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Issue 9, 2016
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Do Lehmann cholesteric droplets subjected to a temperature gradient rotate as rigid bodies?

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Abstract

We performed a Fluorescence Recovery After Photobleaching (FRAP) experiment during the Lehmann rotation of cholesteric droplets in thermodynamic coexistence with the isotropic liquid and subjected to a temperature gradient. By creating and tracking bleached spots near the surface of banded droplets (in which the cholesteric helix is perpendicular to the gradient) and concentric circle droplets oriented by an electric field (in which the helix is parallel to the gradient), we found that neither type of droplet rotates as a solid. This result shows that the texture rotation is mainly due to the local director rotation.

Graphical abstract: Do Lehmann cholesteric droplets subjected to a temperature gradient rotate as rigid bodies?

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Publication details

The article was received on 30 Nov 2015, accepted on 14 Jan 2016 and first published on 14 Jan 2016


Article type: Paper
DOI: 10.1039/C5SM02906F
Soft Matter, 2016,12, 2604-2611

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    Do Lehmann cholesteric droplets subjected to a temperature gradient rotate as rigid bodies?

    G. Poy and P. Oswald, Soft Matter, 2016, 12, 2604
    DOI: 10.1039/C5SM02906F

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