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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.

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Author: search.filters.author.Chang, LSubject: search.filters.subject.morphology

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    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.
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    Synthesis of diamond hexagonal nanoplatelets by microwave plasma chemical vapor deposition
    (2004-11-01)
    Lu, CA
    ;
    Chang, L
    ;
    材料科學與工程學系
    ;
    Department of Materials Science and Engineering
    Variation of diamond deposition with temperature gradient was studied using standing-up substrates embedded within the plasma ball in microwave plasma chemical vapor deposition (MPCVD). The substrate is a polycrystalline diamond coated with a 30-nm thick iron film before deposition. Surface morphologies of the deposits and their crystalline characteristics were characterized by scanning electron microscopy, transmission electron microscopy (TEM), and selected area diffraction. On the upper area of the specimen near the center of the plasma ball where the temperature is the highest (>1100 degreesC, formation of diamond nanoplatelets in hexagonal shape with a thickness of 2060 nm and side length of several hundreds of nanometers is found. In the middle region, diamond nanoplatelets with some iron nanoparticles are observed. Around the bottom region with low temperature near the edge of the plasma ball, nanodiamonds, Fe nanoparticles, and carbon nanotubes coexisted. The relative temperature distributions of diamond and carbon nanotube growth are briefly discussed. (C) 2004 Elsevier B.V. All rights reserved.