1995 / Solid Freeform Fabrication Proceedings
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Author James Maxwell, Joseph Pegna, Eric Hill, Rensselaer Polytechnic Institute
Source Solid Freeform Fabrication Proceedings, 1995, pp 143-150
Abstract Gas-phase Selective Area Laser Deposition (SALD) is a useful freeform fabrication tool for the prototyping of simple three-dimensional microstructures. Using this method, slender graphite and nickel rods of various diameters were grown from ethylene and nickel tetracarbonyl, respectively. By varying the laser power during growth, tapered cone-like structures were also generated. Rod diameters and material morphology were correlated with the SALD process parameters to demonstrate the mechanisms through which steady-state rod growth occurs--and through which it can be controlled. Rods, and other similar microstructures, have many useful applications, and are preliminary building blocks for further modelling and development of the SALD process as a micromachining tool. Keywords: Laser chemical vapor deposition, LCVD, SALD, 3-dimensional growth, micro fabrication, rapid prototyping, micro electro mechanical Systems, pyrolysis, graphite, nickel, rods, cones. (Auth abstract) [References: 14]
Solid Freeform Fabrication Proceedings can be obtained from: The Solid Freeform Fabrication Symposium
or contact:
The University of Texas at Austin
Laboratory for Freeform Fabrication / Texas Materials Institute
Mechanical Engineering Dept.
c/o The Solid Freeform Fabrication Symposium
MC C2200
Austin, TX 78712-1063 USA
512-471-3026; 512-471-7681 FX; Email: sffsymp@uts.cc.utexas.edu