23 papers · ranked by Valyu relevance
Andrea Zangrandi, Marco D’Alonzo, Christian Cipriani, Giovanni Di Pino
'Giovanni Di Pino'] Sensory feedback is pivotal for a proficient dexterity of the hand. By modulating the grip force in function of the quick and not completely predictable change of the load force, grabbed objects are prevented to slip from the hand. Slippage control is an enabling achievement to all manipulation…
Peter Lebedev-Stepanov
An analytical solution is obtained for the problem of the slow movement of a small drop of a fluid in another immiscible fluid in an infinitely large reservoir with the boundary condition of the normal slip and/or tangential partial slip at the interface. That generalizes the conventional Navier and Maxwellian boundary…
Allan Barrea, Benoit P. Delhaye, Philippe Lefèvre, Jean-Louis Thonnard
'Jean-Louis Thonnard'] During tactile exploration, partial slips occur systematically at the periphery of fingertip-object contact prior to full slip. Although the mechanics of partial slips are well characterized, the perception of such events is unclear. Here, we performed psychophysical experiments to assess partial…
Hendrik N. Andresen, D.A. Hills, J. R. Barber, Jesús Vázquez
A new solution for a general half-plane contact in the steady state is presented. The contacting bodies are subject to a set of constant loads - normal force, shear force and bulk tension parallel with the interface - together with an oscillatory set of the same quantities. Partial slip conditions are expected to ensue…
Xiaowen Hu, Yushan Ni, Zhongli Zhang
In order to study the effects of kink-like defects in twin boundaries on deformation mechanisms and interaction between dislocations and defects in twin boundaries under localized load, nanotwinned Cu with two defective twin (TDT) boundaries is compared with the nanotwinned Cu with two perfect twin (TPT) boundaries…
Daniela Moreno-Chaparro, Florencio Balboa Usabiaga, Nicolas Moreno, Marco Ellero
'Marco Ellero'] Fluid-structure interactions are commonly modeled using no-slip boundary conditions. However, small deviations from these conditions can significantly alter the dynamics of suspensions and particles, especially at the micro and nano scales. This work presents a robust implicit numerical method for…
Palaiah A. P, Nagaraj N. Katagi, Ashwini Bhat, Manjunath Shettar
This study examines the linear stability of two-dimensional incompressible viscous flow through a parallel channel embedded in a porous medium under the influence of a transverse magnetic field and various slip boundary conditions. Employing the Brinkman model, the analysis integrates Navier-slip boundary formulations…
Kiyanoush Nazari, Willow Mandil, Marco Santello, Amir Ghalamzan
Ensuring a stable grasp during manipulative movements is crucial for robotic applications. While grip force has been the primary means of slip control, our human study revealed that trajectory modulation is also an effective slip control policy during pick-and-place tasks. Motivated by these findings, we developed and…
Sophie du Bois de Dunilac, David Córdova Bulens, Philippe Lefèvre, Stephen J. Redmond + 1 more
Surface skin deformation of the finger pad during partial slippage at finger-object interfaces elicits tactile feedback. During object manipulation, torque is often present, which can cause partial slippage. Until now, studies of surface skin deformation have used stimuli sliding on rectilinear tangential trajectories.…
Carlos R. Hernandez-Castillo, Rodrigo S. Maeda, J. Andrew Pruszynski, Jörn Diedrichsen
Humans have the remarkable ability to hold, grasp, and manipulate objects. Previous work has reported rapid and coordinated reactions in hand and shoulder muscles in response to external perturbations to the arm during object manipulation; however, little is known about how somatosensory feedback of an object slipping…
Authors not listed
The recent discovery of the self-healing capabilities of molecular crystals has shown significant efficiency, approaching nearly 100%, particularly when this process is coupled with a phase transition. This places these materials on par with other, better-studied soft materials, such as polymers. However, the physical…
Kiyanoush Nazari, Willow Mandil, Amir Ghalamzan E
This paper presents a novel control approach to dealing with object slip during robotic manipulative movements. Slip is a major cause of failure in many robotic grasping and manipulation tasks. Existing works increase grip force to avoid/control slip. However, this may not be feasible when (i) the robot cannot increase…
K. Ranjith
Several interfacial wave solutions are known in elasticity theory. In anti-plane elasticity, the Love wave (Love, 1911) exists in bonded contact of an elastic layer with a dissimilar elastic half-space. In in-plane elasticity, the slip wave (Achenbach and Epstein, 1967) and Stoneley wave (Stoneley, 1924) solutions are…
Jonathan S. Lee-Confer
Slip and fall incidents are a serious health care concern globally. Previous research describes a backwards loss of balance during a slip incident, however hip fractures only occur if individuals fall on their side. Therefore, this study is investigating and quantifying the trunk motion in the sagittal and frontal…
Xinyue Wen, Tobias Foller, Xiaoheng Jin, Tiziana Musso + 2 more
The water transport along graphene-based nanochannels has gained significant interest. However, experimental access to the influence of defects and impurities on transport poses a critical knowledge gap. Here, we investigate the water transport of cation intercalated graphene oxide membranes. The cations act as…
Sebastian Zimmermann, Clarissa Schönecker
Analytical expressions for the velocity field and the effective slip length of pressure-driven Stokes flow through slippery pipes and annuli with rotationally symmetrical longitudinal slits are derived. Specifically, the developed models incorporate a finite local slip length or shear stress along the slits and thus go…
Corbin M. Rasmussen, Carolin Curtze, Mukul Mukherjee, Nathaniel H. Hunt
'Nathaniel H. Hunt'] Curvilinear walking is common, causing limb- and radius-dependent asymmetries that distinguish it from straight walking and elevated friction demands that increase slip-and-fall risk. However, it is unclear how aspects of curvilinear walking influence the slip perturbations experienced. We…
Xinyue Wen, Tobias Foller, Xiaoheng Jin, Tiziana Musso + 2 more
The water transport along graphene-based nanochannels has gained significant interest. However, experimental access to the influence of defects and impurities on transport poses a critical knowledge gap. Here, we investigate the water transport of cation intercalated graphene oxide membranes. The cations act as…
Authors not listed
Optimising the tape casting process for fabricating NiO/YSZ cermet-based fuel-electrode supports in Solid Oxide Cells remains a resource-intensive challenge. Improving the green tape properties is often reliant on trial-and-error procedures or proprietary knowledge that is inaccessible to the broader scientific…
Ayesha Tooba Khan, Deepak Joshi, Biswarup Mukherjee
Methods: We developed a novel slip induction device to simulate the artificial sense of slip. We conducted a psychophysical experiment on eight healthy subjects. The experiment was designed to evaluate the effect of slip direction on slip perception as well as on the perception of slip distance and slip speed. A series…
Jonathan Lee-Confer, Dorie Chen, Karen Troy
Slip-induced falls are a major contributor to hip fractures and injury, particularly during sideways falls where lateral trunk flexion drives impact to the hip. While past studies have focused on sagittal-plane slip mechanics, the mechanisms of inducing frontal-plane trunk excursion remain poorly understood. This study…
Jian Zhang, Shihua Zhang, Yong Ding, David Z. Zhu
Site investigation, deformation monitoring, laboratory test, and theoretical calculations were used to analyze the evolution details of a large expressway roadside landslide during the start-up sliding process. The monitoring results show that the initial deformation and failure occurred on the protective wall at the…
Authors not listed
Covalently tethering chromophores is an emerging strategy to control the structure and function of supramolecular aggregates for organic electronic applications. In this study, we employ first principle calculations to elucidate structure-property relationships in three perylene diimide (PDI) trimer systems: a…