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Affichage de 1561 à 1570 sur 16387

Communication dans un congrès

Adapting terahertz spintronic emitters towards maximum performance

Pierre Koleják, Geoffrey Lezier, Lukáš Halagačka, Baptiste Mathmann, Daniel Vala, Zuzana Gelnárová, Yannick Dusch, Jean-François Lampin, Nicolas Tiercelin, Kamil Postava, Mathias Vanwolleghem

The boom in terahertz technologies of the last few decades is now not limited to the use of electric charge, but also fully exploits spin. Revolutionary spintronic terahertz emitters (STEs) offer versatile usage under a wide range of visible and infrared excitation wavelengths, arbitrary reflection...

2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Sep 2023, Montreal, Canada. pp.1-2, ⟨10.1109/IRMMW-THz57677.2023.10299199⟩. ⟨hal-04277716⟩

Communication dans un congrès

From Noise analysis to Error Bars on Refractive Index In THz-TDS

Noureddin Osseiran, Jeyan Bichon, Aditya Raj, Théo Hannotte, Sophie Eliet, Romain Peretti

We present a new methodology for computing error bars in THz-TDS experiments and distribute open source software for this purpose. Pursuing our efforts in noise analysis and data processing of THz-TDS experiments, we followed a standard approach to derive the error bars from the simplest quantities...

48th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Sep 2023, Montreal, Canada. pp.1-2, ⟨10.1109/IRMMW-THz57677.2023.10299169⟩. ⟨hal-04254689⟩

Communication dans un congrès

Spintronic inverse spin hall photomixing beyond 1THz

Pierre Kolejak, Geoffrey Lezier, Guillaume Ducournau, Jean-Francois Lampin, Nicolas Tiercelin, Mathias Vanwolleghem

We have demonstrated experimentally how ultrabroadband inverse spin Hall emitters present an unprecedented new scheme for room temperature THz CW and frequency comb generation. Building on previous proof-of-principle demonstrations, we demonstrate here by improved experimental developments how this...

2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Sep 2023, Montreal, Canada. pp.1-2, ⟨10.1109/IRMMW-THz57677.2023.10299118⟩. ⟨hal-04277866⟩

Communication dans un congrès

200 Gbit/s terahertz tunneling demultiplexer in 300 GHz band

Daniel Headland, Withawat. Withayachumnankul, Masayuki. Fujita, Tadao Nagatsuma, Pascal Szriftgiser, Guillaume Ducournau

We showcase here the experimental demonstration of demultiplexing terahertz channels with up to 200 Gbit/s aggregated data-rate, using 4 carrier frequencies. The demonstration is carried out in the 300 GHz band. Best error vector magnitude obtained values are in the range 6-9%, with 50 Gbit/s per...

2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Sep 2023, Montreal, Canada. pp.1-2, ⟨10.1109/IRMMW-THz57677.2023.10299212⟩. ⟨hal-04277435⟩

Communication dans un congrès

Acousto-Optical Tunable Filter design for efficient diffraction of unpolarised light

Samuel Dupont, Jean-Claude Kastelik, J. Vanhamel, E. Dekemper

Diffraction of optical waves by an acoustic grating is a well-known phenomenon that enables the design of versatile devices useful in photonic systems. For example, acousto-optic tunable filters (AOTFs) can be dynamically tuned by radio-frequency signals. Among possible material choice,...

10th Convention of the European Acoustics Association Forum Acusticum 2023, Sep 2023, Turin, Italy. pp.4935-4938, ⟨10.61782/fa.2023.0505⟩. ⟨hal-04462396⟩

Communication dans un congrès

Design of a Radio Frequency Compensation System, using the Electrical Characterisation of a Multi-Transducer Acousto-Optical Tunable Filter

J. Vanhamel, Samuel Dupont, Jean-Claude Kastelik, E. Dekemper

Acousto-Optical Tunable Filters (AOTFs) make use of the interaction between sound and light. To generate an ultrasound diffraction grating, a Radio-Frequency (RF) signal is applied to a piezoelectric transducer. The optical pass band can be controlled by adapting the properties of this transducer...

10th Convention of the European Acoustics Association Forum Acusticum 2023, Sep 2023, Turin, Italy. pp.6355-6360, ⟨10.61782/fa.2023.0379⟩. ⟨hal-04462347⟩

Article dans une revue

Functional Role of Metal Center and Doping on Tuning the Electrocatalytic Oxygen Evolution Activity of BioMIL-1: Experimental and Theoretical Approaches

Mandana Amiri, Abolfazl Bezaatpour, Mina Ghiasi, Heinrich Vocke, Sabine Szunerits, Ali Khodayari, Rabah Boukherroub, Michael Wark

To achieve high-efficiency energy conversion and storage technologies, the design and fabrication of high-performance electrocatalysts and an understanding of their catalytic mechanism are critical. In this study, the effect of different metal centers (Co, Ni, Fe, and Cu) on the morphology,...

ACS Applied Energy Materials, 2023, 6 (17), pp.8749-8758. ⟨10.1021/acsaem.3c01214⟩. ⟨hal-04200866⟩

Communication dans un congrès

CHARACTERIZATION OF ADHESION BY RAYLEIGH MODES GENERATED AND DETECTED BY LASERS

Mustapha Baher, Meriem Chrifi Alaoui, Frédéric Jenot, Mohammadi Ouaftouh, Marc Duquennoy

Adhesion is the ability of dissimilar particles to clutch together and is used to describe the contact between two interfaces. It is often considered as the predominant factor for coating reliability in thin-film technologies. Many techniques have been established to estimate the coating-substrate...

Forum Acousticum, Sep 2023, Turin (IT), Italy. ⟨hal-04342707⟩

Communication dans un congrès

Improving off-state capacitance of SOI-CMOS RF switches: how good are air microcavities?

Daniel Gheysens, Alain Fleury, Stéphane Monfray, Frédéric Gianesello, Philippe Cathelin, Jean-François Robillard, David Troadec, Emmanuel Dubois

This paper investigates the reduction of the off-state capacitance (COFF) of SOI-CMOS RF switches induced by the introduction of air microcavity in the back-end interconnection network. A detailed methodology combining electromagnetic and semiconductor transport simulations is used to separately...

IEEE 53rd European Solid-State Device Research Conference, ESSDERC, Sep 2023, Lisbon, Portugal. pp.109-112, ⟨10.1109/ESSDERC59256.2023.10268524⟩. ⟨hal-04226645⟩

Communication dans un congrès

Passive sensor network resycnhronization applied for SHM

O. Bouchakour, L. Chehami, E. Moulin

Recent research works in passive Structural Health Monitoring (SHM) have been able to take advantage of ambient noise by cross-correlating raw data recorded by sensor array. For that, the acquired signals must be synchronized with respect to each other. In other words, it is essential to set up a...

Forum Acusticum 2023, Sep 2023, Turin, Italy. pp.3453-3456, ⟨10.61782/fa.2023.0733⟩. ⟨hal-04141086⟩