Archimedean Voronoi spiral tilings
Archimedean Voronoi spiral tilings
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阿基米德沃罗诺伊螺旋瓷砖
DOI:
10.1088/1751-8121/aa9ada
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Yoshikazu Yamagishi and Takamichi Sushida
中科院分区:
文献类型:
--
作者:
Long;Hongwei.; Ma;Chunhua. and Shimizu;Yasutaka.;Yoshikazu Yamagishi and Takamichi Sushida
We study the transition of the number of spirals (called parastichy in the theory of phyllotaxis) within a Voronoi tiling for Archimedean spiral lattices. The transition of local parastichy numbers within a tiling is regarded as a transition at the base site point in a continuous family of tilings. This gives a natural description of the quasiperiodic structure of the grain boundaries. It is proved that the number of tiles in the grain boundaries are denominators of rational approximations of the argument (called the divergence angle) of the generator. The local parastichy numbers are non-decreasing functions of the plastochron parameter. The bifurcation diagram of local parastichy numbers has a Farey tree structure.