In recent years,triboelectric nanogenerators have emerged as a promising sensing and power technology.Triboelectric textiles are particularly desirable for natural motion tracking and advanced wearable scenarios.Howev...In recent years,triboelectric nanogenerators have emerged as a promising sensing and power technology.Triboelectric textiles are particularly desirable for natural motion tracking and advanced wearable scenarios.However,current approaches mostly rely on a physical spacer at the device interface,fail to integrate triboelectric textiles into clothing,or compromise the breathability and wear comfort for natural and subtle motion tracking.Herein,we propose a triboelectric textile that not only eliminates the need for artificial spacers but also allows for seamless integration into clothing as part of everyday wear.The incorporation of micro-gaps through amine-halogen tribo-pair nanofibers enhances the output fourfold over extended use.The integrated triboelectric garment system is capable of detecting continuous angular changes,such as flexion and extension motions,exhibiting high sensitivity to subtle movements,including human tremors.The design of a lightweight,pocket-sized signal acquisition and transmission module ensures unobtrusive wearability for motion tracking and energy harvesting from natural human activities,thereby opening doors to diverse applications in wearables and healthcare.展开更多
Background:Active video games are a new method for increasing physical activity(PA).Fully immersive virtual reality(VR)is a hardware device on which an active video game can run.Active(video games in)VR(AVR),might inc...Background:Active video games are a new method for increasing physical activity(PA).Fully immersive virtual reality(VR)is a hardware device on which an active video game can run.Active(video games in)VR(AVR),might increase immersion,game engagement,and moderate-to-vigorous PA(MVPA),thereby yielding greater exercise-related benefits,e.g.,cognitive performance.Methods:We examined the induction of MVPA via an AVR and a sedentary VR(SVR)as well as the effects of VR play on cognitive performance,which was monitored using 2 different methods.Each of 29 sedentary college students attended three 20-min laboratory sessions(AVR,SVR,or control)in a randomized order;during the control session,they sat quietly doing nothing.A fully immersive headset was used for the 2 video game sessions.We monitored and computed participants’PA using hip-wom accelerometers(wGT3 x-bt;ActiGraph,Pensacola,FL,USA)and a heart rate band(Polar H7;Polar,Kempele,Finland).After each session,the participants completed a mnemonic similarity test(MST)to measure recognition memory.They also filled out a motion sickness questionnaire and an abbreviated game experience questionnaire.Results:The AVR session induced a significantly greater heart rate and more time spent in MVPA than did either of the other 2 sessions regardless of the PA monitoring method.AVR elicited greater game experience questionnaire-assessed sensory and imaginative immersion,challenge,and positive affect than did SVR.The mnemonic similarity test recognition score was marginally higher post-AVR session than it was post-SVR session.Conclusion:AVR elicited MVPA without a significant increase in motion sickness and induced a better game experience and better borderline cognitive performance than did SVR.展开更多
As emerging wearables,triboelectric textiles offer dual functionalities for sensing and energy harvesting,but often encounter challenges of alternating signal generation and high internal impedance.Recent advancements...As emerging wearables,triboelectric textiles offer dual functionalities for sensing and energy harvesting,but often encounter challenges of alternating signal generation and high internal impedance.Recent advancements in tribovoltaic textile development still show limitations in device configuration and garment integration,and consequently in human motion tracking.Herein,we report a stretchable and robust all-in-one tribovoltaic textile(SR-ATVT)featuring a three-dimensional braided core–shell architecture.Due to the Schottky contact between the metal core and semiconductor shell,SR-ATVTs consistently produce self-rectifying direct current output throughout stretching–releasing cycles.The demonstrated SR-ATVT exhibits remarkable output stability under real-use-oriented scenarios(within 10 washing rounds,after 2600 continuous cycles,and over a 4-month storage period)and serves as both angle sensor and fitness tracker when further integrated into clothing.This study presents a pioneering approach to device configuration and wearable application of tribovoltaic textiles,paving the way for the development of next-generation smart triboelectric wearables.展开更多
Enzymatic sensors have inherent problems such as the low stability and limited pH range in industrial and biomedical applications and therefore,more efficient nonenzymatic sensors are highly desirable.Herein,plasmafun...Enzymatic sensors have inherent problems such as the low stability and limited pH range in industrial and biomedical applications and therefore,more efficient nonenzymatic sensors are highly desirable.Herein,plasmafunctionalized defective MoSe_(2)is prepared and studied as a highly efficient catalyst for electrochemical sensing of H_(2)O_(2).Experiments and theoretical computations show that the plasma-induced Se multi-vacancies and nitrogen dopants generate new active sites,expose more edge active surfaces,narrow the bandgap,and strengthen binding with the·OH intermediate,which imparts new fundamental knowledge about the roles of defects in catalysis.The defective MoSe_(2)-catalyzed sensor delivers competitive performance in hydrogen peroxide detection such as a low detection limit of 12.6 nmol/L,wide operational pH range of 1−13,good long-term stability,and high selectivity.The portable sensor produced by screen printing confirms the excellent commercial potential and in addition,the results not only reveal a novel concept to design and fabricate high-performance sensors for H_(2)_(O2)but also provide insights into the effectiveness of surface modification of diverse catalytic materials.展开更多
文摘In recent years,triboelectric nanogenerators have emerged as a promising sensing and power technology.Triboelectric textiles are particularly desirable for natural motion tracking and advanced wearable scenarios.However,current approaches mostly rely on a physical spacer at the device interface,fail to integrate triboelectric textiles into clothing,or compromise the breathability and wear comfort for natural and subtle motion tracking.Herein,we propose a triboelectric textile that not only eliminates the need for artificial spacers but also allows for seamless integration into clothing as part of everyday wear.The incorporation of micro-gaps through amine-halogen tribo-pair nanofibers enhances the output fourfold over extended use.The integrated triboelectric garment system is capable of detecting continuous angular changes,such as flexion and extension motions,exhibiting high sensitivity to subtle movements,including human tremors.The design of a lightweight,pocket-sized signal acquisition and transmission module ensures unobtrusive wearability for motion tracking and energy harvesting from natural human activities,thereby opening doors to diverse applications in wearables and healthcare.
