Concept

Orbitale antiliante

Publications associées (60)

How to Tickle Spins with a Fourier Transform NMR Spectrometer

In the long bygone days of continuous-wave nuclear magnetic resonance (NMR) spectroscopy, a selected transition within a multiplet of a high-resolution spectrum could be irradiated by a highly selective continuous-wave (CW) radio-frequency (rf) field with ...

Wiley-Blackwell2013

Antibonding ground state in photonic crystal molecules

Laurent Balet, Massimo Gurioli

We employ a far-field analysis of the angular emission pattern to experimentally assess the symmetry of localized modes in coupled photonic-crystal cavities. We demonstrate that the spatial distribution of localized modes in photonic-crystal nanocavities m ...

2012

Bonding and Charge Transfer in Metal-Organic Coordination Networks on Au(111) with Strong Acceptor Molecules

Klaus Kern, Sebastian Stepanow, Alexander Langner, Nan Jiang

The geometric and electronic structure of two structurally similar metal organic networks grown on the Au(111) surface is investigated by scanning tunnelling microscopy (STM) and spectroscopy (STS) combined with density functional theory (DFT) calculations ...

Amer Chemical Soc2012

Growth and characterization of fullerene nanocrystals on NaCl/Au(111)

Wolf-Dieter Schneider, François Patthey, Marina Pivetta, Frédéric Rossel, Elizabeta Cavar

The growth of fullerene nanocrystals, composed of only C-60, only C-70, or a mixture of both fullerenes, has been investigated by scanning tunneling microscopy (STM). The nanocrystals, formed on a NaCl ultrathin layer partially covering a Au(111) surface, ...

2011

First-Principles Modeling of Optically Active Organic Molecules in Solar Cell Devices and Biological Environments

Jun Ren

With the increasing cognition of the importance of organic molecules, they are widely applied in printing, biological and pharmacological fields, because of their special capabilities of harvesting solar light, scavenging free radicals, and chelating metal ...

EPFL2011

Advances, Challenges and Opportunities in 3D CMOS Sequential Integration

Giovanni De Micheli, Pierre-Emmanuel Julien Marc Gaillardon, Mohamed Haykel Ben Jamaa, Shashi Kanth Bobba, Laetitia Danielle Philippine Baud

3D sequential integration enables the full use of the third dimension thanks to its high alignment performance. In this paper, we address the major challenges of 3D sequential integration: in particular, the control of molecular bonding allows us to obtain ...

2011

Improving the Electrical Conductivity of Carbon Nanotube Networks: A First-Principles Study

Nicola Marzari

We address the issue of the low electrical conductivity observed in carbon nanotube networks using first-principles calculations of the structure, stability, and ballistic transport of different nanotube junctions. We first study covalent linkers, using th ...

2011

Ultra High-Resolution NMR: Sustained Induction Decays of Long-Lived Coherences

Geoffrey Bodenhausen, Aurélien Bornet, Sami Jannin

Long-lived coherences (LLCs) in homonuclear pairs of chemically inequivalent spins can be excited and sustained during protracted radio frequency irradiation periods that alternate with brief windows for signal observation. Fourier transformation of the su ...

2011

Theoretical investigation of the ultrafast dissociation of ionised biomolecules immersed in water: Direct and indirect effects

Ivano Tavernelli, Pablo Lopez Tarifa

Theoretical simulations are particularly well suited to investigate, at a molecular level, direct and indirect effects of ionising radiations in DNA, as in the particular case of irradiation by swift heavy ions such as those used in hadron therapy. In the ...

2010

Spatially Extended Kondo State in Magnetic Molecules Induced by Interfacial Charge Transfer

Nicola Marzari

An extensive redistribution of spin density in TBrPP-Co molecules adsorbed on a Cu(111) surface is investigated by monitoring Kondo resonances at different locations on single molecules. Remarkably, the width of the Kondo resonance is found to be much larg ...

2010

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