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Article Dans Une Revue Physical Review E : Statistical, Nonlinear, and Soft Matter Physics Année : 2016

Elastic interactions between topological defects in chiral nematic shells

Alexandre Darmon
  • Fonction : Auteur
Olivier Dauchot
Teresa Lopez-Leon
Michael Benzaquen

Résumé

We present a self-consistent and robust theoretical model to investigate elastic interactions between topological defects in liquid crystal shells. Accounting for the nonconcentric nature of the shell in a simple manner, we are able to successfully and accurately explain and predict the positions of the defects, most relevant in the context of colloidal self-assembly. We calibrate and test our model on existing experimental data and extend it to all observed defects configurations in chiral nematic shells. We perform experiments to check further and confirm the validity of the present model. Moreover, we are able to obtain quantitative estimates of the energies of +1 or +3/2 disclination lines in cholesterics, whose intricate nature was only reported recently

Dates et versions

hal-01422378 , version 1 (25-12-2016)

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Alexandre Darmon, Olivier Dauchot, Teresa Lopez-Leon, Michael Benzaquen. Elastic interactions between topological defects in chiral nematic shells. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2016, 94 (6), pp.062701. ⟨10.1103/PhysRevE.94.062701⟩. ⟨hal-01422378⟩
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