title: Quasi In Situ Polymerization To Fabricate Copper Nanowire-Based Stretchable Conductor and Its Applications.
abstract: Stretchable electronics have progressed greatly and have found their way into various applications, thus resulting in a growing demand for high-quality stretchable conductors. Poly(dimethylsiloxane) (PDMS) is the mostly frequently exploited elastomeric substrate for the construction of a stretchable and conductive platform because of its valuable features, such as superb stretch ability, high transparency, and reliable biocompatibility. However, the weak adhesion between the PDMS substrate and the conductive components has always been an intractable issue which undermines the good and stable performance of the resultant devices. We proposed a quasi in situ polymerization method to effectively build a tight and stable attachment between copper nanowire (Cu NW) and the PDMS substrate. The Cu NWs/PDMS conductors show excellent conductivity and antioxidation stability (R/R0 < 1.4 for 50 days in air), enhanced interface adhesion, and stretch ability (80% strain, R/R0 ∼ 5), without any complicated preconfiguration of the PDMS substrates. For application demonstration, the Cu NWs/PDMS conductor was deployed as the stretchable electric wiring to illuminate a light-emitting diode. Furthermore, a stretchable capacitive strain sensor was fabricated using the Cu NWs/PDMS as electrodes. The sensor possessed a gauge factor of 0.82 and the minimum detection limit of 1% strain.
authors.affiliation: The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, University of Chinese Academy of Sciences , 1295 Dingxi Road, Shanghai 200050, P.R. China.
authors.forename: Tao
authors.initials: T
authors.lastname: Wang
authors.affiliation: The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, University of Chinese Academy of Sciences , 1295 Dingxi Road, Shanghai 200050, P.R. China.
authors.forename: Ranran
authors.initials: R
authors.lastname: Wang
authors.affiliation: The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, University of Chinese Academy of Sciences , 1295 Dingxi Road, Shanghai 200050, P.R. China.
authors.forename: Yin
authors.initials: Y
authors.lastname: Cheng
authors.affiliation: The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, University of Chinese Academy of Sciences , 1295 Dingxi Road, Shanghai 200050, P.R. China.
authors.forename: Jing
authors.initials: J
authors.lastname: Sun
keywords: PDMS; copper nanowires; quasi in situ polymerization; strain sensor; stretchable electrode