Extended Data Fig. 1: Graphene-induced a variety of surface reconstruction on different Pt grain. | Nature Materials

Extended Data Fig. 1: Graphene-induced a variety of surface reconstruction on different Pt grain.

From: Conversion of chirality to twisting via sequential one-dimensional and two-dimensional growth of graphene spirals

Extended Data Fig. 1

(a) In situ ESEM images recorded the folded-over graphene wrinkle on Pt polycrystal surface at 1400 °C, 25 Pa. (b) Zoom-out SEM image showing wide-angle view of Pt substrate. (c–e) AFM images recorded from the same Pt grains imaged in (a). The graphene covered surfaces are characterized by graphene-induced Pt step bunching and surface reconstructions. (f) Global SEM image showing the overview morphology of Pt substrate. (g) Schematic of typical EBSD data collection showing the orientation of the crystal reference frame, from rolling (RD), transverse (TD) and normal (ND) orthogonal directions. The EBSD map recorded from a region in (f) is shown in (h) from ND, and in (i) from RD respectively. The different orientations of the cubic model represent the local orientation of Pt surface gains.

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