Hiltunen, V.-M., Koskinen, P., Mentel, K. K., Manninen, J., Myllyperkiö, P., Pettersson, M., & Johansson, A. (2021). Ultrastiff graphene. npj 2D Materials and Applications, 5, Article 49. https://doi.org/10.1038/s41699-021-00232-1
Published innpj 2D Materials and Applications
© The Author(s) 2021
Graphene has exceptionally high in-plane strength, which makes it ideal for various nanomechanical applications. At the same time, its exceptionally low out-of-plane stiffness makes it also flimsy and hard to handle, rendering out-of-plane structures unstable and difficult to fabricate. Therefore, from an application point of view, a method to stiffen graphene would be highly beneficial. Here we demonstrate that graphene can be significantly stiffened by using a laser writing technique called optical forging. We fabricate suspended graphene membranes and use optical forging to create stable corrugations. Nanoindentation experiments show that the corrugations increase graphene bending stiffness up to 0.8 MeV, five orders of magnitude larger than pristine graphene and corresponding to some 35 layers of bulk graphite. Simulations demonstrate that, in addition to stiffening by micron-scale corrugations, optical forging stiffens graphene also at the nanoscale. This magnitude of stiffening of an atomically thin membrane will open avenues for a plethora of new applications, such as GHz resonators and 3D scaffolds. ...
PublisherNature Publishing Group
Publication in research information system
MetadataShow full item record
Related funder(s)Academy of Finland
Funding program(s)Academy Project, AoF
Additional information about fundingV.-M.H. acknowledges funding from the Finnish Cultural Foundation. P.K. and M.P. acknowledge funding from the Academy of Finland (grants 297115 and 311330).
Showing items with similar title or keywords.
The role of oxidation treatments before and after CVD synthesis of graphene on copper catalytic surface Neuvonen, Santeri (2021)Graphene is a sheet of honeycomb bonded carbon, that is only one atom thick. Aside from its remarkable strength, graphene has great conducting and photochemical prop erties. Due to its unique properties, it can be used ...
Experimental studies on carbon nanotubes and graphene functionalized via physical adsorption with cellulose and avidin Shao, Dongkai (University of Jyväskylä, 2018)In this Thesis I have experimentally studied structural, electronic, and optical properties of hybrids of nanocarbon materials, carbon nanotubes (CNT) and graphene, and certain biomacromolecules. The latter are especially ...
Preparation of graphene nanocomposites from aqueous silver nitrate using graphene oxide’s peroxidase-like and carbocatalytic properties Garg, Kunal; Papponen, Petri; Johansson, Andreas; Puttaraksa, Nitipon; Gilbert, Leona (Nature Publishing Group, 2020)The present study evaluates the role of graphene oxide’s (GO’s) peroxidase-like and inherent/carbocatalytic properties in oxidising silver nitrate (AgNO3) to create graphene nanocomposites with silver nanoparticles (GO/Ag ...
Hiltunen, Vesa-Matti (2016)Tämän pro gradu -tutkielman aiheena oli tutkia itsekantavien grafeeninäytteiden valmistusta. Grafeeni syntetisoitiin kaasufaasikasvatuksella ilmakehän paineessa kupariohutkalvoille. Kupariohutkalvot valmistattiin käyttämällä ...
Plyushch, Alexander (2020)The work, presented in this thesis, focuses on studying graphene as a signal enhancing material for spectroscopic applications. Among many outstanding characteristics of graphene, it also exhibits attractive plasmonic ...