16 results on '"Département Electronique et Physique (TSP - EPH)"'
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2. Experimental observation of ultrasound fast and slow waves through three-dimensional printed trabecular bone phantoms
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Fabien Mézière, Renaud Boistel, Arnaud Derode, Petra Jusková, Laurent Malaquin, Marie Muller, Emmanuel Bossy, J. Woittequand, Institut Langevin - Ondes et Images (UMR7587) (IL), Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Physico-Chimie-Curie (PCC), Centre National de la Recherche Scientifique (CNRS)-Institut Curie [Paris]-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC), Département Electronique et Physique (EPH), Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP), Ecole Polytechnique Fédérale de Lausanne (EPFL), Institut International de Paléoprimatologie, Paléontologie Humaine : Evolution et Paléoenvironnement (IPHEP), Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers, Institut Langevin ondes et images, Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-ESPCI ParisTech-Centre National de la Recherche Scientifique (CNRS), Physique des ondes pour la médecine, Université Paris Diderot - Paris 7 (UPD7)-ESPCI ParisTech-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut Curie [Paris], Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut Curie [Paris]-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Département Electronique et Physique (TSP - EPH), and Université de Poitiers-Centre National de la Recherche Scientifique (CNRS)
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medicine.medical_specialty ,Materials science ,Time Factors ,Acoustics and Ultrasonics ,[SDV.BID]Life Sciences [q-bio]/Biodiversity ,01 natural sciences ,030218 nuclear medicine & medical imaging ,law.invention ,03 medical and health sciences ,Motion ,0302 clinical medicine ,Arts and Humanities (miscellaneous) ,law ,0103 physical sciences ,Image Interpretation, Computer-Assisted ,medicine ,PHASE CONTRAST IMAGING ,Animals ,Medical physics ,BONE MICROARCHITECTURE ,Femur ,Horses ,[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics ,010301 acoustics ,Stereolithography ,ComputingMilieux_MISCELLANEOUS ,Ultrasonography ,business.industry ,Phantoms, Imaging ,PHASE CONTRAST MICROTOMOGRAPHY ,Ultrasound ,Equipment Design ,X-Ray Microtomography ,Synchrotron ,Trabecular bone ,Ultrasonic Waves ,FRELON CAMERA ,Printing, Three-Dimensional ,business ,Epiphyses ,Software ,Synchrotrons ,Biomedical engineering - Abstract
International audience; In this paper, ultrasound measurements of 1:1 scale three-dimensional (3D) printed trabecular bone phantoms are reported. The micro-structure of a trabecular horse bone sample was obtained via synchrotron x-ray microtomography, converted to a 3D binary data set, and successfully 3D-printed at scale 1:1. Ultrasound through-transmission experiments were also performed through a highly anisotropic version of this structure, obtained by elongating the digitized structure prior to 3D printing. As in real anisotropic trabecular bone, both the fast and slow waves were observed. This illustrates the potential of stereolithography and the relevance of such bone phantoms for the study of ultrasound propagation in bone.
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- 2016
- Full Text
- View/download PDF
3. Shear thickening of Laponite suspensions with poly (ethylene oxide)
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Abdoulaye Fall, Daniel Bonn, Fall, Abdoulaye, Département Electronique et Physique (EPH), Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP), Laboratoire de Physique Statistique de l'ENS (LPS), Université Paris Diderot - Paris 7 (UPD7)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Soft Matter (WZI, IoP, FNWI), Département Electronique et Physique (TSP - EPH), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
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[PHYS]Physics [physics] ,chemistry.chemical_classification ,Dilatant ,Materials science ,Oxide ,General Chemistry ,Polymer ,Polyethylene oxide ,Condensed Matter Physics ,[PHYS] Physics [physics] ,[PHYS.COND.CM-SCM] Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] ,chemistry.chemical_compound ,chemistry ,Rheology ,Shear (geology) ,[PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] ,Composite material ,[PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] ,ComputingMilieux_MISCELLANEOUS ,[PHYS.COND] Physics [physics]/Condensed Matter [cond-mat] ,Poly ethylene - Abstract
We study the effect of addition of polyethylene oxide (PEO) on the rheological behavior of suspensions of Laponite. Experiments were performed on mixtures of PEO and Laponite at different concentrations. These mixtures can exhibit very strong shear thickening behavior: under shear, the suspension can become a yield stress material sufficiently strong to support its own weight. Depending on the polymer concentration, we observe continuous or discontinuous shear thickening mechanisms; it is the discontinuous shear thickening that leads to the formation of yield stress materials.
