Methods, devices, systems andor articles related to techniques for forming a graphene film on a substrate, and the resulting graphene layers and graphenated substrates are generally disclosed. The opener broadly includes a drawbar assembly, a disc assembly including a coulter disc and a gauge wheel, a seed boot, a fertilizer injector wing, a firming wheel assembly, and a closing wheel assembly. A start position of the first magnification processing step and a start position of the second magnification processing step are dislocated relatively to each other so that phases of pixel positions in the first and second magnification processing steps are reversed to each other. The suspension system includes two spool valves in fluid communication with the first and second cylinders and intermediate the first and second cylinders. Therefore, the critical current density of parallel superconductor wires such as stacked superconductor wires may be measured without applying current to the superconductor wires directly. Expandable foam can be injected into the gaps between the framing members and the foam core member, in lieu of the foam pieces, to form the bond between the framing members and the foam core member.