Irregular Fractal-Like Crystal Growth of Ammonium Chloride

Haruo Honjo; Shonosuke Ohta; Mitsugu Matsushita

doi:10.1143/JPSJ.55.2487

Irregular Fractal-Like Crystal Growth of Ammonium Chloride

Haruo Honjo, Shonosuke Ohta, Mitsugu Matsushita

Electrical Engineering Sciences

Research output: Contribution to journal › Article › peer-review

61 Citations (Scopus)

Abstract

Irregular dendritic crystals of ammonium chloride (NH₄C1) are grown two-dimensionally between two parallel glasses, one of which has rough surface. The pattern clearly reminds us of those of Witten-Sander diffusion-limited aggregation (DLA) model. The radius of gyration is measured to give the fractal dimension d_f=1.671 ±0.002, which is in good agreement with two-dimensional DLA. Our result implies that any random perturbations strong enough to overcome crystalline anisotropy always give rise to random DLA-like crystals, instead of otherwise regular dendritic crystals.

Original language	English
Pages (from-to)	2487-2490
Number of pages	4
Journal	journal of the physical society of japan
Volume	55
Issue number	8
DOIs	https://doi.org/10.1143/JPSJ.55.2487
Publication status	Published - Aug 1986

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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title = "Irregular Fractal-Like Crystal Growth of Ammonium Chloride",

abstract = "Irregular dendritic crystals of ammonium chloride (NH4C1) are grown two-dimensionally between two parallel glasses, one of which has rough surface. The pattern clearly reminds us of those of Witten-Sander diffusion-limited aggregation (DLA) model. The radius of gyration is measured to give the fractal dimension df=1.671 ±0.002, which is in good agreement with two-dimensional DLA. Our result implies that any random perturbations strong enough to overcome crystalline anisotropy always give rise to random DLA-like crystals, instead of otherwise regular dendritic crystals.",

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N2 - Irregular dendritic crystals of ammonium chloride (NH4C1) are grown two-dimensionally between two parallel glasses, one of which has rough surface. The pattern clearly reminds us of those of Witten-Sander diffusion-limited aggregation (DLA) model. The radius of gyration is measured to give the fractal dimension df=1.671 ±0.002, which is in good agreement with two-dimensional DLA. Our result implies that any random perturbations strong enough to overcome crystalline anisotropy always give rise to random DLA-like crystals, instead of otherwise regular dendritic crystals.

AB - Irregular dendritic crystals of ammonium chloride (NH4C1) are grown two-dimensionally between two parallel glasses, one of which has rough surface. The pattern clearly reminds us of those of Witten-Sander diffusion-limited aggregation (DLA) model. The radius of gyration is measured to give the fractal dimension df=1.671 ±0.002, which is in good agreement with two-dimensional DLA. Our result implies that any random perturbations strong enough to overcome crystalline anisotropy always give rise to random DLA-like crystals, instead of otherwise regular dendritic crystals.

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Irregular Fractal-Like Crystal Growth of Ammonium Chloride

Abstract

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