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Figure 4 | Nanoscale Research Letters

Figure 4

From: Microstructures and mechanical performance of polyelectrolyte/nanocrystalline TiO2 nanolayered composites

Figure 4

Load-indentation depth curve of the composite and SEM image of the indentation-induced microcrack. (a) Load-indentation depth curve of the (PE/TiO2)4 nanolayered composite measured by nanoindentation. (b) SEM image showing that indentation-induced microcrack advanced into the (PE/TiO2)4 nanolayer-coated region, by which fracture toughness of the nanocomposite can be obtained.

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