Figure 1: Two types of ultrathin gold nanowire samples used for cold-welding experiments. Figure 2: Head-to-head and side-to-side cold-welding geometries. Figure 4: Side-to-side welding of two gold ...

One of the key engineering requirements in several applications is the control of friction. Under low pressures, films on metals lost due to friction or other effects are not replaced. Consequently, ...