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Novel synthesis approaches for new structures in confined space inspired by natural structure-forming processes

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Journal of Materiomics 2017年第2期3卷 83-95页

作者： Hang Ping Hao Xie Zhengyi Fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China School of Chemistry Chemical Engineeringand Life ScienceWuhan University of TechnologyWuhan430070China

In living organisms,confined space with specific chemical composition and elaborate spatial distribution regulates the formation of natural structures.Learning from the natural structure-forming process,novel synthesis approaches in deliberated confined systems have been proposed for obtaining designed structures.Artificial confined systems can effectively regulate the synthesis of materials with defined structures according to the geometry of confinements.Collagen fibrils provide biological confinements for the formation of hierarchical structure with periodic arrangement.Genetically engineered living organisms with designed confinements can direct the synthesis of three-dimensional nanostructures.More novel structures will be rationally fabricated in the future with the aid of deeper understanding of biological processes.

关键词： Bioprocess-inspired fabrication Natural structure-forming processes Confined space New structures

Bioinspired Additive Manufacturing of Hierarchical Materials: From Biostructures to Functions

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Research 2024年第1期2023卷 533-559页

作者： Jingjiang Wei Fei Pan Hang Ping Kun Yang Yanqing Wang Qingyuan Wang Zhengyi Fu Institute for Advanced Materials Deformation and Damage from Multi-Scale Institute for Advanced StudyChengdu UniversityChengdu 610106P.R.China Department of Chemistry University of BaselBasel 4058Switzerland State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070P.R.China College of Polymer Science and Engineering Sichuan UniversityChengdu 610065P.R.China

Throughout billions of years,biological systems have evolved sophisticated,multiscale hierarchical structures to adapt to changing environments.Biomaterials are synthesized under mild conditions through a bottom-up self-assembly process,utilizing substances from the surrounding environment,and meanwhile are regulated by genes and proteins.Additive manufacturing,which mimics this natural process,provides a promising approach to developing new materials with advantageous properties similar to natural biological materials.This review presents an overview of natural biomaterials,emphasizing their chemical and structural compositions at various scales,from the nanoscale to the macroscale,and the key mechanisms underlying their properties.Additionally,this review describes the designs,preparations,and applications of bioinspired multifunctional materials produced through additive manufacturing at different scales,including nano,micro,micro-macro,and macro levels.

关键词： materials. structures utilizing

Synthesis Approach and Adsorption Properties of SiOC Nanocomposite by Chitin Templating

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Journal of Wuhan University of Technology(Materials Science) 2022年第6期37卷 1041-1047页

作者： HUANG Yaoxuan ping hang 王堃傅正义 State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Using chitin as the templating material,we obtained layered nanocomposites like shrimp or crab shells via a sol-gel self-assembly process.SEM images show a layered structure and XRD patterns present a typical peak of chitin,which indicates the templating role of chitin in the as-received hybrid samples.Additionally,the layer spacing of chitin/silica hybrid materials is reduced with increasing content of silica.After the heat treatment for carbonization,layered SiOC nanocomposites with mesoporous structures were obtained and showed good dye adsorption performance.The present study demonstrates a reliable and self-assembly synthesis technique for the development of advanced high-performance nanocomposites with biomimetic nanostructures.

关键词： chitin sol-gel method self-assembly biomimetic structure SiOC nanocomposite

Bioprocess inspired formation of calcite mesocrystals by cation-mediated particle attachment mechanism

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National Science Review 2023年第4期10卷 159-168页

作者： Qihang Wang Bicheng Yuan Wenyang Huang Hang Ping Jingjing Xie Kun Wang Weimin Wang Zhaoyong Zou Zhengyi Fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei Longzhong Laboratory

