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White matter regeneration induced by aligned fibrin nanofiber hydrogel contributes to motor functional recovery in canine T12 spinal cord injury

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Regenerative Biomaterials 2022年第1期9卷 260-270页

作者： Zheng Cao Weitao Man Yuhui Xiong Yi Guo Shuhui Yang Dongkang Liu He Zhao Yongdong Yang Shenglian Yao Chuzhong Li Lingyun Zhao Xiaodan Sun Hua Guo Guihuai Wang Xiumei Wang State Key Laboratory of New Ceramics and Fine Processing Key Laboratory of Advanced MaterialsSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Department of Neurosurgery Beijing Tsinghua Changgung HospitalSchool of Clinical MedicineTsinghua UniversityBeijing 102218China Center for Biomedical Imaging Research Tsinghua UniversityBeijing 100084China Department of Orthopedics Dongzhimen HospitalBeijing 100007China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Beijing Neurosurgical Institute Beijing Tiantan HospitalBeijing 100070China

A hierarchically aligned fibrin hydrogel(AFG)that possesses soft stiffness and aligned nanofiber structure has been successfully proven to facilitate neuroregeneration in vitro and in ***,its potential in promoting nerve regeneration in large animal models that is critical for clinical translation has not been sufficiently ***,the effects of AFG on directing neuroregeneration in canine hemisected T12 spinal cord injuries were *** obvious white matter regeneration consisting of a large area of consecutive,compact and aligned nerve fibers is induced by AFG,leading to a significant motor functional *** canines with AFG implantation start to stand well with their defective legs from 3 to 4 weeks postoperatively and even effortlessly climb the steps from 7 to 8 ***,high-resolution multi-shot diffusion tensor imaging illustrates the spatiotemporal dynamics of nerve regeneration rapidly crossing the lesion within 4 weeks in the AFG *** findings indicate that AFG could be a potential therapeutic vehicle for spinal cord injury by inducing rapid white matter regeneration and restoring locomotion,pointing out its promising prospect in clinic practice.

关键词： aligned fibrin hydrogel spinal cord injury white matter regeneration diffusion tensor imaging canine

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Recent Advances in Fibrous materials for Hydroelectricity Generation

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Nano-Micro Letters 2025年第2期17卷 109-133页

作者： Can Ge Duo Xu Xiao Feng Xing Yang Zheheng Song Yuhang Song Jingyu Chen Yingcun Liu Chong Gao Yong Du Zhe Sun Weilin Xu Jian Fang College of Textile and Clothing Engineering Soochow UniversitySuzhou 215123People’s Republic of China National Engineering Laboratory for Modern Silk Soochow UniversitySuzhou 215123People’s Republic of China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200People’s Republic of China Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People’s Republic of China Department of Electrical and Computer Engineering University of MassachusettsAmherstMA 01003USA Department of Materials Imperial College LondonSouth Kensington CampusLondon SW72AZUK College of Textile Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China School of Materials Science and Engineering Shanghai Institute of Technology100 Haiquan RoadShanghai 201418People’s Republic of China

Depleting fossil energy sources and conventional polluting power generation pose a threat to sustainable *** generation from ubiquitous and spontaneous phase transitions between liquid and gaseous water has been considered a promising strategy for mitigating the energy *** materials with unique flexibility,processability,multifunctionality,and practicability have been widely applied for fibrous materials-based hydroelectricity generation(FHG).In this review,the power generation mechanisms,design principles,and electricity enhancement factors of FHG are first ***,the fabrication strategies and characteristics of varied constructions including 1D fiber,1D yarn,2D fabric,2D membrane,3D fibrous framework,and 3D fibrous gel are ***,the advanced functions of FHG during water harvesting,proton dissociation,ion separation,and charge accumulation processes are analyzed in ***,the potential applications including power supply,energy storage,electrical sensor,and information expression are also ***,some existing challenges are considered and prospects for future development are sincerely proposed.

关键词： Hydroelectricity Fibrous material Streaming potential Ion diffusion

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Continuous Basalt Fibers into Fireproof and Thermal Insulation Architectures Using an Additive Manufacturing Manipulator

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SSRN 2023年

作者： Yan, Chunze Shi, Yusheng Su, Bin Liu, Zhufeng Zhang, Lichao Li, Zhaoqing Wang, Changshun Wu, Zhenhua Wu, Siqi Wu, Hongzhi Geng, Peng Chen, Si Liu, Guizhou Yang, Lei Xia, Zhigang State Key Laboratory of Materials Processing and Die & Mould Technology Huazhong University of Science and Technology Wuhan430074 China Engineering Research Center of Ceramic Materials for Additive Manufacturing Ministry of Education Wuhan430074 China Wuhan Zeqing Technology Co. Ltd. Wuhan430074 China School of Transportation and Logistics Engineering Wuhan University of Technology Wuhan430063 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China

