Publications

• Article dans une revue

On detection method for soft iterative decoding in the presence of impulsive interference

Vincent Dimanche, Alban Goupil, Laurent Clavier, Guillaume Gelle

This paper deals with the performance improvement of soft iterative decoders in impulsive interference modeled by additive noise. In case of $alpha$-stable noise, the inputs of the belief propagation decoder are too complex to compute. We propose to use an approximation of the log likelihood ratio…

IEEE Communications Letters, 2014, 18, pp.945-948. ⟨10.1109/LCOMM.2014.2320921⟩. ⟨hal-01005616⟩

• Article dans une revue

Temperature dependence of dynamic hysteresis behavior in Pb0.4Sr0.6TiO3 ferroelectric films

Kui Li, Tao Li, Gang Du, Denis Remiens, Xianlin Dong, Genshui Wang

The temperature (T) dependence of dynamic hysteresis behavior is investigated in low temperature crystallized Pb0.4Sr0.6TiO3 thin films between 85 K and 340 K. It was found that the temperature scaling relations for hysteresis area 〈A〉, remnant polarization Pr and coercive field Ec take the…

Solid State Communications, 2014, 192, pp.89-92. ⟨10.1016/j.ssc.2014.05.007⟩. ⟨hal-01005622⟩

• Article dans une revue

Geometrical optics-based model for dielectric constant and loss tangent free-space measurement

Kamel Haddadi, Tuami Lasri

A microwave free-space reflection method for determining the complex permittivity of planar dielectric materials is demonstrated. The method makes use of the measurement of the near-field microwave reflection coefficient of a metal-backed sample. The modeling of the structure and its calibration…

IEEE Transactions on Instrumentation and Measurement, 2014, 63, pp.1818-1823. ⟨10.1109/TIM.2013.2297811⟩. ⟨hal-01005621⟩

• 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

Millimeter-wave in situ tuner : an efficient solution to extract the noise parameters of SiGe HBTs in the whole 130-170 GHz range

Marina Deng, Laurent Poulain, Daniel Gloria, Thomas Quémerais, Pascal Chevalier, Sylvie Lepilliet, Francois Danneville, Gilles Dambrine

SiGe HBT noise parameters ( , and ) are for the first time extracted in the entire 130 - 170 GHz frequency range. This achievement is realized using a D-band on-chip source-pull system, which includes an impedance tuner integrated with the transistor under test. On-wafer noise power measurements on…

IEEE Microwave and Wireless Components Letters, 2014, 24, pp.649-651. ⟨10.1109/LMWC.2014.2331762⟩. ⟨hal-01059836⟩

• Article dans une revue

Enhancement of thermoelectric power factor in NaxCoO2/Au multilayers

Xiaohui Zhao, Haifeng Wang, Shufang Wang, El Hadj Dogheche, Jianglong Wang, Guangsheng Fu

NaxCoO2/Au thin film multilayers, with a thickness of the Au layer of 0.5–12 nm, have been fabricated on c-Al2O3 by post annealing of the CoO/Au thin film multilayers in Na vapor at high temperature in air. X-ray diffraction measurements revealed that the resulting NaxCoO2 layer was c-axis oriented…

RSC Advances, 2014, 4 (100), pp.57148-57152. ⟨10.1039/C4RA07319C⟩. ⟨hal-03560771⟩

• Proceedings/Recueil des communications

Note sulle Fortificazioni nei Quesiti di Tartaglia. Libro Sesto e sua Gionta (Notes on Fortifications in the Tartaglia Questions. Book Sixth and his Gionta)

Raffaele Pisano

Proceedings of the 5th History of Engineering Conference, II, Cuzzolin, pp.815-825, 2014, 978-88-87479-11-9. ⟨hal-04517933⟩

• 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

From 'petal effect' to 'lotus effect' on the highly flexible Silastic S elastomer microstructured using a fluorine based reactive ion etching process

Christophe Frankiewicz, Farzam Zoueshtiagh, Abdelkrim Talbi, Jeremy Streque, Philippe Pernod, Alain Merlen

A fluorine-based reactive ion etching (RIE) process has been applied on a new family of silicone elastomers named 'Silastic S' for the first time. Excellent mechanical properties are the principal advantage of this elastomer. The main objective of this study was (i) to develop a new…

Journal of Micromechanics and Microengineering, 2014, 24 (11), ⟨10.1088/0960-1317/24/11/115008⟩. ⟨hal-03277849⟩

• Communication dans un congrès

Influence of an interfacial AlxIn1-xSb layer on the strain relaxation and surface morphology of thin GaSb layers epitaxially grown on GaAs(001)

Mathieu Danoy, Pierre-François Angry, Julien Gavrel, Charlène Brillard, L. Desplanque, Y. Wang, P. Ruterana, Xavier Wallart

This work focuses on the strain relaxation and surface morphology of 10 ML thick GaSb layers on GaAs. It is shown that full relaxation is never reached for this thickness. The use of an AlSb interfacial layer only slightly improves strain relaxation but greatly reduces surface roughness. Finally,…

26th International Conference on Indium Phosphide and Related Materials, IPRM 2014, Compound Semiconductor Week, CSW 2014, 2014, Montpellier, France. ⟨hal-00992670⟩