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Affichage de 5381 à 5390 sur 16276

Article dans une revue

Zipping-Depinning: Dissolution of Droplets on Micropatterned Concentric Rings

José Encarnación Escobar, Erik Dietrich, S. Arscott, Harold J. W. Zandvliet, Xuehua Zhang, Detlef Lohse

The control of the surface wettability is of great interest for technological applications as well as for the fundamental understanding of surface phenomena. In this article, we describe the dissolution behavior of droplets wetting a micropatterned surface consisting of smooth concentric circular…

Langmuir, 2018, 34 (19), pp.5396-5402. ⟨10.1021/acs.langmuir.8b00256⟩. ⟨hal-02345376⟩

Communication dans un congrès

Nano-structured top contact with low optical polarization dependence for THz generation using photodiodes

Sara Bretin, Maximilien Billet, Emilien Peytavit, Francois Vaurette, Christophe Coinon, X. Wallart, Jean-Francois Lampin, Malek Zegaoui, Guillaume Ducournau, Mohammed Zaknoune

Uni-travelling carrier photodiode (UTC-PD) with different top optical and electrical accesses are proposed towards optical polarization sensitivity reduction. With the optimized structure, only 1 percent dependence in optical polarization is obtained while ensuring good RF access. Measurements up…

43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Sep 2018, Nagoya, Japan. ⟨10.1109/IRMMW-THz.2018.8510466⟩. ⟨hal-03286176⟩

Communication dans un congrès

A comparative preprocessing study for softcast video transmission

Anthony Trioux, François-Xavier Coudoux, Patrick Corlay, M Gharbi

An original wireless video transmission scheme called SoftCast has been recently proposed to deal with the issues encountered in conventional wireless video broadcasting systems such as cliff effect. In this paper, we first review the SoftCast scheme. We then analyze and compare two simple…

2018 9th International Symposium on Signal, Image, Video and Communications (ISIVC), Nov 2018, Rabat, Morocco. pp.54-59, ⟨10.1109/ISIVC.2018.8709171⟩. ⟨hal-03335982⟩

Article dans une revue

Resolving the Controversial Existence of Silicene and Germanene Nanosheets Grown on Graphite

Wenbing Peng, Tao Xu, Pascale Diener, Louis Biadala, Maxime Berthe, Xiaodong Pi, Yves Borensztein, Alberto Curcella, Romain Bernard, Geoffroy Prévot, B. Grandidier

The highly oriented pyrolytic graphite (HOPG) surface, consisting of a dangling bond-free lattice, is regarded as a potential substrate for van der Waals heteroepitaxy of two-dimensional layered materials. In this work, the growth of silicon and germanium on HOPG is investigated with scanning…

ACS Nano, 2018, 12 (5), pp.4754-4760. ⟨10.1021/acsnano.8b01467⟩. ⟨hal-03037862v2⟩

Article dans une revue

Non-destructive characterization of surfaces and thin coatings using a large-bandwidth interdigital transducer

Dame Fall, Marc Duquennoy, Mohammadi Ouaftouh, Nikolay Smagin, Bogdan Piwakowski, Frédéric Jenot

This paper deals with non-destructive testing of thin layer structures using Rayleigh-type waves over a broad frequency range (25-125 MHz). The dispersion phenomenon was used to characterize a layer-on-substrate-type sample comprising a thin layer of platinum 100 nm thick on a silicon substrate.…

Review of Scientific Instruments, 2018, 89 (12), pp.124901. ⟨10.1063/1.5045213⟩. ⟨hal-03185106⟩

Article dans une revue

Multimodal imaging technology by integrated scanning electron, force, and microwave microscopy and its application to study microscaled capacitors

Olaf C Haenssler, Sergej Fatikow, Didier Theron

Extracting simultaneously multimodal nanoscale specimen information, by an integrated microscopy technology, is in the focus of this report. The combination of multiple imaging techniques allows for obtaining complementary and often unique datasets of samples under test. An instrumental setup…

Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics, 2018, 36 (2), pp.022901. ⟨10.1116/1.5006161⟩. ⟨hal-03022536⟩

Article dans une revue

Performance evaluation of an IMDD optical OFDM-CDMA system

Sofien Mhatli, Hichem Mrabet, Elias Giacoumidis, Iyad Dayoub

In this paper, we propose a modulation technique for passive optical networks that harnesses two-dimensional prime hop system optical code division multiplexing access (OCDMA) and optical orthogonal frequency-division multiplexing (OFDM) for intensity modulation with direct-detection (IMDD) to…

Applied optics, 2018, 57 (7), pp.1569-1574. ⟨10.1364/AO.57.001569⟩. ⟨hal-03185117⟩

Article dans une revue

Effective and rapid technique for temporal response modeling of surface acoustic wave interdigital transducers

Dame Fall, Marc Duquennoy, Mohammadi Ouaftouh, Bogdan Piwakowski, Frédéric Jenot

Surface Acoustic Wave Interdigital Transducers (SAW-IDT) has a considerable application potential for characterization of properties of thin layers, coatings and functional surfaces. For optimization of these SAW-IDTs, it is necessary to study various SAW-IDT configurations by varying the number of…

Ultrasonics, 2018, 82, pp.371-378. ⟨10.1016/j.ultras.2017.09.018⟩. ⟨hal-03183502⟩

Article dans une revue

A time-domain model and experimental validation of the acoustic field radiated by air-coupled transducers

Ji Li, Bogdan Piwakowski

This paper presents a time-domain model for the prediction of an acoustic field in an air-coupled, noncontact, ultrasonic setup, which includes an air-coupled Emitter, the Propagation space and an aircoupled Receiver (EPR). The model takes into account the finite size of the aperture receiver,…

Ultrasonics, 2018, 82, pp.114-129. ⟨10.1016/j.ultras.2017.07.020⟩. ⟨hal-03183512⟩

Article dans une revue

Controlled modiﬁcation of electrochemical microsystems with polyethylenimine/reduced graphene oxide using electrophoretic deposition: Sensing of dopamine levels in meat samples

Karima Kahlouche, Roxana Jijie, Ioana Hosu, Alexandre Barras, Reda Yahiaoui, Tijani Gharbi, Guillaume Herlem, Ferhat Marhoun, Sabine Szunerits, Rabah Boukherroub

Microsystems play an important role in many biological and environmental applications. The integration of electrical interfaces into such miniaturized systems provides new opportunities for electrochemical sensing where high sensitivity and selectivity towards the analyte are requested. This can be…

Talanta, 2018, 178, pp.432 - 440. ⟨10.1016/j.talanta.2017.09.065⟩. ⟨hal-02131420⟩