The weaving technique used for basalt fibers is suitable for making architectures with a two-dimensional (2D) structure, but in practical applications, three-dimensional (3D) structure architectures are required in many fields. Additive manufacturing (AM) technology is suitable for fabricating 3D complex parts. However, the existing AM technology is only used to process continuous basalt fibers reinforced polymers for mechanical enhancement. Therefore, here, we report the fabrication of continuous basalt fibers with fireproof and thermal insulation performance through the combination of an AM manipulator, two-step precursor infiltration and pyrolysis (PIP) processes. Using SiOC ceramics to fill between continuous basalt fibers will help improve the architectures' fire and thermal insulation performance. In order to reduce the structural defects generated by the first PIP process, the final part with fireproof and thermal insulation performance was fabricated through the second PIP process. We further demonstrated the final part with excellent fireproof and thermal insulation performance. The final part had a shell temperature of 788.8℃ and an internal temperature of about 50℃ under the flame spray gun for the 20 s. By replacing polymers with inorganic materials, our basalt architectures exhibit their potential applications in military, aviation, and civil fireproof and thermal insulation equipment. © 2023, The Authors. All rights reserved.

关键词： 3D printing

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Molecular dynamics study on nano sliding behavior at DLC/AISI 304 interface

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Carbon 2025年 240卷

作者： Huang, Tao Yang, Mai Su, Yibing Han, Yuzhe Li, Qizhong Zhang, Song Goto, Takashi Tu, Rong Zhang, Lianmeng Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory Chaozhou521000 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Hubei Technology Innovation Center for Advanced Composites Wuhan University of Technology Wuhan430070 China New Industry Creation Hatchery Center Tohoku University Sendai980-8579 Japan

Diamond-like carbon (DLC) serves as a prevalent protective coating for stainless steel in various applications, including automotive engines and medical devices, to combat wear and corrosion. This investigation delves into the nanoscale interface friction and mechanical behavior between DLC and polycrystalline austenitic stainless steel. Molecular dynamics simulations were employed to model the sliding interface structure's evolution and friction performance under differing contact pressures and graphitization states. In the friction sliding process, carbon atoms predominantly experience surface structural reorganization with minimal diffusion. The displacement of stainless steel's internal atoms is chiefly driven by deformation rather than diffusion. The study also examines the synergistic impacts of external pressure, structural transformations, and interfacial compounds on the system's friction mechanism. At low contact pressures (≤8 GPa), austenite deformation and recrystallization triggered by friction were noted. Conversely, at high junction pressures (>8 GPa), the interplay of stress and strain induces martensitic transformation in stainless steel and amplifies mechanical mixing with DLC. The α′-martensite proportion correlates positively with contact pressure and friction duration. An uptick in martensite content escalates the system's friction force;however, when the system's friction is governed entirely by martensite, it manifests a stable low friction force. Furthermore, under varied carbon atom hybridization conditions, systems characterized by high sp3 hybridization display increased strain and friction. These insights provide valuable perspectives for improving the research on DLC and stainless steel nano micro interfaces. © 2025

关键词： Austenitic stainless steel

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Enhanced Carbamazepine Removal by Oms-2@Acf During the Activated Sludge Treatment

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SSRN 2023年

作者： Bao, Yongfen Yang, Ning Xiao, Lixi Deng, Yuwei Liu, Yang Wu, Zhiyu Yin, Hang Li, Mengru Pei, Xuanyuan Ye, Yuxuan Pan, Fei School of Stomatology and Ophthalmology Xianning Medical Colloge Hubei University of Science and Technology Xianning437100 China School of Environmental Engineering Wuhan Textile University Wuhan430073 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China

The use of nanomaterials to enhance bioprocessing for the removal of pharmaceuticals and personal care products (PPCPs) has received increasing attention. However, the interactions between nanomaterials and microbial communities are unclear. This study reveals the potential and mechanism of synthesized octahedral molecular sieve and activated carbon fiber (OMS-2@ACF) composites in enhancing the aerobic microbial capacity of sequencing batch reactor (SBR) for the treatment of carbamazepine. In an SBR, a series of doses (0-1.0 g/L) of OMS-2@ACF were introduced to investigate their impact on the treatment of carbamazepine by activated sludge. OMS-2@ACF demonstrated an enhancing effect on the carbamazepine removal performance of the SBR. Furthermore, the SBR reactor with the addition of 1.0 g/L of OMS-2@ACF exhibited the most effective removal of carbamazepine. Illumina high-throughput sequencing revealed that OMS-2@ACF material altered the composition of the microbial community in the SBR, identifying the Comamonas as the key genus contributing most significantly to the community response. Analysis indicated that the presence of OMS-2@ACF material increased metabolic pathways associated with contaminants degradation, resulting in improved treatment performance of the SBR. © 2023, The Authors. All rights reserved.

