Fig. 5. Multicycle hysteresis and reliability strain performance.

a, b Multicycle hysteresis of the 33 nm (a) and 70 nm (b) Au coatings on the µserpentine. Looking only at these graphs, the performance of both coatings is similar. When examining the larger film fracturing samples from Fig. 4e, a large strain spiking signature can be seen (c). d Reliability measurements during fatigue testing for both the 33- and 70 nm Au coatings, further demonstrating the choice of 33 nm as an optimized coating thickness for this work.