CUED Publications database

Development of a universal stress sensor for graphene and carbon fibres

Frank, O and Tsoukleri, G and Riaz, I and Papagelis, K and Parthenios, J and Ferrari, AC and Geim, AK and Novoselov, KS and Galiotis, C (2011) Development of a universal stress sensor for graphene and carbon fibres. Nature Communications, 2.

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Carbon fibres are a significant volume fraction of modern structural airframes. Embedded into polymer matrices, they provide significant strength and stiffness gains by unit weight compared with competing structural materials. Here we use the Raman G peak to assess the response of carbon fibres to the application of strain, with reference to the response of graphene itself. Our data highlight the predominance of the in-plane graphene properties in all graphitic structures examined. A universal master plot relating the G peak strain sensitivity to tensile modulus of all types of carbon fibres, as well as graphene, is presented. We derive a universal value of - average - phonon shift rate with axial stress of around -5ω 0 -1 (cm -1 Mpa -1 ), where ω 0 is the G peak position at zero stress for both graphene and carbon fibre with annular morphology. The use of this for stress measurements in a variety of applications is discussed. © 2011 Macmillan Publishers Limited. All rights reserved.

Item Type: Article
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:17
Last Modified: 22 May 2018 08:01