关键词： Carbon fibers

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In-Situ Growth of Robust and Superhydrophilic Nano-Skin on Electrospun Janus Nanoﬁbrous Membrane Toward Ultra-High Separation Efficiency, Long Cycle Stability, and Antibacterial Activity of Oil/Water Emulsions Separation

SSRN

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SSRN 2023年

作者： Cheng, Bingbing Yan, Song Li, Yushan Zheng, Long Wen, Xianjie Tan, Yeqiang Yin, Xianze College of Materials Science and Engineering State Key Laboratory of New Textile Materials & Advanced Processing Technology Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing Engineering Research Center of Ministry of Education for Clean Production of Textile Printing and Dyeing National Local Joint Laboratory for Advanced Textile Processing and Clean Production Wuhan Textile University Wuhan430200 China Department of Anesthesiology The Second People’s Hospital of Foshan City Guangdong Province Foshan528000 China State Key Laboratory of Bio-Fibers and Eco-Textiles Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile Technology Institute of Marine Biobased Materials College of Materials Science and Engineering Qingdao University Qingdao266071 China

It is difficult for composite fibrous membranes to achieve up to 99.5% separation eﬃciency for oil/water emulsions under cycling separation. Herein, a simple method is developed to in-situ grow surperhydrophilic nanocoating on a single electrospun polyvinylidene ﬂuoride (PVDF) fiber surface for fabricating asymmetric wettable Janus PVDF fibrous membranes. Particularly, polysaccharide fluids with zwitterionic polymer chains are generated from the nanoﬁber subsurface in an inside-out way during the electrospinning process, forming the robust superhydrophilic nanocoating (99.5 %), a high flux (up to 4325 L·m-2·h-1·bar-1), antibacterial activity (>99%) and antifoul properties. Moreover, the obtained Janus membranes own surprising flux cycling stability and retained 99.5% separation efficiency after 12 cycles without any treatment, indicating that the multi-arm polysaccharide fluids acted as the water channel in such membrane and accelerated the ﬂow of water molecules. The Janus PVDF composite membranes have potential applications for oily wastewater treatment and water purification in the future. © 2023, The Authors. All rights reserved.

关键词： Wastewater treatment

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Boosting Effective Capacitance of Nano-Grained Batio3-Based Ceramics Via a Precise Core-Shell Structure Optimization Strategy

SSRN

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SSRN 2024年

作者： Zhu, Chaoqiong Cai, Ziming Xiao, Mengjian Jiang, Ying Feng, Peizhong Li, Shiheng Cao, Xiuhua Fu, Zhenxiao Wang, Xiaohui School of Materials Science and Physics China University of Mining and Technology Jiangsu Xuzhou221116 China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing100084 China State Key Laboratory of Advanced Materials and Electronic Components Guangdong Fenghua Advanced Technology Holding Co. Ltd. Guangdong Province Zhaoqing526000 China

Under the trend of miniaturization of multilayer ceramic capacitors (MLCCs), thinner dielectric layers withstood a higher electric field will suffer larger deterioration in capacitance. Thus, it is urgent to improve the DC-bias stability and maintain a considerable effective capacitance under high electric fields to match the requirements of high-end MLCCs. In this work, a strategy of regulating the DC-bias performance via the core-shell structure modulation is proposed. Both numercial predictions and experimental verifications show that the DC-bias performance of core-shell structured ceramic samples can be significantly optimized under the double action of shell thickening and shell dielectric constant increasing, achieving considerable dielectric constant and DC-bias stability simultaneously. The Dy-Mg-co-doping BT-based ceramics with an average grain size about 180nm successfully achieved an outstanding DC-bias performance, realizing a high dielectric constant about 2000 together with a low DC-bias attenuation coefficient of -23.6%@4 kV/mm and guaranteeing a high effective capacitance especially in high fields. © 2024, The Authors. All rights reserved.

关键词： Finite element method

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Ultra-high-amplitude Peregrine solitons induced by helicoidal spin-orbit coupling

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Physical Review Research 2024年第3期6卷 L032036-L032036页

作者： Cui-Cui Ding Qin Zhou B. A. Malomed Research Group of Nonlinear Optical Science and Technology Research Center of Nonlinear Science School of Mathematical and Physical Sciences State Key Laboratory of New Textile Materials and Advanced Processing Technologies Department of Physical Electronics School of Electrical Engineering Faculty of Engineering and the Center for Light-Matter University Instituto de Alta Investigación

In the framework of the model of a spatially nonuniform Bose-Einstein condensate with helicoidal spin-orbit (SO) coupling, we find abnormal Peregrine solitons (PSs) on top of flat and periodic backgrounds, with ultrahigh amplitudes. We explore the roles of the SO coupling strength and helicity pitch in the creation of these anomalously tall PSs and find that their amplitude, normalized to the background height, attains indefinitely large values. The investigation of the modulation instability (MI) in the same system demonstrates that these PSs exist in a range of relatively weak MI, maintaining the feasibility of their experimental observation.

