Introducing fluorescent nanomaterials as artificial antennas of chloroplasts offers a promising approach to enhancing light harvesting in photosynthesis.However,this technology is limited by the dependence of the fluo...Introducing fluorescent nanomaterials as artificial antennas of chloroplasts offers a promising approach to enhancing light harvesting in photosynthesis.However,this technology is limited by the dependence of the fluorescence efficiency of nanomaterials on dispersed states that cannot enable nanomaterials inside and outside leaves to play an antenna role.Here,we developed solution and solid dual-state ultra-efficient blue emissive carbon dots(DuB_(2)-CDs)by regulating the content of graphitic-N,surface hydroxyl groups.and C–Si bonds based on a four-component microwave synthesis.The as-prepared DuB_(2)-CDs showed intense blue emission in aqueous solution and solid state,with absolute photoluminescence quantum yields of 84.04%and 95.69%,respectively.These features guaranteed that the internal(DuB_(2)-CDs infiltrating the mesophyll system)and external(DuB_(2)-CDs remaining on the surface of leaves)artificial antennas can simultaneously enhance the solar energy utilization efficiency of chloroplasts.Compared with the control groups without antenna use and internal antenna use only,the foliar application of DuB_(2)-CDs substantially enhanced the electron-transport rate,net photosynthesis rate,psbA gene expression,NADPH production,and other plant physiological parameters of living plant during photosynthesis.This work provided a promising strategy for realizing dual-state ultra-efficient emissive CDs while maximizing living plant-photosynthesis augmentation.展开更多
In this article,the ultra-efficient transfer matrix method(U-TMM)is developed to detecting the propagation coeffi-cients of ultra-multilayered anisotropic media(UMAM)in the terahertz region.Starting from the curl Maxw...In this article,the ultra-efficient transfer matrix method(U-TMM)is developed to detecting the propagation coeffi-cients of ultra-multilayered anisotropic media(UMAM)in the terahertz region.Starting from the curl Maxwell’s equations and combined with the constitutive relation,the governing equation can be described in matrix form from which the four eigenvalues are derived,so that each component of the electromagnetic field can be uniquely represented by the fixed formula.The core thought with U-TMM is to maintain tangential continuity of electromagnetic fields between different media,thereby constructing transfer matrix between various regions and achieving the calculation of propagation coefficients in UMAM.After successfully validating U-TMM through two numerical examples,we find that U-TMM compensates for the shortcomings of COMSOL software in dealing with the UMAM problems,and in addition,the computational efficiency is significantly improved compared to the conventional transfer matrix method.Finally,to verify the energy change process in UMAM,we generate color images of the propagation coeffi-cients by U-TMM in transverse electric/transverse magnetic mode,which can be applied to the analysis for materials and devices in the terahertz region.展开更多
基金National Natural Science Foundation of China,Grant/Award Number:22372114National Key Research and Development Program of China,Grant/Award Number:2023YFD2202104+1 种基金Science and Technology Project of Xinjiang Uygur Autonomous Region,Grant/Award Numbers:2022B02033-3,2022B02049-3-3Natural Science Foundation of Shanxi Province,Grant/Award Number:202203021211143。
文摘Introducing fluorescent nanomaterials as artificial antennas of chloroplasts offers a promising approach to enhancing light harvesting in photosynthesis.However,this technology is limited by the dependence of the fluorescence efficiency of nanomaterials on dispersed states that cannot enable nanomaterials inside and outside leaves to play an antenna role.Here,we developed solution and solid dual-state ultra-efficient blue emissive carbon dots(DuB_(2)-CDs)by regulating the content of graphitic-N,surface hydroxyl groups.and C–Si bonds based on a four-component microwave synthesis.The as-prepared DuB_(2)-CDs showed intense blue emission in aqueous solution and solid state,with absolute photoluminescence quantum yields of 84.04%and 95.69%,respectively.These features guaranteed that the internal(DuB_(2)-CDs infiltrating the mesophyll system)and external(DuB_(2)-CDs remaining on the surface of leaves)artificial antennas can simultaneously enhance the solar energy utilization efficiency of chloroplasts.Compared with the control groups without antenna use and internal antenna use only,the foliar application of DuB_(2)-CDs substantially enhanced the electron-transport rate,net photosynthesis rate,psbA gene expression,NADPH production,and other plant physiological parameters of living plant during photosynthesis.This work provided a promising strategy for realizing dual-state ultra-efficient emissive CDs while maximizing living plant-photosynthesis augmentation.
基金supported by the National Natural Science Foundation of China(Grant No.62101333)the 2024 Anhui Province University Science and Engineering Teachers’Internship Program in Enterprises(Grant No.2024jsq ygz02).
文摘In this article,the ultra-efficient transfer matrix method(U-TMM)is developed to detecting the propagation coeffi-cients of ultra-multilayered anisotropic media(UMAM)in the terahertz region.Starting from the curl Maxwell’s equations and combined with the constitutive relation,the governing equation can be described in matrix form from which the four eigenvalues are derived,so that each component of the electromagnetic field can be uniquely represented by the fixed formula.The core thought with U-TMM is to maintain tangential continuity of electromagnetic fields between different media,thereby constructing transfer matrix between various regions and achieving the calculation of propagation coefficients in UMAM.After successfully validating U-TMM through two numerical examples,we find that U-TMM compensates for the shortcomings of COMSOL software in dealing with the UMAM problems,and in addition,the computational efficiency is significantly improved compared to the conventional transfer matrix method.Finally,to verify the energy change process in UMAM,we generate color images of the propagation coeffi-cients by U-TMM in transverse electric/transverse magnetic mode,which can be applied to the analysis for materials and devices in the terahertz region.
