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Pop-Up Conducting Large-Area Biographene Kirigami

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posted on 2018-08-28, 00:00 authored by Ruilong Ma, Changsheng Wu, Zhong Lin Wang, Vladimir V. Tsukruk
We demonstrate the rapid, large-area transformation of bioenabled graphene laminates into multidimensional geometries for pop-up and stretchable applications. Water-vapor annealing facilitates the controlled plasticization of the multilayered silk–graphene morphologies, allowing highly localized kirigami cuts by programmable drag knife with diverse type and depth of cuts. By adjusting drag-knife depth, we can generate a microscale array of full and partial cuts, enabling a purely topological approach toward the control of metastable fold–unfold states and crack fracture paths in kirigami structures. Through orthogonal control over the graphene–silk compositeʼs nanoscale morphology, cut pattern, and semimetal-like conductivity, we showcase bioenabled laminates as a platform for prospective soft and shape-transforming electronics as flexible interconnects and stretchable energy harvesters.