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Forming, Confining, and Observing Microtubule-Based Active Nematics

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Dynamical numerical model for nematic order reconstruction.

G Lombardo¹, H Ayeb, R Barberi

¹CNR-INFM LiCryL, CEMIF-Center of Excellence for Innovative and Functional Materials, Physics Department, University of Calabria, 87036 Rende, Italy. lombardo@fis.unical.it

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|July 23, 2008

Summary

This summary is machine-generated.

Highly frustrated calamitic nematic liquid crystals exhibit strong elastic distortions. A new tensor order parameter (Q) model and finite element method reveal transient biaxial states during nematic order reconstruction.

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Area of Science:

Materials Science
Condensed Matter Physics
Soft Matter Physics

Background:

Classical elastic theory is insufficient for highly frustrated calamitic nematic liquid crystals with nanoscale elastic distortions.
A more advanced description using the tensor order parameter (Q) is necessary.

Purpose of the Study:

To implement and explore the dynamics of the tensor order parameter (Q) in frustrated nematic liquid crystals.
To investigate the evolution of uniaxial nematic configurations and the emergence of transient biaxial states.

Main Methods:

Utilized a finite element method to solve the Q dynamics.
Employed a variational principle for the numerical implementation.

Main Results:

Demonstrated that uniaxial nematic configurations can transition through transient biaxial states.
Observed a phenomenon connecting two competing uniaxial nematic textures, termed 'nematic order reconstruction.'

Conclusions:

The tensor order parameter (Q) dynamics provide a more accurate description of frustrated nematic liquid crystals.
Nematic order reconstruction, involving transient biaxial states, is a key mechanism in these systems.