Calcite mesocrystals were proposed, and have been widely reported, to form in the presence of polymer additives via oriented assembly of nanoparticles. However, the formation mechanism and the role of polymer additives remain elusive. Here, inspired by the biomineralization process of sea urchin spine comprising magnesium calcite mesocrystals, we show that calcite mesocrystals could also be obtained via atachment of amorphous calcium carbonate(ACC) nanoparticles in the presence of inorganic zinc ions.Moreover, we demonstrate that zinc ions can induce the formation of temporarily stabilized amorphous nanoparticles of less than 20 nm at a significantly lower calcium carbonate concentration as compared to pure solution, which is energetically beneficial for the atachment and occlusion during calcite growth. The cation-mediated particle atachment crystallization significantly improves our understanding of mesocrystal formation mechanisms in biomineralization and offers new opportunities to bioprocess inspired inorganic ions regulated materials fabrication.

关键词： nonclassical crystallization mesocrystal calcium carbonate zinc ion particle attachment

Modeling the Degradation Effects of Autophagosome Tethering Compounds

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Neuroscience Bulletin 2021年第2期37卷 255-260页

作者： hang Zhang ping An Yiyan Fei Boxun Lu Department of Optical Science and Engineering Shanghai Engineering Research Center of Ultra-Precision Optical ManufacturingKey Laboratory of Micro and Nano Photonic Structures(Ministry of Education)Fudan UniversityShanghai 200433China State Key Laboratory of Medical Neurobiology and Ministry of Education Frontiers Center for Brain Science School of Life SciencesFudan UniversityShanghai 200438China

Dear Editor,The selective degradation of specific pathogenic proteins provides exciting strategies for drug discovery.Emerging new concepts such as proteolysis-targeting chimeras and autophagosome-tethering compounds(ATTECs)are based on the design of"molecular glues"or bifunctional chimeric compounds that tether the target protein(protein of interest,POI)to a specific component of the proteindegradation machinery(PDM)[1-3].

关键词： Auto Effects some

Bioprocess-inspired preparation of silica with varied morphologies and potential in lithium storage

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Journal of Materials Science & Technology 2021年第13期72卷 61-68页

作者： Fuqiang Wan Wenxuan Wang Zhaoyong Zou Hao Xie Hang Ping Zhengyi Fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China School of Chemistry Chemical Engineeringand Life ScienceWuhan University of TechnologyWuhan430070China

As one of the most delicate bioprocesses in nature,biosilicification is closely related to biosilica with various morphologies,and has provided abundant inspiration to materials synthesis.In the present study,to explore the biosilica formation process and fabricate silica with an exquisite microstructure for lithiumion battery(LIB)electrodes,a bacterial phage(M13)is used as a biotemplate to synthesize silica with diverse morphologies:cylinders,hexagonal prisms,assemblies of smaller cylinders and nanowires.A facile ethanol bath method is conducted to coat the nanowires with nitrogen-containing carbon and carbon-coated SiO_(2) nanowires with mesochannels(C@msSiO_(2) NWs)are first used as anode materials for LIBs.Attributed to the uniform carbon coating and parallel mesochannel structure,the electronic conductivity and capacity to accommodate volume variations were significantly improved.In the electrochemical perfo rmance test,the composites calcined at 750℃(C@msSiO_(2) NWs-750)show an impressive capacity of 653 mA h g^(-1) at a current density of 500 mA g^(-1) and stability(1000 cycles).In view of the electrochemical test outcomes,the prepa ration of a sophisticated structure with an outstanding potential is easily achieved via a biomimetic strategy.

关键词： Biomimetic preparation Biosilicification M13 phage Silica nanowires Mesochannel

Influence of non-iso-velocity casting on flow-field index of a 41-ton six-strand Tundish by physical and numerical modeling

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Journal of Iron and Steel Research(International) 2023年第1期30卷 51-63页

作者： hang-hang Zhu Min Wang Cheng Yao Zhong-liang Wang Xiao-liang Wang Yan-ping Bao State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Technical Support Center for Prevention and Control of Disastrous Accidents in Metal Smelting Beijing 100083China Fengbao Special Steel Co. Ltd.Linzhou 456552HenanChina

