Figure 9.
Top: (a) SEM and (b) temperature-dependent four-terminal resistance down to ∼260 mK of a single gold-sputtered K. hibernalis silk fiber. Middle: (c) electrical junctions from gold-sputtered K. hibernalis silk fiber and (d) temperature-dependent four-terminal junction resistance between two crossed gold-sputtered silk fibers. Bottom: (e) SEM of the gold-sputtered N. clavipes dragline silk fibers pressed against the sample in the mandolin method. The gold-sputtered silk fiber at the edges of the sample was broadened by ∼10% due to the tension. (f) Temperature-dependent four-terminal resistance of the resistive superconducting transition (∼12 K) in κ-(BEDT-TTF)2Cu[N(CN)2]Br measured by the mandolin technique.