The substrate for this solid surface of the device may be any suitable metal such As polished titanium or stainless steel or a polymer such as polyurethane, polyvinylpyrrolidone, silicone elastomers, polyolefins such as polyethylene or polypropylene, polytetrafluoroethylene, polyvinyl chloride, polyesters, fluoropolymers, polyacrylates (including polymethacrylates); minerals or ceramics such as hy