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16 papers · 1 filter
Generalized interface models for transport phenomena: unusual scale effects in composite nanomaterials
Fabio Pavanello, Fabio Manca, Pier Luca Palla +1
The effective transport properties of heterogeneous nanoscale materials and structures are affected by several geometrical and physical factors. Among them the presence of imperfec…
A Crown-Ether Loop-Derivatized Oligothiophene Doubly Attached on Gold Surface as Cation-Binding Switchable Molecular Junction
Truong Khoa Tran, Kacem Smaali, Marie Hardouin +7
A crown-ether dithiol quaterthiophene is synthesized for its covalent immobilization by double fixation on gold surface. While the corresponding dithioester precursor exhibits Pb2+…
Impurity impact ionization avalanche in p-type diamond
Vincent Mortet, A. Soltani
Electrical conductivity of a highly boron doped chemical vapor deposited diamond thin film has been studied at different temperatures under high electric field conditions. Current-…
Optical absorption of silicon nanowires
Tao Xu, Yannick Lambert, Christophe Krzeminski +6
We report on simulations and measurements of the optical absorption of silicon nanowires (NWs) versus their diameter. We first address the simulation of the optical absorption base…
Phonons in Slow Motion: Dispersion Relations in Ultra-Thin Si Membranes
John Cuffe, Emigdio Chavez, Andrey Shchepetov +11
We report the changes in dispersion relations of hypersonic acoustic phonons in free-standing silicon membranes as thin as \sim 8 nm. We observe a reduction of the phase and group…
Molecule-Electrode Interface Energetics in Molecular Junction: a Transition Voltage Spectroscopy Study
Guillaume Ricœur, Stéphane Lenfant, David Guérin +1
We assess the performances of the transition voltage spectroscopy (TVS) method to determine the energies of the molecular orbitals involved in the electronic transport though molec…