What Are ThresholdLess AntiFerroelectric (TLAF) LCs?–Disordered SmC*-Like Phase with qT= 1/2 in a Wide Temperature Range
In: Molecular Crystals and Liquid Crystals, Jg. 610 (2015-03-24), S. 1-22
Online
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Zugriff:
In the MC881-MC452 binary mixture system developed by MGC, the near-IR Bragg reflection peak is observed in a wide temperature range from 80°C down to room temperature or lower for a narrow concentration region between 54.99 and 57.50 wt.%; the phase responsible for this near-IR Bragg reflection peak can be identified as disordered SmC*-like phase with qT = 1/2 – hereafter designated as SmC*D(1/2) – which has the TLAF property in the bulk. Four intriguing mechanisms are operative: (1) The critical concentration exists, above which the free energy of SmC*A never becomes lower than that of SmC*; (2) The disclination-assisted thermal linkages assure the thermal equilibrium between ferroelectric and antiferroelectric orderings; (3) The long-range interlayer interactions in the quasi-molecular model stabilize the qT=1/2 state in a wide temperature range; and (4) A ferroelectric hexatic phase exists on the low temperature side of SmC*A and the frustration between them stabilizes another qT=1/2 state which may c...
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What Are ThresholdLess AntiFerroelectric (TLAF) LCs?–Disordered SmC*-Like Phase with qT= 1/2 in a Wide Temperature Range
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Autor/in / Beteiligte Person: | Fukuda, Atsuo |
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Zeitschrift: | Molecular Crystals and Liquid Crystals, Jg. 610 (2015-03-24), S. 1-22 |
Veröffentlichung: | Informa UK Limited, 2015 |
Medientyp: | unknown |
ISSN: | 1563-5287 (print) ; 1542-1406 (print) |
DOI: | 10.1080/15421406.2015.1025198 |
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