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25 papers · 1 filter
Role of fluctuations and nonlinearities on field emission nanomechanical self-oscillators
Thomas Barois, S. Perisanu, Anthony AYARI +2
A theoretical and experimental description of the threshold, amplitude, and stability of a self-oscillating nanowire in a field emission configuration is presented. Two thresholds…
Reconsidering the possibility of room temperature ferromagnetism in Mn doped Zirconium oxide
Akash Chakraborty, Georges Bouzerar
The possibility to induce long range ferromagnetic order by doping oxides with transition metal ions has become a very exciting challenge in the last decade. Theoretically, it has…
Anomalies in bulk supercooled water at negative pressure
Gaël Pallares, Mouna El Mekki Azouzi, Miguel Angel Gonzalez +4
Water is the most familiar liquid, and arguably the most complex. Anomalies of supercooled water have been measured during decades, and competing interpretations proposed. Yet, a d…
Down Converter Device Combining Rare-Earth Doped Thin Layer and Photonic Crystal for c-Si Based Solar Cell
Thierry Deschamps, Emmanuel Drouard, Romain Peretti +7
The aim of the study is to develop ultra-compact structures enabling an efficient conversion of single high energy photon (UV) to two lower energy photons (IR). The proposed struct…
Strong dynamical effects during stick-slip adhesive peeling
Marie-Julie Dalbe, Stéphane Santucci, Pierre-Philippe Cortet +1
We consider the classical problem of the stick-slip dynamics observed when peeling a roller adhesive tape at a constant velocity. From fast imaging recordings, we extract the depen…
Optimizing water permeability through the hourglass shape of aquaporins
Simon Gravelle, Laurent Joly, François Detcheverry +3
The ubiquitous aquaporin channels are able to conduct water across cell membranes, combining the seemingly antagonist functions of a very high selectivity with a remarkable permeab…