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- 2012
4. Thermal-Signature-Based Sleep Analysis Sensor
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Andrea Pinna, Dan Istrate, Ali Seba, Toufik Guettari, Patrick Garda, Adrien Ugon, Biomécanique et Bioingénierie (BMBI), Université de Technologie de Compiègne (UTC)-Centre National de la Recherche Scientifique (CNRS), Systèmes Electroniques (SYEL), Laboratoire d'Informatique de Paris 6 (LIP6), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Recherche et d'Innovation Technologique (ESIGETEL) (LRIT), Département Electronique et Physique (TSP - EPH), Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP), and Département Electronique et Physique (EPH)
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medicine.medical_specialty ,Computer science ,Computer Networks and Communications ,media_common.quotation_subject ,0206 medical engineering ,02 engineering and technology ,Polysomnography ,Electromyography ,Audiology ,Electroencephalography ,thermopile sensor ,actimetry ,thermal camera ,data classification ,tele-medicine ,polysomnography ,03 medical and health sciences ,Muscle tone ,0302 clinical medicine ,[INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing ,medicine ,ComputingMilieux_MISCELLANEOUS ,Simulation ,media_common ,Sleep Stages ,lcsh:T58.5-58.64 ,medicine.diagnostic_test ,Hypnogram ,lcsh:Information technology ,business.industry ,Communication ,biomedical_chemical_engineering ,Electrooculography ,020601 biomedical engineering ,Human-Computer Interaction ,medicine.anatomical_structure ,Sleep (system call) ,business ,030217 neurology & neurosurgery ,Vigilance (psychology) - Abstract
This paper address the development of a new technic in the sleep analysis domain. Sleep is defined as a periodic physiological state during which vigilance is suspended and reactivity to external stimulations diminished. We sleep on average between six and nine hours per night and our sleep is composed of four to six cycles of about 90-minutes each. Each of these cycles is composed of a succession of several stages of sleep, more or less deep. The analysis of sleep is usually done using a polysomnography. This examination consists of recording, among other things, electrical cerebral activity by electroencephalography (EEG), ocular movements by electrooculography (EOG) and chin muscle tone by electromyography (EMG). The recording is done mostly in a hospital, more specifically in a service for monitoring the pathologies related to sleep. The readings are then interpreted manually by an expert to generate a hypnogram, a curve showing the succession of sleep stages during the night in 30-second epochs. The proposed method is based on the follow-up of the thermal signature that makes it possible to classify the activity into three classes: "awakening", "calm sleep" and "agitated sleep". The contribution of this non-invasive method is part of the screening of sleep disorders, to be validated by a more complete analysis of the sleep. The measure provided by this new system, based on temperature monitoring (patient and ambient), aims to be integrated into the tele-medicine platform developed within the framework of the Smart-EEG project by the SYEL - SYstèmes ELectroniques team. Analysis of the data collected during the first surveys carried out with this method showed a correlation between thermal signature and activity during sleep. The advantage of this method lies in its simplicity and the possibility of carrying out measurements of activity during sleep and without direct contact with the patient at home or hospitals.
