Flexible Multifunctionalized Carbon Nanotubes-Based Hybrid Nanowires
Journal article, 2015

In this work, flexible multifunctionalized carbon nanotube (CNT)-based hybrid nanowires are synthesized through surface modification processes. The good dispersability of the hybrid nanowire in polar solvents facilitates directly making fine patterns with a minimum width of 40 μm for applications of flexible and stretchable circuits (FSCs). The hybrid nanowire possesses a flexible and highly conductive structure which demonstrates stable electro-mechanical properties on polydimethylsiloxane (PDMS) substrates under large structural deformation. FSCs fabricated from the hybrid nanowires show a constant resistance of 0.096 Ω □-1 (equivalent of a resistivity 0.96 Ω μm) under repeated bending cycles. The FSCs also have a low and stable sheet resistance of 0.4 Ω □-1 for strains up to 30%, which is almost four orders of magnitude lower than that of pure CNT samples (1316 Ω □-1). Further improved stretchability and electro-mechanical properties (0.1 Ω □-1, at the strain of 100%) are achieved with a prestrain PDMS substrate. Repeated deformation tests demonstrate the high reliability of FSCs. The observed stable and reliable electro-mechanical performance of FSCs suggests the potential use of the material in wearable and portable electronics. Multifunctionalized hybrid nanowires based on carbon nanotubes are prepared through different surface modification processes. These hybrid nanowires exhibit both the high electrical conductivity of metal and excellent mechanical properties of carbon nanotubes together with good dispersability. Flexible and stretchable electrodes based on the hybrid nanowires demonstrate stable electro-mechanical properties under large structural deformations.

functionalization

carbon nanotubes

flexible electronics

hybrid nanowires

Author

Nan Wang

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

Di Jiang

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

L. Ye

SHT Smart High-Tech

Murali Murugesan

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

Michael Edwards

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

Yifeng Fu

SHT Smart High-Tech

Johan Liu

Shanghai University

Advanced Functional Materials

1616-301X (ISSN)

Vol. 25 26 4135-4143

Subject Categories

Nano Technology

DOI

10.1002/adfm.201501017

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3/7/2018 7