Sintering of printed nanoparticle structures using laser treatment

Petri Laakso, Saara Ruotsalainen, Eerik Halonen, Matti Mäntysalo, Antti Kemppainen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

17 Citations (Scopus)

Abstract

Printed intelligence is a promising new technology to produce low-cost electronics. Non-conductive circuits can be printed using nanoscale metal particle inks. Due to the nanoscale size of the particles, the typical sintering temperatures of 100-300 °C are only a fraction of the macroscopic melting point of the corresponding materials, thus allowing the use of paper or plastic substrates. Sintering of printed nanoparticle structures using laser treatment has been investigated at VTT. Laser sintering can be utilized in manufacturing of printed conductor structures such as antennas, circuits and sensors. A drop-on demand printer was used to print patterns with metallo-organic silver nanoparticles on a flexible polyimide substrate. Laser sintering was made with a 940 nm CW fiber coupled diode laser. Process was optimized using different laser power levels, line separation and repetition rounds. Conductivity of laser sintered samples was compared to conductivity of samples sintered in convection oven.
Original languageEnglish
Title of host publicationProceedings of ICALEO 2009: 28th International Congress on Applications of Lasers and Electro-Optics
Place of PublicationOrlando
PublisherLaser Institute of America
Pages1360-1366
Publication statusPublished - 2009
MoE publication typeA4 Article in a conference publication
Event28th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2009: - Orlando, United States
Duration: 2 Nov 20095 Nov 2009

Conference

Conference28th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2009:
Abbreviated titleICALEO 2009
CountryUnited States
CityOrlando
Period2/11/095/11/09

Keywords

  • laser
  • nanoparticle
  • sintering

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    Laakso, P., Ruotsalainen, S., Halonen, E., Mäntysalo, M., & Kemppainen, A. (2009). Sintering of printed nanoparticle structures using laser treatment. In Proceedings of ICALEO 2009: 28th International Congress on Applications of Lasers and Electro-Optics (pp. 1360-1366). Laser Institute of America.