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- 2017
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5. Traffic forecast impact on spectrum fragmentation in gridless optical networks
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Edoardo Bonetto, Nicolas Brochier, Catherine Lepers, Esther Le Rouzic, Djamel Amar, Orange Labs [Lannion], France Télécom, Department of Electronics [Torino] (DELEN), Politecnico di Torino = Polytechnic of Turin (Polito), Département Electronique et Physique (EPH), Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP), Services répartis, Architectures, MOdélisation, Validation, Administration des Réseaux (SAMOVAR), Centre National de la Recherche Scientifique (CNRS), European Project: SASER, and Département Electronique et Physique (TSP - EPH)
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Multiwavelength optical networking ,Engineering ,Traffic forecast ,business.industry ,Fragmentation (computing) ,02 engineering and technology ,Optical performance monitoring ,01 natural sciences ,010309 optics ,[INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI] ,020210 optoelectronics & photonics ,0103 physical sciences ,0202 electrical engineering, electronic engineering, information engineering ,Electronic engineering ,business ,ComputingMilieux_MISCELLANEOUS - Abstract
International audience
- Published
- 2014
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6. Optical Power Control in GMPLS Control Plane
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Djamel Amar, Bernard Cousin, Julien Meuric, Mohamad Kanj, Esther Le Rouzic, Institut de Recherche Technologique b-com (IRT b-com), Orange Labs [Lannion], France Télécom, Advanced technologies for operated networks (ADOPNET), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-RÉSEAUX, TÉLÉCOMMUNICATION ET SERVICES (IRISA-D2), Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Université de Bretagne Sud (UBS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National de Recherche en Informatique et en Automatique (Inria)-École normale supérieure - Rennes (ENS Rennes)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-CentraleSupélec-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Bretagne Sud (UBS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Institut National de Recherche en Informatique et en Automatique (Inria)-École normale supérieure - Rennes (ENS Rennes)-Centre National de la Recherche Scientifique (CNRS)-CentraleSupélec, Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Télécom Bretagne-RÉSEAUX, TÉLÉCOMMUNICATION ET SERVICES (IRISA-D2), CentraleSupélec-Télécom Bretagne-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de Recherche en Informatique et en Automatique (Inria)-École normale supérieure - Rennes (ENS Rennes)-Université de Bretagne Sud (UBS)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Télécom Bretagne-Université de Rennes 1 (UR1), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Institut National de Recherche en Informatique et en Automatique (Inria)-École normale supérieure - Rennes (ENS Rennes)-Université de Bretagne Sud (UBS)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Département Electronique et Physique (EPH), Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP), Services répartis, Architectures, MOdélisation, Validation, Administration des Réseaux (SAMOVAR), Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR)-IMT Atlantique (IMT Atlantique), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR)-Télécom Bretagne-RÉSEAUX, TÉLÉCOMMUNICATION ET SERVICES (IRISA-D2), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Département Electronique et Physique (TSP - EPH)
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Multiwavelength optical networking ,control plane ,Engineering ,Optical power budget ,Computer Networks and Communications ,Physics::Optics ,02 engineering and technology ,Optical burst switching ,01 natural sciences ,Passive optical network ,RSVP-TE ,010309 optics ,[INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI] ,020210 optoelectronics & photonics ,OSPF-TE ,Optical Transport Network ,0103 physical sciences ,0202 electrical engineering, electronic engineering, information engineering ,Electronic engineering ,ComputingMilieux_MISCELLANEOUS ,Optical communications repeater ,Optical amplifier ,business.industry ,Optical performance monitoring ,Flex-Grid ,Optical link design ,GMPLS ,Optical power control ,business ,Computer network - Abstract
The exponential traffic growth in optical networks has triggered the evolution from fixed-grid to flex-grid technology. This evolution allows better spectral efficiency and spectrum usage over current optical networks in order to facilitate huge dynamic traffic demands. The promise of flex-grid technology in terms of increasing the number of optical channels established over optical links, however, may not be sustainable because of the associated increase in optical amplification power. In this work, we detail a power control process that takes advantage of link optical power and channel optical signal-to-noise ratio (OSNR) margins to allow network operators to support this optical power increase while maintaining the use of legacy optical amplifiers. New generalized multiprotocol label switching (GMPLS) protocol extensions are proposed on which to integrate the optical power control process in the control plane. The performance of the process is evaluated in terms of the blocking ratio and network throughput over fixed-grid and flex-grid networks. Results show that controlling optical power benefits from the flex-grid technology in terms of spectrum and capacity gain and reduces optical connection blocking.
