Poy Guilhem, Oswald Patrick
Université de Lyon, École Normale Supérieure de Lyon, Laboratoire de physique, CNRS, UMR 5672, 46 Allée d'Italie, 69364 Lyon, France.
Soft Matter. 2016 Mar 7;12(9):2604-11. doi: 10.1039/c5sm02906f.
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.
我们在胆甾相液滴与各向同性液体处于热力学共存状态且存在温度梯度的情况下，进行了光漂白后荧光恢复（FRAP）实验。通过在带状液滴（其中胆甾相螺旋垂直于梯度）表面附近以及由电场定向的同心圆液滴（其中螺旋平行于梯度）表面附近创建并跟踪漂白斑点，我们发现这两种类型的液滴都不会像固体一样旋转。这一结果表明，织构旋转主要是由于局部指向矢旋转所致。
