The Experts below are selected from a list of 246 Experts worldwide ranked by ideXlab platform

Kanty Rabenorosoa - One of the best experts on this subject based on the ideXlab platform.

  • Toward Conductive Polymer-Based Soft Milli-Robots for Vacuum Applications
    Frontiers in Robotics and AI, 2019
    Co-Authors: Amine Benouhiba, Patrick Rougeot, Morvan Ouisse, Cédric Clevy, Nicolas Andreff, Kanty Rabenorosoa
    Abstract:

    For the last two decades, the development of conducting polymers (CP) as artificial muscle by materials researchers and chemists has made it possible to establish a reliable and repeatable synthesis of such materials. CP-based milli-robots were essentially unknown in soft robotics, today presentations on them are increasing during robotics and smart materials forum. Indeed, this subclass of soft robots has reached an important moment in their history, exhibiting rather interesting features, based on established foundations in terms of modeling, control, sensing and planning in various Applications. The purpose of this paper is to present the potential of conductive polymers-based soft milli-robots as high performance devices for Vacuum Applications. To that end, a tri-layered Polypyrrole-based actuator was first used inside a scanning electron microscope (SEM), characterized for different applied voltages and during a relatively long period time. Additionally, the tip positioning of the cantilever was also controlled using a closed-loop control. Furthermore, as a proof of concept for more complex soft milli-robot, an S-shaped soft milli-robot was model, using a hybrid model composed of two models a multi-physics model and a kenimatics model. It was then fabricated using laser machining, and finally characterized using its tip displacements. Polypyrrole-based soft milli-robots proved to have tremendous potential as high performance soft robots at microscale for wide range of Applications, including SEM micro-manipulation as well as biomedical Applications.

  • Toward Conductive Polymer-Based Soft Milli-Robots for Vacuum Applications
    Frontiers in Robotics and AI, 2019
    Co-Authors: Amine Benouhiba, Patrick Rougeot, Morvan Ouisse, Cédric Clevy, Nicolas Andreff, Kanty Rabenorosoa
    Abstract:

    For the last two decades, the development of conducting polymers (CP) as artificial muscles, by materials researchers and chemists, has made establishing a reliable and repeatable synthesis of such materials possible. CP-based milli-robots were mostly unknown in soft robotics, however, today, they play a vital role in robotics and smart materials forums. Indeed, this subclass of soft robots has reached a crucial moment in their history, a moment where they can display rather interesting features, based on established foundations in terms of modeling, control, sensing, and planning in various Applications. The purpose of this paper is to present the potential of conductive polymer-based soft milli-robots as high-performance devices for Vacuum Applications. To that end, a trilayer polypyrrole-based actuator was first used inside a scanning electron microscope (SEM), characterized for different applied voltages, over a relatively long period. Additionally, the tip positioning of the cantilever was also controlled using a closed-loop control. Furthermore, as a proof of concept for more complex soft milli-robots, an S-shaped soft milli-robot was modeled, using a hybrid model comprised of two models; a multi-physics model and a kinematic model. It was then fabricated using laser machining and finally characterized using its tip displacement. polypyrrole-based soft milli-robots proved to have tremendous potential as high-performance soft robots at the microscale for a wide range of Applications, including SEM micro-manipulation as well as biomedical Applications.

  • Toward Conductive Polymer-Based Soft Milli-Robots for Vacuum Applications
    Frontiers in Robotics and AI, 2019
    Co-Authors: Amine Benouhiba, Patrick Rougeot, Morvan Ouisse, Cédric Clevy, Nicolas Andreff, Kanty Rabenorosoa
    Abstract:

    For the last two decades, the development of conducting polymers (CP) as artificial muscles, by materials researchers and chemists, has made establishing a reliable and repeatable synthesis of such materials possible. CP-based milli-robots were mostly unknown in soft robotics, however, today, they play a vital role in robotics and smart materials forums. Indeed, this subclass of soft robots has reached a crucial moment in their history, a moment where they can display rather interesting features, based on established foundations in terms of modeling, control, sensing, and planning in various Applications. The purpose of this paper is to present the potential of conductive polymer-based soft milli-robots as high-performance devices for Vacuum Applications. To that end, a trilayer polypyrrole-based actuator was first used inside a scanning electron microscope (SEM), characterized for different applied voltages, over a relatively long period. Additionally, the tip positioning of the cantilever was also controlled using a closed-loop control. Furthermore, as a proof of concept for more complex soft milli-robots, an S-shaped soft milli-robot was modeled, using a hybrid model comprised of two models; a multi-physics model and a kinematic model. It was then fabricated using laser machining and finally characterized using its tip displacement. polypyrrole-based soft milli-robots proved to have tremendous potential as high-performance soft robots at the microscale for a wide range of Applications, including SEM micro-manipulation as well as biomedical Applications.

