine the pair potential governing droplet-droplet interactions and their self-assembly behavior.
  • To analyze the factors influencing emulsion stability, such as preferred separation and coalescence barriers.

Main Methods:

  • Calculation of droplet textures for single and paired droplets under strong anchoring boundary conditions.
  • Derivation of a universal droplet-droplet pair potential.
  • Analysis of the effects of thermal fluctuations and film thickness on droplet interactions and stability.

Main Results:

  • A universal attractive-large distance, repulsive-short distance pair potential was obtained for interacting droplets.
  • This interaction leads to a preferred separation between droplets and topological stabilization of the emulsion.
  • Self-assembly into chains was observed, with preferred separations and coalescence energy barriers quantified.

Conclusions:

  • The derived droplet-droplet interaction mechanism provides topological stabilization for liquid crystal emulsions.
  • The findings explain the self-assembly of droplets into ordered structures like chains.
  • Understanding these interactions is key for controlling the microstructure and properties of liquid crystal dispersions.