Publications

• Communication dans un congrès

Terahertz near-field imaging using batch-fabricated cantilevers with 70 μm long tips

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

Batch-fabricated atomic force microscopy cantilevers with tip longer than 70 μm are reported. They are designed to increase terahertz focusing in scattering optical nearfield imaging. Terahertz imaging of graphene samples with sub-100 nm features is presented.

2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Sep 2019, Paris, France. pp.1-2, ⟨10.1109/IRMMW-THz.2019.8874242⟩. ⟨hal-02398422⟩

• Article dans une revue

Multilayer modeling of thermoacoustic sound generation for thermophone analysis and design

Pierre Guiraud, Stefano Giordano, Olivier Bou Matar, Philippe Pernod, Raphael Lardat

A general model for thermoacoustic sound generation, based on the classical conservation laws of mass, momentum and energy, is presented and adopted to analyze different thermophone structures. This model is able to describe an arbitrary multilayered (or laminated) system composed of both solid and…

Journal of Sound and Vibration, 2019, 455, pp.275-298. ⟨10.1016/j.jsv.2019.05.001⟩. ⟨hal-02337918⟩

• Poster de conférence

Tunable filter design for IR hyperspectral imaging

Justine Champagne, Samuel Dupont, Joseph Gazalet, Jean-Claude Kastelik

The use of wide-angle Acousto-Optic Tunable Filter (AOTF) for hyperspectral imaging is considered: the diffraction efficiency is calculated around a usual diffraction plane for two degrees of freedom (azimuthal and transverse angle). The efficiency evolution is also examined over a wide wavelength…

44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Sep 2019, Paris, France. IEEE, pp.1-2, ⟨10.1109/IRMMW-THz.2019.8874428⟩. ⟨hal-03549446⟩

• Communication dans un congrès

Combined UTC-PD integrated on-chip THz near field microscopy with coupled planar Goubau lines

Tahsin Akalin, Abdallah Chahadih, Abbas Ghaddar, Ibrahim Tirer

In most of the cases for terahertz near field microscopy, a free space propagating electromagnetic wave interacts with a small tip placed above the sample. In our original approach, we use a guided way to bring the terahertz wave and to improve the interaction efficiency with the sample. The idea…

2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Sep 2019, Paris, France. pp.1-2, ⟨10.1109/IRMMW-THz.2019.8873931⟩. ⟨hal-03680774⟩

• Article dans une revue

Magnetic Interactions on Oxide Ferromagnet/Ferromagnetic Intermetallide Interface

G. Ovsyannikov, V. Demidov, T. Shaikhulov, A. Klimov, Nicolas Tiercelin, Philippe Pernod, S. Nikitov

The magnetic properties of heterostructures consisting of two films are studied. The upper layer involves rare-earth intermetallic nanostructured superlattices consisting of exchange-coupled layers (TbCo 2 /FeCo) n (TCFC), and the lower layer includes either epitaxial manganite La 0.7 Sr 0.3 MnO 3…

Physics of the Solid State, 2019, 61 (9), pp.1652-1657. ⟨10.1134/S1063783419090191⟩. ⟨hal-02318292⟩

• Communication dans un congrès

Device for broadband THz spectroscopy of 1-nL-volume samples

Sergey Mitryukovskiy, Melanie Lavancier, Flavie Braud, Theo Hannotte, Emmanuel Dubois, Jean-Francois Lampin, Romain Peretti

We report on our recent progress in the development of a device for light-matter interaction enhancement in the full terahertz range for precise spectroscopy of minor-volume samples. The efficient confinement of a broadband terahertz pulse to a few-nL-volume was achieved, opening new perspectives…

2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Sep 2019, Paris, France. paper Tu-PM2-3-6, 2 p., ⟨10.1109/IRMMW-THz.2019.8874026⟩. ⟨hal-02886495⟩

• Article dans une revue

Improvement in carrier dynamics in In_xGa_1-xN/GaN multi-quantum well for solar cell applications

Abdelkader Aissat, Jean-Pierre Vilcot

In this work, we have studied and simulated nanostructures to improve the solar cell efficiency. The idea of this study is to insert multi-quantum wells in the structure of a solar cell (MQWSC). The electric field, recombination, and the photogeneration rates of charge carriers in QWSC influence…

• Article dans une revue

Conductivity of Manganite Films under the Action of Tension Caused by the Deformation of Substrate

G. Ovsyannikov, T. Shaikhulov, V. Shakhunov, A. Klimov, V. Preobrazhenskii, Nicolas Tiercelin, Philippe Pernod

The electron transport properties of strained thin La 0.7 Ba 0.3 MnO 3 (LBMO) epitaxial films are studied. Films 40-100 nm in thickness were prepared by laser ablation at a temperature T = 700-800°C in pure oxygen atmosphere of 0.3-1 mBar. Ferroelectric crystal substrates (011)0.79PbMg 1/3 Nb 2/3 O…

Physics of the Solid State, 2019, 61 (9), pp.1665-1669. ⟨10.1134/S1063783419090208⟩. ⟨hal-02318290⟩

• Communication dans un congrès

THz links using tube amplifiers and steerable beams for indoor applications

Cybelle Belem-Goncalves, Guillaume Ducournau, Andre Sarker, Henry Giddens, C. Biurrun, C. Del-Rio Boccio, Cyril Luxey, Yang Hao, Rupa Basu, Claudio Paoloni

We present in this paper an ongoing project will is targeting the combination of several technologies to achieve high-data-rate and long-range links using a mW level source with fast modulation, waveguide coupled to drive a traveling-wave tube amplifier towards a modulated in the 210-250 GHz range…

2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Sep 2019, Paris, France. pp.1-2, ⟨10.1109/IRMMW-THz.2019.8874114⟩. ⟨hal-03555377⟩

• Article dans une revue

Chalcogenide glasses as a playground for the application of first-principles molecular dynamics to disordered materials

Guido Ori, Assil Bouzid, Évelyne Martin, Carlo Massobrio, Sébastien Le Roux, Mauro Boero

An overview of the major first-principles methods used to simulate condensed phases is presented, with special emphasis on chalcogenide glasses. The scope of this review article is to offer a survey of fundamental algorithms and techniques, accompanied by a few recent examples particularly…

Solid State Sciences, 2019, 95, pp.105925. ⟨10.1016/j.solidstatesciences.2019.06.014⟩. ⟨hal-02349474⟩