LM-Gel Plasticine Based on Binary Cooperative with Kneadable Shaping and Conductivity

Area of Science:

• Materials Science
• Polymer Chemistry
• Soft Robotics
• Wearable Electronics

Background:

• Liquid metal (LM)-based polymers are gaining traction for advanced applications like wearable health monitoring, electronic skins, and soft robotics.
• A key challenge lies in creating multifunctional LM-polymers that are easily shapeable, highly deformable, and electrically conductive.

Purpose of the Study:

• To develop a novel liquid metal-gel plasticine (LGP) with enhanced deformability and convenient shaping capabilities.
• To explore the potential of LGP in diverse applications including 3D circuitry, circuit repair, and switch fabrication.
• To investigate the electrical conductivity and electric heating performance of the developed LGP material.

Main Methods:

• A strategy was devised to prepare LGP by combining a poly(vinyl alcohol) (PVA) soft network with a liquid metal (LM) conductive phase.
• The LGP material was characterized for its shaping ability, deformability, and electrical conductivity.
• Surface annealing was employed to enhance the conductivity of the LGP.

Main Results:

• The developed LGP exhibits excellent deformability and can be easily molded into various shapes, akin to plasticine.
• The material demonstrates significant electrical conductivity (2.3 × 10^4 S/m) after surface annealing.
• LGP shows promising electric heating performance, indicating potential for wearable heating devices.

Conclusions:

• This study presents a novel method for creating LM-polymer plasticine with superior properties.
• The developed LGP material offers a versatile platform for applications requiring shape-memory, conductivity, and flexibility.
• The findings open new avenues for extending the use of LM-polymer composites in emerging technological fields.