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An Additive Manufacturing Technique for the Facile and Rapid Fabrication of Hydrogel-based Micromachines with Magnetically Responsive Components
Published on: July 18, 2018
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Healable, Recyclable, and Multifunctional Soft Electronics Based on Biopolymer Hydrogel and Patterned Liquid Metal
Xing Peng Hao1, Chuan Wei Zhang1, Xin Ning Zhang1
1Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
Small (Weinheim an Der Bergstrasse, Germany)
|May 9, 2022
Summary
Researchers developed sustainable hydrogel-based soft electronics (HSE) integrating liquid metal circuits. These biodegradable and recyclable devices offer multifunctional sensing and drug delivery capabilities for advanced applications.
Area of Science:
- Materials Science
- Biomedical Engineering
- Soft Robotics
Background:
- Developing sustainable soft electronics is crucial for applications in wearables, biomedical devices, and soft robots.
- Existing degradable hydrogels often lack integrated conducting circuits, limiting their sensing performance.
- There is a need for advanced soft electronic materials that are both functional and environmentally friendly.
Purpose of the Study:
- To create novel, sustainable hydrogel-based soft electronics (HSE) with integrated sensing and conducting capabilities.
- To investigate the multifunctional sensing and application potential of these HSE devices.
- To demonstrate the recyclability and degradability of the developed soft electronics.
Main Methods:
- Fabrication of gelatin-alginate hybrid hydrogels incorporating patterned liquid metal (LM).
- Integration of sensing elements within the hydrogel matrix for multimodal detection.
- Characterization of HSE properties including transparency, robustness, resilience, and recyclability.
- Testing of HSE for strain, temperature, electrocardiogram (ECG), and pH sensing.
- Evaluation of HSE for iontophoretic drug delivery and noncontact object detection.
Main Results:
- The developed HSE exhibits transparency, robustness, resilience, and recyclability.
- The HSE successfully performs multifunctional sensing, including sensitive strain detection for pulse monitoring, temperature, ECG, and pH.
- The device demonstrates potential as a model system for iontophoretic drug delivery.
- Noncontact object detection is achieved via electrostatic-field-induced voltage.
- Both the LM and biopolymer hydrogel components are healable, recyclable, and degradable.
Conclusions:
- Sustainable hydrogel-based soft electronics (HSE) integrating patterned liquid metal offer a promising platform for next-generation applications.
- The multifunctional capabilities, including advanced sensing and drug delivery, highlight the versatility of these HSE.
- The healable, recyclable, and degradable nature of the materials supports sustainable electronic device development and reconstruction.
