Fig. 3: Gyrification of Au-PDMS reticular nanophase. | Nature Communications

Fig. 3: Gyrification of Au-PDMS reticular nanophase.

From: Kinetically controlled metal-elastomer nanophases for environmentally resilient stretchable electronics

Fig. 3

a Optical microscopy images showing the spontaneous gyrification of the Au-PDMS reticular nanophase after Au deposition over a period of 6 h. Scale bars in the photographs denote 15 μm. b Raman mapping image of plain PDMS. c Raman mapping image of as-Au–deposited substrate showing residual stress formed during the reticular growth of Au nanostructures inside the vacuum chamber. d Finite element method (FEM) simulation of morphology features under different mechanical parameters and Au deposition thicknesses. Scale bar denotes 10 μm. e Optical microscope images of a gyrified nanophase sample before and after dissolving Au in aqua regia. Scale bars denote 15 μm. Inset photo images represent apparent color change according to dissolving Au. Scale bars of the insets denote 1 cm.

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