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- 2016
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7. Modeling and characterization of a few-mode EDFA supporting four mode groups for mode division multiplexing
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Laurent Bigot, Antoine Le Rouge, Clemens Koebele, Yves Quiquempois, Marianne Bigot-Astruc, Pierre Sillard, Massimilliano Salsi, Guillaume Le Cocq, Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS), Services répartis, Architectures, MOdélisation, Validation, Administration des Réseaux (SAMOVAR), Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP), Département Electronique et Physique (EPH), Centre National de la Recherche Scientifique (CNRS), and Département Electronique et Physique (TSP - EPH)
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Mode scrambler ,Optical fiber ,chemistry.chemical_element ,02 engineering and technology ,Polarization-division multiplexing ,01 natural sciences ,law.invention ,010309 optics ,Erbium ,020210 optoelectronics & photonics ,Optics ,law ,Wavelength-division multiplexing ,Oscillometry ,0103 physical sciences ,Materials Testing ,0202 electrical engineering, electronic engineering, information engineering ,Dispersion-shifted fiber ,Scattering, Radiation ,Optical Fibers ,ComputingMilieux_MISCELLANEOUS ,Physics ,Mode volume ,[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] ,Multi-mode optical fiber ,Amplifiers, Electronic ,business.industry ,Lasers ,Equipment Design ,Atomic and Molecular Physics, and Optics ,chemistry ,Computer-Aided Design ,business - Abstract
Numerical and experimental study of a Few-Mode (FM) Erbium Doped Fiber Amplifier (EDFA) suitable for mode division multiplexing (MDM) is reported. Based on numerical simulations, a Few-Mode Erbium Doped Fiber (FM-EDF) has been designed to amplify four mode groups and to equally amplify LP11 and LP21 mode groups with gains greater than 20 dB and with a differential modal gain of less than 1 dB. Experimental results confirmed the simulations with a good concordance. This modal gain equalization is obtained by tailoring the erbium spatial distribution in the fiber core with a ring-shaped profile.
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- 2012
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8. Software Radio FM Broadcast Receiver for Audio Indexing Applications
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F. de Dieuleveult, B. Happi Tietche, Bertrand Granado, Gérard Chollet, Sylvain Viateur, Houssemeddine Khemiri, L. Benaroya, Bruce Denby, Dijana Petrovska-Delacrétaz, Raphaël Blouet, Olivier Romain, Khalil Hachicha, ASTRE [Cergy-Pontoise], Equipes Traitement de l'Information et Systèmes (ETIS - UMR 8051), Ecole Nationale Supérieure de l'Electronique et de ses Applications (ENSEA)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY)-Ecole Nationale Supérieure de l'Electronique et de ses Applications (ENSEA)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY), Laboratoire Signaux, Modèles et Apprentissage Statistique (SIGMA), Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Analyse et synthèse sonores [Paris], Sciences et Technologies de la Musique et du Son (STMS), Institut de Recherche et Coordination Acoustique/Musique (IRCAM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche et Coordination Acoustique/Musique (IRCAM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Ecole Nationale Supérieure de l'Electronique et de ses Applications (ENSEA)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY), Laboratoire Traitement et Communication de l'Information (LTCI), Télécom ParisTech-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS), Département Traitement du Signal et des Images (TSI), Télécom ParisTech-Centre National de la Recherche Scientifique (CNRS), Département Electronique et Physique (TSP - EPH), Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP), Services répartis, Architectures, MOdélisation, Validation, Administration des Réseaux (SAMOVAR), Centre National de la Recherche Scientifique (CNRS), YACAST, Yacast, Systèmes Electroniques (SYEL), Laboratoire d'Informatique de Paris 6 (LIP6), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Département Electronique et Physique (EPH), and Granado, Bertrand
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[INFO.INFO-AR]Computer Science [cs]/Hardware Architecture [cs.AR] ,[INFO.INFO-AR] Computer Science [cs]/Hardware Architecture [cs.AR] ,Broadcast engineering ,business.industry ,Computer science ,Search engine indexing ,020206 networking & telecommunications ,02 engineering and technology ,Software-defined radio ,Radio spectrum ,[SPI.TRON] Engineering Sciences [physics]/Electronics ,[SPI.TRON]Engineering Sciences [physics]/Electronics ,020204 information systems ,Embedded system ,0202 electrical engineering, electronic engineering, information engineering ,Demodulation ,Channel (broadcasting) ,business ,Frequency modulation ,Radio broadcasting ,Computer hardware ,ComputingMilieux_MISCELLANEOUS - Abstract
International audience; Broadcast radio is a rich but underexploited source of multimedia content. To make this available to users, it will be indispensable to develop new types of navigators capable of searching the large quantities of information contained in the radio bands. The article introduces a prototype of a new software radio enabled broadcast media navigator implemented on an FPGA, which is able to demodulate simultaneously all channel in the FM band and perform audio indexing upon them, ultimately using a Graphics Processing Unit.
