How to Cut a Laser to Particle Size

Laser powder evaporation is a powerful technique, making use of focused laser beams to create a multiplicity of powder particles that will not agglomerate, or collect into a rounded mass. Through laser powder evaporation, you can cut a wide variety of substances (oxides, metals, composites) into nano- and micro-sized particles. Laser cutting offers a standardized process that can be altered, depending on the type of material, to obtain specific particle properties. Lasers should only be operated by experienced professionals; do not try this at home.

Things You'll Need

  • Material to be cut
  • Beam source, ie CO2 laser
  • Evaporating chamber
  • Scraper
  • Filtering chamber
  • Gas extraction fan
  • Metal bag filter
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Instructions

    • 1

      Set up for laser cutting. Connect the evaporating chamber, which is the enclosed, constantly-rotating stage on which material will be placed, to the filtering chamber through a system of tightly connected glass tubes. Between the evaporating and filtering chambers, connect a gas extraction fan, which will facilitate the constant flow of newly-cut particles into the filtering chamber. Finally, install the metal bag filter, which will collect your particles, in the filtering chamber.

    • 2

      Turn on carrier gas source (i.e. argon) and connect it to the evaporating chamber. The carrier gas will travel, along with the newly cut particles, from the evaporating chamber into the filtering chamber, conducted by the gas extraction fan.

    • 3

      Focus the laser beam on the material to be cut. The material will evaporate and travel into the filtering chamber.

    • 4

      Collect the newly-cut particles, which will accumulate on the metal filter.

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