Wong, C. P.

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    Conformally coating vertically aligned carbon nanotube arrays using thermal decomposition of iron pentacarbonyl
    (Georgia Institute of Technology, 2012-05) Hildreth, Owen ; Cola, Baratunde A. ; Graham, Samuel ; Wong, C. P.
    Conformally coating vertically aligned carbon nanotubes (v-CNT) with metals or oxides can be difficult because standard line-of-sight deposition methods, such as dc sputter coating and electron-beam evaporation, are hindered by the low mean-free-path with
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    Synthesis of High-Quality Vertically Aligned Carbon Nanotubes on Bulk Copper Substrate for Thermal Management
    (Georgia Institute of Technology, 2010-05) Lin, Wei ; Zhang, Rongwei ; Moon, Kyoung-Sik ; Wong, C. P.
    Vertically aligned carbon nanotubes (VACNTs) grown on bulk copper substrate are of great importance for real-life commercial applications of carbon nanotubes (CNTs) as thermal interface materials in microelectronic packaging. However, their reproducible syntheses have been a great challenge so far. In this study, by introducing a well-controlled conformal Al₂O₃ support layer on the bulk copper substrate by atomic layer deposition, we reproducibly synthesized VACNTs of good alignment and high quality on the copper substrate. The alignment and the quality were characterized by scanning electron microscope, transmission electron microscope, and Raman spectroscopy. The key roles of the conformal Al₂O₃ support layer by atomic layer deposition are discussed. This progress may provide a real-life VACNT application for thermal management.