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Dragging 3D printing technique controls pore sizes of tissue engineered blood vessels to induce spontaneous cellular assembly

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Bioactive Materials 2024年第1期31卷 590-602页

作者： Hun-Jin Jeong Hyoryung Nam Jae-Seok Kim Sungkeon Cho Hyun-Ha Park Young-Sam Cho Hyungkook Jeon Jinah Jang Seung-Jae Lee Department of Mechanical Engineering Wonkwang University54538IksanRepublic of Korea Department of Convergence IT Engineering Pohang University of Science and Technology37673PohangGyeongbukRepublic of Korea Department of Mechanical and Design Engineering Wonkwang University54538IksanRepublic of Korea Department of Mechanical Engineering Pohang University of Science and Technology37673PohangGyeongbukRepublic of Korea School of Interdisciplinary Bioscience and Bioengineering Pohang University of Science and Technology37673PohangGyeongbukRepublic of Korea Institute of Convergence Science Yonsei University03722SeoulRepublic of Korea Regenerative Engineering Laboratory Columbia University630W 168th STNew York10032USA Department of Manufacturing Systems and Design Engineering Seoul National University of Science and Technology01811SeoulRepublic of Korea

To date,several off-the-shelf products such as artificial blood vessel grafts have been reported and clinically tested for small diameter vessel(SDV)***,conventional artificial blood vessel grafts lack endothelium and,thus,are not ideal for SDV transplantation as they can cause *** addition,a suc-cessful artificial blood vessel graft for SDV must have sufficient mechanical properties to withstand various external ***,we developed a spontaneous cellular assembly SDV(S-SDV)that develops without additional *** improving the dragging 3D printing technique,SDV constructs with free-form,multilayers and controllable pore size can be fabricated at ***,The S-SDV filled in the natural poly-mer bioink containing human umbilical vein endothelial cells(HUVECs)and human aorta smooth muscle cells(HAoSMCs).The endothelium can be induced by migration and self-assembly of endothelial cells through pores of the SDV *** antiplatelet adhesion of the formed endothelium on the luminal surface was also *** addition,this S-SDV had sufficient mechanical properties(burst pressure,suture retention,leakage test)for *** believe that the S-SDV could address the challenges of conventional SDVs:notably,endothelial formation and mechanical *** particular,the S-SDV can be designed simply as a free-form structure with a desired pore *** endothelial formation through the pore is easy even in free-form con-structs,it is expected to be useful for endothelial formation in vascular structures with branch or curve shapes,and in other tubular tissues such as the esophagus.

关键词： Small diameter vessel Dragging 3D printing Pore control Spontaneous cellular assembly

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Flame-assisted ultrafast synthesis of functionalized carbon nanosheets for high-performance sodium storage

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Carbon Energy 2024年第7期6卷 123-133页

作者： Chen Chen Dong Yan Yew Von Lim Lei Liu Xue Liang Li Junjie Chen Tian Chen Li Youyu Zhu Jiangtao Cai Ying Huang Yating Zhang Hui Ying Yang School of Chemistry and Chemical Engineering Northwestern Polytechnical UniversityXi'anChina Pillar of Engineering Product Development Singapore University of Technology and DesignSingaporeSingapore School of Electrical Engineering Xi'an University of TechnologyXi'anChina International Joint Laboratory of New Energy Materials and Devices of Henan Province School of Physics and ElectronicsHenan UniversityKaifengChina College of Chemistry and Chemical Engineering Xi'an University of Science and TechnologyXi'anChina

The unique structural features of hard carbon(HC)make it a promising anode candidate for sodium-ion batteries(SIB).However,traditional methods of preparing HC require special equipment,long reaction times,and large energy consumption,resulting in low throughputs and *** our contribution,a novel synthesis method is proposed,involving the formation of HC nanosheets(NS-CNs)within minutes by creating an anoxic environment through flame combustion and further introducing sulfur and nitrogen sources to achieve heteroatom *** effect of heterogeneous element doping on the microstructure of HC is quantitatively analyzed by high-resolution transmission electron microscopy and image processing *** with density functional theory calculation,it is verified that the functionalized HC exhibits stronger Na^(+)adsorption ability,electron gain ability,and Na^(+) migration *** a result,NS-CNs as SIB anodes provide an ultrahigh reversible capacity of 542.7mAh g^(-1) at 0.1Ag^(-1),and excellent rate performance with a reversible capacity of 236.4mAh g^(-1) at 2Ag^(-1) after 1200 ***,full cell assembled with NS-CNs as the can present 230mAh g^(-1) at 0.5Ag^(-1) after 150 ***,in/ex situ techniques confirm that the excellent sodium storage properties of NS-CNs are due to the construction of abundant active sites based on the novel synthesis method for realizing the reversible adsorption of Na^(+).This work provides a novel strategy to develop novel carbons and gives deep insights for the further investigation of facile preparation methods to develop high-performance carbon anodes for alkali-ion batteries.

