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Micro and Nano Systems Letters
Fig. 4 | Micro and Nano Systems Letters

Fig. 4

From: Wearable piezoresistive strain sensor based on graphene-coated three-dimensional micro-porous PDMS sponge

Fig. 4

Mechanical evaluation of the graphene-coated PDMS sponge. a Evaluation images when graphene-coated PDMS sponge is stretched from 0 to 60%. b The measured tensile stress–strain curves of bare and graphene-coated PDMS sponges. c The tensile stress–strain curves under different maximum strain range (from 10 to 50%). d The measured results of 1000 cycles on 20% strain

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