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Affichage de 6931 à 6940 sur 16105

Article dans une revue

Optomechanic interaction in a corrugated phoxonic nanobeam cavity

Mourad Oudich, Said El-Jallal, Yan Pennec, Bahram Djafari-Rouhani, Jordi Gomis-Bresco, Daniel Navarro-Urrios, Clivia M. Sotomayor Torres, Alejandro Martínez, Abdelkader Makhoute

The interaction between phonons and photons is investigated theoretically in a phoxonic cavity inside a corrugated nanobeam waveguide presenting band gaps for both electromagnetic and elastic waves. The structure is made by drilling periodic holes on a silicon nanobeam with lateral periodic stubs...

Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2014, 89, 245122, 9 p. ⟨10.1103/PhysRevB.89.245122⟩. ⟨hal-01015199⟩

Communication dans un congrès

Fabrication and characterization of CVD grown graphene based field-effect transistor

Wei Wei, Geetanjali Deokar, Mohamed Moez Belhaj, D. Mele, Emiliano Pallecchi, Emmanuelle Pichonat, Dominique Vignaud, Henri Happy

In this work, we present both fabrication process and characterization of graphene field-effect transistors. Large scale monolayer graphene was grown by chemical vapor deposition (CVD) on Cu foils and transferred over pre-patterned back-gated devices on Si/SiO2 substrate. Scanning electron...

44th European Microwave Conference and 9th European Microwave Integrated Circuits Conference, EuMC/EuMIC 2014, Oct 2014, Rome, Italy. pp.367-370, ⟨10.1109/EuMC.2014.6986446⟩. ⟨hal-03335830⟩

Communication dans un congrès

Estimation of 60-GHz channels based on energy detection

Stephane Mebaley-Ekome, Laurent Clavier, Antoine Frappé, Eric Pierre Simon, Ilias Sourikopoulos

Estimation of time-varying channels is a common challenge for receiver architectures in wireless communications. Coherent receivers may require good knowledge of the channel impulse response for demodulation of the received symbols, after equalization of a dense multipath channel. However, very few...

2014 IEEE International Conference on Ultra-WideBand (ICUWB), Sep 2014, Paris, France. pp.68-73, ⟨10.1109/ICUWB.2014.6958953⟩. ⟨hal-03377051⟩

Communication dans un congrès

Highly tunable Fabry-Perot resonators using piezoelectric phononic crystals

Bertrand Dubus, Marie -Fraise Ponge, Anne-Christine Hladky, Jerome O. Vasseur, Mai Phamthi

Theoretical and experimental analyses of piezoelectric stacks submitted to periodical electrical boundary conditions via electrodes, are conducted. These structures are shown to exhibit Bragg band gaps which are switched on or off by setting electrodes in short or open circuit. Band gap frequency...

IEEE International Ultrasonics Symposium (IUS), Sep 2014, Chicago, United States. paper 5B-6, 154-157, ⟨10.1109/ULTSYM.2014.0039⟩. ⟨hal-03300131⟩

Article dans une revue

Effect of interface configurations on the dynamic scaling behavior of Pb(Zr0.53Ti0.47)O3 thin films

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

The ferroelectric hysteresis and the scaling relations of hysteresis area ⟨A⟩ against field amplitude E and frequency f in Pb(Zr0.53Ti0.47)O3 thin films using platinum and LaNiO3 (LNO) as both bottom and top electrodes were systematically investigated. Interestingly, it was found that the influence...

Applied Physics Letters, 2014, 104, 092904, 5 p. ⟨10.1063/1.4867506⟩. ⟨hal-00957814⟩

Article dans une revue

A modal formulation for the propagation of guided waves in straight and curved pipes and the scattering at their junction

M. El Bakkali, A. Lhémery, V. Baronian, Sébastien Grondel

The well-established semi-analytic finite element (SAFE) method for predicting guided wave propagation in straight guides is extended to deal with curved pipes using curvilinear coordinates system, following developments by Treyssède and Laguerre [J. Sound Vib. 329 1702-16 (2010)] for helical wires...

Journal of Physics: Conference Series, 2014, 12th Anglo-French Physical Acoustics Conference (AFPAC2013) 16–18 January 2013, Fréjus, France, 498, pp.012012. ⟨10.1088/1742-6596/498/1/012012⟩. ⟨hal-00975724⟩

Article dans une revue

Optical waveguiding properties into porous gallium nitride structures investigated by prism coupling technique

Bandar Alshehri, Seung-Min Lee, Jin-Ho Kang, Su-Hyun Gong, Sang-Wan Ryu, Yong-Hoon Cho, El Hadj Dogheche

In order to modulate the refractive index and the birefringence of Gallium Nitride (GaN), we have developed a chemical etching method to perform porous structures. The aim of this research is to demonstrate that optical properties of GaN can be tuned by controlling the pores density. GaN films are...

Applied Physics Letters, 2014, 105, 051906, 4 p. ⟨10.1063/1.4892528⟩. ⟨hal-01056953⟩

Communication dans un congrès

A synthesis of theoretical and experimental study on power line communication over an aircraft tree-shaped network

Virginie Degardin, Pierre Laly, M. Lienard, Pierre Degauque

This paper gives an overview of the theoretical and experimental approach which has been carried out in order to study the feasibility of broadband power line communication in aircraft. The network which has been chosen corresponds to part of a cabin lighting system and whose tree shape...

2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS), Aug 2014, Beijing, China. E06 - EMC in Wired and Wireless Systems, paper E06.1, 4 p., ⟨10.1109/URSIGASS.2014.6929522⟩. ⟨hal-03514441⟩

Article dans une revue

Guided waves in multilayered plates

Jiangong Yu, Jean-Etienne Lefebvre, Lahoucine Elmaimouni

Conventional orthogonal polynomial approach can solve the multilayered plate only when the material properties of two adjacent layers do not change significantly. This paper developed an improved orthogonal polynomial approach to solve wave propagation in multilayered plates with very dissimilar...

Acta Mechanica Solida Sinica, 2014, 27 (5), pp. 542-550. ⟨hal-03644998⟩

Communication dans un congrès

Nonlinear measurement of non periodic pulse train with mixer based NVNA dedicated to radar power amplifier

Vincent Bridier, Damien Ducatteau, Maxime Olivier, Hans-Joachim Simon, François Graux, Philippe Eudeline, Gilles Dambrine

A measurement of time domain waveforms using a commercial two ports mixer based NVNA to measure a non periodic repetitive radar pulse train as a periodic one was performed. Then for the first time a 20GHz six port mixer based NVNA able to measure three different frequencies at the same time is...

International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits, INMMIC 2014, 2014, Leuven, Belgium. 3 p., ⟨10.1109/INMMIC.2014.6815076⟩. ⟨hal-01005646⟩