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- 2012
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9. Optical CDMA enhanced by nonlinear optics
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Ware , Cedric, Cordette , Steevy, Lepers , Catherine, Fsaifes , Ihsan, Tonello , Alessandro, Couderc , Vincent, Douay , Marc, Millot , Guy, Finot , Christophe, Laboratoire Traitement et Communication de l'Information (LTCI), Télécom ParisTech-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS), Département Electronique et Physique (TSP - EPH), Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP), Services répartis, Architectures, MOdélisation, Validation, Administration des Réseaux (SAMOVAR), Centre National de la Recherche Scientifique (CNRS), Photonique (Photonique), Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), PHOTONIQUE, XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Université de Lille-Centre National de la Recherche Scientifique (CNRS), Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Département Electronique et Physique (EPH), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Couderc, Vincent, Laboratoire Traitement et Communication de l'Information ( LTCI ), Télécom ParisTech-Institut Mines-Télécom [Paris]-Centre National de la Recherche Scientifique ( CNRS ), Département Electronique et Physique ( EPH ), Institut Mines-Télécom [Paris]-Télécom SudParis ( TSP ), Services répartis, Architectures, MOdélisation, Validation, Administration des Réseaux ( SAMOVAR ), Institut Mines-Télécom [Paris]-Télécom SudParis ( TSP ) -Centre National de la Recherche Scientifique ( CNRS ), Photonique, Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 ( PhLAM ), Université de Lille-Centre National de la Recherche Scientifique ( CNRS ) -Université de Lille-Centre National de la Recherche Scientifique ( CNRS ), XLIM ( XLIM ), Université de Limoges ( UNILIM ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Limoges ( UNILIM ) -Centre National de la Recherche Scientifique ( CNRS ), Université de Lille-Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), and Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS )
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[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics] ,[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] ,[ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics] ,ComputingMilieux_MISCELLANEOUS - Abstract
International audience
- Published
- 2010
10. Supercontinuum généré par fibre optique à cristal photonique pour l'accès multiple à répartition par code
- Author
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Finot, Christophe, Couderc, Vincent, Lepers, Catherine, Ware, Cédric, Kibler, Bertrand, Cordette, Steevy, Fsaifes, Ihsan, Tonello, Alessandro, Douay, Marc, Wabnitz, S., Millot, Guy, Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), PHOTONIQUE, XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Département Electronique et Physique (EPH), Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP), Département Communications & Electronique (COMELEC), Laboratoire Traitement et Communication de l'Information (LTCI), Télécom ParisTech-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Télécom ParisTech-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure des Télécommunications (ENST), Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique de l'Université de Bourgogne (LPUB), ANR-06-BLAN-0401,SUPERCODE,Supercontinuum généré par fibre optique à cristal photonique pour l'accès multiple à répartition par code(2006), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), XLIM ( XLIM ), Université de Limoges ( UNILIM ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Limoges ( UNILIM ) -Centre National de la Recherche Scientifique ( CNRS ), Département Electronique et Physique ( EPH ), Institut Mines-Télécom [Paris]-Télécom SudParis ( TSP ), Département COMELEC - Communications & Electronique, Laboratoire Traitement et Communication de l'Information ( LTCI ), Télécom ParisTech-Institut Mines-Télécom [Paris]-Centre National de la Recherche Scientifique ( CNRS ) -Télécom ParisTech-Institut Mines-Télécom [Paris]-Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 ( PhLAM ), Université de Lille-Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Physique de l'Université de Bourgogne ( LPUB ), ANR-06-BLAN-0401,SUPERCODE,Supercontinuum généré par fibre optique à cristal photonique pour l'accès multiple à répartition par code ( 2006 ), Finot, Christophe, Programme 'blanc' - Supercontinuum généré par fibre optique à cristal photonique pour l'accès multiple à répartition par code - - SUPERCODE2006 - ANR-06-BLAN-0401 - BLANC - VALID, Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), and Département Electronique et Physique (TSP - EPH)
- Subjects
