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Related Experiment Video

Updated: Aug 17, 2025

Planar and Three-Dimensional Printing of Conductive Inks
10:49

Planar and Three-Dimensional Printing of Conductive Inks

Published on: December 9, 2011

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Amphiphilic Silver Nanoparticles for Inkjet-Printable Conductive Inks.

Irena Ivanišević1, Marin Kovačić1, Marko Zubak1

  • 1Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, Croatia.

Nanomaterials (Basel, Switzerland)
|December 11, 2022
PubMed
Summary

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Researchers developed a novel silver nanoparticle ink for flexible electronics printing. This conductive ink achieves good wetting on paper and plastic substrates, enabling printed circuits with low resistance.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemistry

Background:

  • Inkjet printing of flexible electronics requires conductive inks with excellent surface wetting properties.
  • Current conductive inks face challenges in adhering to diverse flexible substrates like paper and plastics.
  • Developing advanced functional inks is crucial for scalable flexible electronics manufacturing.

Purpose of the Study:

  • To develop and characterize an amphiphilic silver nanoparticle-based ink for inkjet printing on flexible substrates.
  • To investigate the synthesis and properties of silver nanoparticles modified for enhanced dispersibility and surface adhesion.
  • To demonstrate the application of the developed ink in fabricating functional flexible electronic devices.

Main Methods:

  • Two-step wet chemical synthesis of amphiphilic silver nanoparticles, involving poly(acrylic acid) capping followed by amidation with 3-morpholynopropylamine (MPA).
Keywords:
amphiphilic particlesconductive inkdensity functional theoryflexible electronicsinkjet printingsilver nanoparticles

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  • Physicochemical and rheological characterization of nanoparticle dispersions in various solvents.
  • Inkjet printing of the formulated silver nanoparticle ink onto paper, coated PET, and uncoated PI substrates.
  • Intense pulsed light (IPL) sintering for conductivity enhancement.
  • Density functional theory (DFT) calculations to understand particle-dispersion medium interactions.

    • Main Results:

    • Amphiphilic silver nanoparticles with controlled size and good dispersibility were successfully synthesized.
    • A stable ink formulation with 10 wt% silver nanoparticles was achieved, demonstrating good printability on diverse flexible substrates.
    • Low sheet resistances were obtained: 3.85 Ω sq-1 (paper), 0.57 Ω sq-1 (PET), and 19.7 Ω sq-1 (PI) after IPL sintering.
    • Successful fabrication of a simple flexible LED circuit using the printed nanoparticle ink.

    Conclusions:

    • The developed amphiphilic silver nanoparticle ink overcomes wetting challenges for inkjet printing on flexible substrates.
    • The ink enables the fabrication of low-resistance conductive patterns on various materials, including paper and plastics.
    • This work presents a viable approach for manufacturing flexible electronics using cost-effective and scalable inkjet printing technology.