Flexible circuit switches have been widely used in electronic devices due to their outstanding flexibility and operability.In order to expand the types of flexible circuit switch materials,we develop a unique composit...Flexible circuit switches have been widely used in electronic devices due to their outstanding flexibility and operability.In order to expand the types of flexible circuit switch materials,we develop a unique composite material,which integrates a photoresponsive flexible substrate derived from a photoreactive coordination polymer(CP)with an elastic conductive adhesive tape(CAT)in this work.The photoreactive CP{[Cd(2,6-bpvn)(3,5-DBB)_(2)]·DMF}_(n)(1)is prepared through solvothermal reaction of Cd(NO_(3))_(2)·4H_(2)O with 2,6-bis((E)-2-(pyridin-4-yl)vinyl)naphthalene(2,6-bpvn)and 3,5-dibromobenzoic acid(3,5-HDBB).Upon irradiation with UV light,crystals of 1 can undergo[2+2]photocycloaddition reaction and exhibit photomechanical movements.The crystalline powder of 1 can be uniformly distributed in polyvinyl alcohol(PVA)to generate the composite film 1-PVA.After pasting a piece of CAT on the surface of a 1-PVA film,a conductive two-layer film of 1-PVA/CAT can be fabricated.This film bends rapidly upon UV light exposure,connecting the circuit and causing the bulb to light up.When the light source is removed,it reverts to its initial state and the circuit is disconnected and the bulb is extinguished.This process can be cycled at least 100 times,achieving precise turn-on and turn-off performances of the photocontrollable circuit switch.展开更多
Transcranial temporal interference stimulation(tTIS)is a novel non-invasive neuromodulation technique with the potential to precisely target deep brain structures.This study explores the neural and behavioral effects ...Transcranial temporal interference stimulation(tTIS)is a novel non-invasive neuromodulation technique with the potential to precisely target deep brain structures.This study explores the neural and behavioral effects of tTIS on the superior colliculus(SC),a region involved in eye movement control,in mice.Computational modeling revealed that tTIS delivers more focused stimulation to the SC than traditional transcranial alternating current stimulation.In vivo experiments,including Ca^(2+)signal recordings and eye movement tracking,showed that tTIS effectively modulates SC neural activity and induces eye movements.A significant correlation was found between stimulation frequency and saccade frequency,suggesting direct tTIS-induced modulation of SC activity.These results demonstrate the precision of tTIS in targeting deep brain regions and regulating eye movements,highlighting its potential for neuroscientific research and therapeutic applications.展开更多
为探究安全标志识别者的疲劳程度和教育培训情况对安全标志识别效果的影响机制,优化安全标志识别效果,通过开展眼动试验和开发安全标志信息管理系统,提出一种基于眼动试验结果和近场通信(Near Field Communication,NFC)技术的安全标志...为探究安全标志识别者的疲劳程度和教育培训情况对安全标志识别效果的影响机制,优化安全标志识别效果,通过开展眼动试验和开发安全标志信息管理系统,提出一种基于眼动试验结果和近场通信(Near Field Communication,NFC)技术的安全标志信息管理系统。眼动试验表明,适度的运动可使识别者更好地识别安全标志,而过度疲劳会导致安全标志的识别效果较差,针对性的教育培训能较大程度地提高安全标志的识别效果。基于NFC技术的安全标志信息管理系统通过拓展设备设施安全状况的信息容量和人机交互自主学习,实现了设备设施安全信息的全面呈现与高效识别。与传统安全教育培训方式对比表明,基于NFC技术的安全标志辅助安全培训,能够显著提升识别者对安全知识的理解与记忆能力,为安全标志识别效果提升提供了创新性的技术解决方案。展开更多
基金support from the National Natural Science Foundation of China(No.U24A20507,22271203)the State Key Laboratory of Organometallic Chemistry,Shanghai Institute of Organic Chemistry,Chinese Academy of Sciences(No.2024KF005)Open Research Fund of State Key Laboratory of Coordination Chemistry,School of Chemistry and Chemical Engineering of Nanjing University and the Collaborative Innovation Centre of Suzhou Nano Science and Technology.
文摘Flexible circuit switches have been widely used in electronic devices due to their outstanding flexibility and operability.In order to expand the types of flexible circuit switch materials,we develop a unique composite material,which integrates a photoresponsive flexible substrate derived from a photoreactive coordination polymer(CP)with an elastic conductive adhesive tape(CAT)in this work.The photoreactive CP{[Cd(2,6-bpvn)(3,5-DBB)_(2)]·DMF}_(n)(1)is prepared through solvothermal reaction of Cd(NO_(3))_(2)·4H_(2)O with 2,6-bis((E)-2-(pyridin-4-yl)vinyl)naphthalene(2,6-bpvn)and 3,5-dibromobenzoic acid(3,5-HDBB).Upon irradiation with UV light,crystals of 1 can undergo[2+2]photocycloaddition reaction and exhibit photomechanical movements.The crystalline powder of 1 can be uniformly distributed in polyvinyl alcohol(PVA)to generate the composite film 1-PVA.After pasting a piece of CAT on the surface of a 1-PVA film,a conductive two-layer film of 1-PVA/CAT can be fabricated.This film bends rapidly upon UV light exposure,connecting the circuit and causing the bulb to light up.When the light source is removed,it reverts to its initial state and the circuit is disconnected and the bulb is extinguished.This process can be cycled at least 100 times,achieving precise turn-on and turn-off performances of the photocontrollable circuit switch.
基金supported by the National Natural Science Foundation of China(T2394533,32222036,82030038,and 62472206)the National Key Research and Development Program of China(2018YFA0701400)the Shenzhen Science and Technology Innovation Committee(2022410129,KJZD20230923115221044,and KCXFZ20201221173400001).
文摘Transcranial temporal interference stimulation(tTIS)is a novel non-invasive neuromodulation technique with the potential to precisely target deep brain structures.This study explores the neural and behavioral effects of tTIS on the superior colliculus(SC),a region involved in eye movement control,in mice.Computational modeling revealed that tTIS delivers more focused stimulation to the SC than traditional transcranial alternating current stimulation.In vivo experiments,including Ca^(2+)signal recordings and eye movement tracking,showed that tTIS effectively modulates SC neural activity and induces eye movements.A significant correlation was found between stimulation frequency and saccade frequency,suggesting direct tTIS-induced modulation of SC activity.These results demonstrate the precision of tTIS in targeting deep brain regions and regulating eye movements,highlighting its potential for neuroscientific research and therapeutic applications.
文摘为探究安全标志识别者的疲劳程度和教育培训情况对安全标志识别效果的影响机制,优化安全标志识别效果,通过开展眼动试验和开发安全标志信息管理系统,提出一种基于眼动试验结果和近场通信(Near Field Communication,NFC)技术的安全标志信息管理系统。眼动试验表明,适度的运动可使识别者更好地识别安全标志,而过度疲劳会导致安全标志的识别效果较差,针对性的教育培训能较大程度地提高安全标志的识别效果。基于NFC技术的安全标志信息管理系统通过拓展设备设施安全状况的信息容量和人机交互自主学习,实现了设备设施安全信息的全面呈现与高效识别。与传统安全教育培训方式对比表明,基于NFC技术的安全标志辅助安全培训,能够显著提升识别者对安全知识的理解与记忆能力,为安全标志识别效果提升提供了创新性的技术解决方案。
