Stretchable conductive networks of carbon nanotubes using plasticized colloidal templates

Worajittiphon, Patnarin, Large, Matthew, King, Alice, Jurewicz, Izabela and Dalton, Alan (2015) Stretchable conductive networks of carbon nanotubes using plasticized colloidal templates. Frontiers in Materials, 2 (15). ISSN 2296-858X

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We present a study of the behavior of highly ordered, segregated single-wall carbon nanotube (CNT) networks under applied strain. Polymer latex templates induce self-assembly of CNTs into hexagonal (2D) and honeycomb (3D) networks within the matrix. Using mechanical and spectroscopic analysis, we have studied the strain transfer mechanisms between the CNT network and the polymer matrix. Axial deformation of the nanotube network under applied strain is indicated by downshifts in the 2D mode in the Raman spectra, as well as variation in the radial breathing modes.The slippage within nanotube bundles at high strain is indicated by a reduction in the 2D mode rate of change. The fractional resistance change of the composites with strain obeys power law dependence. We present a model for the behavior of CNT bundles under strain informed by these measurements, and potential applications for such composite materials in elastic electronic devices that can tolerate high strain.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Materials Physics Group
Subjects: Q Science
Depositing User: Alan Dalton
Date Deposited: 19 Jan 2018 11:43
Last Modified: 19 Jan 2018 11:43

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