Surface characterization of resilience sheet as a packaging material for the metallic ink printing

Self-resilience properties of metal-elastomer interface is important for bio-interface devices for health monitoring. Metallic fine line traces on a silicone sheet by means of the metal ink deposition was needed with good print capability and adhesion. To meet these demands, surface treatment of the silicone sheet by scanning CO₂ laser was conducted to modify the surface property for the metal-elastomer interface fabrication. Micro texture with fibrous structures on the silicone surface was observed by the laser irradiation (typically ~7.2W/mm²), causing high hydrophilicity which was found to be suitable for the ink printing of metal particle solutions.