Solid Freeform Fabrication by Selective Area Laser Deposition

Laser chemical vapor deposition is capable of selective area deposition of thin fums at high spatial resolution, and in the present work this advantage was used to perform solid freeform fabrication (SFF). The pyrolytic selective area laser deposition of carbon is studied as a function of the scanning speed, the laser power, and the diameter of the focal spot on the substrate, at different pressures of the acetylene precursor in a gas phase SFF system. Carbon rods and rings have been made. SEM and Raman microprobe were used to characterize the deposits.