关键词： carbon nanosheets heteroatom doping sodium-ion battery sustainable materials

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Fabricating bio-inspired high impact resistance carbon nanotube network films for multi-protection under an extreme environment

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Nano Research 2024年第9期17卷 7793-7802页

作者： Mingquan Zhu Kailu Xiao Wei Zhang Xudong Lei Yunxiang Bai Shijun Wang Peng Zhang Feng Gao Congying Wang Wenqiang Xu Huiyong Li Xianqian Wu Chao Wang Hui Zhang Luqi Liu Zhong Zhang CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Department of Materials Science and Engineering Texas A&M UniversityCollege StationTexas 77840USA Institute of Mechanics Chinese Academy of SciencesBeijing 100190China School of Astronautics Harbin Institute of TechnologyHarbin150001China CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern MechanicsUniversity of Science and Technology of ChinaHefei 230027China

The fabrication of light-weight,highly impact-resistant,and energy-absorbent materials is urgently demanded in many facets of the society from body armor to aerospace engineering,especially under an extreme *** nanotubes(CNTs),one of the strongest and toughest materials ever found,also have good conductivity,chemical stability,and thermal stability,etc,making them a competitive candidate as building blocks to help achieve the above *** this work,a kind of CNT network was prepared by using chlorosulfonic acid(CSA)to release the internal stress of super-aligned carbon nanotube films(SA-CNTF)and dendritic polyamide amine(PAMAM)to further introduce multiple hydrogen bonds and interlocking *** fabricated bioinspired carbon nanotube network films(PAMAM@C-CNTF)have a high toughness of 45.97 MJ/m3,showing an increase of 420%compared to neat *** importantly,the anti-impact performance of the films(e.g.,with a maximum specific energy absorption of 1.40 MJ/kg under 80-100 m/s projectile impact)is superior to that of conventional protective materials from steel and Kevlar fiber,and also exceeds that of any other reported carbon-based *** hierarchical energy dissipation mechanism was further revealed through experiment and *** functions including intelligent heating/anti-icing,ultraviolet protection,as well as electromagnetic interference shielding properties make these network films have great potential in practical multi-protection applications,especially under an extreme environment.

关键词： carbon nanotubes composites mechanical properties multi-function

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Research Progress of Metal-Based Shielding Materials for Neutron and Gamma Rays

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Acta Metallurgica Sinica(English Letters) 2021年第12期34卷 1609-1617页

作者： Bin Gan Shichang Liu Zhen He Fucai Chen Haoxuan Niu Jingchang Cheng Bo Tan Bo Yu Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of ChinaChengdu610213China State Key Laboratory of Light Alloy Casting Technology for High-End Equipment Shenyang Research Institute of Foundry Co.Ltd.Shenyang110022China

The radiation generated by nuclear reaction is harmful to human body and equipment,thus the radiation shielding materials that employ the shielding ability from neutron and gamma rays are the best candidates according to application situations and radiation *** this paper,the researches of metal-based neutron and gamma rays or multiple purpose shielding materials are systematically summarized,and the respective and principal problems of these materials with respect to shielding effectiveness and other performances,such as corrosion,mechanical properties,manufacture,etc.,are ***,the prospect of shielding materials is outlined,which suggests that the development of highly efficient and multiply functional radiation shielding materials with good environmental compatibility is one of the future development trends.

关键词： Radiation shielding materials Metal-based Boron-containing shielding materials High density alloys

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AND-logic-gate measurement of bisulfite and viscosity using a dual-lock-and-key fluorescent probe

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science China Chemistry 2025年

作者： Tianyu Liang Shuling Liu Yunhe Jiang Mingyu Tian Chengyan Wu Yang Li Tianruo Shen Xiaofei Sun Keli Zhong Lijun Tang School of Chemistry and Materials Engineering Bohai University Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education Dalian Minzu University Science Mathematics and Technology Cluster Singapore University of Technology and Design

