We present an approach that allows for the preparation of well-defined large arrays of graphene wrinkles with predictable geometry. Chemical vapor deposition grown graphene transferred onto hexagonal pillar arrays of SiO2 with sufficiently small interpillar distance forms a complex network of two main types of wrinkle arrangements. The first type is composed of arrays of aligned equidistantly separated parallel wrinkles propagating over large distances, and originates from line interfaces in the graphene, such as thin, long wrinkles and graphene grain boundaries. The second type of wrinkle arrangement is composed of non-aligned short wrinkles, formed in areas without line interfaces. Besides the presented hybrid graphene topography with distinct wrinkle geometries induced by the pre-patterned substrate, the graphene layers are suspended and self-supporting, exhibiting large surface area and negligible doping effects from the substrate. All these properties make this wrinkled graphene a promising candidate for a material with enhanced chemical reactivity useful in nanoelectronic applications.

Department of Condensed Matter Physics Faculty of Mathematics and Physics Charles University 5 Holesovickach 2 CZ 180 00 Prague 8 Czech Republic

Department of Inorganic Chemistry Faculty of Science Charles University Albertov 6 CZ 128 43 Prague 2 Czech Republic

Institute of Physics of the CAS v v i Na Slovance 2 CZ 182 21 Prague 8 Czech Republic

J Heyrovsky Institute of Physical Chemistry of the CAS v v i Dolejskova 3 CZ 182 23 Prague 8 Czech Republic

Leibniz Institute of Photonic Technology PO Box 100239 D 07702 Jena Germany

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