[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics] ,[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] ,[ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics] ,ComputingMilieux_MISCELLANEOUS - Abstract
National audience
- Published
- 2010
11. Yielding and shear banding in soft glassy materials
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Daniel Bonn, Abdoulaye Fall, José Paredes, Département Electronique et Physique (TSP - EPH), Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP), Universidad de Los Andes [Mérida, Venezuela] (ULA), Laboratoire de Physique Statistique de l'ENS (LPS), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Département Electronique et Physique (EPH), Universidad de Los Andes [Venezuela] (ULA), Université Paris Diderot - Paris 7 (UPD7)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Soft Matter (WZI, IoP, FNWI), and Fall, Abdoulaye
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[PHYS]Physics [physics] ,Thixotropy ,Materials science ,Yield (engineering) ,General Physics and Astronomy ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,[PHYS] Physics [physics] ,[PHYS.COND.CM-SCM] Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] ,Shear rate ,Shear (geology) ,Critical resolved shear stress ,0103 physical sciences ,Pseudoelasticity ,Shear stress ,Composite material ,[PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] ,010306 general physics ,0210 nano-technology ,[PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] ,[PHYS.COND] Physics [physics]/Condensed Matter [cond-mat] ,ComputingMilieux_MISCELLANEOUS - Abstract
Yield stress fluids have proven difficult to characterize, and a reproducible determination of the yield stress is difficult. We study two types of yield stress fluids (YSF) in a single system: simple and thixotropic ones. This allows us to show that simple YSF are simply a special case of thixotropic ones, and to pinpoint the difference between static and dynamic yield stresses, one of the major problems in the field. The thixotropic systems show a strong time dependence of the viscosity due to the existence of an internal percolated structure that confers the yield stress to the material. Using loaded emulsions to control the thixotropy, we show that the transition to flow at the yield stress is discontinuous for thixotropic materials, and continuous for ideal ones. The discontinuity leads to a critical shear rate below which no steady flows can be observed, accounting for the ubiquitous shear banding observed in these materials.
- Published
- 2010
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12. An attempt to categorize yield stress fluid behaviour
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Vijayakumar Chikkadi, Peder Moller, Abdoulaye Fall, Daniel Bonn, Didi Derks, Laboratoire de Physique Statistique de l'ENS (LPS), Université Paris Diderot - Paris 7 (UPD7)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Département Electronique et Physique (EPH), Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP), Laboratoire de Physique, École normale supérieure - Lyon (ENS Lyon)-Université de Lyon, Fall, Abdoulaye, Soft Matter (WZI, IoP, FNWI), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Département Electronique et Physique (TSP - EPH), and École normale supérieure de Lyon (ENS de Lyon)-Université de Lyon
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[PHYS]Physics [physics] ,Thixotropy ,Yield (engineering) ,General Mathematics ,General Engineering ,General Physics and Astronomy ,02 engineering and technology ,Mechanics ,021001 nanoscience & nanotechnology ,01 natural sciences ,[PHYS] Physics [physics] ,[PHYS.COND.CM-SCM] Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] ,Shear (geology) ,Rheology ,0103 physical sciences ,Shear stress ,[PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] ,010306 general physics ,0210 nano-technology ,[PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] ,[PHYS.COND] Physics [physics]/Condensed Matter [cond-mat] ,ComputingMilieux_MISCELLANEOUS ,Mathematics - Abstract
We propose a new view on yield stress materials. Dense suspensions and many other materials have a yield stress—they flow only if a large enough shear stress is exerted on them. There has been an ongoing debate in the literature on whether true yield stress fluids exist, and even whether the concept is useful. This is mainly due to the experimental difficulties in determining the yield stress. We show that most if not all of these difficulties disappear when a clear distinction is made between two types of yield stress fluids: thixotropic and simple ones. For the former, adequate experimental protocols need to be employed that take into account the time evolution of these materials: ageing and shear rejuvenation. This solves the problem of experimental determination of the yield stress. Also, we show that true yield stress materials indeed exist, and in addition, we account for shear banding that is generically observed in yield stress fluids.
