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Fast diffusion of water nanodroplets on graphene

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Bending Rules in Graphene Kirigami

The three-dimensional shapes of graphene sheets produced by nanoscale cut-and-join kirigami are studied by combining large-scale atomistic simulations with continuum elastic modeling. Lattice segments are selectively removed from a graphene sheet, and the ...

Amer Physical Soc2015

The electron spin lifetime in an assembly of chemically synthesized graphene sheets was found to be extremely sensitive to oxygen. Introducing small concentrations of physisorbed O-2 onto the graphene surface reduced the exceptionally long 140 ns electron ...

Wiley-V C H Verlag Gmbh2015

We introduce a new class of soft actuators based on the buckling of locally patterned elastic cylindrical shells that can be designed to reversibly achieve flexural or twisting motion. Depressurizing our samples allows for tunable and controllable motion. ...

Wiley-Blackwell2015

Micro-scale modeling of water diffusion in adhesive composite joints

Véronique Michaud, Luis Pablo Canal Casado

Water diffusion into composite adhesive joints was experimentally studied by means of gravimetric measurements in bond specimens. The main parameters controlling the diffusion in the bond components were obtained from water uptake experiments carried out i ...

Elsevier2014

Electron spin lifetime in chemically synthesized graphene sheets

László Forró, Bálint Náfrádi

Graphene is theoretically expected to be a highly suitable material for spintronic and quantum computation applications. Current experimental reports assign surprisingly low spin lifetimes to graphene and related carbon structures. Recently, we showed a so ...

Wiley-V C H Verlag Gmbh2014

Functionalized graphene grown by oxidative dehydrogenation chemistry

László Forró, Arnaud Magrez, Endre Horvath, Arnaud Walter, Daniel Oberli, Massimo Spina, Jacim Jacimovic, Laurent Syavoch Bernard

We report on a highly efficient growth of graphene using dehydrogenation of acetylene by an oxidative reaction with carbon dioxide. In few seconds, large-area of copper foil used as catalyst of the reaction is fully covered with graphene. The yield of the ...

Pergamon-Elsevier Science Ltd2014

Electrical conduction of photo-patternable SU8-graphene composites

László Forró, Arnaud Magrez, Claudio Grimaldi, Maryam Majidian, Andrea Pisoni

Graphene-based SU8 nanocomposite is developed as a new conductive polymer, which benefits from remarkable electrical conductivity of graphene, along with photo-pattern-ability and transparency of SU8. Well defined structures with minimal resolution of 10 m ...

Pergamon-Elsevier Science Ltd2014

Growth of intermetallic compounds in the Au-In system: Experimental study and 1-D modelling

Michel Rappaz, Aïcha Hessler-Wyser, Léa Deillon

The gold indium system is of primary interest for bonding processes such as solid liquid interdiffusion bonding. In order to optimize the manufacturing parameters, it is essential to know which intermetallic compounds (IMCs) are formed when solid Au and li ...

Elsevier2014

Quasi-elastic neutron scattering in the multi-GPa range and its application to liquid water

Livia Eleonora Bove Kado

We present a method which allows quasi-elastic neutron scattering (QENS) at multi-GPa pressures, i.e., pressure conditions which are an order of magnitude higher than possible with QENS till now. The technique uses an opposed-anvil geometry with a sample c ...

Amer Inst Physics2013

Achieving control of the nanoscale structure of binary alloys is of paramount importance for the design of novel materials with specific properties, leading to, for example, improved reaction rates and selectivity in catalysis, tailored magnetic behavior i ...

Amer Chemical Soc2012