L Muntada - One of the best experts on this subject based on the ideXlab platform.

  • screening of diamond like carbon coatings in search of a prospective solid lubricant suitable for both atmosphere and high Vacuum Applications
    Tribology International, 2017
    Co-Authors: A Igartua, E Berriozabal, Roman Nevshupa, E Roman, Francesco Pagano, Pleth L Nielsen, Sascha Louring, L Muntada
    Abstract:

    Abstract The tribological performance of three types of amorphous carbon coatings was screened in search of potential candidates for solid lubricants suitable for working under both atmospheric and Vacuum conditions. A coating obtained through ion assisted condensation of silicon oil vapours behaved well under atmosphere but failed in Vacuum. Two types of hydrogenated amorphous carbon coatings, with and without Si doping, obtained by physical vapour deposition showed good performance in Vacuum reaching superlow friction. The Si-doped amorphous carbon coatings were likewise good under atmospheric conditions with the coefficient of friction ranged between 0.1 and 0.15. The degradation of the coatings under Vacuum was further studied using Mechanically Stimulated Gas Emission Mass-Spectrometry and Fourier-Transformed Infra-Red Spectrometry.

Amine Benouhiba - One of the best experts on this subject based on the ideXlab platform.

  • Toward Conductive Polymer-Based Soft Milli-Robots for Vacuum Applications
    Frontiers in Robotics and AI, 2019
    Co-Authors: Amine Benouhiba, Patrick Rougeot, Morvan Ouisse, Cédric Clevy, Nicolas Andreff, Kanty Rabenorosoa
    Abstract:

    For the last two decades, the development of conducting polymers (CP) as artificial muscle by materials researchers and chemists has made it possible to establish a reliable and repeatable synthesis of such materials. CP-based milli-robots were essentially unknown in soft robotics, today presentations on them are increasing during robotics and smart materials forum. Indeed, this subclass of soft robots has reached an important moment in their history, exhibiting rather interesting features, based on established foundations in terms of modeling, control, sensing and planning in various Applications. The purpose of this paper is to present the potential of conductive polymers-based soft milli-robots as high performance devices for Vacuum Applications. To that end, a tri-layered Polypyrrole-based actuator was first used inside a scanning electron microscope (SEM), characterized for different applied voltages and during a relatively long period time. Additionally, the tip positioning of the cantilever was also controlled using a closed-loop control. Furthermore, as a proof of concept for more complex soft milli-robot, an S-shaped soft milli-robot was model, using a hybrid model composed of two models a multi-physics model and a kenimatics model. It was then fabricated using laser machining, and finally characterized using its tip displacements. Polypyrrole-based soft milli-robots proved to have tremendous potential as high performance soft robots at microscale for wide range of Applications, including SEM micro-manipulation as well as biomedical Applications.

  • Toward Conductive Polymer-Based Soft Milli-Robots for Vacuum Applications
    Frontiers in Robotics and AI, 2019
    Co-Authors: Amine Benouhiba, Patrick Rougeot, Morvan Ouisse, Cédric Clevy, Nicolas Andreff, Kanty Rabenorosoa
    Abstract:

    For the last two decades, the development of conducting polymers (CP) as artificial muscles, by materials researchers and chemists, has made establishing a reliable and repeatable synthesis of such materials possible. CP-based milli-robots were mostly unknown in soft robotics, however, today, they play a vital role in robotics and smart materials forums. Indeed, this subclass of soft robots has reached a crucial moment in their history, a moment where they can display rather interesting features, based on established foundations in terms of modeling, control, sensing, and planning in various Applications. The purpose of this paper is to present the potential of conductive polymer-based soft milli-robots as high-performance devices for Vacuum Applications. To that end, a trilayer polypyrrole-based actuator was first used inside a scanning electron microscope (SEM), characterized for different applied voltages, over a relatively long period. Additionally, the tip positioning of the cantilever was also controlled using a closed-loop control. Furthermore, as a proof of concept for more complex soft milli-robots, an S-shaped soft milli-robot was modeled, using a hybrid model comprised of two models; a multi-physics model and a kinematic model. It was then fabricated using laser machining and finally characterized using its tip displacement. polypyrrole-based soft milli-robots proved to have tremendous potential as high-performance soft robots at the microscale for a wide range of Applications, including SEM micro-manipulation as well as biomedical Applications.