- Published
- 2009
13. Mask pattern interference in AlGaInAs selective area metal-organic vapor-phase epitaxy: Experimental and modeling analysis
- Author
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Francis Poingt, N. Lagay, Abdallah Ougazzaden, Christophe Kazmierski, Jean Decobert, Abderrahim Ramdane, Nicolas Dupuis, Pierre-Yves Lagrée, Laboratoire de Physique Théorique de la Matière Condensée (LPTMC), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Alcatel-Thalès III-V lab (III-V Lab), THALES [France]-ALCATEL, Institut Jean le Rond d'Alembert (DALEMBERT), Alcatel-Thales III-V Lab (III-V Lab), THALES [France], Département Electronique et Physique (TSP - EPH), Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP), Laboratoire de photonique et de nanostructures (LPN), Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), THALES-ALCATEL, THALES, and Département Electronique et Physique (EPH)
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Materials science ,Band gap ,General Physics and Astronomy ,chemistry.chemical_element ,02 engineering and technology ,Epitaxy ,01 natural sciences ,Gallium arsenide ,chemistry.chemical_compound ,Optics ,Phase (matter) ,0103 physical sciences ,Metalorganic vapour phase epitaxy ,[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] ,Gallium ,Diffusion (business) ,[PHYS.MECA.BIOM]Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph] ,ComputingMilieux_MISCELLANEOUS ,010302 applied physics ,business.industry ,021001 nanoscience & nanotechnology ,Semiconductor ,chemistry ,[PHYS.MECA.THER]Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph] ,Optoelectronics ,0210 nano-technology ,business - Abstract
We studied selective area growth modeling and characterization of the AlGaInAs material system. We used a three-dimensional vapor phase diffusion model to extract the effective diffusion lengths of Al, Ga, and In species from measured thickness profiles of the three binaries AlAs, GaAs, and InP. Our growth conditions yield to 50, 85, and 10 μm for Al, Ga, and In, respectively. Based on these values, we achieved a precise prediction of AlGaInAs thickness, composition, band gap, and biaxial strain variations in different selective area growth conditions. Particular attention was paid to the influence of neighboring cells in the case of high mask density. This configuration occurs in practical component mask layout. High mask density leads to interferences between masked cells and enhances the effect of the long diffusion length of aluminum and gallium species. Then, the biaxial strain is tensile shifted and the band gap is blue shifted in the vicinity of a mask, compared to reference material features grown...
- Published
- 2008
- Full Text
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14. Modeling and characterization of AlGaInAs and related materials using selective area growth by metal-organic vapor-phase epitaxy
- Author
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Christophe Kazmierski, C. Cuisin, Abdallah Ougazzaden, Francis Poingt, Jean Decobert, Nicolas Dupuis, Pierre-Yves Lagrée, N. Lagay, Abderrahim Ramdane, Alcatel-Thalès III-V lab (III-V Lab), THALES-ALCATEL, Laboratoire de Physique Théorique de la Matière Condensée (LPTMC), Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Institut Jean le Rond d'Alembert (DALEMBERT), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Département Electronique et Physique (EPH), Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP), Laboratoire de photonique et de nanostructures (LPN), Centre National de la Recherche Scientifique (CNRS), Laboratoire Opto+, Alcatel R&I Marcoussis, ALCATEL, Alcatel-Thales III-V Lab (III-V Lab), THALES, THALES [France]-ALCATEL, Département Electronique et Physique (TSP - EPH), and THALES [France]
- Subjects
chemistry.chemical_element ,Mineralogy ,02 engineering and technology ,Epitaxy ,01 natural sciences ,Inorganic Chemistry ,Metal ,Aluminium ,Phase (matter) ,0103 physical sciences ,Materials Chemistry ,[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] ,Gallium ,Diffusion (business) ,[PHYS.MECA.BIOM]Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph] ,ComputingMilieux_MISCELLANEOUS ,010302 applied physics ,business.industry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Characterization (materials science) ,chemistry ,visual_art ,visual_art.visual_art_medium ,[PHYS.MECA.THER]Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph] ,Optoelectronics ,0210 nano-technology ,business ,Indium - Abstract
Thicknesses and compositions of AlGaInAs-based layers grown by low-pressure metal-organic vapor-phase epitaxy (LP-MOVPE) in the regime of selective area growth (SAG) have been measured and calculated. In this study, we have grown InAs, GaAs and AlAs binary bulk layers on patterned InAs and GaAs substrates, respectively, in order to assess separately the vapor-phase diffusion (VPD) length (D/k) of indium, gallium and aluminum species. Special care has been taken in the evaluation of the Aluminum D/k ratio, on which little information was available. A 3D VPD model has been used to predict the composition and thickness profiles of various alloys. The calculated profiles have been compared to the experimental ones for GaInAs, AlInAs, AlGaInAs layers and GaAlAs layers deposited on patterned InP and GaAs substrates, respectively. The good agreement between modeling and experiment, together with the perfect selectivity obtained for all the different alloys, holds for the validity of the calculated D/k ratio of Al, Ga and In species. In MOVPE-SAG, the efficiency of a computational model is a key issue for the engineering of future SAG integrated optical devices.
