Fig. 2: Graphene-based strain sensing unit fabricated by laser reduction. | npj Flexible Electronics

Fig. 2: Graphene-based strain sensing unit fabricated by laser reduction.

From: A smart ball sensor fabricated by laser kirigami of graphene for personalized long-term grip strength monitoring

Fig. 2: Graphene-based strain sensing unit fabricated by laser reduction.

a Mechanism of graphene-based piezoresistive strain sensing. b A cock pattern obtained from laser reduction on PI. c SEM cross-section and surface images of the graphene-based strain sensor. d I–V curves of the graphene-based strain sensor (20*5*0.075 mm) with different laser speeds. e Strain–stress curves. f Cyclic test of the strain-resistance curve (laser speed 1%, power 0.3%, PPI 400).

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