Sprayable Ionic Tattoo Exploiting Biocompatible and Recyclable Organogel for AI-Assisted Multisignal Sensing

Area of Science:

• Materials Science
• Human-Computer Interaction (HCI)
• Biotechnology

Background:

• Ionic tattoos offer unique softness and elasticity for human-computer interaction (HCI).
• Existing materials often lack biocompatibility, stability, or user comfort.
• Need for advanced materials in wearable electronics and artificial skin applications.

Purpose of the Study:

• To develop a novel, environmentally stable, and biocompatible supramolecular organogel.
• To create a highly elastic and reusable material for advanced HCI applications.
• To integrate sensing capabilities for intelligent artificial skin.

Main Methods:

• Synthesized a propylene glycol-based supramolecular organogel (PGOG) using a green solvent and dynamically degradable polymer networks.
• Evaluated the material's mechanical properties, including elongation at break.
• Developed a sprayable formulation and integrated an ionic circuit for signal sensing.

Main Results:

• Achieved an impressive elongation at break of 10,400%.
• Demonstrated on-demand recyclability in water after photocuring.
• Successfully integrated a circuit capable of sensing temperature, humidity, and strain signals with AI assistance.

Conclusions:

• The developed PGOG is a highly elastic, biocompatible, and reusable material suitable for advanced HCI.
• The sprayable formulation offers a seamless and comfortable user experience.
• The integrated sensing capabilities highlight potential for intelligent artificial skin and wearable electronics.