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Concept

Toupie (jouet)

Publications associées (11)

Motile dislocations knead odd crystals into whorls

Sofia Magkiriadou

The competition between thermal fluctuations and potential forces governs the stability of matter in equilibrium, in particular the proliferation and annihilation of topological defects. However, driving matter out of equilibrium allows for a new class of ...

NATURE PORTFOLIO2022

Mitigating tip vortex cavitation by a flexible trailing thread

Mohamed Farhat, Ali Amini

Tip Vortex Cavitation (TVC) is a major issue in design and operation of axial hydraulic machines. We investigate the capacity of a flexible trailing thread in alleviating TVC by analyzing the flow-induced motion. For this purpose, a nylon thread with three ...

AMER INST PHYSICS2019

Large-Amplitude Spin Dynamics Driven by a THz Pulse in Resonance with an Electromagnon

Christoph Peter Hauri

Multiferroics have attracted strong interest for potential applications where electric fields control magnetic order. The ultimate speed of control via magnetoelectric coupling, however, remains largely unexplored. Here, we report an experiment in which we ...

American Association for the Advancement of Science2014

Optical force sensing element and microsurgical instrument

Simon Nessim Henein

The present invention related to an optical force sensing element for microsurgical instruments (22), for measuring force F in three orthogonal directions x, y, z, comprising a monolithic cylinder structure (1), a cylindrical surface (4) and a top surface ...

Sensoptic SA Losone2013

Broadband excitation in solid-state NMR using interleaved DANTE pulse trains with N pulses per rotor period

Geoffrey Bodenhausen, Diego Carnevale, Simone Ulzega

We analyze the direct excitation of wide one-dimensional spectra of nuclei with spin I = 1/2 or 1 in rotating solids submitted to pulse trains in the manner of Delays Alternating with Nutations for Tailored Excitation (DANTE), either with one short rotor-s ...

Academic Press Inc - Elsevier Science2013

Current-induced domain wall motion in nanoscale ferromagnetic elements

We review the details of domain wall (DW) propagation due to spin-polarized currents that could potentially be used in magnetic data storage devices based on domains and DWs. We discuss briefly the basics of the underlying spin torque effect and show how t ...

2011

Thermal Spin Transfer Torque and Transverse Spin Relaxation in Spin Valves

Haiming Yu

Spin caloritronics, i.e., the addition of thermal effects to the electrical and magnetic properties of nanostructures, has recently seen a rapid development. It has been predicted that a heat current can exert a spin torque on the magnetization in a nanost ...

EPFL2011

Augmented White Cane with Multimodal Haptic Feedback

Hannes Bleuler, Roger Gassert, Dominique Chapuis, Simon Gallo, Laura Santos Carreras

This paper proposes an instrumented handle with multimodal augmented haptic feedback, which can be integrated into a conventional white cane to extend the haptic exploration range of visually impaired users. The information extracted from the environment t ...

IEEE2010

Lithography-free study of spin torque

Jean-Philippe Ansermet, Elena Murè

We developed a non-lithographic technique to contact sub-100 nm nanowires for spin transfer torque experiments. Co/Cu multilayers were grown by electrodeposition in nanoporous commercial polycarbonate membranes from a Co/Cu bath. A home-made sample holder ...

Elsevier2010

Emergent semantics : rethinking interoperability for large scale decentralized information systems

Philippe Cudré-Mauroux

In the past, the problem of semantic interoperability in information systems was mostly solved by means of centralization, both at a system and at a logical level. This approach has been successful to a certain extent, but offers limited scalability and fl ...

EPFL2007

Minigap in a SN junction with paramagnetic impurities

Benoît Crouzy, Dmitri Ivanov

We study the effect of spin-flip scattering on the density of states in a long diffusive S-N junction with transparent interface. We calculate the critical value of the spin-flip scattering rate at which the minigap closes and give the dependence of the mi ...

2005