Stressed Triangular Tessellations and Fibonacci Parastichous Spirals on Ag Core/SiO2 Shell Microstructures

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	Stressed Triangular Tessellations and Fibonacci Parastichous Spirals on Ag Core/SiO2 Shell Microstructures
	Li, CR ; Ji, AL ; Gao, L ; Cao, ZX
刊名	ADVANCED MATERIALS
	2009
卷号	21 期号:45 页码:4652
关键词	PATTERNS PHYLLOTAXIS DRIVEN GROWTH
ISSN号	0935-9648
通讯作者	Cao, ZX (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matters, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	Triangular tessellations and Fibonacci parastichous spirals were assembled via thermal stress engineering of Ag-core/SiO2-shell microstructures, for which the geometry and topology of the primary core/shells play a pivotal role. Patterns on slightly stressed spherical surfaces are simply triangular tessellations with 12 pentamers, whereas additional pentamer-heptamer chains emerge when more vertices are available (>360) on heavily stressed surfaces, all showing an excellent agreement with numerical solutions to the Thomson's problem. Defect free triangular lattice can be produced on a pierced spherical cap prepared via the draining effect. Remarkably, Fibonacci spirals of definite chirality, 3 by 5 through 13 by 21, and in both sinister and dexter forms, emerge on the conical supports. These results provide strong confirmation of the mechanical principle for phyllotaxis that the phyllotatic patterns are the least-elastic-energy configuration in a confining receptacle, and meanwhile demonstrate an effective path for the en masse fabrication of patterned structures on curved surfaces.
收录类别	SCI
资助信息	National Natural Science Foundation of China [10574147, 60621091, 10874153, 50772100]; National Basic Research Program of China [2009CB930800]; Chinese Academy of Sciences [KJCX2-YW-M07]; Civil Space Exploration Program of China
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/53138]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Li, CR,Ji, AL,Gao, L,et al. Stressed Triangular Tessellations and Fibonacci Parastichous Spirals on Ag Core/SiO2 Shell Microstructures[J]. ADVANCED MATERIALS,2009,21(45):4652.
APA	Li, CR,Ji, AL,Gao, L,&Cao, ZX.(2009).Stressed Triangular Tessellations and Fibonacci Parastichous Spirals on Ag Core/SiO2 Shell Microstructures.ADVANCED MATERIALS,21(45),4652.
MLA	Li, CR,et al."Stressed Triangular Tessellations and Fibonacci Parastichous Spirals on Ag Core/SiO2 Shell Microstructures".ADVANCED MATERIALS 21.45(2009):4652.