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  • 1
    Electronic Resource
    Electronic Resource
    Applied physics 57 (1993), S. 97-100 
    ISSN: 1432-0630
    Keywords: 61.40 ; 68.70 ; 81.10 ; 82.40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Using a unique fiber-growth control mechanism and high-reaction pressures (〉1 bar), silicon fibers were grown by laser-assisted chemical vapor deposition (LCVD) from silane near the focal point of a cw Nd:YAG laser beam. Fiber-growth rates ranged from 〈1 to 500 μm/s and fiber tip temperatures from 525 to 1412° C. At low fibertip temperatures (〈600° C) silicon fibers yielding glassy fracture were obtained. Some crystallinity was observed by X-ray diffraction. Polycrystalline silicon fibers were formed at intermediate temperatures, single-crystal silicon fibers at high-laser intensities and high-tip temperatures. The single crystal LCVD silicon fibers were formed by a vapor-liquid-solid (VLS) mechanism. Single-crystal VLS-LCVD silicon fibers were also obtained from liquid silicon-metal alloys by initiating fiber growth from the end of thin palladium, gold and platinum wires.
    Type of Medium: Electronic Resource
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