纳米线
材料科学
制作
纳米结构
锌
纳米技术
热液循环
水热合成
吸附
微流控
水溶液
相(物质)
Crystal(编程语言)
硝酸锌
化学工程
化学
有机化学
医学
替代医学
工程类
病理
计算机科学
冶金
程序设计语言
作者
Jaebum Joo,Brian Y. Chow,Manu Prakash,Edward S. Boyden,Joseph M. Jacobson
出处
期刊:Nature Materials
[Springer Nature]
日期:2011-07-10
卷期号:10 (8): 596-601
被引量:332
摘要
Rational control over the morphology and the functional properties of inorganic nanostructures has been a long-standing goal in the development of bottom-up device fabrication processes. We report that the geometry of hydrothermally grown zinc oxide nanowires can be tuned from platelets to needles, covering more than three orders of magnitude in aspect ratio (~0.1-100). We introduce a classical thermodynamics-based model to explain the underlying growth inhibition mechanism by means of the competitive and face-selective electrostatic adsorption of non-zinc complex ions at alkaline conditions. The performance of these nanowires rivals that of vapour-phase-grown nanostructures, and their low-temperature synthesis (<60 °C) is favourable to the integration and in situ fabrication of complex and polymer-supported devices. We illustrate this capability by fabricating an all-inorganic light-emitting diode in a polymeric microfluidic manifold. Our findings indicate that electrostatic interactions in aqueous crystal growth may be systematically manipulated to synthesize nanostructures and devices with enhanced structural control.
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