Multifunctional materials have attracted tremendous attention in intelligent and interactive devices.However,achieving multi-dimensional sensing capabilities with the same perovskite quantum dot(PQD)material is still ...Multifunctional materials have attracted tremendous attention in intelligent and interactive devices.However,achieving multi-dimensional sensing capabilities with the same perovskite quantum dot(PQD)material is still in its infancy,with some considering it currently challenging and even unattainable.Drawing inspiration from neurons,a novel multifunctional CsPbBr_(3)/PDMS nanosphere is devised to sense humidity,temperature,and pressure simultaneously with unique interactive responses.The carefully engineered polydimethylsiloxane(PDMS)shell enables the reversible activity of the core CsPbBr_(3),serving a dual role similar to dendrites in conveying and evaluating external stimuli with high sensitivity.Molecular dynamics analysis reveals that the PDMS shell with proper pore density enhances the conductivity in water and heat,imparting CsPbBrs with sensitive but reversible properties.By tailoring the crosslinking density of the PDMS shell,nanospheres can surprisingly show customized sensitivity and reversible responses to different level of stimuli,achieving over 95%accuracy in multi-dimensional and wide-range sensing.The regular pressure-sensitive property,discovered for the frst time,is attributed to the regular morphology of the nanosphere,the inherent low rigidity of the PDMS shell,and the uniform distribution of the CsPbBr core material in combination.This study breaks away from conventional design paradigms of perovskite core-shell materials by customizing the cross-linked density of the shell material.The reversible response mechanism of nanospheres with gradient shell density is deeply explored in response to environmental stimuli,which offers fresh insights into multi-dimensional sensing and interactive display applications.展开更多
Interactive holography offers unmatched levels of immersion and user engagement in the field of future display.Despite of the substantial progress has been made in dynamic meta-holography,the realization of real-time,...Interactive holography offers unmatched levels of immersion and user engagement in the field of future display.Despite of the substantial progress has been made in dynamic meta-holography,the realization of real-time,highly smooth interactive holography remains a significant challenge due to the computational and display frame rate limitations.In this study,we introduced a dynamic interactive bitwise meta-holography with ultra-high computational and display frame rates.To our knowledge,this is the first reported practical dynamic interactive metasurface holographic system.We spa-tially divided the metasurface device into multiple distinct channels,each projecting a reconstructed sub-pattern.The switching states of these channels were mapped to bitwise operations on a set of bit values,which avoids complex holo-gram computations,enabling an ultra-high computational frame rate.Our approach achieves a computational frame rate of 800 kHz and a display frame rate of 23 kHz on a low-power Raspberry Pi computational platform.According to this methodology,we demonstrated an interactive dynamic holographic Tetris game system that allows interactive gameplay,color display,and on-the-fly hologram creation.Our technology presents an inspiration for advanced dynamic meta-holography,which is promising for a broad range of applications including advanced human-computer interaction,real-time 3D visualization,and next-generation virtual and augmented reality systems.展开更多
Based on light field reconstruction and motion recognition technique, a penetrable interactive floating 3D display system is proposed. The system consists of a high-frame-rate projector, a flat directional diffusing s...Based on light field reconstruction and motion recognition technique, a penetrable interactive floating 3D display system is proposed. The system consists of a high-frame-rate projector, a flat directional diffusing screen, a high-speed data transmission module, and a Kinect somatosensory device. The floating occlusioncorrect 3D image could rotate around some axis at different speeds according to user＇s hand motion. Eight motion directions and speed are detected accurately, and the prototype system operates efficiently with a recognition accuracy of 90% on average.展开更多
基金the support of the National Natural Science Foundation of China(Grant Nos.62175032 and 62104077)Key Science and Technology Project Program of Fujian Province(Grant No.2024HZ022005)+1 种基金Natural Science Foundation for Distinguished Young Scholars of Fujian Province(Grant No.2024J010046)Open Project Program of Wuhan National Laboratory for Optoelectronics(GrantNo.2023WNLOKF011).
