This research paper introduces a soft VR glove that enhances how users interact with virtual objects. It seamlessly integrates discrete modules for sensing and providing haptic feedback, encompassing tactile and kinae...This research paper introduces a soft VR glove that enhances how users interact with virtual objects. It seamlessly integrates discrete modules for sensing and providing haptic feedback, encompassing tactile and kinaesthetic aspects while prioritizing wearability and natural finger movements. The glove employs custom-designed flexible bend sensors with carbon-impregnated film for in-situ joint angle tracking, simplifying the sensing system and enhancing portability. A multi-modal haptic feedback approach includes an innovative pneumatically actuated tactile feedback technique and a motor-tendon-driven kinaesthetic feedback system, providing exceptional realism in virtual object manipulation. The glove’s kinaesthetic feedback lets users perceive virtual objects’ size, shape, and stiffness characteristics. Psychophysical investigations demonstrate how readily the users acclimate to this hardware and prove each module’s effectiveness and synergistic operation. This soft VR glove represents a minimalist, lightweight, and comprehensive solution for authentic haptic interaction in virtual environments, opening new possibilities for applications in various fields.展开更多
Fluid injection in fractured rocks presents significant challenges requiring the integration of various elements to account for reservoir property heterogeneities.To understand magnitude of potential seismic risks res...Fluid injection in fractured rocks presents significant challenges requiring the integration of various elements to account for reservoir property heterogeneities.To understand magnitude of potential seismic risks resulting from CO_(2) injection in naturally fractured sand reservoirs in the study location,we devised a simulation model which utilizes a coupled thermo-hydro-mechanical(THM)approach,encompassing different injection scenarios and reservoir injection systems.The model effectively cap-tures the complex interplay between geological features and fault failure processes.Furthermore,we examined the mechanical response of the caprock under constant injection rates by analyzing the evolution of shear stress and its impact on permeability enhancement.Our findings reveal that the pressurization effect of fluid and stress alterations trigger significant fault rupture,leading to seismic events of varying magnitudes.The extent of seismic activity hinges on the reservoir's initial state,the properties of the overlying caprock,and the injected volume.Moreover,we discovered that deformations within the caprock layer are most pronounced near fault zones,gradually diminishing with distance from these zones.Notably,the degree of permeability modification in the caprock is linked to the magnitude of shear stress.Additionally,our research corroborated that higher injection rates markedly accelerate fault slip,albeit with minimal impact on the extent of permeability enhancement.However,we noted a non-linear relationship between seismic activity and fluid injection rates,suggesting that the magnitude of seismic consequences is contingent upon the temporal analysis of various parameters.These significant findings offer valuable insights into understanding the intricate processes associated with subsurface injection,which often manifest in phenomena such as fault ruptures and induced seismicity.展开更多
基金CSIR research grant HCP-26 supported the work reported in this article.
文摘This research paper introduces a soft VR glove that enhances how users interact with virtual objects. It seamlessly integrates discrete modules for sensing and providing haptic feedback, encompassing tactile and kinaesthetic aspects while prioritizing wearability and natural finger movements. The glove employs custom-designed flexible bend sensors with carbon-impregnated film for in-situ joint angle tracking, simplifying the sensing system and enhancing portability. A multi-modal haptic feedback approach includes an innovative pneumatically actuated tactile feedback technique and a motor-tendon-driven kinaesthetic feedback system, providing exceptional realism in virtual object manipulation. The glove’s kinaesthetic feedback lets users perceive virtual objects’ size, shape, and stiffness characteristics. Psychophysical investigations demonstrate how readily the users acclimate to this hardware and prove each module’s effectiveness and synergistic operation. This soft VR glove represents a minimalist, lightweight, and comprehensive solution for authentic haptic interaction in virtual environments, opening new possibilities for applications in various fields.
文摘Fluid injection in fractured rocks presents significant challenges requiring the integration of various elements to account for reservoir property heterogeneities.To understand magnitude of potential seismic risks resulting from CO_(2) injection in naturally fractured sand reservoirs in the study location,we devised a simulation model which utilizes a coupled thermo-hydro-mechanical(THM)approach,encompassing different injection scenarios and reservoir injection systems.The model effectively cap-tures the complex interplay between geological features and fault failure processes.Furthermore,we examined the mechanical response of the caprock under constant injection rates by analyzing the evolution of shear stress and its impact on permeability enhancement.Our findings reveal that the pressurization effect of fluid and stress alterations trigger significant fault rupture,leading to seismic events of varying magnitudes.The extent of seismic activity hinges on the reservoir's initial state,the properties of the overlying caprock,and the injected volume.Moreover,we discovered that deformations within the caprock layer are most pronounced near fault zones,gradually diminishing with distance from these zones.Notably,the degree of permeability modification in the caprock is linked to the magnitude of shear stress.Additionally,our research corroborated that higher injection rates markedly accelerate fault slip,albeit with minimal impact on the extent of permeability enhancement.However,we noted a non-linear relationship between seismic activity and fluid injection rates,suggesting that the magnitude of seismic consequences is contingent upon the temporal analysis of various parameters.These significant findings offer valuable insights into understanding the intricate processes associated with subsurface injection,which often manifest in phenomena such as fault ruptures and induced seismicity.
