A Durable Metalgel Maintaining 3×10⁶ S∙M^‒1 Conductivity under 1 000 000 Stretching Cycles.

Area of Science:

• Materials Science
• Polymer Science
• Nanotechnology

Background:

• Conductive elastomers are crucial for wearable electronics and soft robotics.
• Existing materials lack stable conductivity under repeated stretching.
• A need exists for durable, highly conductive materials for flexible applications.

Purpose of the Study:

• To develop a novel conductive elastomer with enhanced durability and metal-level conductivity.
• To overcome the limitations of current materials in maintaining conductivity during mechanical deformation.
• To enable new possibilities in advanced applications like wearable technology.

Main Methods:

• Fabrication of a waterborne polyurethane network with electrostatic interactions.
• Immobilization of a liquid metal continuum within the polymer network.
• Testing of conductivity and durability under extensive stretching cycles.

Main Results:

• Achieved a conductivity of 3 × 10^6 S∙m^-1.
• Demonstrated stable conductivity after 1,000,000 stretching cycles.
• The liquid metal continuum deformed synchronously and reversibly with the polymer network.

Conclusions:

• The new metalgel design overcomes performance limitations of current conductive elastomers.
• The material offers unprecedented durability and stable conductivity for flexible electronics.
• This advancement unlocks new opportunities for cutting-edge applications in wearable technology and robotics.