TECHNOLOGY FOCUS - METALLURGY - Preferred Component: The ink or paste composition is free of organic or polymeric resin. It comprises particles comprising nanoparticles and microparticles, where particles have particle size distribution curve comprising greater than or equal to 2 peaks in the particle size distribution curve, where one peak is associated with the nanoparticles and one peak is associated with the microparticles. The silver nanoparticulate material and conductive microparticulate material comprise different materials. The conductive microparticulate material comprises silver, copper, platinum, palladium, aluminum, tin, indium, bismuth, zinc sulfide, and/or indium tin oxide. It is in the form of flakes. The ink or paste composition comprises solvent carrier for the particles. It is prepared by mixing nanoparticles with microparticles. Preferred Parameter: The silver nanoparticulate material has an average diameter of less than 20, preferably less than 10 nm. The silver nanoparticulate material sinters with the microparticulate material at lower than 200 degrees C. The microparticulate material has average diameter larger than 1, but less than 100, preferably less than 50 mu m. The nanoparticulate and microparticulate materials are present in the same amount by weight. They are present according to a weight ratio of 1:1-3:1, preferably 2:1-3:1, respectively. The thickness of the film is greater than or equal to 1 mu m. After sintering the ink or paste composition, it has a thickness of greater than or equal to 1 mu m. The sintering temperature is 130-180 degrees C. Preferred Method: Curing further comprises sintering the silver nanoparticulate material and conductive microparticulate material, where curing takes less than 5 minutes. The ink or paste after curing forms a film. The nanoparticulate and microparticulate materials after curing are integrated. The method further comprises depositing the ink or paste onto a substrate via gravure printing, flexographic printing, offset printing, and/or screen printing. EXAMPLE - No suitable example given.