A rotary plasmonic nanoclock.

Abstract:

:One of the fundamental challenges in nanophotonics is to gain full control over nanoscale optical elements. The precise spatiotemporal arrangement determines their interactions and collective behavior. To this end, DNA nanotechnology is employed as an unprecedented tool to create nanophotonic devices with excellent spatial addressability and temporal programmability. However, most of the current DNA-assembled nanophotonic devices can only reconfigure among random or very few defined states. Here, we demonstrate a DNA-assembled rotary plasmonic nanoclock. In this system, a rotor gold nanorod can carry out directional and reversible 360° rotation with respect to a stator gold nanorod, transitioning among 16 well-defined configurations powered by DNA fuels. The full-turn rotation process is monitored by optical spectroscopy in real time. We further demonstrate autonomous rotation of the plasmonic nanoclock powered by DNAzyme-RNA interactions. Such assembly approaches pave a viable route towards advanced nanophotonic systems entirely from the bottom-up.

journal_name

Nat Commun

journal_title

Nature communications

authors

Xin L,Zhou C,Duan X,Liu N

doi

10.1038/s41467-019-13444-3

subject

Has Abstract

pub_date

2019-11-27 00:00:00

pages

5394

issue

1

issn

2041-1723

pii

10.1038/s41467-019-13444-3

journal_volume

10

pub_type

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