Browsing by Author "Cho, Shih-Yin"

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Fabrication and structural property of diamond nano-platelet arrays on {111) textured diamond film
(2012-05-01)
Wang, Wei-Lin
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Wang, Sheng-Ming
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Cho, Shih-Yin
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Chang, Li
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材料科學與工程學系
Diamond nano-platelet (DNP) arrays have been grown on {111} textured diamond film by using micro-wave plasma enhanced chemical vapor deposition system. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) have been used to characterize the growth behavior and micro-structure of DNP arrays on diamond film. According to the results of SEM and TEM images, DNP arrays only appear on the {111} surfaces of underlying diamond grains. Both DNPs and underlying diamond grains comprise penetration {111} twin structures. The growth of DNPs is the extension of the penetration {111} twins from underlying diamond grains. The accommodation and glide of stacking faults can also evolve into perfect {111} twin structures during the growth of DNPs. (C) 2012 Elsevier B.V. All rights reserved.
Growth of diamond nanoplatelets by CVD
(2008-07-01)
Chen, Hou-Guang
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Chang, Li
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Cho, Shih-Yin
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Yan, Jhih-Kun
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Lu, Chun-An
Hexagonal, single-crystalline, diamond nanoplatelets synthesized by microwave plasma (MP)CVD on Au-Ge alloy and nanocrystalline diamond (nc-diamond) film substrates, respectively, are reported. On the nc-diamond matrix, hexagonal diamond nanoplatelets can grow to a thickness of as little as approximately 10 nm. The effects of various processing parameters, such as methane concentration, microwave power, and gas pressure, on the growth of diamond nanoplatelets are explored. High-resolution transmission electron microscopy (HRTEM) reveals that the diamond nanoplatelets contain multi-parallel twins, and the side faces of the platelets exhibit {100}/{111} ridge-and-trough structure. Anisotropic growth of diamond nanoplatelet is believed to result from the side face structure of the twinned platelets and intensive plasma reaction.