03.12.21
Conductive inks are a long-established technology, with silver flake-based inks used extensively in multiple industries, including solar panels and glucose test strips. However, technology rarely stands still, and there is extensive innovation within the conductive ink space. Particle-free inks are an especially promising example with multiple advantages and applications.
In a particle-free ink, a solvated metal salt is reduced in-situ to produce metal. In complete contrast to more conventional conductive inks, this means that the uncured particle-free ink is often transparent. The chemical reaction is induced by heat, light or plasma, and produces a smooth conductive metal layer.
Conductivity close to bulk metals
High conductivity is a key advantage of particle-free inks. Because the metal is formed in-situ, and the proportion of binder materials can be very low, conductivity can be as high as 80% of the bulk metal. This, of course, means that less
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