Two-Dimensional Skyrmion Lattice Formation in a Nematic Liquid Crystal Consisting of Highly Bent Banana Molecules.
Two-Dimensional Skyrmion Lattice Formation in a Nematic Liquid Crystal Consisting of Highly Bent Banana Molecules.
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DOI：
10.1002/anie.201606388
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发表时间：
2016-09
影响因子：
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通讯作者：
Sungmin Kang;Eun-Woo Lee;Tianqi Li;X. Liang;M. Tokita;K. Nakajima;J. Watanabe
中科院分区：
文献类型：
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作者：
Sungmin Kang;Eun-Woo Lee;Tianqi Li;X. Liang;M. Tokita;K. Nakajima;J. Watanabe
我们合成了一种基于1，7-萘中心核的香蕉形分子，它表现出明显的向列相到向列相相变的介晶性。原子力显微镜(AFM)研究的X射线轮廓和直接成像都清楚地表明，在低温向列相中形成了反常向列相，该向列相具有二维(2D)四方晶格，具有垂直于指向矢的大边缘(约59？)。一种合理的模型是通过类比Skyrmion晶格提出的，在该晶格中，由左手和右手扭转弯曲螺旋形成的两种圆柱体堆叠成2D四方晶格，减小了反转磁区壁。
We synthesized a novel banana-shaped molecule based on a 1,7-naphthalene central core that exhibits a distinct mesomorphism of the nematic-to-nematic phase transition. Both the X-ray profile and direct imaging of atomic force microscopy (AFM) investigations clearly indicates the formation of an anomalous nematic phase possessing a two-dimensional (2D) tetragonal lattice with a large edge (ca. 59 Å) directed perpendicular to the director in the low-temperature nematic phase. One plausible model is proposed by an analogy of skyrmion lattice in which two types of cylinders formed from left- and right-handed twist-bend helices stack into a 2D tetragonal lattice, diminishing the inversion domain wall.