A mechanically driven form of Kirigami as a route to 3D mesostructures in micro/nanomembranes
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Open Access
- 8 September 2015
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences of the United States of America
- Vol. 112 (38), 11757-11764
- https://doi.org/10.1073/pnas.1515602112
Abstract
Assembly of 3D micro/nanostructures in advanced functional materials has important implications across broad areas of technology. Existing approaches are compatible, however, only with narrow classes of materials and/or 3D geometries. This paper introduces ideas for a form of Kirigami that allows precise, mechanically driven assembly of 3D mesostructures of diverse materials from 2D micro/nanomembranes with strategically designed geometries and patterns of cuts. Theoretical and experimental studies demonstrate applicability of the methods across length scales from macro to nano, in materials ranging from monocrystalline silicon to plastic, with levels of topographical complexity that significantly exceed those that can be achieved using other approaches. A broad set of examples includes 3D silicon mesostructures and hybrid nanomembrane–nanoribbon systems, including heterogeneous combinations with polymers and metals, with critical dimensions that range from 100 nm to 30 mm. A 3D mechanically tunable optical transmission window provides an application example of this Kirigami process, enabled by theoretically guided design. Significance Existing options in three-dimensional (3D) assembly of micro/nanomaterials are constrained by a narrow accessible range of materials and/or 3D geometries. Here we introduce concepts for a form of Kirigami for the precise, mechanically driven assembly of 3D mesostructures from 2D micro/nanomembranes with strategically designed geometries and patterns of cuts. Theoretical and experimental studies in a broad set of examples demonstrate the applicability across length scales from macro to micro and nano, in materials ranging from monocrystalline silicon to metal and plastic, with levels of topographical complexity that significantly exceed those possible with other schemes. The resulting engineering options in functional 3D mesostructures have important implications for construction of advanced micro/nanosystems technologies.Keywords
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