Ultra-Sensitive Bio-Polymer Iontronic Sensors for Object Recognition from Tactile Feedback
Advanced Materials Technologies, vol.8, no.16, 2023 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 8 Issue: 16
- Publication Date: 2023
- Doi Number: 10.1002/admt.202300322
- Journal Name: Advanced Materials Technologies
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Applied Science & Technology Source, Compendex, INSPEC
- Keywords: flexible electronics, human–machine interfaces, iontronic pressure sensors, machine learning, object sensing
- Middle East Technical University Affiliated: Yes
Abstract
Supramolecular polymer gels show promise for use in batteries, supercapacitors, and multifunctional sensors. However, their poor stiffness and ionic conductivity hinder their large-scale utilization. Herein, a cellulose-based supramolecular bio-polymer gel (SBPG) with high ionic conductivity and exceptional stiffness is reported. These properties are translated into proof-of-concept iontronic pressure sensors with an ultra-high sensitivity of 1 475 000 kPa−1. The technological potential is demonstrated via fabrication of a prototype smart glove using only eight pressure sensors based on this novel gel. Smart glove sensors with 90% classification accuracy for object recognition are demonstrated using a tactile feedback algorithm.