Consulter le flux RSS

Publications

Affichage des publications 631 à 640 sur 710 au total

Chimie

A hybrid ruthenium alkynyl/zinc porphyrin "Cross Fourchée" with large cubic nonlinear optical properties.

A new Zn(ii) porphyrin-cored ruthenium alkynyl dendrimer (2) containing twelve Ru(κ2-dppe)2 bis-alkynyl fragments has been prepared in two steps from 5,10,15,20-tetra(4-ethynylphenyl)porphyrinatozinc(ii) and shown to be highly active for third…

Areej Merhi, Guillaume Grelaud, Katy A Green, Ngo Hoang Minh, Michael Reynolds, Isabelle Ledoux, Adam Barlow, Genmiao Wang, Marie P Cifuentes, Mark G Humphrey, Frédéric Paul, Christine O Paul-Roth

Dalton Transactions -

Physique

The nature of domain walls in ultrathin ferromagnets revealed by scanning nanomagnetometry

The capacity to propagate magnetic domain walls with spin-polarized currents underpins several schemes for information storage and processing using spintronic devices. A key question involves the internal structure of the domain walls, which governs…

J. P. Tetienne, T. Hingant, L. J. Martinez, S. Rohart, André Thiaville, L Herrera Diez, K. Garcia, J. P. Adam, J. V. Kim, J. F. Roch, Ioan Mihai Miron, Gilles Gaudin, Laurent Vila, B. Ocker, Dafiné Ravelosona, V. Jacques

Nature Communications -

Autre

Universal non-resonant absorption in carbon nanotubes

Photoluminescence excitation measurements in semi-conducting carbon nanotubes show a systematic non-resonant contribution between the well known excitonic resonances. Using a global analysis method, we were able to delineate the contribution of each…

Fabien Vialla, Ermin Malic, Benjamin Langlois, Yannick Chassagneux, Carole Diederichs, Emmanuelle Deleporte, Philippe Roussignol, Jean‐sébastien Lauret, Christophe Voisin

Physical Review B: Condensed Matter and Materials Physics (1998-2015) -

Matière Condensée

Effects of anisotropy and size of polar nano thin films on their thermal conductivity due to surface phonon-polaritons

The effects of the permittivity anisotropy and size of a nano thin film on its thermal conductivity due to surface phonon-polaritons are studied. We demonstrate that this thermal conductivity is a linear combination of the inverse first and third…

Jose Ordonez-Miranda, Laurent Tranchant, Beomjoon Kim, Yann Chalopin, Thomas Antoni, Sebastian Volz

Japanese Journal of Applied Physics, part 2 : Letters -

Matière Condensée

Confinement in single walled carbon nanotubes investigated by spectroscopic ellipsometry

Thick films of single walled carbon nanotubes (SWCNTs) with different diameter and chirality distributions are characterized by combining transmission electron microscopy and spectroscopic ellipsometry. The dependence of the dielectric function with…

Y. Battie, Damien Jamon, Jean‐sébastien Lauret, Qingyuan Gu, Maud Gicquel-Guézo, A. En Naciri, Annick Loiseau

Thin Solid Films -

Autre

Unifying the low-temperature photoluminescence spectra of carbon nanotubes: the role of acoustic phonon confinement.

At low temperature the photoluminescence of single-wall carbon nanotubes show a large variety of spectral profiles ranging from ultra narrow lines in suspended nanotubes to broad and asymmetrical line-shapes that puzzle the current interpretation in…

Fabien Vialla, Yannick Chassagneux, Robson Ferreira, Cyrielle Roquelet, Carole Diederichs, Guillaume Cassabois, Philippe Roussignol, Jean‐sébastien Lauret, Christophe Voisin

Physical Review Letters -