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Updated: Sep 13, 2025

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Visible Light-Driven Soft Actuator Exhibiting Multistage Shape Morphing.

Xinyu Chen1, Zhaozhong Li2, Xinrui Deng1

  • 1College of Chemistry and Engineering, Jiangxi Normal University, Nanchang, 330022, P. R. China.

Small (Weinheim an Der Bergstrasse, Germany)
|August 1, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed a new light-driven liquid crystalline network (LCN) film using donor-acceptor stenhouse adducts (DASAs). This material enables multistage color changes and shape morphing for adaptive soft robots without complex synthesis.

Keywords:
donor‐acceptor stenhouse adductsliquid crystalline networkmultistage shapeself‐feedback photoactuationsoft actuator

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Robotics

Background:

  • Traditional soft robots exhibit limitations in complex motion and adaptability despite their flexibility.
  • Developing advanced materials is crucial for enhancing soft robot capabilities.

Purpose of the Study:

  • To design and prepare a visible light-driven liquid crystalline network (LCN) film with multistage photo-responsive behavior.
  • To enable the fabrication of complex, self-adaptive light-driven soft actuators and devices.

Main Methods:

  • Integration of donor-acceptor stenhouse adducts (DASAs) into an LCN matrix.
  • Controlled polymerization temperature to influence DASA isomerization and photothermal effects.
  • Fabrication of DASA-LCN films with spatially precise photo-induced color changes and shape morphing.

Main Results:

  • DASA exhibited polymerization temperature-dependent isomerization.
  • The DASA-LCN film demonstrated multistage color changes and shape morphing under visible light.
  • A soft actuator with time-resolved light-responsive deformations was successfully achieved.

Conclusions:

  • A straightforward method for preparing self-adaptive light-driven LCN devices was demonstrated.
  • This advancement paves the way for reconfigurable and inherently adaptive soft robots.
  • The developed material offers precise control over photo-induced deformations without complex synthesis.