Journal of Nanoparticle Research

, Volume 12, Issue 3, pp 931–938

Direct writing of conductive silver micropatterns on flexible polyimide film by laser-induced pyrolysis of silver nanoparticle-dispersed film

  • Mohammod Aminuzzaman
  • Akira Watanabe
  • Tokuji Miyashita
Research Paper

DOI: 10.1007/s11051-009-9643-9

Cite this article as:
Aminuzzaman, M., Watanabe, A. & Miyashita, T. J Nanopart Res (2010) 12: 931. doi:10.1007/s11051-009-9643-9

Abstract

This article describes fabrication of Ag micropatterns on a flexible polyimide (PI) film by laser direct writing using an Ag nanoparticle-dispersed film as a precursor. Ag micropatterns are characterized by optical microscopy, atomic force microscopy (AFM), field emission scanning electron microscopy (FE-SEM), surface profilometry, and resistivity measurements. The line width of Ag micropatterns can be effectively controlled by altering the experimental parameters of laser direct writing especially laser intensity, objective lens, and laser beam scanning speed etc. Using an objective lens of 100× and laser intensity of 170.50 kW/cm2, Ag micropatterns with a line width of about 6 μm have been achieved. The Ag micropatterns show strong adhesion to polyimide surface as evaluated by Scotch-tape test. The resistivity of the Ag micropatterns is determined to be 4.1 × 10−6 Ω cm using two-point probe method. This value is comparable with the resistivity of bulk Ag (1.6 × 10−6 Ω cm).

Keywords

Flexible electronics Polymer Laser direct writing Nanometal ink Micropatterns Resistivity Nanomanufacturing 

Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • Mohammod Aminuzzaman
    • 1
  • Akira Watanabe
    • 1
  • Tokuji Miyashita
    • 1
  1. 1.Institute of Multidisciplinary Research for Advanced Materials (IMRAM)Tohoku UniversitySendaiJapan