<link rel="stylesheet" href="styles.cf390c6bfbe7555f.css">

學術出版;;Publications

Permanent URI for this communityhdl:11536/1

收集所有交通大學研究人員與學生個人或團體所發表之各項學術著作，涵蓋期刊論文、教師專書、學位論文等項。;;Collections of Publications of NCTU Researchers and Students Like Journal Papers and Thesis.

Browse

🏛️國立陽明交通大學機構典藏

Author: search.filters.author.Chen, HGSubject: search.filters.subject.diamond crystal

Search Results

Now showing 1 - 3 of 3
  • Thumbnail Image
    Item type:Item,
    Diamond deposition on Au/amorphotis Si thin films
    (2004-04-01)
    Kao, CK
    ;
    Yan, JK
    ;
    Chang, L
    ;
    Cho, SY
    ;
    Chen, HG
    Au/amorphous Si/SiO2/Si structure was used as substrate for diamond deposition by microwave plasma CVD. The Au-Si phase diagram shows a eutectic point at 363 degreesC. At deposition temperatures of 700-800 degreesC, the Au and amorphous Si films were alloyed as liquid during deposition, which resulted in formation of an array of single crystalline Si whiskers. Microstructural characterization shows that the Si whiskers have a diameter in the range of 50 nm-5 mum with facet on the top surface. The Si whiskers are shown to be oriented along <311> directions. Diamond particles deposited are found only on top of the Si whiskers. The diamond particles can be either of polycrystalline or single crystalline characteristics. (C) 2004 Elsevier B.V. All rights reserved.
  • Thumbnail Image
    Item type:Item,
    Diamond nucleation on Ni3Al substrate using bias enhanced nucleation method
    (2005-02-01)
    Chen, HG
    ;
    Chang, L
    ;
    材料科學與工程學系
    ;
    Department of Materials Science and Engineering
    Diamond deposition with positive and negative bias enhanced nucleation (BEN) pretreatments on mirror-polished polycrystalline Ni3Al substrates has been investigated, respectively. It was found that diamond deposition on the substrates under both biasing exhibited significant variations among grains of different orientations. The substrate surface was found to be rough in the case of negative biasing, whereas it was smooth in the case of positive biasing. Thus, the correlation of the crystallographic orientation of grains on the samples with the diamond nucleation behavior was systematically characterized for the case of positive biasing by electron backscattered diffraction method with scanning electron microscopy. Diamond deposition on Ni3Al grains near (111) orientation results in higher nucleation densities, while the densities are low on (110) and (100) oriented grains. Also, the interfacial microstructure between diamond deposited and Ni3Al was characterized by cross-sectional transmission electron microscopy. (C) 2004 Elsevier B.V. All rights reserved.
  • Thumbnail Image
    Item type:Item,
    The orientation effect of silicon grains on diamond deposition
    (2005-11-01)
    Su, YH
    ;
    Chang, L
    ;
    Chen, HG
    ;
    Yan, JK
    ;
    Chou, T
    Diamond deposition on mirror-polished polycrystalline silicon substrates which have grains in various orientations has been investigated using electron backscatter diffraction (EBSD) method with scanning electron microscopy (SEMI). Diamond was deposited by microwave plasma chemical vapor deposition with application of a negative bias voltage oil the substrate. The evidence from systematic SEM observations shows that silicon orientation determined by EBSD has a strong effect on diamond nucleation. In general, the diamond nucleation density on Si grains oriented close to < 100 > is the highest, while it is the lowest for those grains close to < 111 >, under the same experimental conditions for deposition. The same phenomena have been observed in the range of methane concentration from 2% to 4% in hydrogen. (c) 2005 Elsevier B.V. All rights reserved.