基金supported in part by a grant from the National Institute of Diabetes and Digestive and Kidney Diseases(R01DK109316,principle investigator:ASL)by the College of Arts,Media,and Design,Bouve College of Health Sciences at Northeastern University,Boston,MA,USA。
文摘Background:Active video games are a new method for increasing physical activity(PA).Fully immersive virtual reality(VR)is a hardware device on which an active video game can run.Active(video games in)VR(AVR),might increase immersion,game engagement,and moderate-to-vigorous PA(MVPA),thereby yielding greater exercise-related benefits,e.g.,cognitive performance.Methods:We examined the induction of MVPA via an AVR and a sedentary VR(SVR)as well as the effects of VR play on cognitive performance,which was monitored using 2 different methods.Each of 29 sedentary college students attended three 20-min laboratory sessions(AVR,SVR,or control)in a randomized order;during the control session,they sat quietly doing nothing.A fully immersive headset was used for the 2 video game sessions.We monitored and computed participants’PA using hip-wom accelerometers(wGT3 x-bt;ActiGraph,Pensacola,FL,USA)and a heart rate band(Polar H7;Polar,Kempele,Finland).After each session,the participants completed a mnemonic similarity test(MST)to measure recognition memory.They also filled out a motion sickness questionnaire and an abbreviated game experience questionnaire.Results:The AVR session induced a significantly greater heart rate and more time spent in MVPA than did either of the other 2 sessions regardless of the PA monitoring method.AVR elicited greater game experience questionnaire-assessed sensory and imaginative immersion,challenge,and positive affect than did SVR.The mnemonic similarity test recognition score was marginally higher post-AVR session than it was post-SVR session.Conclusion:AVR elicited MVPA without a significant increase in motion sickness and induced a better game experience and better borderline cognitive performance than did SVR.
基金the fellowship from the China Scholarship Council(CSC)under the Grant CSC NO.202206630029.
文摘As emerging wearables,triboelectric textiles offer dual functionalities for sensing and energy harvesting,but often encounter challenges of alternating signal generation and high internal impedance.Recent advancements in tribovoltaic textile development still show limitations in device configuration and garment integration,and consequently in human motion tracking.Herein,we report a stretchable and robust all-in-one tribovoltaic textile(SR-ATVT)featuring a three-dimensional braided core–shell architecture.Due to the Schottky contact between the metal core and semiconductor shell,SR-ATVTs consistently produce self-rectifying direct current output throughout stretching–releasing cycles.The demonstrated SR-ATVT exhibits remarkable output stability under real-use-oriented scenarios(within 10 washing rounds,after 2600 continuous cycles,and over a 4-month storage period)and serves as both angle sensor and fitness tracker when further integrated into clothing.This study presents a pioneering approach to device configuration and wearable application of tribovoltaic textiles,paving the way for the development of next-generation smart triboelectric wearables.
基金Hong Kong Research Grants Council(RGC),Grant/Award Numbers:17210219,T21‐711/16‐RChina Postdoctoral Science Foundation,Grant/Award Number:2020M680178City University of Hong Kong,Grant/Award Number:7005505。
文摘Enzymatic sensors have inherent problems such as the low stability and limited pH range in industrial and biomedical applications and therefore,more efficient nonenzymatic sensors are highly desirable.Herein,plasmafunctionalized defective MoSe_(2)is prepared and studied as a highly efficient catalyst for electrochemical sensing of H_(2)O_(2).Experiments and theoretical computations show that the plasma-induced Se multi-vacancies and nitrogen dopants generate new active sites,expose more edge active surfaces,narrow the bandgap,and strengthen binding with the·OH intermediate,which imparts new fundamental knowledge about the roles of defects in catalysis.The defective MoSe_(2)-catalyzed sensor delivers competitive performance in hydrogen peroxide detection such as a low detection limit of 12.6 nmol/L,wide operational pH range of 1−13,good long-term stability,and high selectivity.The portable sensor produced by screen printing confirms the excellent commercial potential and in addition,the results not only reveal a novel concept to design and fabricate high-performance sensors for H_(2)_(O2)but also provide insights into the effectiveness of surface modification of diverse catalytic materials.
