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Affichage de 4461 à 4470 sur 16090

Article dans une revue

Inorganic, Organic, and Perovskite Halides with Nanotechnology for High-Light Yield X- and gamma-ray Scintillators

F. Maddalena, L. Tjahjana, A. Z. Xie, S. W. Zeng, H. Wang, P. Coquet, W. Drozdowski, Christophe Dujardin, C. Dang, M. D. Birowosuto

Trends in scintillators that are used in many applications, such as medical imaging, security, oil-logging, high energy physics and non-destructive inspections are reviewed. First, we address traditional inorganic and organic scintillators with respect of limitation in the scintillation light...

Crystals, 2019, 9, pp.88. ⟨10.3390/cryst9020088⟩. ⟨hal-02285858⟩

Communication dans un congrès

Plasmon induced transparency in graphene-based side coupled two rectangular nano-cavities-like structures

A. Noual, M. Amrani, E.H. El Boudouti, Yan Pennec, Bahram Djafari-Rouhani

We investigate numerically the plasmon analogue of electromagnetic induced transparency (EIT) in a compact graphene-based waveguide coupled to two rectangular nano-cavities-like structures made out of graphene nanoribbons. The cavities are placed symmetrically on each side of the bus waveguide,...

2018 International Conference on Materials and Environmental Science, ICMES 2018, Apr 2018, Saidia, Morocco. pp.1076-1083, ⟨10.1016/j.matpr.2019.04.074⟩. ⟨hal-03508191⟩

Article dans une revue

Electromagnetic physical modeling of a gallium nitride distributed transferred electron device based planar waveguide structure THz oscillator

Christophe Dalle

The potential of a planar waveguide structure terahertz oscillator based on a gallium nitride distributed transferred electron device is theoretically investigated. The circuit numerical physical modeling relies on a two-dimensional time-domain electromagnetism/transport simulator. It is based on...

Advanced Electromagnetics, 2019, 8 (4), pp.89-102. ⟨10.7716/aem.v8i4.1214⟩. ⟨hal-02395343⟩

Article dans une revue

An optical power divider based on mode coupling using GaN/Al2O3 for underwater communication

Retno Wigajatri Purnamaningsih, Nji Raden Poespawati, Tomy Abuzairi, El Hadj Dogheche

This paper details the design of a 1 \texttimes 8 optical power divider, using a gallium nitride (GaN) semiconductor on sapphire, which can be applied to underwater optical wireless communication. The design consists of nine parallel rectangular waveguides which are based on mode coupling phenomena...

Photonics, 2019, 6 (2), pp.63. ⟨10.3390/photonics6020063⟩. ⟨hal-03140501⟩

Communication dans un congrès

22nm ultra-thin body and buried oxide FDSOI RF noise performance

Ousmane Kane, Luca Lucci, Pascal Scheiblin, Sylvie Lepilliet, Francois Danneville

The drastic downscaling of the transistor size along with advances in material sciences allowed the development of low power CMOS technologies with competitive RF figure of merits suitable for millimeter applications. In this context, this paper presents the RF and noise characterization (up to 110...

IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Jun 2019, Boston, United States. ⟨10.1109/RFIC.2019.8701740⟩. ⟨hal-03272699⟩

Communication dans un congrès

Multiple antenna receiver under impulsive SαS noise

Nicolas de Araujo Moreira, Laurent Clavier

In a usual MIMO framework when noise is assumed Gaussian, the channel matrix can be estimated with a Least Square approach. In addition, the Euclidean distance is optimal to detect the transmitted symbol. However, in dynamic interference, the Gaussian assumption is no longer valid. In this case,...

WCNC 2019, 17th IEEE Wireless Communications and Networking Conference, Apr 2019, Marrakech, Morocco. 6 p., ⟨10.1109/WCNC.2019.8885790⟩. ⟨hal-03270115⟩

Communication dans un congrès

Development of a Dual-band Printed Antenna Based on a Nanocomposite Material made of Polyaniline charged by Iron-Nickel Nanopowder

Z. Hamouda, J.-L. Wojkiewicz, A.A. Pud, Lamine Kone, S. Bergheul, T. Lasri

One of the major challenges of printed electronics is to develop materials for flexible devices. Among these latter, antennas occupy a place of choice because of the new applications which are emerging. In this paper a flexible antenna based on a new nanocomposite, Polyaniline (PANI) charged by...

13th European Conference on Antennas and Propagation, EuCAP 2019, Mar 2019, Krakow, Poland. pp.8740128. ⟨hal-03538360⟩

Communication dans un congrès

FTIR and X-ray micro-tomography on Itokawa particles and carbonaceous chondrites

Rosario Brunetto, Zélia Dionnet, Alice Aléon-Toppani, Donia Baklouti, Ferenc Borondics, Zahia Djouadi, Andrew King, Tomoki Nakamura, Stefano Rubino, Christophe Sandt, David Troadec, Akira Tsuchiyama

We report a combined IR and X micro-tomography analysis of five particles from asteroid Itokawa and a few selected fragments of several carbonaceous chondrites. These techniques are an efficient first-step in a multi-technique analytical sequence to be applied on small Solar System bodies samples,...

EPSC-DPS Joint Meeting, 2019, Geneva, Switzerland. ⟨hal-03090422⟩

Article dans une revue

Synthesis of T-Nb2O5 thin-films deposited by atomic layer deposition for miniaturized electrochemical energy storage devices

Saliha Ouendi, Cassandra Arico, Florent Blanchard, Jean-Louis Codron, Xavier Wallart, Pierre-Louis Taberna, Pascal Roussel, Laurent Clavier, Patrice Simon, Christophe Lethien

Atomic Layer Deposition has been used to grow 30 to 90 nm-thick amorphous Nb2O5 films onto Pt current collectors deposited on Si wafer. While T-Nb2O5 polymorph is obtained by further annealing at 750 °C, the...

Energy Storage Materials, 2019, 16, pp.581-588. ⟨10.1016/j.ensm.2018.08.022⟩. ⟨hal-02135683⟩

Article dans une revue

Tunneling Atomic Layer-Deposited Aluminum Oxide: a Correlated Structural/ Electrical Performance Study for the Surface Passivation of Silicon Junctions

Kangping Liu, Odile Cristini-Robbe, Omar Ibrahim Elmi, Shuang Long Wang, Bin Wei, Ing-Song Yu, Xavier Portier, Fabrice Gourbilleau, Didier Stiévenard, Tao Xu

Passivation is a key process for the optimization of silicon p-n junctions. Among the different technologies used to passivate the surface and contact interfaces, alumina is widely used. One key parameter is the thickness of the passivation layer that is commonly deposited using atomic layer...

Nanoscale Research Letters, 2019, ⟨10.1186/s11671-019-3160-2⟩. ⟨hal-02406192⟩