Self-assembly of tetrapod-shaped CdS nanostructures into 3D networks by a transverse growth process

被引:18
作者
Fu, Xiu-Li [1 ]
Peng, Zhi-Jian [2 ]
Li, Dan [1 ,2 ]
Zhang, Lei [1 ]
Xiao, Jing-Hua [1 ]
Li, Jiang-Yan [1 ]
Fang, Zhe-Yu [3 ]
机构
[1] Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China
[2] China Univ Geosci, Sch Engn & Technol, Beijing 100083, Peoples R China
[3] Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
基金
中国国家自然科学基金;
关键词
WAVE-GUIDE; HIERARCHICAL NANOSTRUCTURES; VAPOR-DEPOSITION; FIELD-EMISSION; ZNO NANOWIRES; NANORODS; TEMPERATURE; NANORIBBONS; FABRICATION; EVAPORATION;
D O I
10.1088/0957-4484/22/17/175601
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Spontaneous formation of 3D tetrapod-shaped CdS nanostructure networks has been achieved for the first time by vapor diffusion-deposition growth from CdS powders. The growth mechanism of the hexagonal and preferentially oriented CdS tetrapod-shaped nanostructures is a combination of the classic vapor-liquid-solid and vapor-solid processes, and the formation of a 3D network results from the spontaneous growths along the longitudinal and across the axial directions of the primarily formed CdS nanorods. Micro-photoluminescence measurements and near-field scanning optical microscopy investigations show that the synthesized CdS tetrapod networks have an excellent luminescence property and can be used as an optical waveguide cavities in which the guided light can be extremely confined.
引用
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页数:10
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