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Related Experiment Video

Updated: May 28, 2026

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale
08:17

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

Published on: May 25, 2016

Nanomechanical actuation driven by light-induced DNA fuel.

Kilho Eom1, Huihun Jung, Gyudo Lee

  • 1Institute for Molecular Sciences, Seoul 127-749, Republic of Korea.

Chemical Communications (Cambridge, England)
|October 15, 2011
PubMed
Summary

Light can control tiny machines using DNA. Researchers demonstrated reversible nanomechanical actuation of microcantilevers by manipulating DNA

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Area of Science:

  • Nanotechnology
  • Biophysics
  • Materials Science

Background:

  • DNA can form complex structures like i-motifs.
  • Nanomechanical systems offer precise control at small scales.

Purpose of the Study:

  • To demonstrate light-driven nanomechanical actuation using DNA.
  • To explore control mechanisms for DNA-actuated devices.

Main Methods:

  • Functionalizing microcantilevers with i-motif DNA chains.
  • Utilizing light irradiation to induce DNA conformational changes.
  • Investigating the effects of DNA hybridization and ionic concentration on actuation.

Main Results:

  • Achieved reversible nanomechanical actuation of microcantilevers.

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Last Updated: May 28, 2026

Free-form Light Actuators &#8212; Fabrication and Control of Actuation in Microscopic Scale
08:17

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

Published on: May 25, 2016

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging
08:40

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Published on: March 13, 2019

Folding and Characterization of a Bio-responsive Robot from DNA Origami
07:59

Folding and Characterization of a Bio-responsive Robot from DNA Origami

Published on: December 3, 2015

  • Demonstrated light-induced conformational changes in surface-bound i-motif DNA.
  • Showed that actuation can be tuned by DNA hybridization and ionic strength.

    • Conclusions:

    • Light-responsive i-motif DNA can drive nanomechanical systems.
    • DNA hybridization and ionic concentration are effective control parameters for light-actuated nanodevices.
    • This work opens possibilities for light-controlled nanoscale devices.