2010
DOI: 10.4028/www.scientific.net/msf.663-665.771
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Fractal Features Grown from Isotropic Melt of a Cholesterol Liquid Crystal

Abstract: Fractal features of branch-like structures grown from isotropic melt of a cholesterol liquid crystal were investigated with differential scanning calorimetry, polarized optical microscope and computer-aided simulation, respectively. With box-counting method, we have calculated the fractal dimension to be about 2.558-2.604 for the branch-like aggregates. Our growth simulation and the calculated value of the fractal dimension suggests that the cluster-cluster aggregation model can be applied to the growing proce… Show more

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Cited by 5 publications
(7 citation statements)
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“…Using capillary method, the TB4A was filled into a LC cell whose spacing was measured to be about ten micrometers. The optical textures of the TB4A were investigated with a POM (Aipha Technologies, China) with a homemade hot stage [5][6][7][8][9][10][11][12].…”
Section: Methodsmentioning
confidence: 99%
“…Using capillary method, the TB4A was filled into a LC cell whose spacing was measured to be about ten micrometers. The optical textures of the TB4A were investigated with a POM (Aipha Technologies, China) with a homemade hot stage [5][6][7][8][9][10][11][12].…”
Section: Methodsmentioning
confidence: 99%
“…For supercooled systems, a variety of patterns have been observed experimentally for the two-dimensional growth of liquid crystal phases out of an isotropic melt [24,25]. Apart from the typical growth of compact domains (figure 1(a)), irregular fractal percolation-like clusters (figure 1(b)) have been observed for a variety of liquid crystal phases [13][14][15][16][17][18][19][20][21] with a slow relaxation dynamics [26][27][28][29][30][31][32][33] and a large viscosity [30][31][32]34], where the corresponding mechanism of fractal growth remains to be understood.…”
Section: Introductionmentioning
confidence: 99%
“…Fractal geometry has been highly successful in describing complex patterns formed in a wealth of growth processes, with examples ranging from dielectric breakdown, colloidal aggregations, biological systems, and geology [1][2][3][4][5][6][7]. Under nonequilibrium conditions, many soft matter systems exhibit growth of fractal-like structures, such as those observed for polymer networks, colloidal aggregates, and liquid crystal clusters [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. For supercooled systems, a variety of patterns have been observed experimentally for the two-dimensional growth of liquid crystal phases out of an isotropic melt [24,25].…”
Section: Introductionmentioning
confidence: 99%
“…Organic luminescent materials based on liquid crystals (LCs) have been attracted intense attention because of their potential applications in optoelectronics [1][2][3][4][5][6][7][8][9][10][11][12]. Some researchers started the exploration on the light emission properties of the small-molecular-weight LCs since Tang and Vanslyke's report on the blue light emission from 8-hydroxyquinoline aluminum in 1987 [1,4,6].…”
Section: Introductionmentioning
confidence: 99%