Results 61 to 70 of about 334,043 (330)
All‐Dielectric Metasurface‐Based Gap Waveguides
Advanced Photonics Research, EarlyView.Dielectric metasurface‐based waveguides (metawavegides) offer several advantages over conventional waveguides, making them ideal for integrated photonics. A design of a metawaveguide composed of a pair of dielectric metasurfaces is proposed, where each metasurface behaves as a wall of either a perfect electric conductor or a perfect magnetic conductor,
Vladimir R. Tuz +4 more
wiley +1 more source
Journal of Rock Mechanics and Geotechnical Engineering, 2022 Particle morphology has great influence on mechanical behaviour and hydro/thermal/electrical conductivities of granular materials. Surface reconstruction and mesh generation are critical to consider realistic particle shapes in various computational ...
Deheng Wei, Budi Zhao, Yixiang Gan
doaj
Handing-over motion model based on analyses of hand motions and voice utterances of humans
Nihon Kikai Gakkai ronbunshu, 2014 In this paper, we propose a hand-over motion model based on analyses of hand motions and voice utterances of humans. This model generates a motion in which a robot hands over an object to a human accompanied by a voice greeting.
Mitsuru JINDAI +3 more
doaj +1 more source
Poka: A Necro‐Robot Beetle with a Measured Payload Ratio of 6847%
Advanced Robotics Research, EarlyView.Here, Poka, a necro‐robot beetle with the ability to carry more than 68 times its own weight, is introduced, making it also a walking robot with the highest payload ratio measured to date. This paper is concerned with the design, manufacture and validation of ‘Poka', a novel millimetre‐scale necro‐robot aimed at bridging the performance gap between ...
Yordan Tsvetkov, Parvez Alam
wiley +1 more source
Pre-stack elastic reverse time migration in tunnels based on cylindrical coordinates
Journal of Rock Mechanics and Geotechnical Engineering, 2022 Seismic forward-prospecting in tunnels is an important step to ensure excavation safety. Nowadays, most advanced imaging techniques in seismic exploration involve calculating the solution of elastic wave equation in a certain coordinate system.
Yuxiao Ren +4 more
doaj
In‐Hand Singulation, Scooping, and Cable Untangling with a 5‐Dof Tactile‐Reactive Gripper
Advanced Robotics Research, EarlyView.This article presents a two‐fingered gripper with five degrees of freedom and a vision‐based tactile sensor for dexterous in‐hand manipulation. It performs complex tasks such as object singulation within granular media, scooping and precise card insertion, and cable untangling.
Yuhao Zhou +3 more
wiley +1 more source
AIP Advances, 2022 On the time-average, the direction of the mixing layer midline remains essentially the same, with rich conclusions under the Cartesian coordinate system (CCS).
Letian Zhou, Wanwu Xu, Wei Ye
doaj +1 more source
Advanced Robotics Research, EarlyView.A low‐cost pipeline curvature detection method has been proposed for an untethered biped pipeline surface climbing robot (BPCR) system with a five‐degree‐of freedom structure. The BPCR features adaptive vacuum suction cups equipped with multiple laser sensors on the suction modules to detect the curvature of various surfaces.
Zikang Li +3 more
wiley +1 more source
Advanced Theory and Simulations, EarlyView.Computational fluid dynamics analyses assess the upstream locomotion performance of anisotropic microrollers with varying height‐to‐width ratios. Observing their successful upstream locomotion in veins, their performance in hepatic circulation is investigated for treating primary liver cancer.
Burak Arslan +8 more
wiley +1 more source
Fourth order superintegrable systems separating in Cartesian coordinates I. Exotic quantum potentials [PDF]
Journal of Physics A: Mathematical and Theoretical, 2017 A study is presented of two-dimensional superintegrable systems separating in Cartesian coordinates and allowing an integral of motion that is a fourth order polynomial in the momenta. All quantum mechanical potentials that do not satisfy any linear differential equation are found. They do however satisfy nonlinear ODEs.
Marquette, Ian +2 more
openaire +5 more sources