Engineering Graphene Mechanical Systems
We report a method to introduce direct bonding between graphene platelets that enables the transformation of a multilayer chemically modified graphene (CMG) film from a “paper mache-like” structure into a stiff, high strength material. On the basis of chemical/defect manipulation and recrystallizati...
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Published in | Nano letters Vol. 12; no. 8; pp. 4212 - 4218 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Washington, DC
American Chemical Society
08.08.2012
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Subjects | |
Online Access | Get full text |
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Summary: | We report a method to introduce direct bonding between graphene platelets that enables the transformation of a multilayer chemically modified graphene (CMG) film from a “paper mache-like” structure into a stiff, high strength material. On the basis of chemical/defect manipulation and recrystallization, this technique allows wide-range engineering of mechanical properties (stiffness, strength, density, and built-in stress) in ultrathin CMG films. A dramatic increase in the Young’s modulus (up to 800 GPa) and enhanced strength (sustainable stress ≥1 GPa) due to cross-linking, in combination with high tensile stress, produced high-performance (quality factor of 31 000 at room temperature) radio frequency nanomechanical resonators. The ability to fine-tune intraplatelet mechanical properties through chemical modification and to locally activate direct carbon–carbon bonding within carbon-based nanomaterials will transform these systems into true “materials-by-design” for nanomechanics. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1530-6984 1530-6992 |
DOI: | 10.1021/nl3018059 |