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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Synthesis of aligned ripple-like and helical structure silica fibres
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Synthesis of aligned ripple-like and helical structure silica fibres

机译：排列排列的波纹状和螺旋结构二氧化硅纤维的合成

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Highly aligned ripple-like silica fibres, as well as helical structure fibres have been synthesized by a chemical vapor deposition technique. The as-grown product was characterized by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, transmission electron microscopy and selected-area electron diffraction. The results showed that the fibres were amorphous in nature with average diameters of 800 nm and lengths of several hundred micrometers. The formation of the fibres could be explained by the vapor-solid (VS) mechanism and the helical structure might be formed by a perturbation during the growth of the ripple-like fibres. The photoluminescence (PL) spectrum of the silica fibres showed two strong. blue emission peaks at 450 nm (2.75 eV) and 415 nm (2.99 eV) under excitation at 260 nm. (C) 2007 Elsevier B.V. All rights reserved.
机译：通过化学气相沉积技术已经合成了高度取向的波纹状二氧化硅纤维以及螺旋结构纤维。通过X射线衍射，扫描电子显微镜，能量色散X射线光谱，透射电子显微镜和选择区域电子衍射来表征所生长的产物。结果表明，该纤维本质上是无定形的，平均直径为800 nm，长度为几百微米。纤维的形成可以通过气固（VS）机理来解释，而螺旋结构可以由波纹状纤维的生长过程中的扰动来形成。二氧化硅纤维的光致发光（PL）光谱显示出两个强光。在260 nm激发下，蓝色发射峰在450 nm（2.75 eV）和415 nm（2.99 eV）处出现。 （C）2007 Elsevier B.V.保留所有权利。

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