The development of bioinspired gradient hydrogels with self-sensing actuated capabilities for remote interaction with soft-hard robots remains a challenging endeavor. Here, we propose a novel multifunctional self-sens...The development of bioinspired gradient hydrogels with self-sensing actuated capabilities for remote interaction with soft-hard robots remains a challenging endeavor. Here, we propose a novel multifunctional self-sensing actuated gradient hydrogel that combines ultrafast actuation and high sensitivity for remote interaction with robotic hand. The gradient network structure, achieved through a wettability difference method involving the rapid precipitation of MoO_(2) nanosheets, introduces hydrophilic disparities between two sides within hydrogel. This distinctive approach bestows the hydrogel with ultrafast thermo-responsive actuation(21° s^(-1)) and enhanced photothermal efficiency(increase by 3.7 ℃ s^(-1) under 808 nm near-infrared). Moreover, the local cross-linking of sodium alginate with Ca^(2+) endows the hydrogel with programmable deformability and information display capabilities. Additionally, the hydrogel exhibits high sensitivity(gauge factor 3.94 within a wide strain range of 600%), fast response times(140 ms) and good cycling stability. Leveraging these exceptional properties, we incorporate the hydrogel into various soft actuators, including soft gripper, artificial iris, and bioinspired jellyfish, as well as wearable electronics capable of precise human motion and physiological signal detection. Furthermore, through the synergistic combination of remarkable actuation and sensitivity, we realize a self-sensing touch bioinspired tongue. Notably, by employing quantitative analysis of actuation-sensing, we realize remote interaction between soft-hard robot via the Internet of Things. The multifunctional self-sensing actuated gradient hydrogel presented in this study provides a new insight for advanced somatosensory materials, self-feedback intelligent soft robots and human–machine interactions.展开更多
Mechanoluminescence(ML)is bringing a paradigm-shifting for next-generation lightbased human–robot interaction.However,the overlooked character of ML temporal dynamic response remains a critical barrier to overcoming ...Mechanoluminescence(ML)is bringing a paradigm-shifting for next-generation lightbased human–robot interaction.However,the overlooked character of ML temporal dynamic response remains a critical barrier to overcoming the limitation of mechanooptical conversion efficiency.Here,by resolving the dynamic interplay among stimuli rate,interfacial charge accumulation and ML performance of three typical materials,like ZnS:Cu^(2+),SrAl_(2)O_(4):Eu^(2+),Dy^(3+),Y_(3)Al_(5)O_(12):Ce^(3+),the cognition of ML has been deeply understand.Obviously,the ML performance is predominantly governed by the crosscoupling of stimuli rate and stimuli time rather than absolute stress magnitude.For the first time,the optimal stretching stimulation rate for commercial ZnS:Cu^(2+),SrAl_(2)O_(4):Eu^(2+),Dy^(3+)and Y_(3)Al_(5)O_(12):Ce^(3+)are respectively determined as~10.3 Mpa/s,~11.0 Mpa/s,~31.9 Mpa/s,which is of great significance for obtaining high-performance ML behavior,and an ubiquitous ML hysteresis phenomenon is demonstrated originating from a time-consuming mechano-electro-optical conversion process even existing in trap-controlled SrAl_(2)O_(4):Eu^(2+),Dy^(3+).Moreover,a qualitative relationship for ML brightness(MLB),stimuli rate(sr),stimuli time(st),inherent interfacial triboelectricity coefficient(iitre)and relative interfacial triboelectricity coefficient(ritre)is established as ML B=f(sr)*g(st)*p(iitre)*q(ritre)for guiding the design of ML elastomers.For instance,based on this equation,a topology-optimized Y_(3)Al_(5)O_(12):Ce^(3+)@polydimethylsiloxane(PDMS)elastomer is engineered,achieving unprecedented 693 times brighter emission,78%lower stress threshold and 20%lighter weight,which is successfully applied in remote control(~450 m)of quadruped robot.Three main contributions of this work include:(i)demonstrating the influence law of temporal dynamic stimulation on ML performance.(ii)resolving long-standing mechano-optical asynchrony debates.(iii)establishing a universal guideline for designing high-performance ML platforms.展开更多
The house rental issue is one of the elemental parts of society. Nowadays, it is extremely difficult to find suitable accommodation in city areas if people search for it physically. On the other hand, the land owner a...The house rental issue is one of the elemental parts of society. Nowadays, it is extremely difficult to find suitable accommodation in city areas if people search for it physically. On the other hand, the land owner also needs to rent the house. It can be difficult to find tenants just to hang a lease sign on a building, and as a result, they lose money. An online common platform can play a vital role in this case. The purpose of the study is to develop a common web-based online platform for both tenants and house owners so that both tenants and landowners will mutually benefit from the system. This paper presents the development of web applications for the people of Bangladesh where both house owners and tenants can register and tenants can have houses for rent via sophisticated contact with the house owner. In this paper, a common online-based smart house rental web application has been developed both for tenants and for house owners. This web application is very user-friendly, efficient and it has got many unique features that are not offered by other currently available house rental websites here in Bangladesh. Tenants can register using their phone number, store information about their identity, search for available houses, send messages to house owners, and choose a suitable house using developed web applications. House owners can also register for the system, which will manually verify and authenticate the knowledge provided by the house owner can view a tenant’s information history whenever a tenant makes contact through text and supply house-related information accordingly. The proposed online smart house system has been tested and validated. It works very efficiently with many features. The application provided faster and improved opportunities to get houses, as well as ensuring the availability of houses for rent in the greatest number of areas. The system will help to spread trustworthy services nationwide and supply users with the chance to speak and improve the house rent in Bangladesh. Because it has many smart features, this developed online smart house rental web application will make it very easy for tenants to find a house to rent. House owners, on the other hand, can easily rent out their properties.展开更多
