Bent-core liquid crystals forming two- and three-dimensional modulated structures
Bent-core liquid crystals forming two- and three-dimensional modulated structures
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DOI：
10.1103/physreve.67.031702
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发表时间：
2003-03-01
影响因子：
2.4
通讯作者：
Guillon, D
中科院分区：
文献类型：
--
作者：
Szydlowska, J;Mieczkowski, J;Guillon, D
观察到了弯芯分子的两个柱状相，在垂直于自发极化矢量方向的平面上调制了一个二维(2D)结构。与通常观察到的2D调制的B-1相相反，这些相位在外加电场下是可切换的。这些新相是由破碎的近晶层与正交或倾斜的分子组成的。还给出了沿和垂直于自发极化矢量的密度调制共存的三维结构的证据。
Two columnar phases of bent-core molecules have been observed, with a two-dimensional (2D) structure modulated in the plane perpendicular to the direction of the spontaneous polarization vector. The phases are switchable under an applied electric field, contrary to the commonly observed 2D modulated B-1 phase. These new phases are built from broken smectic layers with orthogonal or tilted molecules. The evidence for a 3D structure in which the density modulations along and perpendicular to the spontaneous polarization vector co-exists is also given.