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Programmed planar-to-helical shape transformations of composite hydrogels with bioinspired layered fibrous structures
Zhi Jian Wang1, Chao Nan Zhu, Wei Hong
1MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China. wuziliang@zju.edu.cn.
Journal of Materials Chemistry. B
|April 9, 2020
Summary
Researchers developed self-shaping composite hydrogels with tunable 3D deformations using multi-step photolithography. This method allows for complex structures and programmed shape transformations, advancing soft robotics and flexible electronics.
Area of Science:
- Materials Science
- Polymer Science
- Soft Robotics
Background:
- Self-shaping materials are crucial for soft robotics and flexible electronics.
- A key challenge is creating complex structures within these active materials.
Purpose of the Study:
- To fabricate composite hydrogels with controllable in-plane and out-of-plane structural gradients.
- To achieve programmed, tunable shape transformations in response to stimuli.
Main Methods:
- Utilized multi-step photolithography to create patterned composite hydrogels.
- Engineered layered fibrous structures, mimicking natural forms like bean pods.
- Demonstrated controlled fabrication of gels with varying responsive polymer regions.
Main Results:
- Developed a bean pod-like patterned gel exhibiting programmed deformation into a twisted helix.
- Showcased the ability to precisely tune helical parameters.
- Achieved multiple shape transformations by patterning different responsive polymers.
Conclusions:
- This approach offers precise control over intricate hydrogel structures and localized responses.
- Facilitates the generation of complex internal stresses and 3D deformations for advanced applications.
- Enables the design of sophisticated self-shaping materials for soft robotics and flexible electronics.
