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  • 61.70  (1)
  • Laser digitiser  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    An integrated experimental approach to link a laser digitiser, a CAD/CAM system and a rapid prototyping system for biomedical applications (1998)
    Springer
    The international journal of advanced manufacturing technology 14 (1998), S. 110-115 
    Details
    ISSN: 1433-3015
    Keywords: Breast model ; Facial surgery ; Laser digitiser ; Rapid prototyping system
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract This study is carried out to develop a direct link between a laser digitiser and a rapid prototyping system for biomedical applications. Two CAD/CAM systems, DUCT and Pro-Engineer, are investigated and the DUCT system is found to be more suitable for this purpose. A laser digitiser is used to capture three-dimensional surface data for the object. With the aid of the CAD/CAM system, the data can be manipulated in a number of ways for display, modification and enhancement. In addition, the object scanned by the laser digitiser can be physically produced relatively quickly and accurately using StereoLithography Apparatus (SLA), a leading rapid prototyping system. Feasible and practical solutions to the problems encountered in the CAD surface model construction are proposed and illustrated. Two case studies, a facial and a breast model, are presented. Results show that this integrated approach can be applied effectively in the biomedical field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01322219
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  • 2
    Electronic Resource
    Electronic Resource
    Do oxygen molecules contribute to oxygen diffusion and thermal donor formation in silicon? (1989)
    Springer
    Applied physics 48 (1989), S. 219-228 
    Details
    ISSN: 1432-0630
    Keywords: 61.70 ; 66.30 ; 85.30
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract In- and out-diffusion experiments of oxygen in silicon indicate the existence of an oxygen-containing species diffusing much faster than interstitial oxygen at temperatures below about 700°C. The formation of oxygen-related thermal donors in the temperature range around 450°C also requires a fast diffusing species. The paper examines the possibility of this fast diffusing species beingmolecular oxygen, as had been suggested earlier. Special emphasis will be placed on experimental results which have become available since that time. These results allow one to relate thermal donor formation to the loss of interstitial oxygen and to oxygen precipitation. The role of carbon is also considered in this context.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619388
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    Paper (German National Licenses)
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