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Affichage de 3731 à 3740 sur 16549

Article dans une revue

Magneto-mechanical micro-valve for active flow control

Romain Viard, Abdelkrim Talbi, Cécile Ghouila-Houri, Azeddine Kourta, Alain Merlen, Philippe Pernod

This paper presents and discusses the development of a normally-off magneto-mechanical airflow microvalve designed for active aerodynamic flow control application. The architecture of the microvalve is composed of a highly flexible mechanical resonator, a miniature coil enabling the magnetic…

Sensors and Actuators A: Physical , 2020, 316, pp.112387. ⟨10.1016/j.sna.2020.112387⟩. ⟨hal-03103973⟩

Article dans une revue

Spatial waveform analysis of ultrasonically excited capillary waves for measurements of interfacial tension coefficient in microgravity

Leonid Krutyansky, Farzam Zoueshtiagh, Philippe Pernod

A simplified method for measurements of low interfacial tension coefficient which is applicable for binary mixtures is proposed. The technique is based on generating progressive capillary waves at a liquid interface by radiation pressure of a short ultrasound pulse in microgravity condition. The…

Microgravity Science and Technology, 2020, 32 (6), pp.1087-1094. ⟨10.1007/s12217-020-09833-9⟩. ⟨hal-03277851⟩

Communication dans un congrès

Subjective and objective quality assessment of the softcast video transmission scheme

Anthony Trioux, Giuseppe Valenzise, Marco Cagnazzo, Michel Kieffer, François-Xavier Coudoux, Patrick Corlay, M Gharbi

SoftCast-based linear video coding and transmission (LVCT) schemes have been proposed as a promising alternative to traditional video coding and transmission schemes in wireless environments. Currently, the performance of LVCT schemes is evaluated by means of traditional objective scores such as…

International Conference on Visual Communications and Image Processing (VCIP 2020), Dec 2020, Macau, China. ⟨10.1109/vcip49819.2020.9301778⟩. ⟨hal-02997050⟩

Article dans une revue

Effect of attached resonators on magnon propagation in dipole-coupled nanostructured waveguide

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

We report a theoretical study on the effect of the exchange coupling on magnon propagation in a waveguide, composed of a dipole-coupled nanometric magnetic cluster chain and a few additional clusters near the chain. We show that an appropriate choice of the exchange coupling constant J or the…

Acta Physica Polonica A, 2020, 138 (6), pp.809-818. ⟨10.12693/APhysPolA.138.809⟩. ⟨hal-03124301⟩

Article dans une revue

Lithium-doped two-dimensional perovskite scintillator for wide-range radiation detection

Aozhen Xie, Chathuranga Hettiarachchi, Francesco Maddalena, Marcin Witkowski, Michal Makowski, Winicjusz Drozdowski, Arramel Arramel, Andrew Wee, Stuart Victor Springham, Phan Quoc Vuong, Hong Joo Kim, Christophe Dujardin, Philippe Coquet, Muhammad Danang Birowosuto, Cuong Dang

Two-dimensional lead halide perovskites have demonstrated their potential as high-performance scintillators for X- and gamma-ray detection, while also being low-cost. Here we adopt lithium chemical doping in two-dimensional phenethylammonium lead bromide (PEA)<sub>2</sub>PbBr<sub>…

Communications Materials, 2020, 1 (34), ⟨10.1038/s43246-020-0038-x⟩. ⟨hal-03142402⟩

Article dans une revue

Derivation of magnetic inertial effects from the classical mechanics of a circular current loop

Stefano Giordano, Pierre-Michel Déjardin

The dynamical equation of a single magnetic moment constituted by a rigid circular current loop is derived from the mechanical Lagrange equations of motion, introducing the Lorentz force and the damping process, described by a well defined dissipative mechanism. It is demonstrated that magnetic…

Physical Review B, 2020, 102 (21), ⟨10.1103/PhysRevB.102.214406⟩. ⟨hal-03278509⟩

Article dans une revue

Photoinduced spin dynamics in a uniaxial intermetallic heterostructure $$\hbox {TbCo}_2/\hbox {FeCo}$$

Sergei Ovcharenko, Mikhail Gaponov, Alexey Klimov, Nicolas Tiercelin, Philippe Pernod, Elena Mishina, Alexandr Sigov, Vladimir Preobrazhensky

intermetallic heterostructures of rare-earth and transition metals exhibit physical properties prospective for various applications. these structures combine giant magnetostriction, controllable magnetic anisotropy, magneto-optical activity and allow spin reorientation transitions (SRt) induced by…

Scientific Reports, 2020, 10 (1), ⟨10.1038/s41598-020-72740-x⟩. ⟨hal-02961404⟩

Article dans une revue

Three-dimensional trapping and assembly of small particles with synchronized spherical acoustical vortices

Zhixiong Gong, Michael Baudoin

Three-dimensional harmless contactless manipulation and assembly of micro-objects and microorganisms would open other horizons in microrobotics and microbiology, e.g., for microsystems assembly or tissue engineering. In this paper, we theoretically show that small particles compared to the…

Physical Review Applied, 2020, 14 (6), pp.064002. ⟨10.1103/PhysRevApplied.14.064002⟩. ⟨hal-03329991⟩

Article dans une revue

A simple physical mixing method for MnO2/MnO nanocomposites with superior Zn2+ storage performance

Xiao-Bei Zang, Ling-Tong Li, Zhi-Xin Sun, Rabah Boukherroub, Jia-Xin Meng, Kun-Peng Cai, Qing-Guo Shao, Ning Cao

MnO2/MnO cathode material with superior Zn2+ storage performance is prepared through a simple physical mixing method. The MnO2/MnO nanocomposite with a mixed mass ratio of 12:1 exhibits the highest specific capacity (364.2 mA.h/g at 0.2C), good cycle performance (170.4 mA.h/g after 100 cycles) and…

Transactions of Nonferrous Metals Society of China, 2020, 30 (12), pp.3347-3355. ⟨10.1016/S1003-6326(20)65466-8⟩. ⟨hal-03321543⟩

Article dans une revue

Bound in continuum states and induced transparency in mesoscopic demultiplexer with two outputs

Z. Labdouti, T. Mrabti, A. Mouadili, E. H. El Boudouti, F. Fethi, Bahram Djafari-Rouhani

We investigate the electronic transport in a simple mesoscopic cross structure made of two wires (stubs) grafted at the same point along a quantum waveguide. We show that the structure may exhibit important phenomena such as bound in continuum (BIC) states. These states are transformed into…

Chinese Physics B, 2020, 29 (12), pp.127301. ⟨10.1088/1674-1056/abad23⟩. ⟨hal-03321546⟩