Sylvain Bouchigny

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Laser induced convection flows is a new and promising method to achieve better manipulation of mesoscale objects (above 1 mum and below 500 mum) in a liquid medium. The temperature gradient created by laser absorption generates natural and thermocapillary (or Marangoni) convection flows. These flows are used to perform the manipulation itself. In this(More)
Multimodal VR training platforms appear as a very promising complement to traditional learning methods for the transfer of skills. The environment is fully controlled and the content of the application, as well as the feedbacks, can be tuned to the performances and progress of the user. The efficiency of this approach depends however on the ability to(More)
OBJECTIVE In this study, we explored the time course of haptic stiffness discrimination learning and how it was affected by two experimental factors, the addition of visual information and/or knowledge of results (KR) during training. BACKGROUND Stiffness perception may integrate both haptic and visual modalities. However, in many tasks, the visual field(More)
The paper describes the requirements specification process involved in the design of a Virtual Reality trainer for Epker maxillo-facial surgery. This surgery is considered as very delicate and difficult to teach. Vision guided movements are very limited and haptic sense is largely used. The user-centered methodology and the first experiments designed to(More)
The beam-spin asymmetries in the hard exclusive electroproduction of photons on the proton (e p-->epgamma) were measured over a wide kinematic range and with high statistical accuracy. These asymmetries result from the interference of the Bethe-Heitler process and of deeply virtual Compton scattering. Over the whole kinematic range (x(B) from 0.11 to 0.58,(More)
The photoproduction of the ! meson has been studied at GRAAL from threshold up to a photon energy of 1.5 GeV. The differential cross sections and beam asymmetries have been measured precisely at all angles. The total cross section is also obtained. Systematic enhancements of the differential cross section at large angles and nonzero beam asymmetries at(More)