Nanowires(NWs)and self-assemble nanostructures made of chalcogenide semiconductor nanocrystals(NCs)are of great interests to the fundamental studies and practical applications.In this study,we reported a seeded-mediat...Nanowires(NWs)and self-assemble nanostructures made of chalcogenide semiconductor nanocrystals(NCs)are of great interests to the fundamental studies and practical applications.In this study,we reported a seeded-mediated growth of AgInS_(2)NWs and their intriguing self-assembly nanostructures with fingerprint-like shape.The key to the formation and self-assembly of AgInS_(2)NWs was the presence of In-S species that was a type of molecular metal chalcogenide complexes,serving as specific inorganic ligands for the growth of NWs and cross-linker molecules for the self-assembly of fingerprint-like nanostructures.Systematic studies were carried out to investigate the reaction factors,including the thermodynamics,amount and type of In precursors,and 1-dodecanethiol usage,to the success of the desired products.展开更多
The core capabilities of soft grippers/soft robotic hands are grasping and manipulation.At present,most related research often improves the grasping and manipulation performance by structural design.When soft grippers...The core capabilities of soft grippers/soft robotic hands are grasping and manipulation.At present,most related research often improves the grasping and manipulation performance by structural design.When soft grippers rely on compressive force and friction to achieve grasping,the influence of the surface microstructure is also significant.Three types of fingerprint-inspired textures with relatively regular patterns were prepared on a silicone rubber surface via mold casting by imitating the three basic shapes of fingerprint patterns(i.e.,whorls,loops,and arches).Tribological experiments and tip pinch tests were performed using fingerprint-like silicone rubber films rubbing against glass in dry and lubricated conditions to examine their performance.In addition to the textured surface,a smooth silicone rubber surface was used as a control.The results indicated that the coefficient of friction(COF)of the smooth surface was much higher than that of films with fingerprint-like textures in dry and water-lubricated conditions.The surface with fingerprint-inspired textures achieved a higher COF in oil-lubricated conditions.Adding the fingerprint-like films to the soft robotic fingers improved the tip pinch gripping performance of the soft robotic hand in lubricated conditions.This study demonstrated that the surface texture design provided an effective method for regulating the grasping capability of humanoid robotic hands.展开更多
基金supported by the National Natural Science Foundation of China(Nos.61735004 and 61974009)the Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission(No.NERE201903)。
文摘Nanowires(NWs)and self-assemble nanostructures made of chalcogenide semiconductor nanocrystals(NCs)are of great interests to the fundamental studies and practical applications.In this study,we reported a seeded-mediated growth of AgInS_(2)NWs and their intriguing self-assembly nanostructures with fingerprint-like shape.The key to the formation and self-assembly of AgInS_(2)NWs was the presence of In-S species that was a type of molecular metal chalcogenide complexes,serving as specific inorganic ligands for the growth of NWs and cross-linker molecules for the self-assembly of fingerprint-like nanostructures.Systematic studies were carried out to investigate the reaction factors,including the thermodynamics,amount and type of In precursors,and 1-dodecanethiol usage,to the success of the desired products.
基金supported by the Science Foundation of China University of Petroleum-Beijing(Nos.2462020XKJS01 and 2462020YXZZ046)National Key R&D Program of China(No.2017YFC0805800).
文摘The core capabilities of soft grippers/soft robotic hands are grasping and manipulation.At present,most related research often improves the grasping and manipulation performance by structural design.When soft grippers rely on compressive force and friction to achieve grasping,the influence of the surface microstructure is also significant.Three types of fingerprint-inspired textures with relatively regular patterns were prepared on a silicone rubber surface via mold casting by imitating the three basic shapes of fingerprint patterns(i.e.,whorls,loops,and arches).Tribological experiments and tip pinch tests were performed using fingerprint-like silicone rubber films rubbing against glass in dry and lubricated conditions to examine their performance.In addition to the textured surface,a smooth silicone rubber surface was used as a control.The results indicated that the coefficient of friction(COF)of the smooth surface was much higher than that of films with fingerprint-like textures in dry and water-lubricated conditions.The surface with fingerprint-inspired textures achieved a higher COF in oil-lubricated conditions.Adding the fingerprint-like films to the soft robotic fingers improved the tip pinch gripping performance of the soft robotic hand in lubricated conditions.This study demonstrated that the surface texture design provided an effective method for regulating the grasping capability of humanoid robotic hands.
