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  1. No Access

    Article

    Near-Infrared Emission from a Porous Silicon Device

    Visible to near-infrared emission is produced from a porous silicon device under current injection. The porous silicon emitter is fabricated by selectively under-etching a p-n junction. The device is rectifyin...

    J. Penczek, A. Knoesen, H. W. H. Lee, R. L. Smith in MRS Online Proceedings Library (2011)

  2. No Access

    Article

    Fatigue and proof testing of an aircraft auxiliary fuel tank

    R. L. Smith, T. Farquhar, D. Arola, S. Bhonsale, D. Sullivan in Experimental Techniques (2002)

  3. No Access

    Article

    The Relationship of Porous Silicon Film Morphology to The Photoluminescence Spectra

    Photoluminescence (PL) spectra are presented for porous silicon samples formed under various formation conditions in aqueous HF solutions. Formation conditions are chosen that effect maximal changes in morphol...

    John Penczek, R. L. Smith in MRS Online Proceedings Library (1993)

  4. No Access

    Article

    Investigation of Colloidal Si Prepared from Porous Silicon

    Si nanocrystallites have been prepared by ultrasonicating thin sections of porous silicon. The materials produced from 20 and 49 wt % HF are characterized and compared. Samples were characterized by optical ab...

    S. Berhane, S. M. Kauzlarich, K. Nishimura, R. L. Smith… in MRS Online Proceedings Library (1993)

  5. No Access

    Article

    Simulation of Sintering Experiments in Single-Mode Cavities

    The use of single-mode cavities has been recognized as a viable technique for sintering and joining ceramics and for creating microwave plasma for materials processing. It is often reported, however, that tuni...

    B. Chapman, M.F. Iskander, R. L. Smith, O. M. Andrade in MRS Online Proceedings Library (1992)

  6. No Access

    Article

    Lifetime statistics for single graphite fibres in creep rupture

    Experimental results are presented for the lifetime in creep rupture of single graphite fibres. The fibres were extracted from unsized, Hercules IM6 tows and were tested at a gauge length of 5 cm under standar...

    D. S. Farquhar, F. M. Mutrelle, S. L. Phoenix, R. L. Smith in Journal of Materials Science (1989)

  7. No Access

    Chapter and Conference Paper

    Ultrasonic Determination of Materials Characteristics

    It is increasingly important to ensure that not only are materials defect free but also that they possess the physical properties suitable for their intended use. Parameters such as yield strength and fracture...

    R. L. Smith, T. E. Dixon in Nondestructive Characterization of Materials (1989)

  8. No Access

    Chapter

    Statistical Inference About Stress Concentrations in Fibre-Matrix Composites

    It is shown how experimental data on composites and the component fibres may be used to make inferences about the stress concentration factors and length of stress overload region. The method employed is numer...

    L. C. Wolstenhoome, R. L. Smith, M. G. Bader in Developments in the Science and Technology… (1989)

  9. No Access

    Article

    A theoretical model of the formation morphologies of porous silicon

    In this paper a qualitative theoretical model describing the mechanism and formation morphology of porous silicon is presented. The model is based on the diffusion limited aggregation models of Witten and Sand...

    R. L. Smith, S. -F. Chuang, S. D. Collins in Journal of Electronic Materials (1988)

  10. No Access

    Chapter and Conference Paper

    Materials Characterization by Ultrasonic Attenuation Spectral Analysis

    The use of ultrasonic techniques for the characterization of microstructural features has attracted much attention in recent years. Although the measurement of ultrasonic parameters has been used for determini...

    R. L. Smith in Review of Progress in Quantitative Nondestructive Evaluation (1987)

  11. No Access

    Article

    An examination of statistical theories for fibrous materials in the light of experimental data

    We have analysed experimental data on the tensile strength of carbon fibres and bundles of parallel carbon fibres. These data are used to assess whether theoretical relations between the strengths of fibres an...

    A. S. Watson, R. L. Smith in Journal of Materials Science (1985)

  12. No Access

    Article

    Atlas never shrugged

    Over the past quarter century, public support for heavy industries has eroded and the United States has moved into a post-industrial era. Among those industries most heavily affected have been those involved i...

    R. L. Smith in Metallurgical Transactions B (1983)

  13. No Access

    Article

    Atlas never shrugged

    R. L. Smith in Metallurgical Transactions A (1983)

  14. No Access

    Article

    The random variation of stress concentration factors in fibrous composites

    R. L. Smith in Journal of Materials Science Letters (1983)

  15. No Access

    Article

    The correlation of ultrasonic attenuation, microstructure and ductile to brittle transition temperature in very low carbon steels

    A study of the frequency dependence of the ultrasonic attenuation and the ductile to brittle transition temperature as a function of microstructure has been carried out for a very low carbon (0.02 wt%) steel. ...

    R. L. Smith, W. N. Reynolds in Journal of Materials Science (1982)