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Affichage de 621 à 630 sur 16095

  • Communication dans un congrès

Free Induction Decay signals stimulated and detected by photomixing

Francis Hindle, F. Parnet, F. Bondu, Guillaume Ducournau, Jean-Francois Lampin, Gaël Mouret, G. Loas, Emilien Peytavit

This abstract presents a coherent THz spectroscopy experiment consisting in recording the free induction decay of a collection of carbonyde sulfide (OCS) molecules when polarized coherently by a ~0.29 THz incident pulse resonant with the J=24- >23 OCS rotational line. This was accomplished...

49th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Sep 2024, Perth, Australia. pp.1-2, ⟨10.1109/IRMMW-THz60956.2024.10697581⟩. ⟨hal-04748565⟩

  • Article dans une revue

Cooperative dynamics of PARP-1 zinc-finger domains in the detection of DNA single-strand breaks

Parvathy A Sarma, Corinne Abbadie, Fabrizio Cleri

The DNA single-strand break (SSB) repair pathway is initiated by the multifunctional enzyme PARP-1, which recognizes the broken DNA ends by its two zinc-finger domains, Zn1 and Zn2. Despite a number of experiments performed with different DNA configurations and reduced fragments of PARP-1, many...

Scientific Reports, 2024, 14 (1), pp.23257. ⟨10.1038/s41598-024-73707-y⟩. ⟨hal-04725325⟩

  • Communication dans un congrès

Design and analysis of a periodic metamaterial barrier for mitigating urban-induced vibrations

Slimane Ouakka, Bart van Damme, Yan Pennec, Georges Kouroussis

Urban areas are increasingly subjected to vibrations from various sources within the urban environment. Therefore, there is an urgent necessity to find measures that can minimize their negative effects. This pa-per investigates the concept of metamaterial and analyzes the impact of its inclusion on...

53rd International Congress and Exposition on Noise Control Engineering, Internoise 2024, Aug 2024, Nantes, France. pp.9512-9518, ⟨10.3397/IN_2024_4259⟩. ⟨hal-05314274⟩

  • Communication dans un congrès

Characterisation of metamaterials for underwater acoustics using the 5-point method

Clément Larcade, Charles Croënne, Monique Pouille, Laetitia Roux, Anne-Christine Hladky

The characterization of metamaterials by measurement is essential to reveal the true efficiency of a material's reflection and transmission in water. The current 3-point method developed by L. Roux et al, J. Acoust. Soc. Am. 147, 2 (2020) 1104-1112 provides important advantages, such as...

53rd International Congress and Exposition on Noise Control Engineering, INTER-NOISE24, Aug 2024, Nantes, France. pp.2975-2983, ⟨10.3397/IN_2024_3258⟩. ⟨hal-04856684⟩

  • Communication dans un congrès

Anthropogenic noise and impact on marine species : Acoustic metamaterials as a reduction solution

Juliette Kessler, Charles Croënne, Monique Pouille, Céline Drouet, Anne-Christine Hladky-Hennion

Anthropogenic underwater noise generated by offshore maritime activities poses a significant threat to nearby ecosystems due to elevated sound levels. Efforts have to be undertaken on noise reduction solutions, depending both on the offshore activities and on the marine species. In this context,...

53rd International Congress and Exposition on Noise Control Engineering, INTER-NOISE24, Aug 2024, Nantes, France. pp.2938-2945 (8), ⟨10.3397/IN_2024_3253⟩. ⟨hal-04856674⟩

  • Communication dans un congrès

Topologically protected bound modes in non-neighboring hexagonal lattices

Vinicius Dal Poggetto, Raj Pal, Nicola Pugno, Marco Miniaci

In the last decade, the study of wave localization and guiding has gained a renewed interest thanks to the introduction of the concept of topological protection. Originally developed in the field of quantum mechanics, topological protection has successively inspired the search for its analogue in...

53rd International Congress & Exposition on Noise Control Engineering, Aug 2024, Nantes, France. pp.9609-9619, ⟨10.3397/IN_2024_4272⟩. ⟨hal-04738352⟩

  • Communication dans un congrès

Perception of audified acoustic emissions from compression of microscopic samples

Florian Duval, Clement Xu, Catherine Lavandier, Arthur Paté, Dávid Ugi, Péter Dusán Ispánovity, Szilvia Kalacska

Recording of acoustic emissions (elastic waves emitted by dislocation motion) during compression of microscopic samples is a novel emerging tool for the investigation of mechanical properties of materials. Yet the resulting signals can be so noisy and complex that they don't easily allow for...

53rd International Congress and Exposition on Noise Control Engineering, INTER-NOISE24, Internoise 2024, Aug 2024, Nantes, France. pp.28-39, ⟨10.3397/IN_2024_1468⟩. ⟨hal-04780657⟩

  • Communication dans un congrès

Hierarchical porous metamaterial for sound absorption

Svetlana Kuznetsova, Florian Allein, Samuel Deleplanque, Bertrand Dubus, Marco Miniaci

Absorption of sound is of great importance in several engineering applications, from room acoustics to engine noise reduction. Porous media are practical and commonly used to address this issue. However, their performance is limited at large wavelengths, where more material is required. Inspired by...

Inter-Noise 2024, Aug 2024, Nantes, France. pp.9582-9589, ⟨10.3397/IN_2024_4267⟩. ⟨hal-04780676⟩

  • Communication dans un congrès

Diatom frustule-inspired elastic metamaterials

Chiara Gazzola, Vinicius Fonseca Dal Poggetto, Xin Zhou, Marco Miniaci

Although a universally accepted definition of elastic metamaterials does not exist yet, the latter are often associated to man-made or artificially engineered media possessing properties typically not available in Nature. Pioneering studies have recently demonstrated that complex structural...

53rd International Congress and Exposition on Noise Control Engineering, INTER-NOISE24, Aug 2024, Nantes, France. pp.9327-9332, ⟨10.3397/IN_2024_4232⟩. ⟨hal-04856658⟩

  • Thèse

Impacts de jet : du ressaut hydraulique oscillant à la formation de spray sur surface chaude, Impact of jets : from oscillatory hydraulic spring to spray formation on hot surface

Aurélien Goerlinger

L'impact des jets sur diverses surfaces est au cœur de nombreuses problématiques, notamment en termes de refroidissement et de nettoyage de surface. Cette thèse se penche sur deux aspects différents de ce sujet pour des jets sub-millimétriques, peu étudiés dans la littérature.Dans un premier..., The impact of jets on various surfaces is at the heart of many problems, particularly in terms of cooling and surface cleaning. This thesis focuses on two different aspects of this subject for sub-millimeter jets, little studied in the literature.First, we explore the circular hydraulic jump...

Acoustique [physics.class-ph]. Université de Lille, 2024. Français. ⟨NNT : 2024ULILN030⟩. ⟨tel-04908479v2⟩