Invisicon® is a 2-step process to form a highly transparent conductive coating exhibiting exceptional characteristics such as durability, index matching, and anti-reflective properties.
All this is accomplished using a wide variety of deposition and patterning methods performed in air with water based inks onto virtually any substrate.
Carbon nanotube based inks dry to form a continuous electrically conductive network across a surface. The solvents in the ink evaporate and allow the self-assembly of nanotubes and bundles of nanotubes into larger filaments, unhindered by the presence of surfactants or other fillers.
Essentially the nanotubes are attracted to one another, due to their small diameter, and build a porous network. At this stage of processing, one could think of this layer as composite of nanotubes and air.
The layer of nanotube filaments can be infiltrated with a wide variety of materials to impart secondary properties to the conductive network. This infiltration step is not always needed, but depending on the application it is often beneficial, as it allows for engineering of this layer to adapt to other device layers or to impart characteristics like anti-reflective coatings. The infiltrating materials most often selected are polymers and metal oxides, deposited using any wet coating technique.
The advantage of this approach is that it allows independent engineering of the chemical, electrical, mechanical, and optical properties of the layer, while utilizing industry standard processing and materials technologies. No other conductive coating technology can offer this range of capabilities while offering simple processing at atmospheric conditions.