Publications

• Article dans une revue

Bragg band gaps tunability in an homogeneous piezoelectric rod with periodic electrical boundary conditions

Sébastien Degraeve, Christian Granger, Bertrand Dubus, Jerome O. Vasseur, Mai Pham Thi, Anne-Christine Hladky

An homogeneous piezoelectric rod is shown to exhibit Bragg band gaps when an electrical boundary condition is applied periodically with the help of metallic electrodes. An analytical model is developed which formulation depends on the applied electric boundary condition and reveals that Bragg band…

Journal of Applied Physics, 2014, 115, 194508, 8 p. ⟨10.1063/1.4876757⟩. ⟨hal-00995265⟩

• Communication dans un congrès

Scale effects induced by imperfect interfaces in nanomaterials transport properties

Fabio Pavanello, F. Manca, Pier Luca Palla, Evelyne Lampin, Fabrizio Cleri, Stefano Giordano

One of the crucial factors governing the physical properties of nanomaterials is the complex behavior of the interfaces[1]. While at the macroscopic level their specific role is usually neglected, in nanostructured systems the properties of the contact between phases have to be carefully defined.…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium E - Defect-induced effects in nanomaterials, 2014, Lille, France. ⟨hal-00964099⟩

• Communication dans un congrès

Distributional upper bound on the interference in spatial wireless multiuser ultrawideband communication systems

Gareth W. Peters, Ido Nevat, Laurent Clavier, François Septier

We develop a novel distributional upper bound on the interference created in an ultra-wideband wireless communication systems under two general assumptions: the first is that there is an unknown number of interferers who are distributed according to a homogeneous Poisson point process randomly in…

IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2014, 2014, Florence, Italy. pp.5764-5768, ⟨10.1109/ICASSP.2014.6854708⟩. ⟨hal-01056963⟩

• Article dans une revue

Near-self-imaging cavity for three-mode optoacoustic parametric amplifiers using silicon microresonators

J. Liu, F. A. Torres, Y. Ma, C. Zhao, L. Ju, D. G. Blair, S. Chao, I. Roch-Jeune, R. Flaminio, C. Michel, K.Y. Liu

Three-mode optoacoustic parametric amplifiers (OAPAs), in which a pair of photon modes are strongly coupled to an acoustic mode, provide a general platform for investigating self-cooling, parametric instability and very sensitive transducers. Their realization requires an optical cavity with…

Applied optics, 2014, 53, pp.841-849. ⟨10.1364/AO.53.000841⟩. ⟨hal-00966071⟩

• Communication dans un congrès

From semiconductor nanocrystals to artificial graphene and topological insulator

Efterpi Kalesaki, Christophe Delerue, Cristiane Morais Smith, Wouter Beugeling, Guy Allan, Daniel Vanmaekelbergh

Recent advancements in colloidal chemistry indicate that two-dimensional single-crystalline sheets of semiconductors forming a honeycomb lattice can be synthesized from semiconductor nanocrystals [1]. We perform atomistic tight-binding calculations of the band structure of CdSe sheets with such a…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium F - Established and emerging nanocolloids : from synthesis & characterization to applications, 2014, Lille, France. ⟨hal-00966143⟩

• Communication dans un congrès

Theory of self-assembled nanoparticle networks as logic building blocks

Fabrizio Cleri, Sergio Carrillo, Christophe Krzeminski

Recently, self-assembled networks of functionalized nano particles (NPSAN) were proposed as a prototype of innovative devices [1], with switchable NP-NP links. Thanks to the chemical properties of the surface molecules, these would ultimately show memristive behaviour, as building blocks of a…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium S - Memristormaterials, mechanisms and devices for unconventional computing, 2014, Lille, France. ⟨hal-00966154⟩

• Article dans une revue

Dielectric relaxation analysis of Pb(Zr_0.54,Ti_0.46)O₃ thin films: electric field dependence

Freddy Ponchel, N. Sama, Denis Remiens, T. Lasri

350 nm-thick Perovskite PbZr0.54Ti0.46O3 (PZT) thin films were deposited on Al2O3 substrates by sputtering with and without an additional 10-nm-thick TiOx buffer layer. X-ray diffraction patterns showed that in presence of TiOx buffer layer, PZT film was highly oriented along the (111) direction…

• Article dans une revue

Negative effective mass density of acoustic metamaterial plate decorated with low frequency resonant pillars

Mourad Oudich, Bahram Djafari-Rouhani, Yan Pennec, M. Badreddine Assouar, Bernard Bonello

We investigate the elastic wave dispersion by a phononic metamaterial plate containing low frequency resonator stubs arranged periodically over the plate. We show that this system not only provides stop bands for wavelengths much larger than the periodicity but also displays negative behavior of…

Journal of Applied Physics, 2014, 116 (18), ⟨10.1063/1.4901462⟩. ⟨hal-01233805⟩

• Article dans une revue

Cross-talk artefacts in Kelvin probe force microscopy imaging : a comprehensive study

Sophie Barbet, Michka Popoff, Heinrich Diesinger, D. Deresmes, Didier Theron, Thierry Melin

We provide in this article a comprehensive study of the role of ac cross-talk effects in Kelvin Probe Force Microscopy (KPFM), and their consequences onto KPFM imaging. The dependence of KPFM signals upon internal parameters such as the cantilever excitation frequency and the projection angle of…

Journal of Applied Physics, 2014, 115 (14), pp.144313. ⟨10.1063/1.4870710⟩. ⟨hal-00981142⟩

• Article dans une revue

[Review] Generation of transversal envelope soliton in polymeric and wooden rods

M. de Billy, Anne-Christine Hladky

This paper is concerned with the probing of the transversal envelope solitons propagation in circular waveguides when a set of requirements (non-linearity and dispersion) are fulfilled in the waveguide and balanced. The basic idea is to analyze the shape of an acoustic pulse after it has traveled…

Ultrasonics, 2014, 54, pp.1281-1288. ⟨10.1016/j.ultras.2014.01.016⟩. ⟨hal-00969120⟩