This study presents an innovative dual-lock-and-key fluorescent probe engineered for the simultaneous detection of bisulfite and viscosity. The functionalized probe,(E)-2-(1-ethyl-2-(N-methylquinolinevinyl)quinolin-4(1H)-ylidene)malononitrile(QCQNM), was strategically synthesized by conjugating the quinolylmalononitrile and N-methylquinolinium through an ethylene bridge. Within this construction, the N-methylquinolinium selectively targets bisulfite, while the vinyl moiety serves as a responsive rotor for viscosity. Notably, the presence of either sulfite or viscosity alone cannot elicit significant fluorescent responses from the probe. Conversely, concurrent exposure to both bisulfite and viscosity triggers enhanced fluorescent signals,indicative of an “AND” logic gate characteristic. Quantum chemical calculations were further applied to rationalize the working mechanism of the probe. Additionally, the excellent biocompatibility of this probe in cellular imaging experiments highlights its potential for specific mitochondrial imaging by modulating both exogenous/endogenous bisulfite levels alongside viscosity induced by monensin. This novel approach thereby offers a distinctive analytical tool for monitoring the coexistence of viscosity and bisulfite in specific metabolic and physiological contexts.

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Local chemical inhomogeneities in TiZrNb-based refractory high-entropy alloys

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Journal of Materials science & technology 2023年第4期135卷 221-230页

作者： Kaihui Xun Bozhao Zhang Qi Wang Zhen Zhang Jun Ding En Ma Center for Alloy Innovation and Design(CAID) State Key Laboratory for Mechanical Behavior of MaterialsXi’an Jiaotong UniversityXi’an 710049China Science and Technology on Surface Physics and Chemistry Laboratory P.O.Box 9-35Jiangyou 621908China

Multi-principal element solid solutions are prone to develop local chemical inhomogeneities,i.e.,chemi-cal order/clustering and/or compositional ***,these structural details from short-range(first couple of nearest-neighbor atomic shells)to nanometer length scale are very challenging to re-solve in both experimental characterization and computer *** instance,Monte Carlo model-ing based on density-functional-theory calculations is severely limited by the sample size and the sim-ulation steps practical in the *** the cluster expansion approach,here we systemati-cally reveal the local chemical inhomogeneity,including chemical order and compositional fluctuation,in three representative equiatomic TiZrNb-based body-centered cubic refractory high-entropy alloys(HEAs):TiZrNb,TiZrHfNb and ***-Zr pairs are found to exhibit the highest degree of chemical pref-erence among all atomic *** chemical short-range order(CSRO)induces an accompanying com-positional undulation,both extending to characteristic dimensions of the order of one *** chemical inhomogeneity trend uncovered for this series of TiZrNb-based HEAs is expected to impact their mechanical properties;e.g.,incorporating the CSRO effects in a current model significantly improves its agreement with experimental measured yield strength.

关键词： Local chemical inhomogeneity Cluster expansion TiZrNb-based high-entropy alloy Chemical short-range order Compositional fluctuation

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A Review of Intelligent Vehicle Trajectory Tracking Control Methods Based on Overtaking Lane Change Scenarios 8th

A Review of Intelligent Vehicle Trajectory Tracking Control ...

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8th International Conference on Advances in Construction Machinery and Vehicle Engineering, ICACMVE 2023

作者： Yang, Dongzhao Hu, Lin Yi, Xiaojian Zhang, Xin School of Automotive and Mechanical Engineering Changsha University of Science and Technology Changsha410114 China School of Traffic and Transportation Engineering Changsha University of Science and Technology Changsha410114 China Hunan Key Laboratory of Safety Design and Reliability Technology for Engineering Vehicle Changsha University of Science and Technology Changsha410114 China

ISBN: (纸本)9789819718757

In order to achieve safe, comfortable, and stable control of lane-changing trajectories for intelligent vehicles, this paper reviews various trajectory tracking control methods for intelligent vehicles. Focusing on overtaking lane-changing trajectories, the paper provides a comprehensive review of research progress in PID, LQR, MPC, and SMC control methods both domestically and internationally. Striking a balance between addressing the challenges posed by non-integrity and multiple constraints of the vehicle, coping with the time-variability of the vehicle dynamics model, and ensuring the accuracy and computational efficiency of the vehicle model is essential for fostering the continuous development and enhancement of intelligent vehicle technology. © The Author(s) 2024.

关键词： Trajectories

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NUMERICAL ANALYSIS ON FLOW AND HEAT TRANSFER CHARACTERISTICS OF LBE IN NARROW RECTANGULAR CHANNELS 30

NUMERICAL ANALYSIS ON FLOW AND HEAT TRANSFER CHARACTERISTICS...

