Applied products of semiconductor laser Applied products of semiconductor laser

Metal nano-ink sintering | Applied products of semiconductor lasers

Metal nano-ink is a promising material for applications in the printed electronics field. Metallic particles with a size less than 100 nm are called as nanoparticles. One of the features is a significant decrease in melting point. Once the metal nanoparticle is irradiated by infrared laser, the infrared laser is absorbed by a phenomenon called plasmon and the metal nanoparticle is heated. So, the metal nano-ink can be sintered by laser.

Advantages of laser sintering

Application for printed electronics

Heating furnace which is the conventional method has problems of longer sintering time and huge heat effect to the substrate. On the other hand, laser sintering can raise the temperature at high speed, so that not only high speed sintering is possible. but also, in case the plastic substrate is used, the heat effect to the substrate can be decreased because the plastic substrate does not absorb laser.

  • Usable for continuous processing
  • Smaller footprint compared to heating furnace
  • Significant reduction of power consumption compared to heating furnace

Expected applications

Printed electronics

  • MID (Molded Interconnect Device)
  • Forming of electrostatic shield layers on plastic substrate etc.

Movie example

Laser sintering of metal nano-ink

  • Stable and highly reliable sintering
  • No need of warm-up that conventional methods require

*Sample courtesy: C-INK Co., Ltd.

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