Concept

Section d'un fibré

Publications associées (15)

Electronic fibres via the thermal drawing of liquid-metal-embedded elastomers

Soft electronic fibres are potential building blocks for a variety of emerging technologies including smart textiles and wearable health monitors. However, it remains a challenge to fabricate fibres that combine conductive and dielectric domains in complex architectures in a simple and scalable way. Here we show that a thermal drawing approach can be used to fabricate stretchable fibre-based sensors from liquid-metal-embedded elastomers. The material formulation and processing parameters can be controlled t

2025

Positioner using optical relay for the MOSAIC Instrument

MOSAIC is a versatile multi-object spectrograph that will use the widest possible field-of-view provided by the ELT (Extremely Large Telescope). It will have three operating modes that cover observations in visible and infrared light for more than a hundred sources simultaneously by three hundred positioners on the focal plane. The larger size of the patrol area does not allow the use of optical fibers and the light of the pointed galaxies is send to the fiber bundles through the hollow arms of the position

SPIE2024

Dissipative coherent structures and satellite comb generation in dispersion-periodic Kerr microresonators

Recent developments of integrated photonic platforms have opened unique possibilities for on-chip generation of coherent and broadband frequency combs, both in normal and anomalous dispersion regimes via the generation of coherent nonlinear structures [1]. The potential role played by quasi-phase matching in dispersion engineering for this has remained an open question. As it happens, Si3N4 microresonator frequency combs typically employ waveguides with a large cross sections to reduce propagation loss and

IEEE2023

Quasi-categories vs. Segal spaces: Cartesian edition

Nima Rasekh

We prove that four different ways of defining Cartesian fibrations and the Cartesian model structure are all Quillen equivalent: 1.On marked simplicial sets (due to Lurie [31]), 2.On bisimplicial spaces (due to deBrito [12]), 3.On bisimplicial sets, 4.On m ...

2021

Distributed hydrostatic pressure measurement using phase OTDR in a highly birefringent photonic crystal fiber

Luc Thévenaz, Li Zhang

Although distributed fiber-optic sensing of axial strain and temperature is a well-established technique, there are almost no demonstrations of distributed hydrostatic pressure sensing. The main obstacle for such measurements is the low sensitivity to pres ...

IEEE Institute of Electrical and Electronics Engineers2019

Measurement of the B-+/- production cross-section in pp collisions at root s=7 and 13 TeV

Olivier Schneider, Aurelio Bay, Guido Haefeli, Christoph Frei, Frédéric Blanc, Tatsuya Nakada, Michel De Cian, Luca Pescatore, François Fleuret, Elena Graverini, Chitsanu Khurewathanakul, Renato Quagliani, Aravindhan Venkateswaran, Vitalii Lisovskyi, Jian Wang, Zhirui Xu, Yi Zhang, Lei Zhang, Jessica Prisciandaro, Mark Tobin, Minh Tâm Tran, Greig Alan Cowan, Maurizio Martinelli, Vladislav Balagura, Donal Patrick Hill, Liang Sun, Pietro Marino, Mirco Dorigo, Jean Wicht, Liupan An, Federico Leo Redi, Plamen Hristov Hopchev, Maxime Schubiger, Hang Yin, Guido Andreassi, Violaine Bellée, Olivier Göran Girard, Axel Kuonen, Preema Rennee Pais, Pavol Stefko, Maria Elena Stramaglia, Tommaso Colombo, Vladimir Macko

The production of B +/- mesons is studied in pp collisions at centre-of-mass energies of 7 and 13 TeV, using B-+/- -> J/psi K-+/- decays and data samples corresponding to 1.0 fb(-1) and 0.3 fb(-1), respectively. The production cross-sections summed over bo ...

Springer Nature2017

Equivariant K-theory of GKM bundles

Silvia Sabatini

Given a fiber bundle of GKM spaces, pi: M -> B, we analyze the structure of the equivariant K-ring of M as a module over the equivariant K-ring of B by translating the fiber bundle, pi, into a fiber bundle of GKM graphs and constructing, by combinatorial t ...

