Synthesis of flower-like silica microstructures by a simple thermal evaporation method

被引：0
|
作者：
Zhu, Guang [1 ]
Zou, Xiaoping [1 ]
Cheng, Jin [1 ]
Wang, Maofa [1 ]
Su, Yi [1 ]
机构：
[1] Beijing Informat Sci & Technol Univ, Beijing Key Lab Sensor, Beijing 100101, Peoples R China
来源：
2008 INTERNATIONAL CONFERENCE ON OPTICAL INSTRUMENTS AND TECHNOLOGY: MEMS/NEMS TECHNOLOGY AND APPLICATIONS | 2009年 / 7159卷
关键词：
flower-like; silica microstructures; thermal evaporation; INDIVIDUAL CARBON NANOTUBES; NANOSTRUCTURES; NANOWIRES; GROWTH; CONDUCTIVITY; OXIDE;
D O I：
10.1117/12.811884
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Novel flower-like silica microstructures have been synthesized through heating silicon, silicon monoxide and active carbon mixed powders under an H-2/Ar (3%) atmosphere at 1050 degrees C without assistance of any metal catalyst. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM) and energy dispersive x-ray spectrometer (EDS) analyses reveal that the wires are amorphous and consist only of silicon oxide, generated from the reaction of CO with SiC. A possible growth model based on both of vapor-solid (VS) and the Oxide-assisted growth (OAG) mechanism has been supposed here to explain this phenomenon.
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页数：7
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