Highly Stretchable and Biocompatible Liquid Metal-Elastomer Conductors for Self-Healing Electronics

Area of Science:

• Materials Science
• Nanotechnology
• Polymer Science

Background:

• Highly stretchable and conductive materials are essential for flexible electronics.
• Challenges exist in large-scale, cost-effective production and connecting soft to rigid components.

Purpose of the Study:

• To develop a novel, scalable, and cost-effective conductive nanocomposite for flexible devices.
• To create a material that is highly stretchable, conductive, and biocompatible.
• To engineer an efficient connector for soft and rigid electronic components.

Main Methods:

• Synthesized a nanocomposite by mixing 11-mercaptoundecanoic acid (MUA) modified liquid metal (LM) nanoparticles with polystyrene-block-polybutadiene-block-polystyrene (SBS).
• Utilized a straightforward physical production process for large-scale manufacturing.
• Modified the composite with resin to enhance adhesion and conductivity.

Main Results:

• Achieved a highly stretchable (800% elongation) and conductive (12,000 S cm⁻¹) nanocomposite.
• Demonstrated biocompatibility for both in vivo and in vitro applications.
• Successfully used the modified composite as an adhesive and conductive connector between soft and rigid components.

Conclusions:

• The MUA-modified LM-SBS nanocomposite offers a promising solution for flexible electronics.
• The material's scalability, cost-effectiveness, and performance address key fabrication challenges.
• This conductive nanocomposite enables stable and efficient integration of diverse electronic components.