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|Title:||Two distinct modulated layer structures of an asymmetric bent-shape smectic liquid crystal|
Sprunt, Samuel N.
|Publisher:||Taylor & Francis|
|Citation:||Liquid Crystals, 2012, Vol.39, p1149-1157|
|Abstract:||We present chemical synthesis, polarising optical microscopy, electric current, and small-angle X-ray scattering measurements on a strongly anisotropic bent-shape liquid crystal material. We find that it has two layer-undulated ferroelectric phases, M1 and M2. In the higher temperature M2 phase the undulation amplitude and period increases on cooling, similar to other published materials. It can be identified with a tilted modulated phase. In the M1 phase the molecular plane is not tilted, and – in sharp contrast with all prior observations – the modulation amplitude and period decrease on cooling. These observations can be explained with a ‘leaning’ director structure, where the leaning angle is decreasing on cooling.|
|Copyright:||2012 Taylor & Francis|
|Appears in Collections:||Research Papers (SCM)|
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