The outbreak of COVID-19 pneumonia has had a serious impact on the world and has led to a greater awareness of the importance of infectious disease prevention and control.Biology is closely related to life sciences an...The outbreak of COVID-19 pneumonia has had a serious impact on the world and has led to a greater awareness of the importance of infectious disease prevention and control.Biology is closely related to life sciences and is an ideal discipline to penetrate infectious disease education.Conducting infectious disease prevention and control education can help increase students’knowledge of infectious disease prevention and control and prompt them to form good living habits.展开更多
As essential components of numerous flexible and wearable optoelectronic devices,the flexible transparent conducting electrodes(TCEs)with sufficient optical transmittance and electric conductivity become more and more...As essential components of numerous flexible and wearable optoelectronic devices,the flexible transparent conducting electrodes(TCEs)with sufficient optical transmittance and electric conductivity become more and more important.In this work,we fabricated a large-area flexible TCE based on leaf vein-like hierarchical metal grids(HMG)comprising of mesoscale"trunk"and microscale"branches".The selfformed branched grids made the conducting paths distributing uniformly while the laser-etching trunk grids enabled to transport the collected electrons across long-distance.The Ag HMG exhibited high optical transmittance(-81%)with low sheet resistance(1.36Ωsq-1,which could be simply optimized through adjusting the grids’widths,spaces,and the sizes of the TiO2 colloidal crackle patterns.In addition,on the basis of such advanced HMG electrode,flexible electrochromic devices(ECDs)with remarkable cyclic performance were fabricated.The HMG with high transparency,conductivity,and flexibility provides a promising TCE for the next-generation flexible and wearable optoelectronic devices.展开更多
A wearable sensing system that can reconstruct dynamic 3D human body models for virtual cloth fitting is highly important in the era of information and metaverse.However,few research has been conducted regarding confo...A wearable sensing system that can reconstruct dynamic 3D human body models for virtual cloth fitting is highly important in the era of information and metaverse.However,few research has been conducted regarding conformal sen-sors for accurately measuring the human body circumferences for dynamic 3D human body reshaping.Here,we develop a stretchable spring-sheathed yarn sensor(SSYS)as a smart ruler,for precisely measuring the circumference of human bodies and long-term tracking the movement for the dynamic 3D body reconstruction.The SSYS has a robust property,high resilience,high stability(>18000),and ultrafast response(12 ms)to external deformation.It is also washable,wearable,tailorable,and durable for long-time wearing.Moreover,geometric,and mechanical behaviors of the SSYS are systematically investigated both theoretically and experimentally.In addition,a transfer learning algorithm that bridges the discrepancy of real and virtual sensing performance is devel-oped,enabling a small body circumference measurement error of 1.79%,notice-ably lower than that of traditional learning algorithm.Furtherly,3D human bodies that are numerically consistent with the actual bodies are reconstructed.The 3D dynamic human body reconstruction based on the wearing sensing sys-tem and transfer learning algorithm enables excellent virtual fitting and shirt customization in a smart and highly efficient manner.This wearable sensing technology shows great potential in human-computer interaction,intelligent fitting,specialized protection,sports activities,and human physiological health tracking.展开更多
In this work, a GaN p-i-n diode based on Mg ion implantation for visible-blind UV detection is demonstrated.With an optimized implantation and annealing process, a p-GaN layer and corresponding GaN p-i-n photodiode ar...In this work, a GaN p-i-n diode based on Mg ion implantation for visible-blind UV detection is demonstrated.With an optimized implantation and annealing process, a p-GaN layer and corresponding GaN p-i-n photodiode are achieved via Mg implantation. As revealed in the UV detection characterizations, these diodes exhibit a sharp wavelength cutoff at 365 nm, high UV/visible rejection ratio of 1.2 × 10~4, and high photoresponsivity of 0.35 A/W, and are proved to be comparable with commercially available GaN p-n photodiodes. Additionally, a localized states-related gain mechanism is systematically investigated, and a relevant physics model of electricfield-assisted photocarrier hopping is proposed. The demonstrated Mg ion-implantation-based approach is believed to be an applicable and CMOS-process-compatible technology for GaN-based p-i-n photodiodes.展开更多
基金Anqing Normal University School-Level Teaching and Research Project(2022aqnujyxm32)Anqing Normal University Provincial Graduate Online CourseAnhui Province Graduate Student Online Course on Animal Ecology。
文摘The outbreak of COVID-19 pneumonia has had a serious impact on the world and has led to a greater awareness of the importance of infectious disease prevention and control.Biology is closely related to life sciences and is an ideal discipline to penetrate infectious disease education.Conducting infectious disease prevention and control education can help increase students’knowledge of infectious disease prevention and control and prompt them to form good living habits.
