ON THE STUDY OF SILICON NANO-WIRES SELF-ASSEMBLED AS PARTICLES
Zhang Ze (张泽)a, S.T.Lee (李述汤)b
a Beijing Laboratory of Electron Microscopy, Center of Condensed Mater Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; b Center of Super-Diamond and Advanced Films & Department of Physics and Material Sciences, City University of Hong Kong, Hong Kong, China
Abstract Two different types of Silicon nano-wires (SiNWs) have been observed by scanning and transmission electron microscopy. One are of free standing SiNWs deposited uniformly on the surface of silicon substrates, and the other are self-assembled into special shaped particles. These SiNWs were synthesized by thermal evaporation of SiO amorphous powders without any metal catalysts in the temperature range of 900-1250℃. Growth history reveals that the self-assembled SiNWs are formed by original nucleation from the surface of amorphous SiOx particle matrices through phase separation and silicon precipitation followed by further growth through oxide-assisted vapor-solid reactions. The above results provide a solid experimental support for the oxide-assisted growth model of SiNWs.
Received: 01 January 2001
Revised: 07 March 2001
Accepted manuscript online:
A new direct band gap silicon allotrope o-Si32 Xin-Chao Yang(杨鑫超), Qun Wei(魏群), Mei-Guang Zhang(张美光), Ming-Wei Hu(胡明玮), Lin-Qian Li(李林茜), and Xuan-Min Zhu(朱轩民). Chin. Phys. B, 2022, 31(2): 026104.
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