- Published
- 2007
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15. Pattern formation by dewetting and evaporating sedimenting suspensions
- Author
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Daniel Bonn, Mehdi Habibi, Abdoulaye Fall, Peder Moller, Salima Rafaï, Laboratoire de Physique Statistique de l'ENS (LPS), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Département Electronique et Physique (TSP - EPH), Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP), Laboratoire Interdisciplinaire de Physique [Saint Martin d’Hères] (LIPhy), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Soft Matter (WZI, IoP, FNWI), Université Paris Diderot - Paris 7 (UPD7)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Département Electronique et Physique (EPH), and Fall, Abdoulaye
- Subjects
Length scale ,Materials science ,Evaporation ,Pattern formation ,01 natural sciences ,[PHYS] Physics [physics] ,010305 fluids & plasmas ,Viscosity ,Optics ,0103 physical sciences ,Life Science ,Dewetting ,[PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] ,Thin film ,010306 general physics ,ComputingMilieux_MISCELLANEOUS ,[PHYS]Physics [physics] ,business.industry ,Contact line ,General Chemistry ,Condensed Matter Physics ,[PHYS.COND.CM-SCM] Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] ,Chemical physics ,Particle ,business ,[PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] ,[PHYS.COND] Physics [physics]/Condensed Matter [cond-mat] - Abstract
Pattern formation from drying droplets containing sedimenting particles and dewetting of thin films of such suspensions was studied. The dewetting causes the formation of finger-like patterns near the contact line which leave behind a deposit of branches. We find that the strikingly low speed of dewetting is due to the high particle concentration in the contact line region, leading to a strongly enhanced viscosity. For pattern formation from drying droplets (containing particles), evaporation also causes dewetting. In both cases, we find a similar relationship between the size of the patterns and the dewetting speed. The coefficient of this relationship gives us the effective viscosity at the contact line. We present a simple model that accounts for this, and that shows that the size of the particles is the relevant length scale in both problems.
- Published
- 2012
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16. TCT-107 The DISCOVER Registry: 1 Year outcomes of a fully re-positionable and retrievable non-metallic transcatheter aortic valve in a real-world population
- Author
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Fernando Gatto, Thierry Lefèvre, Ulrich Hink, Martine Gilard, Karl-Heinz Kuck, Antonio Colombo, Christoph Naber, Federico De Marco, Jan Van der Heyden, Christian Butter, Didier Tchetche, Guus R. G. Brueren, Smita Scholtz, Peter den Heijer, Dimitar Divchev, Wolfgang Schillinger, Azeem Latib, Federico M. Asch, Hüseyin Ince, Joachim Schofer, Peter Frambach, Giuseppe Bruschi, Stephan Kische, Daniel R. Wagner, Hervé Le Breton, Georg Nickenig, Laboratory of Cardiovascular Research, Centre de Recherche Public de la Santé, Division of Cardiology, Hôpital Minicipal et Clinique D'Eich-Centre Hospitalier du Luxembourg (CHL), Optimisation des régulations physiologiques (ORPHY (EA 4324)), Université de Brest (UBO)-Centre Hospitalier Régional Universitaire de Brest (CHRU Brest)-Institut Brestois Santé Agro Matière (IBSAM), Université de Brest (UBO)-Université de Brest (UBO), Département Electronique et Physique (TSP - EPH), Institut Mines-Télécom [Paris] (IMT)-Télécom SudParis (TSP), Laboratoire Traitement du Signal et de l'Image (LTSI), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Pontchaillou [Rennes], Département Electronique et Physique (EPH), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM), and Jonchère, Laurent
- Subjects
[SDV.IB] Life Sciences [q-bio]/Bioengineering ,Aortic valve ,medicine.medical_specialty ,Transcatheter aortic ,business.industry ,030204 cardiovascular system & hematology ,Direct flow ,03 medical and health sciences ,0302 clinical medicine ,medicine.anatomical_structure ,Internal medicine ,medicine ,Cardiology ,[SDV.IB]Life Sciences [q-bio]/Bioengineering ,030212 general & internal medicine ,Radiology ,Cardiology and Cardiovascular Medicine ,business ,ComputingMilieux_MISCELLANEOUS - Abstract
The Direct Flow Medical Trans-catheter Aortic Valve System has a non-metallic design with a pressurized support structure, which allows precise positioning, retrieval and full hemodynamic assessment of valve performance prior to permanent implantation. The DISCOVER registry is a European prospective
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- View/download PDF
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