Fig. 3

Set of SEM images of the three NR arrays studied in this work. Column (i) refers to the structures on Si/Cr before the transfer, while (ii-iv) show the SEM images on PDMS. The scale bar for all images is 400 nm, and the red lines outline the shapes of single NRs within their grating. (d–f) show the statistical evaluation of all NRs shown in (a–c), where the diameter here refers to the distance between the NRs’ outer walls