Ultra‐Sensitive, Deformable, and Transparent Triboelectric Tactile Sensor Based on Micro‐Pyramid Patterned Ionic Hydrogel for Interactive Human–Machine Interfaces

Abstract Rapid advances in wearable electronics and mechno‐sensational human–machine interfaces impose great challenges in developing flexible and deformable tactile sensors with high efficiency, ultra‐sensitivity, environment‐tolerance, and self‐sustainability. Herein, a tactile hydrogel sensor (THS) based on micro‐pyramid‐patterned double‐network (DN) ionic organohydrogels to detect subtle pressure changes by measuring the variations of triboelectric output signal without an external power supply is reported. By the first time of pyramidal‐patterned hydrogel fabrication method and laminated polydimethylsiloxane (PDMS) encapsulation process, the self‐powered THS shows the advantages of remarkable flexibility,…

• NN
  National Natural Science Foundation of China

  Awards: 51705429, B13044, 61801525, 201078, IEC/NSFC/201078
• HE
  Higher Education Discipline Innovation Project

  Award: B13044
• EA
  Engineering and Physical Sciences Research Council

  Awards: EP/P018998/1, IEC/NSFC/201078, EP/P018998, 201078, EP/P018998/1
• FR
  Fundamental Research Funds for the Central Universities

  Awards: 2018A030313400, B13044, IEC/NSFC/201078