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| 1 | Vapor-Phase Precise-Synthesis of 2D Inorganic Materials for Optoelectronics显示文摘Comprehensive Summary 2D materials have attracted intensive attention due to their unique electrical and optical properties associated with their strictly defined low dimensionalities.They provide a wide range of basic building blocks for future electronics and optoelectronics.The chemical vapor deposition(CVD)has been proposed to be efficient to realize the controllable thickness,scalable size,which are necessary for both industrial applications and fundamental researches.Herein,we share our research works to realize the controllable growth of 2D materials.We found that stable growth microenvironment can regulate the growth of 2D materials.Thus,we developed near-steady source supply,space-confined,and additive-assisted passivated growth methods to solve the problem of unstable growth environment caused by uneven source and mass transfer.Then,we developed several strategies to precisely control the parity,separation,and transport of the carriers in 2D materials including fabricating defect-free interface via van der Waals dielectrics,modulating the parity of carriers via ferroelectric-field,and the separation of carriers via band engineering.Toward future development,we highlight the opportunities and challenges inthis field. | Xing Zhou Fuwei Zhuge Han Wang Tianyou Zhai | 2023 | Chinese Journal of Chemistry2023，41，7： | 0 |
| 2 | Immunomodulation and osteointegration of infected implants by ion-riched and hierarchical porous TiO_(2)matrix显示文摘Infection is a main cause of implant failure.The microenvironment cell experiencing after antimicrobial therapy of infected implants is very crucial for immunomodulation and subsequent osteointegration.Based on the superiority of photothermal therapy in anti-infection,a matrix of nanograined TiO_(2)with(Si/P)-dual ions and hierarchical nano/microporous topography is developed on Ti implant by micro-arc oxidation.It shows good photothermal properties due to the lattice distortion induced by ion doping and can kill bacteria with near-infrared(NIR)light irradiation efficiently.Due to the combined action of porous topography and release of Si/P ions,the TiO_(2)matrix achieves M1-to-M_(2)phenotype switch of macrophages timely at different simulating infection stage and accelerates recruitment,proliferation and osteogenic differentiation of bone marrow mesenchymal stem cells(BMSCs)in vitro.In vivo,the TiO_(2)matrix also shows desired antibacterial performance after photothermal therapy and exhibits outstanding immunomodulatory ability and new bone formation efficiency.This study provides a promising TiO_(2)matrix applied in clinic for settling implant infection by NIR light irradiation and promoting bone regeneration through osteoimmunomodulation. | Yang Xue Lan Zhang Fuwei Liu Liang Kong Yong Han | 2023 | Nano Research2023，16，2： | 0 |
| 3 | Slug Flow Characteristics in Inclined and Vertical Channels显示文摘Horizontal well production technology gradually occupies a dominant position in the petroleum field.With the rise in water production in the later stage of exploitation,slug flow phenomena will exist in horizontal,inclined and even vertical sections of gas wells.To grasp the flow law of slug flow and guide engineering practice,the flow law of slug flow at various inclination angles(30°~90°)is studied by means of the combination of laboratory experiments(including high frequency pressure data acquisition system)and finite element numerical simulation.The results reveal that because of the delay of pressure variation at the corresponding position of pipeline resulting from gas expansion,the highest point of pressure change curve corresponds not to the highest point of liquid holdup curve(pressure change lags behind 0.125 s of liquid holdup change).Thus,the delay of pressure should be highlighted in predicting slug flow using pressure parameter change;otherwise the accuracy of prediction will be affected when slug flow occurs.It is generally known that liquid holdup and pressure drop are the major factors affecting the pressure variation and stable operation of pipelines.Accordingly,the results of finite element numerical simulation and Beggs-Brill model calculation are compared with those of laboratory experiments.The numerical simulation method is applicable to predicting the pressure drop of the pipeline,while the Beggs-Brill model is more suitable for predicting the liquid holdup variation of the pipeline.The research conclusion helps reveal the slug flow law,and it is of a scientific guiding implication to the prediction method of flow parameters under slug flow pattern in the process of gas well exploitation. | Zhihui Wang Wei Luo Ruiquan Liao Xiangwei Xie Fuwei Han Hongying Wang | 2019 | Fluid Dynamics & Materials Processing2019，15，5： | 0 |
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