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A Nanosized Silica Sunflower

A Nanosized Silica Sunflower

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A Nanosized Silica Sunflower

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  1. A Nanosized Silica Sunflower This scanning electron microscopy image represents an inorganic but vivid silica SUNFLOWER prepared by microwave plasma enhanced chemical vapor deposition (MPECVD) in a stainless vacuum chamber. If you take a look at the 100-nm-long white scale bar beneath the picture, you will be surprised at how tiny this sunflower is. The sunflower-like morphology can be attributed to the unique assembly of one-dimensional silica (SiOx) nanowires which have very large aspect ratios because of the vapor-liquid-solid (VLS) growth mechanism. The picture was provided by Dr. Ming-Shien Hu who did the CVD experiment in 2004 at Advanced Materials Laboratory led by Drs. Li-Chyong Chen (CCMS, NTU) and Kuei-Shien Chen (IAMS, AS). Submitter & Editor: Dr. Chia-Liang Sun (Institute of Atomic and Molecular Science, Academia Sinica, Taipei, Taiwan; E-mail: clsun@ms.ntu-ccms.ntu.edu.tw)

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