Springer Netherlands2013

Balanced Fiber Bundles and GKM Theory

Silvia Sabatini

Let T be a torus and B a compact T-manifold. Goresky et al. show in [3] that if B is (what was subsequently called) a GKM manifold, then there exists a simple combinatorial description of the equivariant cohomology ring H-T*(B) as a subring of H-T*(B-T). I ...

Oxford University Press2013

Quantitative Prediction Of Flow Patterns In Liquid-Liquid Flow In Micro-Capillaries

Lioubov Kiwi

Flow patterns in microstructured reactors (or microchannels) play an important role in dictating the mass transfer rates. In the present work, experiments were carried out to investigate the two phase (liquids) flow patterns in microchannels with different cross sections and contacting geometries. The pattern formation was analysed and conditions were classified in the three regions: surface tension dominated (slug flow), transition (slug-drop and deformed interface flow) and inertia dominated region (annul

Elsevier2011

On Singular Poisson Sternberg Spaces

We obtain a theory of stratified Sternberg spaces thereby extending the theory of cotangent bundle reduction for free actions to the singular case where the action on the base manifold consists of only one orbit type. We find that the symplectic reduced sp ...

2009

Speckle interferometry: A review of the principal methods in use for experimental mechanics applications

With its nearly 40 years of existence, speckle interferometry (SI) has become a complete technique, widely used in many branches of experimental mechanics. It is thus a challenging task to try to summarise in a couple of pages its principal characteristics ...

Wiley-Blackwell2008

Theoretical Aspects Associated with Charge-transfer Kinetics across Interfaces between Two Immiscible Electrolyte Solutions

Hubert Girault

The sections in this article are

Introduction and Scope
Heterogeneous Electron Transfer across ITIES
    Thermodynamic Aspects in Connection to Heterogeneous ET
    Electron-transfer Kinetics
        The Phenomenological Butler–Volmer Expression
        The Rate Constant of Electron Transfer
        The Solvent Reorganization Energy
        Potential Dependence of the Heterogeneous Electron-transfer Rate Constant
    Selected Experimental Results
Ion-transfer Reactio

Wiley2007

Laplacian Operator, Diffusion Flow and Active Contour on non-Euclidean Images

Jean-Philippe Thiran, Pierre Vandergheynst, Iva Bogdanova Vandergheynst

We propose here some basic approaches to direct processing of the

360^o

-images as we take into consideration the geometry of each one. Obviously, the geometry of each of these images is a consequence of the geometry of the sensor's mirror used. This technical report is organized as follows: In the first section we develop the Laplacian operator on non-Euclidean manifolds. First we start by derivation of Laplacian operator on Riemannian manifolds and than we derive it explicitly for each of the non-Euclide

2005

A novel all-fibre configuration for a flexible polarimetric current sensor

Luc Thévenaz, Dario Alasia

In this paper a polarimetric fibre-optics current sensor in a new highly versatile all-fibre configuration is described. The optical configuration is particularly simple and is based on a back-and-forth propagation through a twisted sensing fibre. This results in a very flexible sensing cable which can be adapted to a great number of existing power installations, by simply winding the fibre around the uninterrupted electrical conductor. The prototype presented here is designed to measure ac and dc currents

IOP Publishing2004

Sign of the state-to-state steric asymmetry of rotationally inelastic atom-molecule collisions

Marcel Drabbels

The sign of the theoretically predicted steric asymmetry S in rotational inelastic state resolved molecule–atom collisions is questioned. It is shown that the sign of the T-matrix obtained on a basis of non-oriented rotational states of the molecule depends on the choice of the Jacobi coordinates in which the collision problem is solved. Explicit expressions for the state-to-state dependence of the integral and differential cross-sections for oriented and non-oriented molecules are presented. The effect of

2004

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