基金The financial support from the National Natural Science Foundation of China (32201179)Guangdong Basic and Applied Basic Research Foundation (2020A1515110126 and 2021A1515010130)+1 种基金the Fundamental Research Funds for the Central Universities (N2319005)Ningbo Science and Technology Major Project (2021Z027) is gratefully acknowledged。
文摘The development of bioinspired gradient hydrogels with self-sensing actuated capabilities for remote interaction with soft-hard robots remains a challenging endeavor. Here, we propose a novel multifunctional self-sensing actuated gradient hydrogel that combines ultrafast actuation and high sensitivity for remote interaction with robotic hand. The gradient network structure, achieved through a wettability difference method involving the rapid precipitation of MoO_(2) nanosheets, introduces hydrophilic disparities between two sides within hydrogel. This distinctive approach bestows the hydrogel with ultrafast thermo-responsive actuation(21° s^(-1)) and enhanced photothermal efficiency(increase by 3.7 ℃ s^(-1) under 808 nm near-infrared). Moreover, the local cross-linking of sodium alginate with Ca^(2+) endows the hydrogel with programmable deformability and information display capabilities. Additionally, the hydrogel exhibits high sensitivity(gauge factor 3.94 within a wide strain range of 600%), fast response times(140 ms) and good cycling stability. Leveraging these exceptional properties, we incorporate the hydrogel into various soft actuators, including soft gripper, artificial iris, and bioinspired jellyfish, as well as wearable electronics capable of precise human motion and physiological signal detection. Furthermore, through the synergistic combination of remarkable actuation and sensitivity, we realize a self-sensing touch bioinspired tongue. Notably, by employing quantitative analysis of actuation-sensing, we realize remote interaction between soft-hard robot via the Internet of Things. The multifunctional self-sensing actuated gradient hydrogel presented in this study provides a new insight for advanced somatosensory materials, self-feedback intelligent soft robots and human–machine interactions.
基金financially supported by National Natural Science Foundation of China(U24A20307,12304460).
文摘Mechanoluminescence(ML)is bringing a paradigm-shifting for next-generation lightbased human–robot interaction.However,the overlooked character of ML temporal dynamic response remains a critical barrier to overcoming the limitation of mechanooptical conversion efficiency.Here,by resolving the dynamic interplay among stimuli rate,interfacial charge accumulation and ML performance of three typical materials,like ZnS:Cu^(2+),SrAl_(2)O_(4):Eu^(2+),Dy^(3+),Y_(3)Al_(5)O_(12):Ce^(3+),the cognition of ML has been deeply understand.Obviously,the ML performance is predominantly governed by the crosscoupling of stimuli rate and stimuli time rather than absolute stress magnitude.For the first time,the optimal stretching stimulation rate for commercial ZnS:Cu^(2+),SrAl_(2)O_(4):Eu^(2+),Dy^(3+)and Y_(3)Al_(5)O_(12):Ce^(3+)are respectively determined as~10.3 Mpa/s,~11.0 Mpa/s,~31.9 Mpa/s,which is of great significance for obtaining high-performance ML behavior,and an ubiquitous ML hysteresis phenomenon is demonstrated originating from a time-consuming mechano-electro-optical conversion process even existing in trap-controlled SrAl_(2)O_(4):Eu^(2+),Dy^(3+).Moreover,a qualitative relationship for ML brightness(MLB),stimuli rate(sr),stimuli time(st),inherent interfacial triboelectricity coefficient(iitre)and relative interfacial triboelectricity coefficient(ritre)is established as ML B=f(sr)*g(st)*p(iitre)*q(ritre)for guiding the design of ML elastomers.For instance,based on this equation,a topology-optimized Y_(3)Al_(5)O_(12):Ce^(3+)@polydimethylsiloxane(PDMS)elastomer is engineered,achieving unprecedented 693 times brighter emission,78%lower stress threshold and 20%lighter weight,which is successfully applied in remote control(~450 m)of quadruped robot.Three main contributions of this work include:(i)demonstrating the influence law of temporal dynamic stimulation on ML performance.(ii)resolving long-standing mechano-optical asynchrony debates.(iii)establishing a universal guideline for designing high-performance ML platforms.
文摘The house rental issue is one of the elemental parts of society. Nowadays, it is extremely difficult to find suitable accommodation in city areas if people search for it physically. On the other hand, the land owner also needs to rent the house. It can be difficult to find tenants just to hang a lease sign on a building, and as a result, they lose money. An online common platform can play a vital role in this case. The purpose of the study is to develop a common web-based online platform for both tenants and house owners so that both tenants and landowners will mutually benefit from the system. This paper presents the development of web applications for the people of Bangladesh where both house owners and tenants can register and tenants can have houses for rent via sophisticated contact with the house owner. In this paper, a common online-based smart house rental web application has been developed both for tenants and for house owners. This web application is very user-friendly, efficient and it has got many unique features that are not offered by other currently available house rental websites here in Bangladesh. Tenants can register using their phone number, store information about their identity, search for available houses, send messages to house owners, and choose a suitable house using developed web applications. House owners can also register for the system, which will manually verify and authenticate the knowledge provided by the house owner can view a tenant’s information history whenever a tenant makes contact through text and supply house-related information accordingly. The proposed online smart house system has been tested and validated. It works very efficiently with many features. The application provided faster and improved opportunities to get houses, as well as ensuring the availability of houses for rent in the greatest number of areas. The system will help to spread trustworthy services nationwide and supply users with the chance to speak and improve the house rent in Bangladesh. Because it has many smart features, this developed online smart house rental web application will make it very easy for tenants to find a house to rent. House owners, on the other hand, can easily rent out their properties.