关键词： Solitons

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Nir-Response Amorphous Feooh Anchored Bio2-X for Chlorophenols Photodegradation Via Molecular Oxygen Activation

SSRN

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SSRN 2023年

作者： Huang, Shengnan Chen, Fengxi Zhu, Deyu Li, Jun Liu, Yunling Chen, Rong State Key Laboratory of New Textile Materials & Advanced Processing Technologies Wuhan Textile University Hubei Wuhan430200 China School of Chemistry and Environmental Engineering Wuhan Institute of Technology Donghu New & High Technology Development Zone Hubei Wuhan430205 China Henan Institute of Advanced Technology Zhengzhou University Zhengzhou450002 China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin University Jilin130012 China

Chlorophenols (CPs) are universal and toxic pollutants in nature, as they have been widely detected in surface water, groundwater, sediment, ambient air, soil, and the human body. In this work, novel FeOOH@BiO2-x binary heterostructure composites with UV-Vis-NIR full-spectrum response were successfully constructed by anchoring highly dispersed amorphous FeOOH on BiO2-x nanosheets. A series characterization indicated the binary components were successfully obtained. The FeOOH@BiO2-x photocatalysts exhibited highly enhanced photocatalytic activity for the degradation of chlorophenols under UV-Vis-NIR full-spectrum irradiation. The amorphous FeOOH could effectively broaden the light response range, modulate the energy band structure and promote the separation and transfer of photogenerated electron-holes pairs, thus boosting the activation of molecular oxygen to generate •O2-. Furthermore, FeOOH@BiO2-x maintained excellent photocatalytic performance upon real solar light of varied irradiance for consecutive 7 days, indicative of great potential towards phenolic pollutants degradation in water. The redox couples of Fe3+/Fe2+ and Bi(3+x)+/Bi3+ also accelerate the efficient generation of reactive oxygen species over FeOOH@BiO2-x with improved durability. This work not only contributes to the design of full-spectrum responsive photocatalysts, but also provides a rational strategy for molecular oxygen activation towards the elimination of emerging contaminants. © 2023, The Authors. All rights reserved.

关键词： Bismuth compounds

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Enhanced Flexoelectric and Piezoelectric Pairing of Bent Polyvinylidene Fluoride (Pvdf) Membrane with Two-Dimensional (2d) Stannic Sulfide-Bismuth Oxychloride (Sns2-Biocl) Heterojunction

SSRN

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SSRN 2024年

作者： Li, Wen-Ming Zhang, Hui Dai, Chen-Min Miao, Jiao-Jiao Fan, Wei Song, Qing-Wen Xia, Liang-Jun Xu, Wei-Lin Key Laboratory of Functional Textile Material and Product of Ministry of Education School of Textile Science and Engineering Xi'an Polytechnic University Xi’an710048 China Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application School of Physical Science and Technology Suzhou University of Science and Technology Suzhou215009 China Interdisciplinary Research Center of Biology & Catalysis School of Life Sciences Northwestern Polytechnical University Xi’an710072 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China

In this study, n-type stannic sulfide (SnS2) nanosheets and p-type bismuth oxychloride (BiOCl) nanosheets prepared by hydrothermal method are utilized to construct the heterostructure SnS2-BiOCl composite through ultrasonication and grinding procedures. The piezoelectric SnS2-BiOCl heterojunction nanosheets are incorporated into the ferroelectric polyvinylidene fluoride (PVDF) membrane to fabricate the PVDF-based SnS2-BiOCl (PVDF-SnS2-BiOCl) flexoelectric strain sensor. The optimal amount of SnS2-BiOCl heterojunction in the PVDF-SnS2-BiOCl membrane is determined. A thorough analysis is conducted on the impact of bending curvature, frequency of bending, the size and thickness of the membrane, water flapping, underwater bending, resistance to fatigue from repeated bending, and resistance to corrosions from acid and alkali on the membrane's output current and voltage. The experimental and density functional theory (DFT) calculation results indicate that the PVDF-SnS2-BiOCl(2:1)-10% membrane, functioning as a smart strain sensor, has the ability to monitor human joint movements and water fluctuations in different situations. Additionally, it can be used as a coating for polyester and linen fabrics and can be connected in series or in parallel. The experimental findings align closely with the results obtained from DFT calculations. The outcomes demonstrate that the PVDF-SnS2-BiOCl membrane strain sensor, which is highly flexible, sensitive, and attachable, is well-suited for smart wearable electronic materials. © 2024, The Authors. All rights reserved.

关键词： Heterojunctions

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