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

Journal: Small (Weinheim an der Bergstrasse, Germany)
Published Date: May 8, 2025

Abstract

In the field of human-computer interaction (HCI), gel-based ionic tattoos have emerged as a notable innovation owing to their human-like softness and elasticity. These ionic tattoos are highly valued for their biocompatibility, stability, and user-experience comfortability. This research has focused on combining the environmentally stable and biocompatible green solvent with dynamically degradable and reusable polymer networks to develop a propylene glycol-based supramolecular organogel (PGOG). It demonstrates an impressive elongation of 10 400% at break. The photocured PGOG can be recycled on-demand in water and formulated into a portable spray solution, which can be sprayed on the back of the hand just like a sunscreen spray, providing a seamless and comfortable fit that closely matches the skin's contours. Additionally, an integrated ionic circuit is designed with the capability of sensing temperature, humidity, and strain signals with the assistance of AI, demonstrating its potential application in intelligent artificial skin.

Authors

  • Jinghao Zhu
    Key Laboratory of Advanced Light Conversion Materials and Biophotonics, School of Chemistry and Life Resources, Renmin University of China, Beijing, 100872, P. R. China.
  • Yao An
    Key Laboratory of Advanced Light Conversion Materials and Biophotonics, School of Chemistry and Life Resources, Renmin University of China, Beijing, 100872, P. R. China.
  • Beihang Xu
    Key Laboratory of Advanced Light Conversion Materials and Biophotonics, School of Chemistry and Life Resources, Renmin University of China, Beijing, 100872, P. R. China.
  • Siyi Mo
    Department of Prosthodontics, Center for Oral and Jaw Functional Diagnosis, Treatment and Research, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, 100081, P. R. China.
  • Xiaojun Zhou
    Key Laboratory of Advanced Light Conversion Materials and Biophotonics, School of Chemistry and Life Resources, Renmin University of China, Beijing, 100872, P. R. China.
  • Qing Zhang
    Department of Respiratory Medicine, Affiliated Zhongshan Hospital of Dalian University, Dalian, China.
  • Yapei Wang
    Key Laboratory of Advanced Light Conversion Materials and Biophotonics, School of Chemistry and Life Resources, Renmin University of China, Beijing, 100872, P. R. China.
  • Yonglin He
    Key Laboratory of Advanced Light Conversion Materials and Biophotonics, School of Chemistry and Life Resources, Renmin University of China, Beijing, 100872, P. R. China.

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