Articles
  • Laser microfabrication of alumina-silicon carbide nanocomposites
  • Kwang-Ryul Kima, Jae-Hoon Kima, Kwang-Ho Kimb, Koichi Niiharac and Young-Keun Jeongb,*
  • a Department of Electronics and Computer Engineering, Hanyang University, Seoul 133-791, Korea b National Core Research Center for Hybrid Materials Solution, Pusan National University, Busan 609-735, Korea c Department of Electrical Engineering, Nagaoka University of Technology Niigata 940-2188, JAPAN
Abstract
Alumina-silicon carbide nanocomposites have many potential applications, because of their excellent mechanical properties. However, they are very difficult to fabricate for MEMS devices due to the difficulty in machining these nanocomposites. Alumina-silicon carbide nanocomposites sintered by a pressureless-sintering process have been fabricated using state-of-theart laser microfabrication technology to find a way out of this difficulty. A femto-second laser with a specially equipped optical system was prepared and tested for nano and micro scale microfabrications of the material. The relationship between material ablation rate and energy fluence is theoretically investigated. In addition, the relationship is verified using cross-sectional SEM analysis of laser microfabricated alumina and alumina-silicon carbide samples. It is found that the nanocomposites are clearly fabricated using the femto-second laser and the surface roughness is acceptable for any MEMS parts.

Keywords: Nanocomposite, Femto-second laser, Microfabrication.

This Article

  • 2008; 9(4): 421-424

    Published on Aug 31, 2008

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