The use of capacitively coupled contactless conductivity detection (C⁴D) for the characterisation of thin conductive graphene fibres, graphene composite fibres, and graphene coated fibrous materials is demonstrated for the first time. Within a few seconds, the non-destructive C⁴D detector provides a profile of the longetudinal physical homogeneity of the fibre, as well as extra information regarding fibre mophology and composition. In addition to the theoretical considerations related to the factors affect the output signal, this work evaluates the properties of graphene fibres using scanning C⁴D following the manufacturing process of wet-spinning. Furthermore, conductive graphene-coated fibrous materials and the effectiveness of the coating and reduction procedures applied could be investigated. Apart from the application of C⁴D in the monitoring of such processes, the feasibility of this small, highly sensitive and rapidly-responsive detector to monitor strain and elasticity responses of conductive and elastomeric composite fibres for applications in motion sensing, biomedical monitoring, and stretchable electronics was also demonstrated.

Item Type:	Refereed Article
Keywords:	Contactless detection, sensors, material science, C4D, Graphene, Liquid crystal graphene oxide, graphene coation
Research Division:	Chemical Sciences
Research Group:	Analytical chemistry
Research Field:	Sensor technology (incl. chemical aspects)
Objective Division:	Expanding Knowledge
Objective Group:	Expanding knowledge
Objective Field:	Expanding knowledge in the chemical sciences
UTAS Author:	Cabot, JM (Dr Joan Cabot Canyelles)
UTAS Author:	Duffy, E (Miss Emer Duffy)
UTAS Author:	Currivan, S (Dr Sinead Currivan)
UTAS Author:	Breadmore, M (Professor Michael Breadmore)
UTAS Author:	Paull, B (Professor Brett Paull)
ID Code:	112410
Year Published:	2016
Web of Science® Times Cited:	11
Deposited By:	Chemistry
Deposited On:	2016-11-09
Last Modified:	2017-10-30
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