TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: (I) comprises: a viscosity lowering agent (up to 20 (preferably 5) wt.%); a surface tension lowering agent (up to 50 wt.%); stabilizing agent; and silver (up to 1.5, 30 or 70 wt.%). (I) has an average resistivity value of up to 2.5 x 10-4 Omega cm. Preferred Components: The predominant shape geometry is triangular plate shaped. The nanoplate has an aspect ratio of 2-25. The liquid is: an aqueous solution, which is water; or organic solvent, which is alcohol comprising ethanol or methanol. The liquid is capable of being readily evaporated from a substrate on which the ink is deposited. The surface tension lowering agent is diethylene glycol. The viscosity lowering agent is a polymer. The polymer is polyvinyl alcohol or polyvinyl pyrrolidone. The nanoplates are surface functionalized. The nanoplates are surface functionalized with a chemical and/or a biological functionalizing agent. The functionalizing agent is cytidine 5'-diphosphocholine, mercapto-hexanoic acid or mecapto-benzoic acid. The stabilizing agent is trisodium citrate. In the substrate, part or all of the liquid is removed after delivery of the ink onto the substrate; a conductive path is formed after the delivery of the ink onto the substrate; at least some of the nanoparticles and the liquid form the conductive path; and some of the nanoparticles form the conductive path by making contact with each other. EXAMPLE - Water (90 ml), trisodium citrate (TSC) (10 ml), sodium borohydride (6 ml) and poly(sodium styrene sulfonate) (5 ml) were combined in a beaker to produce a silver seeds. This solution was then transferred into the mixing chamber of a shear mixer. The motor was switched on at a tip speed of 23 meter/second and the solution was allowed to circulate for 2 minutes. Silver nitrate (AgNO3) (100 ml) was then introduced through an adapted inlet at a rate of 40 ml/minute using a peristaltic pump. After the AgNO3 addition was completed, the solution was allowed to circulate for approximately 5 minutes before being tapped off. During the initial recirculation the cooling system was switched on so that the growth was carried out at 25-30 degrees C. The seeds were allowed to age for 1 hour. Water (500 ml), seeds (30 ml) and ascorbic acid (7.5 ml) were combined and then added to the mixing chamber of a shear mixer to give silver nanoplates. This solution was then circulated at a shear rate of 1.68 x 105 second-1 for 2 minutes and AgNO3 (300 ml) was added at a rate of 100 ml/minute using a peristaltic pump. Two minutes after the addition of AgNO3 was completed, TSC (200 ml) was added using the peristaltic pump and the sol was allowed to recirculate for a further 2 minutes before being tapped off.