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首页> 外文期刊>Crystal growth & design >Growth Orientation Control of Co Nanowires Fabricated by Electrochemical Deposition Using Porous Alumina Templates
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Growth Orientation Control of Co Nanowires Fabricated by Electrochemical Deposition Using Porous Alumina Templates

机译：多孔氧化铝模板通过电化学沉积制造Co纳米线的生长取向控制

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摘要

This paper reports an experimental and theoretical analysis of preferential orientation growth of metallic nanowires during electrochemical deposition using nanochanneled templates. In this work pure Co nanowire arrays were synthesized by electrochemical deposition using porous anodized aluminum oxide templates. The nanowire arrays are found to exhibit near complete preferential single axial orientation. The preferential orientation changed with increasing the applied voltage from [0002]hcp, [101?0]hcp, [12?10]hcp to [110]fcc. The observation is explained in terms of nucleation thermodynamics and crystal growth kinetics. The analysis demonstrates that at low applied voltages, when the wire growth is slow, the wire orientation is dictated by the criterion of minimum total surface energy, with the close-packed surfaces forming the external facets of the crystals. At high applied voltages, when the wire growth is fast, the crystal axial orientation is dictated by the growth kinetics, i.e., directions of the fastest growth velocity. These criteria also apply well to the preferential growth of fcc metal nanowires during electrochemical deposition, e.g., Ag, Au, Cu, and Ni.]]>
机译：<！[cdata [ src ='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/cgdefu/2018/cgdefu.2018.18.issue-1/acs.cgd.7b01464/ 20171227 / Images / Medium / CG-2017-01464E_0008.GIF“>本文报告了使用纳米孔模板在电化学沉积期间金属纳米线优先取向生长的实验和理论分析。在该工作中，通过使用多孔阳极氧化铝氧化铝模板通过电化学沉积合成纯CO纳米线阵列。发现纳米线阵列显示出近完全的优先单轴取向。优先取向随着从施加电压的增加，从[0002] hcp ，[101'0] hcp ，[12？10] hcp 到[110] fcc 。在成核热力学和晶体生长动力学方面解释了观察。分析表明，在低施加的电压下，当线生长缓慢时，线取向由最小总表面能的标准决定，近填充表面形成晶体的外部刻面。在高施加的电压下，当线生长快速时，晶体轴向取向由生长动力学决定，即最快的生长速度的方向。这些标准也适用于电化学沉积期间FCC金属纳米线的优先生长，例如Ag，Au，Cu和Ni。]>

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  • 来源
    《Crystal growth & design》 |2018年第1期|共9页
  • 作者

    Mingliang Wang; Zhigang Wu; Hong Yang; Yinong Liu;

  • 作者单位

    School of Mechanical and Chemical Engineering The University of Western Australia Perth Western Australia 6009 Australia;

    School of Mechanical and Chemical Engineering The University of Western Australia Perth Western Australia 6009 Australia;

    School of Mechanical and Chemical Engineering The University of Western Australia Perth Western Australia 6009 Australia;

    School of Mechanical and Chemical Engineering The University of Western Australia Perth Western Australia 6009 Australia;

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  • 正文语种 eng
  • 中图分类 晶体学;
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