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Related Experiment Video

Updated: Oct 20, 2025

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal

Published on: October 31, 2019

Shape bistability in 2D chromonic droplets.

Silvia Paparini¹, Epifanio G Virga¹

¹Dipartimento di Matematica, Università di Pavia, Via Ferrata 5, 27100 Pavia, Italy.

Journal of Physics. Condensed Matter : an Institute of Physics Journal

|September 13, 2021

Summary

This summary is machine-generated.

Theoretical modeling of disodium cromoglycate (DSCG) droplets reveals new insights into their shapes and surface tension. The study predicts a novel shape bistability regime for larger droplets, with potential applications in understanding F-actin tactoids.

Keywords:

F-actin filaments bistability chromonic liquid crystals droplets lyotropic liquid crystals surface tension

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Last Updated: Oct 20, 2025

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal

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Published on: October 31, 2019

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Temperature-Controlled Assembly and Characterization of a Droplet Interface Bilayer

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Published on: April 19, 2021

Area of Science:

Soft Matter Physics
Materials Science
Chemical Physics

Background:

Chromonic nematic phases, such as disodium cromoglycate (DSCG), exhibit complex droplet shapes.
Previous experimental work by Kim et al. (2013) established a mathematical model for DSCG droplet shapes.

Purpose of the Study:

To extend the theoretical modeling of two-dimensional bipolar DSCG droplets.
To achieve quantitative agreement with existing experimental data.
To explore novel phenomena and provide accurate interfacial property estimates.

Main Methods:

Advanced theoretical modeling and mathematical analysis.
Extension of existing models for chromonic liquid crystal systems.
Application of the developed methodology to F-actin tactoids.

Main Results:

The refined theoretical model shows excellent quantitative agreement with experimental DSCG droplet shapes.
A more accurate estimate for the isotropic surface tension at the nematic/isotropic interface was obtained.
A prediction of shape bistability in larger droplets, where tactoids and discoids coexist, was made.

Conclusions:

The theoretical framework provides a robust tool for understanding DSCG droplet behavior.
The predicted shape bistability warrants further experimental investigation.
The study offers valuable insights into the interfacial properties of both DSCG and F-actin tactoids.