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Updated: Jan 3, 2026

Construction and Operation of a Light-driven Gold Nanorod Rotary Motor System
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A rotary plasmonic nanoclock.

Ling Xin1, Chao Zhou1, Xiaoyang Duan1,2

  • 1Max Planck Institute for Intelligent Systems, Heisenbergstrasse 3, D-70569, Stuttgart, Germany.

Nature Communications
|November 29, 2019
PubMed
Summary
This summary is machine-generated.

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Researchers developed a DNA-nanotechnology-based rotary plasmonic nanoclock. This device precisely controls nanoscale optical elements, enabling 16 configurations through DNA-powered rotation for advanced nanophotonic systems.

Area of Science:

  • Nanophotonics
  • DNA nanotechnology
  • Plasmonics

Background:

  • Controlling nanoscale optical elements is crucial for nanophotonics.
  • DNA nanotechnology offers precise spatial and temporal control for nanophotonic devices.
  • Current DNA-assembled devices have limited reconfiguration capabilities.

Purpose of the Study:

  • To demonstrate a DNA-assembled rotary plasmonic nanoclock with precise control.
  • To achieve directional and reversible 360° rotation among multiple defined states.
  • To explore autonomous operation using DNAzyme-RNA interactions.

Main Methods:

  • Utilizing DNA nanotechnology for bottom-up assembly of plasmonic nanostructures.
  • Designing a stator-rotor system with gold nanorods.

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  • Employing DNA fuels and DNAzyme-RNA interactions for controlled rotation.
  • Monitoring the rotation process using real-time optical spectroscopy.

    • Main Results:

    • Successfully demonstrated a rotary plasmonic nanoclock with a rotor gold nanorod.
    • Achieved directional and reversible 360° rotation among 16 well-defined configurations.
    • Verified autonomous rotation powered by DNAzyme-RNA interactions.
    • Real-time optical spectroscopy confirmed the rotation process.

    Conclusions:

    • DNA nanotechnology enables precise control over nanophotonic devices.
    • The rotary plasmonic nanoclock represents a significant advancement in reconfigurable nanophotonics.
    • This bottom-up assembly approach facilitates the development of sophisticated nanophotonic systems.