Publicaciones

Affichage de 4391 à 4400 sur 16054

ART

Thermal Stability of Oleate‐Stabilized Gd2O2S Nanoplates in Inert and Oxidizing Atmospheres

Clément Larquet, D. Hourlier, Anh-Minh Nguyen, Almudena Torres-Pardo, Andrea Gauzzi, Clément Sanchez, Sophie Carenco

Capping ligands play an important role in the chemistry of nanoparticles synthesized with organic surfactants. This is relevant to a number of device applications where heating may cause major modifications of crystalline nanoparticles including amorphization, surface rearrangements or sintering....

ChemNanoMat, 2019, 5 (4), pp.539-546. ⟨10.1002/cnma.201800578⟩. ⟨hal-02017819⟩

ART

Polarization-dependent and Valley-protected Lamb Waves in Asymmetric Pillared Phononic Crystals

Wei Wang, Bernard Bonello, Bahram Djafari-Rouhani, Yan Pennec

We present the realization of the topological valley-protected zero-order antisymmetric (A 0) or symmetric (S 0) and zero-order shear-horizontal (SH 0) Lamb waves at different domain walls based on topologically distinct asymmetric double-sided pillared phononic crystals. The elastic periodic...

Journal of Physics D: Applied Physics, 2019, 52 (50), pp.505302. ⟨10.1088/1361-6463/ab43f9⟩. ⟨hal-02302115⟩

ART

Ferroelectric multiple-valued logic units

Igor A. Luk'Yanchuk, Elena Zaitseva, Vitaly Levashenko, Miroslav Kvassay, Svitlana Kondovych, Yuri Tikhonov, Laurent Baudry, Anna Razumnaya

Employing many-valued logic (MVL) data processing allows to dramatically increase the performance of computing circuits. Here we propose to employ ferroelectrics for the material implementation of MVL units basing on their ability to pin the polarization as a sequence of multi-stable states. Two...

Ferroelectrics, 2019, 543 (1), pp.213-221. ⟨10.1080/00150193.2019.1592436⟩. ⟨hal-03142271⟩

COMM

Impact of Measurement Methods over the Characterization of Transient Electromagnetic (EM) Signals above 2 GHz in a Railway Environment

Grecia Romero, Virginie Deniau, Eric Pierre Simon

In order to offer on-board Internet access on trains a Wi-Fi and LTE connection are required. These communicationsystems have to take into account electromagnetic (EM) interferences present in the railway environment in the 2 GHz frequency band since this is a frequency band in which LTE and Wi-Fi...

URSI AP-RASC 2019, Asia Pacific Radio Science Conference, Mar 2019, New Delhi, India. 4p. ⟨hal-02315713⟩

COUV

Chapter 6 - One-dimensional magnonic crystals

L. Dobrzynski, Abdellatif Akjouj, Housni Al-Wahsh, Bahram Djafari-Rouhani

This chapter presents examples of bulk and surface magnons of one-dimensional magnonic crystals, called also superlattices. The such man-made crystals considered here are grown out of semiinfinite stacks of two and also three different ferromagnetic slabs. Each slab is modeled by a simple cubic...

Magnonics: interface transmission tutorial book series, Elsevier, pp.221-232, 2019, ISBN 978-0-12-813366-8 ; e-ISBN 978-0-12-813367-5. ⟨10.1016/B978-0-12-813366-8.00006-6⟩. ⟨hal-03356775⟩

ART

Massless Dirac fermions in III-V semiconductor quantum wells

Sergey S. Krishtopenko, W. Desrat, K. Spirin, C. Consejo, S. Ruffenach, F. Gonzalez-Posada, Benoit Jouault, W. Knap, K. Maremyanin, V. Gavrilenko, G. Boissier, J. Torres, M. Zaknoune, E. Tournié, F. Teppe

We report on the clear evidence of massless Dirac fermions in two-dimensional system based on III-V semiconductors. Using a gated Hall bar made on a three-layer InAs/GaSb/InAs quantum well, we restore the Landau level fan chart by magnetotransport and unequivocally demonstrate a gapless state in...

Physical Review B, 2019, 99 (12), pp.121405. ⟨10.1103/PhysRevB.99.121405⟩. ⟨hal-02072785⟩

COUV

Chapter 3 - Magnon mono-mode circuits: serial loop structures

Housni Al-Wahsh, Abdellatif Akjouj, L. Dobrzynski, Bahram Djafari-Rouhani

In this chapter and in the frame of long-wavelength Heisenberg model, simple magnonic mono-mode circuits are designed to obtain transmission stop (pass) bands where the propagation of spin waves is forbidden (allowed). These simple devices are composed of infinite one-dimensional mono-mode...

Magnonics: interface transmission tutorial book series, Elsevier, pp.111-141, 2019, ISBN 978-0-12-813366-8 ; e-ISBN 978-0-12-813367-5. ⟨10.1016/B978-0-12-813366-8.00003-0⟩. ⟨hal-03356755⟩

COUV

Chapter 5 - Surface, interface, and confined slab magnons

L. Dobrzynski, Abdellatif Akjouj, Housni Al-Wahsh, Bahram Djafari-Rouhani

This chapter presents simple examples of surface, interface, and confined slab magnons. It addresses also magnetic surface reconstructions due to soft surface magnons. The influence of surface-pinning fields on the spin contribution to the thermodynamic properties of a ferromagnet is also presented...

Magnonics: interface transmission tutorial book series, Elsevier, pp.185-220, 2019, ISBN 978-0-12-813366-8 ; e-ISBN 978-0-12-813367-5. ⟨10.1016/B978-0-12-813366-8.00005-4⟩. ⟨hal-03356772⟩

ART

The Influence of Microstructure on the Passive Layer Chemistry and Corrosion Resistance for Some Titanium-Based Alloys

Nader El-Bagoury, Sameh Ahmed, Ola Ahmed Abu Ali, Shimaa El-Hadad, Ahmed Fallatah, G. Mersal, Mohamed Ibrahim, Joanna Wysocka, Jacek Ryl, Rabah Boukherroub, Mohammed A. Amin

The effect of microstructure and chemistry on the kinetics of passive layer growth and passivity breakdown of some Ti-based alloys, namely Ti-6Al-4V, Ti-6Al-7Nb and TC21 alloys, was studied. The rate of pitting corrosion was evaluated using cyclic polarization measurements. Chronoamperometry was...

Materials, 2019, 12 (8), pp.1233. ⟨10.3390/ma12081233⟩. ⟨hal-02373220⟩

ART

A multi-band body-worn distributed exposure meter for personal radio-frequency dosimetry in diffuse indoor environments

Reza Aminzadeh, Arno Thielens, Davy Gaillot, M. Lienard, Lamine Kone, Sam Agneessens, Patrick van Torre, Matthias van Den Bossche, Leen Verloock, Stefan Dongus, Marloes Eeftens, Anke Huss, Roel Vermeulen, René de Seze, Elisabeth Cardis, Hendrik Rogier, Martin Roosli, Luc Martens, Wout Joseph

A multi-band body-worn distributed exposure meter (BWDM) is designed and calibrated for diffuse fields in a reverberation chamber (RC) for personal exposure assessment in indoor environments. The BWDM uses 22 nodes distributed over the torso and measures the incident power density (Sinc) on body...

IEEE Sensors Journal, 2019, 19 (16), pp.6927-6937. ⟨10.1109/JSEN.2019.2913309⟩. ⟨hal-03136449⟩