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Construction of a mineralized collagen nerve conduit for peripheral nerve injury repair

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Regenerative Biomaterials 2023年第1期10卷 81-96页

作者： Guman Duan Chengli Li Xiaoqing Yan Shuhui Yang Shuo Wang Xiaodan Sun Lingyun Zhao Tianxi Song Yongwei Pan Xiumei Wang State Key Laboratory of New Ceramics and Fine Processing Key Laboratory of Advanced Materials of Ministry of EducationSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Department of Orthopedics Beijing Tsinghua Changgung HospitalSchool of Clinical MedicineTsinghua UniversityBeijing 102218China Department of Orthopedics Beijing Changping District HospitalBeijing 102202China Beijing Allgens Medical Science and Technology Co. LtdBeijing 100176China

A new nerve guidance conduits(NGCs)named MC@Col containing Type I collagen(Col)and mineralized collagen(MC)was developed,enhancing mechanical and degradation *** physicochemical properties,the mechanical properties and in vitro degradation behavior were all *** adhesion and proliferation of Schwann cells(SCs)were *** the in vivo experiment,MC@Col NGC and other conduits including Col,chitosan(CST)and polycaprolactone(PCL)conduit were implanted to repair a 10-mm-long Sprague-Dawley rat’s sciatic nerve *** analyses,morphological analyses,electrophysiological analyses and further gait analyses were all evaluated after implantation in 12 *** strength and degradation performance of the MC@Col NGC were improved by the addition of MC in comparison with pure Col *** vitro cytocompatibility evaluation revealed that the SCs had good viability,attachment and proliferation in the MC@*** in vivo results,the regenerative outcomes of MC@Col NGC were close to those by an autologous nerve graft in some respects,but superior to those by Col,CST and PCL *** MC@Col NGC exhibited good mechanical performance as well as biocompatibility to bridge nerve gap and guide nerve regeneration,thus showing great promising potential as a new type of conduit in clinical applications.

关键词： nerve guidance conduit collagen mineralized collagen peripheral nerve regeneration

Orbital-level band gap engineering of RuO₂ for enhanced acidic water oxidation

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Nature Communications 2025年第1期16卷 1-13页

作者： Wang, Xing Pi, Wei Li, Zhaobing Hu, Sheng Bao, Haifeng Xu, Weilin Yao, Na State Key Laboratory of New Textile Materials and Advanced Processing School of Materials Science and Engineering Wuhan Textile University Wuhan 430200 China

Developing efficient and stable oxygen evolution reaction electrocatalysts under acidic conditions is crucial for advancing proton-exchange membrane water electrolysers commercialization. Here, we develop a representative strategy through p-orbital atoms (N, P, S, Se) doping in RuO₂ to precisely regulate the lattice oxygen-mediated mechanism-oxygen vacancy site mechanism pathway. In situ and ex situ measurements along with theoretical calculations demonstrate that Se doping dynamically adjusts the band gap between the Ru-e_g and O-p orbitals during the oxygen evolution reaction process. This modulation accelerates electron diffusion to the external circuit, promotes the lattice oxygen-mediated process, and enhances catalytic activity. Additionally, it facilitates electron feedback and stabilizes oxygen vacancies, thereby promoting the oxygen vacancy site mechanism process and enhancing catalytic stability. The resulting Se-RuO_x catalyst achieves efficient proton-exchange membrane water electrolysers performance under industrial conditions with a minimal charge overpotential of 1.67 V to achieve a current density of 1 A cm⁻² and maintain long-term cyclability for over 1000 h. This work presents a unique method for guiding the future development of high-performance metal oxide catalysts. © The Author(s) 2025.

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Scalable and Fast Electrophoresis-Accelerated Assembly of Chiroptical Carbon Fibers With Multi Functions

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SSRN 2025年

作者： Jiao, Haixing Song, Baiqi Li, Fa Tang, Yuanhan Zhang, Na Zhang, Xiaofang Xu, Weilin State Key Laboratory of New Textile Materials and Advanced Processing Wuhan Textile University Wuhan430200 China School of Transportation Science and Engineering Harbin Institute of Technology Harbin150090 China

Colorful carbon fibers (CFs) with combinations of structural robustness, environmental stability, and advanced functions are very promising in the cutting-edge fields. However, the efficient coloration simultaneously with the functionalization for CFs in a fast, scalable, and sustainable manner remains a grand challenge. In this work, we develop large-area chiroptical CFs with long-ranged chirality decoration via the electrophoresis-accelerated self-assembly of renewable cellulose nanocrystals (CNCs).That leads a cholesteric photonic "cast" conformally and tightly coated on CFs surface in a seamlessly tessellated way to bring chiroptical functionalities and mechanical adaption. The resulting chiroptical CFs not only comprise strong optical properties with controllable and brilliant colors, but also demonstrate impressive opt-mechanical combination against external mechanical forces, hydration effect, and extreme environments. More importantly, chiroptical CFs with customized patterns on the surface can be used as programmable infrared display for encryption and anti-counterfeiting. Those exciting findings extend the potentials of CF materials towards optical encryption, wearable device display, defense, and aerospace special applications. © 2025, The Authors. All rights reserved.

