Concept

Carbone amorphe

Publications associées (64)

A 6.7 MHz Nanoelectromechanical Ring Oscillator Using Curved Cantilever Switches Coated with Amorphous Carbon

Montserrat Fernandez-Bolanos Badia, Antonios Bazigos, Daniel Grogg

Nanoelectromechanical (NEM) switches have the potential to complement or replace traditional CMOS transistors in the area of ultra-low power digital electronics. This paper reports the demonstration of the first ring oscillator built using cell-level digit ...

IEEE2014

Nanoelectromechanical digital logic circuits using curved cantilever switches with amorphous-carbon-coated contacts

Montserrat Fernandez-Bolanos Badia, Antonios Bazigos, Daniel Grogg

Nanoelectromechanical (NEM) switches have the potential to complement or replace traditional CMOS transistors in the area of ultra-low-power digital electronics. This paper reports the demonstration of prototype circuits including the first 3-stage ring os ...

2014

Functionalized Carbon Nanostructures from Oligoyne Carboxylates

Stephen Schrettl

Functional nanostructured carbon materials, including two-dimensionally extended nanosheets, offer intriguing perspectives for applications in emerging technologies such as hydrogen storage, lithium storage, transition metal free catalysis, or solar abso ...

EPFL2014

Effect of carbon material on Pd catalyst for formic acid electrooxidation reaction

Ligang Feng

Effect of several usually used carbon materials on Pd catalyst for formic acid electrooxidation reaction is studied by physical characterization and electrochemical measurements. New active sites are formed due to the Pd and carbon interaction which is con ...

Elsevier2014

Origin of Fermi-level pinning at GaAs surfaces and interfaces

Alfredo Pasquarello, Giacomo Francesco Leonardo Miceli, Davide Colleoni

Through first-principles simulation methods, we assign the origin of Fermi-level pinning at GaAs surfaces and interfaces to the bistability between the As-As dimer and two As dangling bonds, which transform into each other upon charge trapping. This defect ...

Institute of Physics2014

Carbon counter electrodes efficient catalysts for the reduction of Co(III) in cobalt mediated dye-sensitized solar cells

Ulf Anders Hagfeldt

The solar energy conversion efficiency of cobalt-based dye-sensitized solar cells using carbon materials as the catalyst was found similar or better than that of platinum. Â© 2014 Elsevier Ltd. All rights reserved. ...

2014

Optofluidic Microstructures Containing Liquid Crystals

Andreas Vasdekis, Luciano De Sio, Marilisa Romito

We report our recent efforts on the realization and characterization of a conductive polydimethylsiloxane (PDMS) microstructure containing liquid crystals (LC). The sample has been realized by means of a layer by layer strategy. An indium tin oxide (ITO) l ...

Taylor & Francis Ltd2013

Revealing and Accelerating Slow Electron Transport in Amorphous Molybdenum Sulphide Particles for Hydrogen Evolution Reaction

Michael Graetzel, Xile Hu, Thomas Moehl, Heron Vrubel

Electrochemical impedance spectroscopy is used to identify a slow electron transport process in hydrogen evolution catalysed by amorphous molybdenum sulphides on glassy carbon. A new chemical synthesis leads to an amorphous molybdenum sulfide catalyst with ...

Royal Soc Chemistry2013

Carbon-graphene nanocomposite cathodes for improved Co(II/III) mediated dye-sensitized solar cells

Michael Graetzel, Jun Ho Yum, Morgan Mertens Stefik, Yelin Hu

Cobalt-based electrolytes have significantly advanced the tunability and performance of dye-sensitized solar cells. The typically used platinum cathodes are expensive and non-optimal for cobalt complexes, motivating the search for replacements. Graphene na ...

Royal Society of Chemistry2013

Low-Temperature Preparation of Tailored Carbon Nanostructures in Water

Anna Fontcuberta i Morral, Holger Frauenrath, Vincent Laporte, Davide Demurtas, Bernt Ketterer, Tobias Hoheisel, Ruth Szilluweit, Martin Fritzsche, Raffaele Mezzenga

The development of low-temperature carbonization procedures promises to provide novel nanostructured carbon materials that are of high current interest in materials science and technology. Here, we report a "wet-chemical" carbonization method that utilizes ...

American Chemical Society2012

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