Wide‐Area Strain Sensors based upon Graphene‐Polymer Composite Coatings Probed by Raman Spectroscopy

By A. P. A. Raju, Amanda Lewis, B. Derby, R. Young, I. Kinloch, Recep Zan, K. Novoselov. 2014

141 citations recorded by the source corpus.

Functional graphene optical sensors are now viable due to the recent developments in hand‐held Raman spectroscopy and the chemical vapor deposition (CVD) of graphene films. Herein, the strain in graphene/poly (methyl methacrylate) sensor coatings is followed using Raman band shifts. The performance of an “ideal” mechanically‐exfoliated single crystal graphene flake is compared to a scalable CVD graphene film. The dry‐transferred mechanically exfoliated sample has no residual stresses, whereas the CVD sample is in compression following the solvent evaporation during its transfer. The behavior of the sensors under cyclic deformation shows an initial breakdown of the graphene‐polymer interface with the interface then stabilizing after several cycles. The Raman 2D band shift rates per unit strain of the exfoliated graphene are ≈35% higher than CVD graphene making the former more strain sensitive. However, for practical wide‐area applications, CVD graphene coatings are still viable candidates as a Raman system can be used to read the strain in any 5 μm diameter spot in the coating to an absolute accuracy of ≈0.01% strain and resolution of ≈27 microstrains (μs), which compares favorably to commercial photoelastic systems.

Subfields: Atomic and Molecular Physics, and Optics, Biomedical Engineering, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/c6924ae66322794fdef864354f6cdebb5bf99c39

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atomic and Molecular Physics, and Optics

1. R. Young
2. D. Papageorgiou
3. I. Kinloch

In Biomedical Engineering

1. D. Papageorgiou
2. I. Kinloch
3. R. Young

In Electrical and Electronic Engineering

1. D. Papageorgiou
2. R. Young
3. I. Kinloch

Citations in the corpus

• Mechanical properties of graphene and graphene-based nanocomposites (2017, methodology): “[10] followed the strain in the graphene/PMMA sensor coatings followed using Raman spectroscopy.”