关键词： Cellulose nanocrystals

Scalable and Fast Electrophoresis-Accelerated Assembly of Chiroptical Carbon Fibers With Multi Functions

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SSRN 2025年

关键词： Cellulose nanocrystals

Permeable carbon fiber based thermoelectric film with exceptional EMI shielding performance and sensor capabilities

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Journal of advanced Ceramics 2024年第8期13卷 1119-1131页

作者： Junjie Zhu Chuan Sun Wanlin Feng Mengran Chen Peng-An Zong Chunlei Wan College of Materials Science and Engineering Nanjing Tech UniversityNanjing 211800China Nationai Innovation Institute of Defense Technology Academy of Military Sciences of the People's Liberation Army of ChinaBeijing 100089China Institute of Nuclear Physics and Chemistry Innovation Research Team for Advanced CeramicsChina Academy of Engineering PhysicsMianyang 621900China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Thermoelectric(TE)technologies offer a promising approach for directly converting skin heat into electricity for wearable *** p-type Sb2Tes and n-type BizTes as top-performing materials at room temperature,their rigid inorganic structure,with ultralow moisture permeability,poses challenges in warm and humid conditions,fostering bacterial growth and potential skin *** address this issue,we developed a cross-linked core-shell structure by electrodepositing Sb_(2)Te_(3)(Bi_(2)Te_(3))onto carbon fiber(CF).This architecture significantly improved the electrical conductivity and the Seebeck coefficient,resulting in a remarkable 300-fold increase in the power factor compared to that of pure *** CF/Sb_(2)Te_(3) and CF/Bi2Te films demonstrated optimal power factors of 450 and 121μW·m^(-1)·K^(-2),***,the fabricated films exhibited outstanding moisture permeability,over 3000 g·m^(-2)·d^(-1),exceptional electromagnetic interference shielding efficiency approaching 93 dB,and versatility as sensors for language assistance and respiratory *** attributes underline their broad applicability,emphasizing their suitability for human health protection in diverse scenarios.

关键词： thermoelectric(TE) carbon fiber(CF) Bi_(2)Te_(3) electrodeposition moisture permeability electromagnetic interference shielding

High Transparent and Robust Ionically Conductive Cellulose Hydrogels for Flexible and Antifreezing Strain Sensors

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SSRN 2023年

作者： Li, Xiaoyan Tu, Hu Wang, Peng Liu, Yuncui Shao, Xiaoyu Tan, Sirui Cai, Guangming Zhang, Ruquan State Key Laboratory of New Textile Materials and Advanced Processing Technologies Hubei Key Laboratory of Advanced Textile Materials & Application Key Laboratory of Textile Fiber & Product Ministry of Education Wuhan Textile University Wuhan430200 China

The development of flexible sensors with multifunction such as high transparency, good mechanical properties and durability, biodegradability, excellent antifreezing ability and sensitivity still remains a great challenge. Herein, cellulose hydrogels were constructed from "green" LiOH/urea solvents via chemically–physically double crosslinked strategy. 1,4-butanediol diglycidyl ether as a long-chain chemical crosslinker was used to enlarge the activity domains of cellulose chains of the crosslinked networks in hydrogels, further improving their elasticity, flexibility and durability. During the physically crosslinked process Li ions were retained within the hydrogel and glycerol was introduced, which could effectively improve the hydrogels mechanical properties and significantly enhance its conductivity. At the same time, Li ions and glycerol could form hydrogen bonds with water molecules, greatly enhancing the hydrogel's freeze resistance and water retention. The ionically conductive cellulose hydrogels with high transparence could sensitively monitor the human motions including large motions and subtle actions, as well as the detection of heartbeat rate, pulse beat and body temperature changes and the usage as an electronic skin, which showed great potential for visually monitoring human physiological functions in extreme environments. © 2023, The Authors. All rights reserved.

关键词： Cellulose

Tailored lithium metal/polymer electrolyte interface with LiTa_(2)PO_(8) fillers in PEO-based composite electrolyte

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Rare Metals 2022年第8期41卷 2826-2833页

作者： Bing Huang Zhi-Hong Li Yu-Mei Zhu Yong Che Chang-An Wang Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and EngineeringTianjin UniversityTianjin300072China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing100084China Enpower Energy Corp. Beijing102600China

The unstable Li/PEO-based electrolyte interface in allsolid-state lithium metal batteries usually leads to high interfacial resistance,low Coulombie efficiency and fast lithium dendrites growth even under a low current *** interface composition directly determines the interfacial integrity,dynamic Li^(+)/e^(-)transport processes and the subsequent Li+plating/stripping behavior;thus,it is of significance to regulate the interphase to have better safety and higher energy density for all-solid-state lithium metal ***,by incorporation of Li^+conducting LiTa_(2) PO_(8) fillers in PEO-based polymer electrolyte.