基金supported by the Shenzhen Basic Research Program(JCYJ20180306173007696)the Natural Science Foundation of Fujian Province(2017J01104)+4 种基金the Fundamental Research Funds for the Central Universities of China(20720160127,20720180013)Doctoral Fund of the Ministry of Education(20130121110018)NUS AcRF Tier 1(R-144-000-367-112)the“111”Project(B16029)the 1000 Talents Program Funding from the Xiamen University.
文摘As essential components of numerous flexible and wearable optoelectronic devices,the flexible transparent conducting electrodes(TCEs)with sufficient optical transmittance and electric conductivity become more and more important.In this work,we fabricated a large-area flexible TCE based on leaf vein-like hierarchical metal grids(HMG)comprising of mesoscale"trunk"and microscale"branches".The selfformed branched grids made the conducting paths distributing uniformly while the laser-etching trunk grids enabled to transport the collected electrons across long-distance.The Ag HMG exhibited high optical transmittance(-81%)with low sheet resistance(1.36Ωsq-1,which could be simply optimized through adjusting the grids’widths,spaces,and the sizes of the TiO2 colloidal crackle patterns.In addition,on the basis of such advanced HMG electrode,flexible electrochromic devices(ECDs)with remarkable cyclic performance were fabricated.The HMG with high transparency,conductivity,and flexibility provides a promising TCE for the next-generation flexible and wearable optoelectronic devices.
基金National Nature Science Foundation of China(No.12074322,No.62072383)Science and Technology Project of Xiamen City(3502Z20183012)+1 种基金Science and Technology Planning Project of Guangdong Province(2018B030331001)Shenzhen Science and technology plan project(JCYJ20180504170208402)。
文摘A wearable sensing system that can reconstruct dynamic 3D human body models for virtual cloth fitting is highly important in the era of information and metaverse.However,few research has been conducted regarding conformal sen-sors for accurately measuring the human body circumferences for dynamic 3D human body reshaping.Here,we develop a stretchable spring-sheathed yarn sensor(SSYS)as a smart ruler,for precisely measuring the circumference of human bodies and long-term tracking the movement for the dynamic 3D body reconstruction.The SSYS has a robust property,high resilience,high stability(>18000),and ultrafast response(12 ms)to external deformation.It is also washable,wearable,tailorable,and durable for long-time wearing.Moreover,geometric,and mechanical behaviors of the SSYS are systematically investigated both theoretically and experimentally.In addition,a transfer learning algorithm that bridges the discrepancy of real and virtual sensing performance is devel-oped,enabling a small body circumference measurement error of 1.79%,notice-ably lower than that of traditional learning algorithm.Furtherly,3D human bodies that are numerically consistent with the actual bodies are reconstructed.The 3D dynamic human body reconstruction based on the wearing sensing sys-tem and transfer learning algorithm enables excellent virtual fitting and shirt customization in a smart and highly efficient manner.This wearable sensing technology shows great potential in human-computer interaction,intelligent fitting,specialized protection,sports activities,and human physiological health tracking.
基金National Key R&D Program of China(2017YFB0403000)National Natural Science Foundation of China(NSFC)(61774081,91850112)+3 种基金Natural Science Foundation of Jiangsu Province(BK20161401)Fundamental Research Funds for the Central Universities(021014380085,021014380093,021014380098)Priority Academic Program Development of Jiangsu Higher Education InstitutionsScience and Technology Project of State Grid Corporation of China(SGSDDK00KJJS1600071)
文摘In this work, a GaN p-i-n diode based on Mg ion implantation for visible-blind UV detection is demonstrated.With an optimized implantation and annealing process, a p-GaN layer and corresponding GaN p-i-n photodiode are achieved via Mg implantation. As revealed in the UV detection characterizations, these diodes exhibit a sharp wavelength cutoff at 365 nm, high UV/visible rejection ratio of 1.2 × 10~4, and high photoresponsivity of 0.35 A/W, and are proved to be comparable with commercially available GaN p-n photodiodes. Additionally, a localized states-related gain mechanism is systematically investigated, and a relevant physics model of electricfield-assisted photocarrier hopping is proposed. The demonstrated Mg ion-implantation-based approach is believed to be an applicable and CMOS-process-compatible technology for GaN-based p-i-n photodiodes.
