Tunable optical activity of plasmonic dimers assembled by DNA origami.
نویسندگان
چکیده
We investigate the optical response of gold nanorod (AuNR) dimers assembled in parallel on a DNA origami template. Plasmonic circular dichroism (CD) was found to be highly dependent on the orientation of the dimers relative to the DNA axis and the inter-rod distances. Dipole-dipole distances play a critical role in the induced plasmonic chirality. The orientation dependence of induced CD was further verified by AuNR/Au nanosphere (AuNS) heterodimers. The experimental results of the plasmonic CD agreed well with theoretical calculations.
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ورودعنوان ژورنال:
- Nanoscale
دوره 7 20 شماره
صفحات -
تاریخ انتشار 2015