HANNOVER MESSE 2019,
01 - 05 April
Research scientists at Leibniz Institute for New Materials have developed a sinter-free conductive ink based on gold and silver nanoparticles coated with conductive polymers. INMs hybrid inks enable inkjet printing of conductive structures without any thermal or UV treatments. The inks can be prepared in polar solvents such as water and alcohols, and many of their properties such as their density or viscosity can be customized. Testing samples will be available upon request.Conductive inks are widely used in to print electronics. They are suitable materials for flexible photovoltaics, lighting, touch screen electronics, wearable devices, large-area heaters, sensors, 3D conformal antennas, and health and biomedical applications, among others. Existing inks require annealing after inkjet printing before they become conductive.The new hybrid inks become conductive immediately upon drying, are mechanically flexible, and compatible to inkjet printing. The hybrid inks contain a small organic polymer fraction that helps to maintain its electrical conductivity, even if the substrate material is bent. This enables printing on almost any substrate, like foil, paper, or textiles, since the final annealing steps at relatively high temperatures are avoided.INM scientists have recently scaled the production of these hybrid inks to a level that is sufficient for small-scale production. The scaling of nanostructured products requires optimized processes in order to maintain quality while lower prices. Samples of the material are now available for testing applications.
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INM will be demonstrating flexible touch screens, which are produced by printing recently developed nanoparticle inks on thin plastic foils. These inks composed ...
For the proper functioning of touchscreens in smart phones or tablets, microscopically fine conductor lines are required on their surfaces. At the edges of the appliances, ...
For the development of transparent and flexible electrodes, INM is working with the process of electrospinning, a technique that produces ultra-fine fibers that ...