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Related Experiment Video

Updated: Jan 21, 2026

Design and Development of Aptamer–Gold Nanoparticle Based Colorimetric Assays for In-the-field Applications
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Dynamic Spirals of Nanoparticles in Light-Responsive Polygonal Fields.

Tetiana Orlova1, Rémi Plamont1, Alexis Depauw1

  • 1Bio-inspired and Smart Materials, MESA+ Institute for Nanotechnology, University of Twente, 7500 AE, Enschede, The Netherlands.

Small (Weinheim an Der Bergstrasse, Germany)
|August 8, 2019
PubMed
Summary

Researchers demonstrated gold nanoparticles forming dynamic spiral patterns within chiral liquid crystals. These light-responsive chiral templates offer new pathways for creating advanced soft photonic nanomaterials.

Keywords:
chiralitymolecular switchesnanoparticlesself-assemblysmart materials

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Soft Matter Physics

Background:

  • Nanoparticle aggregation in soft matter hinders the creation of ordered superstructures.
  • Existing nanoparticle assemblies in liquid crystals are static and lack responsiveness.

Purpose of the Study:

  • To investigate the self-assembly of gold nanoparticles into dynamic chiral patterns in liquid crystals.
  • To explore the use of light-responsive liquid crystals as templates for nanoparticle organization.

Main Methods:

  • Formation of spiral superstructures of gold nanoparticles in polygonal cholesteric liquid crystal fields.
  • Incorporation of molecular photoswitches into cholesteric liquid crystals to induce light-responsive behavior.

Main Results:

  • Gold nanoparticles self-assembled into spiral superstructures within cholesteric liquid crystals.
  • The pitch of nanoparticle spirals dynamically adjusted in response to light-induced changes in the liquid crystal structure.

Conclusions:

  • Chiral liquid crystals serve as effective dynamic templates for creating organized nanoparticle superstructures.
  • This approach enables the development of responsive soft photonic nanomaterials with tunable plasmonic properties.