文摘Multifunctional materials have attracted tremendous attention in intelligent and interactive devices.However,achieving multi-dimensional sensing capabilities with the same perovskite quantum dot(PQD)material is still in its infancy,with some considering it currently challenging and even unattainable.Drawing inspiration from neurons,a novel multifunctional CsPbBr_(3)/PDMS nanosphere is devised to sense humidity,temperature,and pressure simultaneously with unique interactive responses.The carefully engineered polydimethylsiloxane(PDMS)shell enables the reversible activity of the core CsPbBr_(3),serving a dual role similar to dendrites in conveying and evaluating external stimuli with high sensitivity.Molecular dynamics analysis reveals that the PDMS shell with proper pore density enhances the conductivity in water and heat,imparting CsPbBrs with sensitive but reversible properties.By tailoring the crosslinking density of the PDMS shell,nanospheres can surprisingly show customized sensitivity and reversible responses to different level of stimuli,achieving over 95%accuracy in multi-dimensional and wide-range sensing.The regular pressure-sensitive property,discovered for the frst time,is attributed to the regular morphology of the nanosphere,the inherent low rigidity of the PDMS shell,and the uniform distribution of the CsPbBr core material in combination.This study breaks away from conventional design paradigms of perovskite core-shell materials by customizing the cross-linked density of the shell material.The reversible response mechanism of nanospheres with gradient shell density is deeply explored in response to environmental stimuli,which offers fresh insights into multi-dimensional sensing and interactive display applications.
基金supports from National Natural Science Foundation of China (Grant No.62205117,52275429)National Key Research and Development Program of China (Grant No.2021YFF0502700)+3 种基金Young Elite Scientists Sponsorship Program by CAST (Grant No.2022QNRC001)West Light Foundation of the Chinese Academy of Sciences (Grant No.xbzg-zdsys-202206)Knowledge Innovation Program of Wuhan-Shuguang,Innovation project of Optics Valley Laboratory (Grant No.OVL2021ZD002)Hubei Provincial Natural Science Foundation of China (Grant No.2022CFB792).
文摘Interactive holography offers unmatched levels of immersion and user engagement in the field of future display.Despite of the substantial progress has been made in dynamic meta-holography,the realization of real-time,highly smooth interactive holography remains a significant challenge due to the computational and display frame rate limitations.In this study,we introduced a dynamic interactive bitwise meta-holography with ultra-high computational and display frame rates.To our knowledge,this is the first reported practical dynamic interactive metasurface holographic system.We spa-tially divided the metasurface device into multiple distinct channels,each projecting a reconstructed sub-pattern.The switching states of these channels were mapped to bitwise operations on a set of bit values,which avoids complex holo-gram computations,enabling an ultra-high computational frame rate.Our approach achieves a computational frame rate of 800 kHz and a display frame rate of 23 kHz on a low-power Raspberry Pi computational platform.According to this methodology,we demonstrated an interactive dynamic holographic Tetris game system that allows interactive gameplay,color display,and on-the-fly hologram creation.Our technology presents an inspiration for advanced dynamic meta-holography,which is promising for a broad range of applications including advanced human-computer interaction,real-time 3D visualization,and next-generation virtual and augmented reality systems.
基金supported by the National Basic Research Program of China(973 Program)(No.2013CB328806)the National High Technology Research and Development Program of China(863 Program)(No.2012AA011902)+1 种基金the National Natural Science Foundation of China(No.61177015)the Research Funds for the Central Universities of China(No.2012XZZX013)
文摘Based on light field reconstruction and motion recognition technique, a penetrable interactive floating 3D display system is proposed. The system consists of a high-frame-rate projector, a flat directional diffusing screen, a high-speed data transmission module, and a Kinect somatosensory device. The floating occlusioncorrect 3D image could rotate around some axis at different speeds according to user＇s hand motion. Eight motion directions and speed are detected accurately, and the prototype system operates efficiently with a recognition accuracy of 90% on average.