The flow-field index in a 41-ton six-strand tundish is considered through adjusting the ratio of the casting velocity between the strands to eliminate the negative impact of iso-velocity casting in multi-strand tundish on the consistency of each strand due to the large ratio of length to width with narrow shape structure,resulting in poor consistency of each strand.In particular,the response time of strand-1 and strand-6 is relatively long,which affects the uniformity of the temperature field and flow field of the entire tundish.On the basis of verifying that the error between the numerical simulations and hydraulic experiments is less than 6%,six cases with the casting velocity ratio changing from 0.8 to 1.3(with an interval of 0.1)are considered by calculation of numerical models.It is concluded that the consistency of each flow can be obviously improved by increasing the casting velocity ratio between side-strand and middle-strand.With increasing the casting velocity ratio,the flow field in the tundish became much active,the temperature field presented well uniformity,and the tracer concentration distribution in local dead zones was improved.

关键词： Six-strand tundish Non-iso-velocity casting Casting velocity ratio Residence time distribution curve Tracer concentration

Development of Digital Stereotaxic Instrument for Pigeons(Columba Livia)

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Journal of Bionic Engineering 2022年第4期19卷 1003-1013页

作者： Xinyu Liu Yanna ping Dongyun Wang hang Xie Li Shi School of Intelligent Manufacturing Huanghuai UniversityZhumadian 463000China Henan Engineering Reseacrh Center of Intelligent Human-Machine Interaction Equipment Huanghuai UniversityZhumadian 463000China Department of Automation Tsinghua UniversityBeijing 100084China

Stereotaxic instrument is an indispensable tool for numerous types of neuroscience studies and is routinely performed in neuroscience laboratories as part of a variety of experimental procedures.Due to the development of robotics and automation,the stereotaxic instrument for rodents has made great progress,while it is relatively backward and scarce for birds.A digital stereotaxic instrument for pigeons(Columba livia),a classic animal model for learning,memory and cognition,was developed in this study.Its performance was verified from three aspects including stereotaxic accuracy,stereotaxic stability and stereotaxic reproducibility.The developed stereotaxic instrument has the following characteristics:(1)a digital positioning system was used,which is characterized by high stereotaxic accuracy;(2)a novel head-fixation system was developed to increase the adaptability of head-fixation;(3)a four-point fixation method was suggested,improving the stability of head-fixation;(4)the stereotaxic instrument has strong versatility,which can be suitable for a wide variety of birds.Moreover,the proposed stereotaxic instrument has better positioning accuracy and stability,which will promote the study of neural mechanisms for pigeons.

关键词： Pigeons Stereotaxic instrument Digital positioning system Head fixation system Reproducibility

Strength and failure characteristics of brittle jointed rock-like specimens under uniaxial compression:Digital speckle technology and a particle mechanics approach

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International Journal of Mining Science and Technology 2018年第4期28卷 662-670页

作者： Rihong Cao hang Lin ping Cao School of Resources and Safety Engineering Central South University State Key Laboratory for Geo Mechanics and Deep Underground Engineering China University of Mining & Technology

The strength and failure characteristics of most natural rock mass are influenced by discontinues such as fissures, joints, and weak surfaces. In the present study, the strength and failure behavior of ubiquitousjoint rock-like specimens under uniaxial loading have been investigated by DIC(digital image correlation) and discrete element numerical method(PFC2 D). The results are obtained. Firstly, the UCSJof specimens with c = 15° or 30° shows similar tendency while a goes from 0° to 75°. With c = 45° or 60°, the UCSJof specimens increases when a goes from 0° to 30° and decreases after a goes beyond 30°. With c = 75°, the peak UCSJvalue is reached when a = 0°. The UCSJvalue shows an increasing trend when a goes from 60° to 75°. Secondly, the ubiquitous-joint specimens present different failure modes for various levels of a and c(b-a). Based on the experimental results, the failure mode of ubiquitous-joint specimens can be classified into three categories: stepped path failure, failure through parallel plane, and failure through cross plane.

关键词：标本粒子力学特征单轴技术点缀岩石连接