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Affichage de 4391 à 4400 sur 16273

Article dans une revue

Magneto-Optical Study of the Anisotropic Piezoelectric Effect in a Ferroelectric Crystal

A. Klimov, Nicolas Tiercelin, Vladimir Preobrazhensky, A. Sigov, Philippe Pernod

The possibility of using the magneto-optical Kerr effect in thin magnetostrictive films to study the piezoelectric characteristics of ferroelectrics is demonstrated experimentally and theoretically. A 011 PMN-PT ferroelectric crystal with an N*(TbCo 2 /FeCo) magnetostrictive nanostructure deposited…

Bulletin of the Russian Academy of Sciences - Physics, 2019, 83 (7), pp.888-890. ⟨10.3103/S1062873819070207⟩. ⟨hal-02318296⟩

Article dans une revue

New millimeter wave generation scheme for MIMO-OFDM based Radio-over-Fiber system

M. El Yahyaoui, A. El Moussati, Ghaïs El Zein, Kamel Haddadi

This paper proposes a new scheme for the generation and transmission of a MIMO-OFDM signal over optical fiber using a single local oscillator (LO) at 15 GHz. This technique is based on subcarrier multiplexing and Optical Carrier Suppression (OCS) modulation using both Dual-Parallel Mach–Zehnder…

Optics Communications, 2019, 442, pp.101-105. ⟨10.1016/j.optcom.2019.03.017⟩. ⟨hal-02089125⟩

Article dans une revue

Graphite/nanocrystalline zeolite platform for selective electrochemical determination of hepatitis C inhibitor ledipasvir

Shimaa Atty, Mona Mohamed, Lobna Abd el halim, Fatma Fouad, Rabah Boukherroub

A simple and efficient procedure is described for the electrochemical determination of ledipasvir (LDP) in presence of co-formulated drug sofosbuvir (SOF). Herein, a highly sensitive, low-cost electrochemical protocol was utilized to fabricate a zeolite modified carbon paste electrode (ZY/CPE)…

Electroanalysis, 2019, 31 (7), pp.1215-1223. ⟨10.1002/elan.201800500⟩. ⟨hal-02373170⟩

Article dans une revue

Second-order autoregressive model-based Kalman filter for the estimation of a slow fading channel described by the Clarke model: Optimal tuning and interpretation

Ali Houssam El Husseini, Eric Pierre Simon, Laurent Ros

This paper treats the estimation of a flat fading Rayleigh channel with Jakes' Doppler spectrum model and slow fading variations. A common method is to use a Kalman filter (KF) based on an auto-regressive model of order p (AR(p)). The parameters of the AR model can be simply tuned by using the…

Digital Signal Processing, 2019, 90 (July), pp.125-141. ⟨10.1016/j.dsp.2019.04.008⟩. ⟨hal-02112635⟩

Article dans une revue

The Effects of AlN and Copper Back Side Deposition on the Performance of Etched Back GaN/Si HEMTs

Georges Pavlidis, Samuel Kim, Idriss Abid, Malek Zegaoui, F Medjdoub, Samuel Graham

The breakdown voltage of GaN/Si high electron mobility transistors (HEMTs) for power electronics has shown to be improved by removing the silicon substrate. The drawback to this approach is the increase in the device's thermal resistance which limits the power dissipation that the device can…

IEEE Electron Device Letters, 2019, 40 (7), pp.1060-1063. ⟨10.1109/LED.2019.2915984⟩. ⟨hal-02356736⟩

Communication dans un congrès

Micro-Electro-Mechanical-Systems advances for measurements at small scales: the vertical silicon probes technology extended to nearfield optics

B. Walter, E. Mairiaux, Sophie Eliet, Jean-Francois Lampin, Marc Faucher

Instrumentation intending to go beyond the limits of current Atomic Force Microscope setups (AFM), and applications requiring AFM to be integrated in non-standards environmental conditions need sensors that overcome limitations given by available probes. We show that the vertical probe technology…

2019 International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS 2019), Jul 2019, Helsinki, Finland. pp.1-5, ⟨10.1109/MARSS.2019.8860980⟩. ⟨hal-03321928⟩

Article dans une revue

Digital RF transmitter with single-bit ΔΣ M-driven switched-capacitor RF DAC and embedded band filter in 28-nm FD-SOI

Razvan-Cristian Marin, Antoine Frappé, Bruno Stefanelli, Philippe Cathelin, Andreia Cathelin, Andreas Kaiser

This paper presents a single-bit RF transmitter based on single-bit switched-capacitor RF digital-to-analog converters (DACs) embedded in an finite-impulse response (FIR) filter (FIR-DACs). The transmitter system comprises a single-bit quadrature delta-sigma modulator (M), a digital mixer, and a…

IEEE Transactions on Microwave Theory and Techniques, 2019, 67 (7), pp.3200-3209. ⟨10.1109/TMTT.2019.2897929⟩. ⟨hal-02314498⟩

Article dans une revue

Toxicity Effect of Silver Nanoparticles on Photosynthetic Pigment Content, Growth, ROS Production and Ultrastructural Changes of Microalgae Chlorella vulgaris

Layla Hazeem, Gamze Kuku, Etienne Dewailly, Christian Slomianny, Alexandre Barras, Abderrahmane Hamdi, Rabah Boukherroub, Mustafa Culha, Mohamed Bououdina

Silver nanoparticles (Ag NPs) exhibit antibacterial activity and are extensively used in numerous applications. The aim of this study was to examine the toxic effect of Ag NPs on the marine microalga, Chlorella vulgaris. The microalgae, at the exponential growth phase, were treated with different…

Nanomaterials, 2019, 9 (7), pp.914. ⟨10.3390/nano9070914⟩. ⟨hal-02373174⟩

Article dans une revue

Intrinsic transport properties of nanoporous graphene highly suitable for complementary field-effect transistors

Jing Li, Christophe Delerue

The recent success to synthesize an ordered array of pores in graphene by a bottom-up approach (Moreno et al 2018 Science 360 199) yields a semiconducting nanoporous graphene with a bandgap of 0.6 eV. In this paper, we present calculations of the intrinsic carrier mobility in this new type of two-…

2D Materials, 2019, 6 (3), pp.035026. ⟨10.1088/2053-1583/ab1c25⟩. ⟨hal-02133315⟩

Article dans une revue

Broadband vibrational energy harvesting with a spherical piezoelectric transducer devoted to underwater wireless sensor networks

Daher Diab, Nikolay Smagin, Fabrice Lefebvre, Georges Nassar, Samih Isber, Fawaz El Omar, Adnan Naja

A new sensing node container based on a spherical piezoelectric transducer is proposed. This device provides broadband vibrational energy harvesting and sensing facilities intended for underwater wireless sensor networks. The transducer is composed of two acrylic glass (PMMA) half-spherical shells…

Acta Acustica united with Acustica, 2019, 105 (4), pp.616-629. ⟨10.3813/AAA.919342⟩. ⟨hal-03139115⟩