关键词： electrolyte lithium interface

High-Performance Ag_(2)Se/Methyl Cellulose Thermoelectric Composites for Flexible Power Generators

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Energy Material Advances 2024年第1期5卷 275-282页

作者： Zuo Xiao Qiufeng Meng Yong Du Ping Wei Jie Qin Jingyu Chen Zhongchang Wang Per Eklund School of Materials Science and Engineering Shanghai Institute of Technology100 Haiquan RoadShanghai 201418China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China The Center of Functional Materials for Working Fluids of Oil and Gas Field School of New Energy and MaterialsSouthwest Petroleum UniversityChengdu 610500China Sichuan Engineering Technology Research Center of Basalt Fiber Composites Development and Application State Key Laboratory of Oil and Gas Reservoir Geology and ExploitationSouthwest Petroleum UniversityChengdu 610500SichuanChina International Iberian Nanotechnology Laboratory Av.Mestre Jose Veiga s/n4715-330 BragaPortugal Thin Film Physics Division Department of PhysicsChemistry and Biology(IFM)Linköping UniversitySE-58183 LinköpingSweden

Flexible thermoelectric generators(FTEGs)offer a promising solution for powering wearable electronics,while their practical applications are mainly obstructed by the moderate properties of flexible thermoelectric(TE)***,flexible Ag_(2)Se nanowire(NW)/methyl cellulose(MC)composite films were developed via facile screen-printing technology combined with cold pressing and annealing treatment,and a highest power factor of 1,641.58μW m^(-1)K^(-2)at 360 K was *** reasons for the high TE performance of the Ag_(2)Se NW/MC composite films were because,after the annealing treatment,the Ag_(2)Se NWs were sintered to form conductive network structures,the crystallinity of Ag_(2)Se was markedly enhanced,and the content of insulating phase MC in the composite film was *** Ag_(2)Se NW/MC composite film held appreciable flexibility,as its room-temperature power factor(1,312.08μW m^(-1)K^(-2))can retain~93%after bending for 1,000 cycles at a radius of 4 ***,the assembled FTEG consisting of 4 strips can generate a maximal power density of 3.51 W m^(-2)at a temperature difference of 14.1 *** results open an effective and large-scale strategy for fabricating high-performance flexible TE materials and energy-harvesting devices.

关键词： annealing treatment cold pressing Ag Se nanowires methyl cellulose flexible thermoelectric generators ftegs offer thermoelectric composites flexible thermoelectric generators power factor

Fabrication of Aramid Cord Fabric/Titanium Dioxide Polymer Material and its Superhydrophobic Properties

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SSRN 2024年

作者： Li, Xiang Tan, Shanshan Chen, Chunmei Zhang, Aixin Li, Weiwei Ke, Gui Zhen College of Textile Science and Engineering Wuhan Textile University Hubei Wuhan430073 China State Key Laboratory of New Textile Materials and Advanced Processing Technology Wuhan Textile University Hubei Wuhan430200 China

Aramid cord fabric is a novel polymer material with high strength, modulus, low thermal shrinkage, and good dimensional stability. It finds wide applications in marine development, oil exploration, transportation, special tires, and other fields. However, limited research has examined aramid cord fabrics' super-hydrophobic applications. Therefore, constructing a super-hydrophobic aramid cord fabric polymer material is necessary. This study utilized a simple surface sprinkling powder method to scatter titanium dioxide (TiO2) particles onto the rubber surface of aramid cord fabric. Through high-temperature and high-pressure processes, a TiO2/natural rubber (NR) polymer material with a superhydrophobic surface was created. The microstructure of the superhydrophobic surface was examined using scanning electron microscopy (SEM). Energy-dispersive X-ray spectroscopy (EDS) was employed for qualitative analysis of substances on the superhydrophobic surface. Fourier transform infrared spectroscopy was used to understand the nature of surface functional *** hydrophobicity and self-cleaning properties of the surface were evaluated using a contact angle meter and self-cleaning tests, respectively. Additionally, the mechanical durability of the superhydrophobic surface was tested through linear abrasion on sandpaper. The results indicated that increasing the TiO2 particle content enhanced both the hydrophobicity and mechanical durability of the TiO2/NR surface. When the TiO2 mass fraction reached 3%, the static contact angle (CA) of the TiO2/NR surface reached 160.1±3°, and the surface maintained its superhydrophobicity even after 150 abrasion cycles under a pressure of 2 kPa. Furthermore, the TiO2/NR superhydrophobic surface exhibited excellent self-cleaning properties. © 2024, The Authors. All rights reserved.

关键词： Titanium dioxide