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30th International Conference on Nuclear Engineering, ICONE 2023

作者： Jiang, Yanming Li, Xiaochang Tian, Ruifeng Lu, Chuan Song, Zhiguang College of Nuclear Science and Technology Harbin Engineering University Harbin China Heilongjiang Provincial Key Laboratory of Nuclear Power Plant Performance and Equipment Harbin Engineering University Harbin China College of Aerospace and Civil Engineering Harbin Engineering University Harbin China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu China

ISBN: (纸本)9784888982566

The lead-bismuth eutectic alloy (LBE) is a candidate coolant for the generation IV liquid metal reactors, and the plate-type fuel assemblies are widely used in the small or research reactors. However, the turbulent heat transfer behaviors of low Prandtl number LBE are quite different from that of ordinary fluids due to its violation in Reynolds analogy, and its flow and heat transfer process in narrow rectangular channels need to be studied with new methods. For this purpose, the authors conduct numerical simulation and analysis of turbulent flow of the LBE in narrow rectangular channel and compare the numerical simulation results with correlation proposed for liquid metal, moreover, the applicability of different near wall treatment methods, turbulence models and turbulent Prandtl number (Prt) models is compared. The focus of the analysis is on the impacts of the collocation of various models on the Nusselt number, the flow redistribution phenomena, as well as the difference in flow and heat transfer capacity in channels. According to the results, the suggested turbulence model and Prt model for different Peclet (Pe) numbers are recommended, besides the flow redistribution phenomenon in the three channels fuel assembly can be ignored, only slightly affects the flow and heat transfer in the narrow rectangular inlet region. © 2023 by JSME.

关键词： Turbulence models

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Research of SSAE-GPC in Coordinated Control System of Nuclear Power Plant 5th

Research of SSAE-GPC in Coordinated Control System of Nuclea...

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5th International Symposium on Software Reliability, Industrial Safety, Cyber Security and Physical Protection of Nuclear Power Plant, ISNPP 2020

作者： Deng, Zhi-Guang Wu, Qian Zhu, Bi-Wei Lv, Xin Zhu, Jia-Liang Xu, Si-Jie Wang, Xue-Mei National Key Laboratory of Science and Technology on Reactor System Design Technology Chengdu610213 China

ISBN: (纸本)9789811634550

For the problem of poor control effect of conventional PID controllers in complex systems, this paper fully combines the advantages of deep learning in feature extraction, regression prediction, and predictive control in dealing with multivariable, strong coupling and other issues. Firstly, the predictive model controller is constructed through the stacked sparse auto-encoder (SSAE) deep network, and then the stepped generalized predictive control (SGPC) is used as the rolling optimization controller. Thus, the SSAE-SGPC neural network predictive controller is built. Finally, a simulation experiment is carried out in the dual-input dual-output multi-variable coordinated control system of nuclear power plant. Through a series of simulations such as set value disturbance, internal disturbance and external disturbance, compared with conventional PID control, SSAE-GPC controller has better control effect. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Controllers

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Stress modulation of electronic and optical properties for two-dimensional Janus M2S2ClF (M=Al, Ga, and In)–Density functional theory

Stress modulation of electronic and optical properties for t...

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2024 International Conference on Optoelectronic Materials and Devices, ICOMD 2024

作者： Guo, Youyou Ma, Xinguo Wang, Jiaqi Wu, Yingtao School of Science Hubei University of Technology Wuhan430068 China State Key Laboratory of Advanced Technology for Float Glass Bengbu Glass Industrial Design and Research Institute Bengbu233030 China

ISBN: (数字)9781510689046

ISBN: (纸本)9781510689039

The electrical and optical properties of Janus M2S2ClF and its stress modulation function have been systematically studied by first principles method. The stability of the structure was verified by AIMD. The bandgaps of Janus Al2S2ClF, Ga2S2ClF and In2S2ClF under PBE functional are 2.02, 1.03 and 1.22 eV, respectively. The optical parameters show that the Janus Al2S2ClF exhibits high optical absorption coefficient, low reflectance, and low loss function, which has great potential for application in ultraviolet detection and other optoelectronic devices compared with Janus Ga2S2ClF and In2S2ClF. In the strain range of -4% to 4%, it is found that the light absorption coefficient of Janus Al2S2ClF is significantly changed by strain, and the absorption coefficient under -4% stress is 8.9 times that under 4% stress. Meanwhile, the bandgaps of Janus Ga2S2ClF is significantly changed by stress, which can achieve regulation from 0.47 to 2.57eV. Conclusion that the stress has a significant regulatory effect on its electronic and optical properties, which provides a theoretical basis for realizing high performance and controllable optoelectronic devices. © 2025 SPIE.

关键词： Optical depth

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