| 手性香蕉形液晶在结晶过程中的分形特性 |
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| 引用本文： | 陈兰莉.手性香蕉形液晶在结晶过程中的分形特性[J].南阳理工学院学报,2009,1(3):17-20. |
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| 作者姓名： | 陈兰莉 |
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| 作者单位： | 南阳理工学院电子与电气工程系,河南,南阳,473004 |
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| 基金项目： | 河南省基础与前沿基础研究项目，河南省科技攻关项目，河南省青年骨干教师资助项目，南阳市科技发展计划 |
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| 摘 要： | 用差分扫描热分析仪、偏光显微镜观察了香蕉形液晶在结晶过程中星形、草状两种分形结构的形成规律。采用计盒维数的方法，计算了这两种分形体的分形维数大约为1．9。用计算机模拟，重现了它的结晶过程，分形理论说明这种香蕉形液晶的结晶过程属于渗流生长模型。
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| 关 键 词： | 香蕉形液晶 分形 分形维数 渗流 |
FRACTAL FEATURES OF GROWING AGGREGATES FROM ISOTROPIC MELT OF A CHIRAL BANANA-SHAPED LIQUID CRYSTAL |
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| CHEN Lan-li.FRACTAL FEATURES OF GROWING AGGREGATES FROM ISOTROPIC MELT OF A CHIRAL BANANA-SHAPED LIQUID CRYSTAL[J].Journal of Nanyang Institute of Technology,2009,1(3):17-20. |
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| Authors: | CHEN Lan-li |
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| Institution: | CHEN Lan-li ( Department of Electronics, Nanyang Institute of Technology, Nanyang 473004, China) |
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| Abstract: | Fractal features of aggregates growing out of the isotropic melt of a chiral banana-shaped liquid crystal, 1,3-phenylene bis {4- 3-chloro-4-（3,7-dimethyloctyloxyl） ] phenyliminomethyl} benzoate, were investigated with differential scanning calorimetry, polarizing optical microscopy, and computer - aided simulation, respectively. Both star-like and grass-like aggregates were observed to grow out of the isotropic melt of the bent-core liquid crystal. With box-counting method, we calculated the fractal dimensions to be about 1.9 for both the star-like and the grass-like aggregates, suggesting the percolation growth of the banana-phase from the isotropic melt of the chiral banana-shaped liquid crystal. |
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| Keywords: | Banana-shaped liquid crystal Fractal Fractal dimension Percolation |
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