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Affichage de 3831 à 3840 sur 16179

  • Article dans une revue

L'infini au cours des siècles

Stefano Giordano, Manon Benedito

The fascinating history of the concept of infinity is indissolubly associated with the development of religions, philosophies, mathematics and natural sciences. At the time of the first Greek philosophers, the infinity, or áperion, was a negative concept to be avoided in all rigorous statements.…

K. Revue trans-européenne de philosophie et arts, 2020. ⟨hal-02947970⟩

  • Article dans une revue

Active control of the transmission of Lamb waves through an elastic metamaterial

W. Wang, B. Bonello, Bahram Djafari-Rouhani, X. Fang, Yan Pennec, J. Zhao, Y. Jin

We have numerically investigated the transmission of an antisymmetric Lamb wave through a line of silicon pillars erected onto a homogeneous silicon plate when the frequency is tuned to a resonant frequency of the pillars. For either a bending mode or a compressional mode, the resonators emit in…

Journal of Applied Physics, 2020, 128 (6), pp.065107. ⟨10.1063/5.0017526⟩. ⟨hal-02924674⟩

  • Communication dans un congrès

W Band Carbon Nanotubes Interconnects Compatible with CMOS Technology

Philippe Roux-Levy, Joseph de Saxce, Chun Fei Siah, Jianxiong Wang, Beng Kang Tay, Philippe Coquet, Dominique Baillargeat

The following topics are dealt with: III-V semiconductors; wide band gap semiconductors; gallium compounds; CMOS integrated circuits; 5G mobile communication; band-pass filters; antenna phased arrays; Ge-Si alloys; BiCMOS integrated circuits; and array signal processing.

2020 IEEE/MTT-S International Microwave Symposium (IMS), Aug 2020, Los Angeles, United States. pp.1047-1050, ⟨10.1109/IMS30576.2020.9223919⟩. ⟨hal-03140962⟩

  • Article dans une revue

Surface Functionalization with Polyethylene Glycol and Polyethyleneimine Improves the Performance of Graphene-Based Materials for Safe and Efficient Intracellular Delivery by Laser-Induced Photoporation

Jing Liu, Chengnan Li, Toon Brans, Aranit Harizaj, Shana van de Steene, Thomas de Beer, Stefaan de Smedt, Sabine Szunerits, Rabah Boukherroub, Ranhua Xiong, Kevin Braeckmans

Nanoparticle mediated laser-induced photoporation is a physical cell membrane disruption approach to directly deliver extrinsic molecules into living cells, which is particularly promising in applications for both adherent and suspension cells. In this work, we explored surface modifications of…

International Journal of Molecular Sciences, 2020, 21 (4), pp.1540. ⟨10.3390/ijms21041540⟩. ⟨hal-03090057⟩

  • Communication dans un congrès

Reference-free damage localization based on pump-probe measurements

Marina Terzi, Lynda Chehami, Emmanuel Moulin, Nikolay Smagin, Vladislav Aleshin

Nondestructive testing is often based on comparison between experimental data measured on damaged and intact samples. However, properties of intact samples can change with time, temperature or other external factors. An alternative approach discussed here solely uses data obtained on a damaged…

e-Forum Acusticum, Dec 2020, Lyon, France. pp.67-72, ⟨10.48465/fa.2020.0754⟩. ⟨hal-03240303⟩

  • Article dans une revue

Nanomechanical modulation cavities of localized surface plasmon resonance with elastic whispering-gallery modes

Z. Oumekloul, M. Moutaouekkil, Gaëtan Lévêque, Abdelkrim Talbi, A. Mir, Abdellatif Akjouj

he dispersion of mechanical vibration limits nano-optomechanical modulation. In this work, we propose an optomechanical modulation exploiting elastic local resonances, also called whispering-gallery modes (WGMs). We find that our structure supports two quadripolar and two hexapolar elastic WGMs,…

Journal of Applied Physics, 2020, 127 (2), pp.023105. ⟨10.1063/1.5111819⟩. ⟨hal-03141821⟩

  • Article dans une revue

Proposal for an integrated silicon-photonics terahertz gas detector using photoacoustics

Mattias Verstuyft, Elias Akiki, Benjamin Walter, Marc Faucher, Jean-Francois Lampin, Mathias Vanwolleghem, Bart Kuyken

A design and multiphysical model is presented for an on-chip gas sensor that transduces terahertz gas absorption through sound generation into a mechanical motion that can be read out externally. The signal is triply enhanced by designing a structure that functions simultaneously as an optical, an…

Optics Express, 2020, 28 (15), pp.22424. ⟨10.1364/OE.397272⟩. ⟨hal-03065114⟩

  • Communication dans un congrès

High speed mid-IR quantum cascade detector at room temperature

G. Quinchard, C. Mismer, V. Trinite, A. Evirgen, A. Larrue, M. Hakl, Jean-Francois Lampin, Emilien Peytavit, S Barbieri, A. Delga

We present a high-speed antenna enhanced Quantum Cascade Detector at 10.3μm. By using a coherent detection scheme and thin InGaAs/AlInAs heterostructure embedded in metal-metal patch antenna, we demonstrate a heterodyne response up to 67 GHz at room temperature.

2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Nov 2020, Buffalo, NY, United States. pp.1-1, ⟨10.1109/IRMMW-THz46771.2020.9370489⟩. ⟨hal-03191464⟩

  • Communication dans un congrès

Low-Temperature-Grown Gallium Arsenide Photoconductors with Photoresponse Reaching 25 mA/W under 1550nm Cw Excitation

Charbel Tannoury, Maximilien Billet, Christophe Coinon, Jean-Francois Lampin, Emilien Peytavit

We show in this communication that photoconductors based on GaAs grown at low temperature can exhibit photoresponses as high as 25 mA/W under continuous-wave 1550-nm-wavelength illumination. It is achieved by using an optical Fabry-Pérot cavity in order to improve the external quantum efficiency…

2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Nov 2020, Buffalo, NY, USA, United States. pp.1-1, ⟨10.1109/IRMMW-THz46771.2020.9370757⟩. ⟨hal-03191465⟩

  • Article dans une revue

Polymer photonic crystal membrane for thermo-regulating textile

Salim Assaf, Mohamed Boutghatin, Yan Pennec, V. Thomy, Alexander Korovin, A. Treizebre, Michèle Carette, Abdellatif Akjouj, Bahram Djafari-Rouhani

We study numerically the absorption and scattering properties of a polymer photonic membrane to thermoregulate the human body microclimate which corresponds to the area between the skin and a textile. We first show that the structuration of the absorbing photonic membrane with air holes leads to a…

Scientific Reports, 2020, 10 (1), pp.9855. ⟨10.1038/s41598-020-66731-1⟩. ⟨hal-03142220⟩