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@article{Akono2011ScratchingAA,
  title={Scratching as a fracture process: from butter to steel.},
  author={Ange- Therese Akono and Pedro M. Reis and Franz-Josef Ulm},
  journal={Physical review letters},
  year={2011},
  volume={106 20},
  pages={
          204302
        },
  url={https://api.semanticscholar.org/CorpusID:1176619}
}

A model is derived that provides a quantitative means to relate quantities measured in scratch tests to fracture properties of materials at multiple scales and opens new venues towards miniaturization of the technique.