Control of leaf vascular patterning by polar auxin transport

An electrically conductive adhesive is described that is made of a porous substrate having numerous passages extending through it. The walls of the substrate defining the passages are plated with a conductive metal. This provides a continuous plating from one side of the porous substrate to the other. The remaining passage volume is substantially filled with an adhesive resin. The adhesive can be used to electrically connect two metal surfaces.