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麦立强

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期刊论文

Orientated Langmuir-Blodgett Assembly of VO2 Nanowires

麦立强

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摘要/描述

We report Langmuir-Blodgett (LB) based assembly of vanadium dioxide (VO2) nanowires. VO2 nanowires were functionalized with stearic acid(SA) and cetyltrimethyl ammonium bromide (CTAB) and then spread on the surface an aqueous phase in a LB trough. Surface pressure-area (π-A) isotherms were recorded on the LB trough and show hysteretic behavior. Scanning electron microscopy (SEM) investigations of morphology and alignment of the VO2 nanowire films transferred at different points on the π-A curve demonstrate with increasing surface pressure there is a transition from well-separated domains of nanowires to compact and locally-ordered nanowire monolayers, while aggregates raft-like nanowire structures remain after expansion. Interestingly, X-ray diffraction (XRD) studies show that VO2 nanowire LB films exhibits (00l) crystal plane orientation, which was attributed to preferential coordination of SA and CTAB-SA complex to (001) surface of VO2 nanowires thereby driving this orientation.

【免责声明】以下全部内容由[麦立强]上传于[2009年06月13日 05时35分50秒],版权归原创者所有。本文仅代表作者本人观点,与本网站无关。本网站对文中陈述、观点判断保持中立,不对所包含内容的准确性、可靠性或完整性提供任何明示或暗示的保证。请读者仅作参考,并请自行承担全部责任。

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