Characterisation of carbon nanotube films deposited by electrophoretic deposition
Characterisation of carbon nanotube films deposited by electrophoretic deposition
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DOI：
10.1016/j.carbon.2008.08.028
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发表时间：
2009-01-01
期刊：
影响因子：
10.9
通讯作者：
Boccaccini, Aldo R.
中科院分区：
文献类型：
--
作者：
Cho, Johann;Konopka, Katarzyna;Boccaccini, Aldo R.
电泳沉积（EPD）是一种制备具有理想厚度和良好宏观均匀性的碳纳米管（CNTs）涂层的简便方法。CNT沉积动力学由施加的电场和沉积时间控制，这又被证明与沉积产率和厚度线性相关。CNT膜的特点是通过使用一系列的技术，包括高分辨率扫描电子显微镜，纳米压痕和原子力显微镜。纳米压痕的结果显示，CNT沉积物的局部微观结构的差异，导致杨氏模量和硬度的变化，这是由于在CNT的堆积密度的差异，也观察到的AFM。基于Hamaker定律建立了碳纳米管电泳动力学的数学模型，模型预测结果与实验结果吻合较好。(C)2008爱思唯尔有限公司版权所有。
Electrophoretic deposition (EPD) was shown to be a convenient method to fabricate uniform coatings of carbon nanotubes (CNTs) with desired thickness and excellent macroscopic homogeneity. The CNT deposition kinetics are controlled by the applied electric field and deposition time which, in turn, prove to be linearly correlated with the deposition yield and thickness. The CNT films were characterised by using a range of techniques including high resolution scanning electron microscopy, nanoindentation and atomic force microscopy. Nanoindentation results revealed differences in the local microstructure of CNT deposits leading to variations of Young's modulus and hardness, which were ascribed to differences in the packing density of CNTs, as observed also by AFM. A mathematical model for the kinetic of EPD of CNTs based on Hamaker's law was proposed and the predictions of the model were shown to be in good agreement with experimental results. (C) 2008 Elsevier Ltd. All rights reserved.