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Intrinsically Stretchable and Self‐Healing Electroconductive Composites Based on Supramolecular Organic Polymer Embedded with Copper Microparticles
Author(s) -
Yeasmin Rubaya,
Duy Le Thai,
Han Seungik,
Seo Hyungtak
Publication year - 2020
Publication title -
advanced electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.25
H-Index - 56
ISSN - 2199-160X
DOI - 10.1002/aelm.202000527
Subject(s) - materials science , composite number , electronics , copper , composite material , nanotechnology , flexible electronics , electronic skin , electrical resistivity and conductivity , self healing , polymer , electrical engineering , metallurgy , medicine , alternative medicine , pathology , engineering
Abstract Integration of electrical conductivity, stretchability, and self‐healing properties of electronic material is a promising way to meet the criteria for developing next‐generation technologies ranging from ordinary sustainable electronics to high‐tech human–machine interfaces. To this particular purpose, a cost‐effective composite material having simultaneous functionalities of electrical conductivity, stretchability, and self‐healability based on supramolecular organic polymer and copper microparticles is presented. The composite can be mass‐produced via the sol–gel method and is tunable by adjusting the copper loading. Electrical and mechanical characterizations show that the composite material owns not only a high stretchability (≥120%) but also an excellent self‐healability at ambient conditions within 5 min. The healing efficiency is about 90% for its mechanical property and almost 100% for its electrical properties. Besides, the electrical properties are found in the range of semiconductors that can be restored upon five cutting–healing cycles. One‐step further, the developed material is utilized to fabricate a wearable strain sensor. Also, real‐time human motion detection is demonstrated using the fabricated sensor. These results exhibit the potential of the material for developing self‐healing electronic devices and show promising directions in the field of wearable and sustainable electronics, human–machine interfaces.