Low-fidelity fabrication: Speeding up design iteration of 3D objects

Low-fidelity fabrication systems speed up rapid prototyping by printing intermediate versions of a prototype as fast, low-fidelity previews. Only the final version is fabricated as a full high-fidelity 3D print. This allows designers to iterate more quickly-achieving a better design in less time. Depending on what is currently being tested, low-fidelity fabrication is implemented in different ways: (1) faBrickator allows for a modular approach by substituting sub-volumes of the 3D model with building blocks. (2) WirePrint allows for quickly testing the shape of an object, such as the ergonomic fit, by printing wireframe structures. (3) Platener preserves the technical function by substituting 3D print with laser-cut plates of the same size and thickness. At our CHI'15 interactivity booth, we give a combined live demo of all three low-fidelity fabrication systems- putting special focus on our new low-fidelity fabrication system Platener (paper at CHI'15)

Création d’un réseau métier drones sensu-lato : pertinence, contours, intérêt ?

International audienc

Igneous rock powder identification using colour cameras: A powerful method for space exploration

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CaliPhoto : méthode simple d’aide à l’indentification et à la caractérisation de matériaux en laboratoire, sur le terrain et pour l’exploration planétaire

International audienc

CaliPhoto

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Charged defects during alpha-irradiation of actinide oxides as revealed by Raman and luminescence spectroscopy

International audienceWe have recently evidenced an original Raman signature of alpha irradiation-induced defects in UO2. In this study, we aim to determine whether the same signature also exists in different actinide oxides, namely ThO2 and PuO2. Sintered UO2 and ThO2 were initially irradiated with 21 MeV He2+ ions using a cyclotron device and were subjected to an in situ luminescence experiment followed by Raman analysis. In addition, a PuO2 sample that has previously accumulated self-irradiation damage due to alpha particles was investigated only by Raman measurement. Results obtained for the initially white ThO2 showed that a blue color appeared in the irradiated areas as well as luminescence signals during irradiation. However, Raman spectroscopic analysis showed the absence of Raman signature in ThO2. In contrast, the irradiated UO2 and PuO2 confirmed the presence of the Raman signature but no luminescence peaks were observed. These findings lead to propose a mechanism involving electronic defects in ThO2 while a coupling between electronic defects and phonons is needed to explain the Raman signal in UO2 and PuO2

Colorimetric analysis to help identification of drilled rock powders on Mars: the CaliPhoto method

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