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Affichage de 2631 à 2640 sur 16094

Article dans une revue

Comparison of Brillouin Light Scattering and Density of States in a Supported Layer: Analytical and Experimental Study

Ossama El Abouti, John Cuffe, El Houssaine El Boudouti, Clivia Sotomayor Torres, Emigdio Chavez-Angel, Bahram Djafari-Rouhani, Francesc Alzina

We provide a detailed analytical calculation of the Brillouin light scattering (BLS) intensity of a layer on a substrate, taking into account both photoelastic and moving boundary (ripple effect) mechanisms, and give a comparison between BLS intensity and density of states (DOS) to determine the…

Crystals, 2022, 12 (9), pp.1212. ⟨10.3390/cryst12091212⟩. ⟨hal-03769721⟩

Article dans une revue

Redox-labelled electrochemical aptasensors with nanosupported cancer cells

S. Li, Yannick Coffinier, C. Lagadec, Fabrizio Cleri, K. Nishiguchi, A. Fujiwara, T. Fujii, S.-H. Kim, Nicolas Clement

The transfer of redox-labelled bioelectrochemical sensors from proteins to cells is not straightforward because of the cell downward force issue on the surface of the sensors. In this paper, 20-nm-thick nanopillars are introduced to overcome this issue, in a well-controlled manner. We show on both…

Biosensors and Bioelectronics, 2022, 216, 114643, 7 p. ⟨10.1016/j.bios.2022.114643⟩. ⟨hal-03768941⟩

Article dans une revue

Elucidating the oscillation instability of sessile drops triggered by surface acoustic waves

Nicolas Chastrette, Michael Baudoin, Philippe Brunet, Laurent Royon, Régis Wunenburger

The oscillation instability of sessile drops is ubiquitous in surface acoustic wave (SAW) -powered digital microfluidics. Yet the physics underlying these phenomena has not been elucidated owing to the complex interplay between hydrodynamics, acoustics, and capillarity. We decipher the instability…

Physical Review Fluids, 2022, 7 (12), pp.124201. ⟨10.1103/PhysRevFluids.7.124201⟩. ⟨hal-03885908v2⟩

Article dans une revue

Synthesis and characterization of palladium nanoparticles immobilized on graphene oxide functionalized with triethylenetetramine or 2,6-diaminopyridine and application for the Suzuki cross-coupling reaction

Maryam Mirza-Aghayan, Marzieh Mohammadi, Rabah Boukherroub

Graphene oxide (GO) was functionalized with two organic ligands, triethylenetetramine (TETA) or 2,6-diaminopyridine (DAP), followed by palladium nanoparticles (Pd NPs) for the synthesis of Pd NPs/GO-TETA and Pd NPs/GO-DAP nanocomposites, respectively. The two heterogeneous nanocomposites were fully…

Journal of Organometallic Chemistry, 2022, 957, pp.122160. ⟨10.1016/j.jorganchem.2021.122160⟩. ⟨hal-03538877⟩

Article dans une revue

Millimeter-Wave Phased Arrays and Over-the-Air Characterization for 5G and Beyond

Mattia Maggi, Syrine Hidri, Loic Marnat, Mauro Ettorre, Gerardo Orozco, Marc Margalef-Rovira, Christophe Gaquière, Kamel Haddadi

Millimeter-wave (mm-wave) technology is a viable candidate to address the growing data traffic in 5G wireless communication and beyond. However, challenges related to free-space propagation loss, atmospheric absorption, scattering, and nonline-of-sight propagation must be addressed to benefit from…

IEEE Microwave Magazine, 2022, 23 (5), pp.67-83. ⟨10.1109/MMM.2022.3148328⟩. ⟨hal-03635815⟩

Article dans une revue

Photonics-Based Near-Field Measurement and Far-Field Characterization for 300-GHz Band Antenna Testing

Yusuke Tanaka, Guillaume Ducournau, Cybelle Belem-Goncalves, Frederic Gianesello, Cyril Luxey, Issei Watanabe, Akihiko Hirata, Norihiko Sekine, Akifumi Kasamatsu, Shintaro Hisatake

In this study, photonics-based near-field measurement and far-field characterization in a 300-GHz band are demonstrated using an electrooptic (EO) sensor with planar scanning. The field to be measured is up-converted to the optical domain (1550 nm) at the EO sensor and delivered to the measurement…

IEEE Open Journal of Antennas and Propagation, 2022, 3, pp.24-31. ⟨10.1109/OJAP.2021.3133470⟩. ⟨hal-03694327⟩

Article dans une revue

Equal-efficiency diffraction of unpolarized wideband light with acousto-optic filters

Samuel Dupont, Justine Champagne, Jean-Claude Kastelik

We present the diffraction of unpolarized light over a broad wavelength range using paratellurite Acousto-Optic Tuneable Filters. The diffraction of unpolarized light usually relies on a specific operating point that is sensitive to the wavelength and angle of incidence, resulting in an operating…

Journal of Modern Optics, 2022, 69 (13), 10 p. ⟨10.1080/09500340.2022.2085336⟩. ⟨hal-03699158⟩

Article dans une revue

Temperature and Gate-Length Dependence of Subthreshold RF Detection in GaN HEMTs

Gaudencio Paz-Martínez, Ignacio Íñiguez-De-La-Torre, Héctor Sánchez-Martín, José Antonio Novoa-López, Virginie Hoel, Yvon Cordier, Javier Mateos, Tomás González

The responsivity of AlGaN/GaN high-electron mobility transistors (HEMTs) when operating as zero-bias RF detectors in the subthreshold regime exhibits different behaviors depending on the operating temperature and gate length of the transistors. We have characterized in temperature (8–400 K) the…

Sensors, 2022, 22 (4), pp.1515. ⟨10.3390/s22041515⟩. ⟨hal-03582713⟩

Communication dans un congrès

THz photonics-based transmitter using multicore fiber combined with UTC-PD array for high data transmission in 300 GHz band

Bewindin Alfred Sawadogo, Aritrio Bandyopadhyay, Malek Zegaoui, Mohammed Zaknoune, Pascal Szriftgiser, Karen Baudelle, Monika Cieslikiewicz-Bouet, Géraud Bouwmans, Davy Gaillot, Esben Ravn Andresen, Guillaume Ducournau, Laurent Bigot

This work aims at illuminating an UTC-PD array with a multicore fiber towards multiple THz carrier generation. This photonics-based transmitter is expected to increase either the data rate via spatial multiplexing on different carriers or the emitted THz-power and therefore the transmission reach…

SPIE Photonics Europe 2022, Terahertz Photonics II, Apr 2022, Strasbourg, France. 18, 5 p., ⟨10.1117/12.2621614⟩. ⟨hal-03741396⟩

Article dans une revue

Thermal control of nucleation and propagation transition stresses in discrete lattices with non-local interactions and non-convex energy

Andrea Cannizzo, Luca Bellino, Giuseppe Florio, Giuseppe Puglisi, Stefano Giordano

Non-local and non-convex energies represent fundamental interacting effects regulating the complex behavior of many systems in biophysics and materials science. We study one-dimensional, prototypical schemes able to represent the behavior of several biomacromolecules and the phase transformation…

The European Physical Journal Plus, 2022, 137 (5), pp.569. ⟨10.1140/epjp/s13360-022-02790-9⟩. ⟨hal-03673427⟩