  • Toward Conductive Polymer-Based Soft Milli-Robots for Vacuum Applications
    Frontiers in Robotics and AI, 2019
    Co-Authors: Amine Benouhiba, Patrick Rougeot, Morvan Ouisse, Cédric Clevy, Nicolas Andreff, Kanty Rabenorosoa
    Abstract:

    For the last two decades, the development of conducting polymers (CP) as artificial muscles, by materials researchers and chemists, has made establishing a reliable and repeatable synthesis of such materials possible. CP-based milli-robots were mostly unknown in soft robotics, however, today, they play a vital role in robotics and smart materials forums. Indeed, this subclass of soft robots has reached a crucial moment in their history, a moment where they can display rather interesting features, based on established foundations in terms of modeling, control, sensing, and planning in various Applications. The purpose of this paper is to present the potential of conductive polymer-based soft milli-robots as high-performance devices for Vacuum Applications. To that end, a trilayer polypyrrole-based actuator was first used inside a scanning electron microscope (SEM), characterized for different applied voltages, over a relatively long period. Additionally, the tip positioning of the cantilever was also controlled using a closed-loop control. Furthermore, as a proof of concept for more complex soft milli-robots, an S-shaped soft milli-robot was modeled, using a hybrid model comprised of two models; a multi-physics model and a kinematic model. It was then fabricated using laser machining and finally characterized using its tip displacement. polypyrrole-based soft milli-robots proved to have tremendous potential as high-performance soft robots at the microscale for a wide range of Applications, including SEM micro-manipulation as well as biomedical Applications.

A Igartua - One of the best experts on this subject based on the ideXlab platform.

  • screening of diamond like carbon coatings in search of a prospective solid lubricant suitable for both atmosphere and high Vacuum Applications
    Tribology International, 2017
    Co-Authors: A Igartua, E Berriozabal, Roman Nevshupa, E Roman, Francesco Pagano, Pleth L Nielsen, Sascha Louring, L Muntada
    Abstract:

    Abstract The tribological performance of three types of amorphous carbon coatings was screened in search of potential candidates for solid lubricants suitable for working under both atmospheric and Vacuum conditions. A coating obtained through ion assisted condensation of silicon oil vapours behaved well under atmosphere but failed in Vacuum. Two types of hydrogenated amorphous carbon coatings, with and without Si doping, obtained by physical vapour deposition showed good performance in Vacuum reaching superlow friction. The Si-doped amorphous carbon coatings were likewise good under atmospheric conditions with the coefficient of friction ranged between 0.1 and 0.15. The degradation of the coatings under Vacuum was further studied using Mechanically Stimulated Gas Emission Mass-Spectrometry and Fourier-Transformed Infra-Red Spectrometry.

Erez Hasman - One of the best experts on this subject based on the ideXlab platform.

  • Acrobatics for thermal emission using metastructures
    Proceedings of SPIE, 2012
    Co-Authors: Vladimir Kleiner, Nir Dahan, Kobi Frischwasser, Erez Hasman
    Abstract:

    In high temperature and Vacuum Applications, for which heat transfer is predominantly by radiation, the material's surface texture is of substantial importance. Control of thermal emission is of crucial concern in the design of infrared sources, in electronic chip coolants, in high-efficiency photovoltaic cells, and in solar energy conversion. Thermal emission has been shown to be modified by utilizing the high density of states of surface waves (surface plasmon polaritons and surface phonon polaritons) and their long-range propagation. We present subwavelength structures - metastructures supporting surface waves for obtaining polarization manipulation of thermal emission, extraordinary coherent thermal radiation, bandgap in the spectral emission, and a broadband infrared absorption. A spin-dependent dispersion splitting was obtained in a structure consisting of a coupled thermal antenna array. The effect is due to a spinorbit interaction resulting from the dynamics of the surface waves propagating along the structure whose local anisotropy axis is rotated in space. The dispersion splitting due to the spin-orbit coupling is also known as the key feature in such remarkable effects as the Rashba splitting and the spin-Hall effect, which indicates the generic nature of the discussed phenomenon. The observation of the spin-symmetry breaking in thermal radiation paves the way to manipulate spontaneous emission with the photons' intrinsic degree of freedom and provides the basis for future spinoptics devices.

  • Manipulation of Thermal Emission by Use of Micro and Nanoscale Structures
    Journal of Heat Transfer-transactions of The Asme, 2012
    Co-Authors: Erez Hasman, Nir Dahan, Kobi Frischwasser, Yuri Gorodetski, Vladimir Kleiner, Igal Balin
    Abstract:

    In high temperature and Vacuum Applications, for which heat transfer is predominantly by radiation, the material’s surface texture is of substantial importance. Several micro and nanostructures designs have been proposed to enhance a material’s emissivity and its radiative coherence. Control of thermal emission is of crucial concern in the design of infrared sources, in electronic chip coolants, in high-efficiency photovoltaic cells, and in solar energy conversion. In this review paper, we present microscale and nanoscale structures supporting surface waves for obtaining polarization manipulation of thermal emission, extraordinary coherent thermal radiation, bandgap in the spectral emission, spin symmetry breaking of coupled thermal antenna array, and a broadband infrared absorption.