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. 2020 Jun 29;11(7):641. doi: 10.3390/mi11070641

Figure 9.

Figure 9

SEM images showing that the PDMS periodic nanodot template is important for the formation of fine Au nanospiral structures. When focusing on the circular dichroism, the condition with a template produced a peak that was 17 times larger than that for the condition without a template. (a) SEM image of a side view of the right-handed Au nanospiral structures evaporated on a PDMS nanodot template. (b) SEM image of a side view of the right-handed Au nanospiral structures evaporated without a template. (c) Circular dichroism spectra of the two cases with and without the template.