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A rotary plasmonic nanoclock

Author

Listed:
  • Ling Xin

    (Max Planck Institute for Intelligent Systems)

  • Chao Zhou

    (Max Planck Institute for Intelligent Systems)

  • Xiaoyang Duan

    (Max Planck Institute for Intelligent Systems
    University of Heidelberg)

  • Na Liu

    (Max Planck Institute for Intelligent Systems
    University of Heidelberg)

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.

Suggested Citation

  • Ling Xin & Chao Zhou & Xiaoyang Duan & Na Liu, 2019. "A rotary plasmonic nanoclock," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-13444-3
    DOI: 10.1038/s41467-019-13444-3
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