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NO_(2) gas sensor with high selectivity and fast response based on Pt-loaded nanoporous GaN

International Journal of Minerals,Metallurgy and Materials 2025年第4期32卷 964-972页

作者： Dan Han Xiaoru Liu Donghui Li Jiexu Shi Yu Wang Yuxuan Wang Hongtao Wang Shengbo Sang Shanxi Key Laboratory of Micro/Nano Sensors&Artificial Intelligence Perception College of Integrated CircuitsTaiyuan University of TechnologyTaiyuan030024China Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education Taiyuan University of TechnologyTaiyuan 030024China Shanxi Research Institute of 6D Artificial Intelligence Biomedical Science Taiyuan 030032China

In this work,we realized a room-temperature nitrogen dioxide(NO_(2))gas sensor based on a platinum(Pt)-loaded nanoporous gallium nitride(NP-GaN)sensing material using the thermal reduction method and coreduction with the catalysis of *** gas sensor gained excellent sensitivity to NO_(2) at a concentration range of 200 ppm to 100 ppb,benefiting from the loading of Pt nanoparticles,and exhibited a short response time(22 s)and recovery time(170 s)to 100 ppm of NO_(2) at room temperature with excellent selectivity to NO_(2) compared with other *** phenomenon was attributed to the spillover effect and the synergic electronic interaction with semiconductor materials of Pt,which not only provided more electrons for the adsorption of NO_(2) molecules but also occupied effective sites,causing poor sites for other *** low detection limit of Pt/NP-GaN was 100 ppb,and the gas sensor still had a fast response 70 d after ***,the gas-sensing mechanism of the gas sensor was further elaborated to determine the reason leading to its improved *** significant spillover impact and oxygen dissociation of Pt provided advantages to its synergic electronic interaction with semiconductor materials,leading to the improvement of the gas properties of gas sensors.

关键词： nanoporous gallium nitride platinum nitrogen dioxide gas sensor

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Antibacterial Properties of Carbon Fiber/Polyether Ether Ketone artificial Bone Composites Modified by Black Phosphorus Coating Assisted by Wet Chemical Nitration Surface Treatment

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Journal of Bionic Engineering 2025年第2期22卷 838-850页

作者： Luxiao Sang Hao Li Runze Shi Wen Qin Tong Xing Shengnan Qin Aoqun Jian Shanxi Key Laboratory of Micro Nano Sensors and Artificial Intelligence Perception College of Physics and Optoelectronic EngineeringTaiyuan University of TechnologyTaiyuan030024China Department of Materials Science and Engineering Shanxi Institute of TechnologyYangquan045000China The Fifth Clinical Medical College of Shanxi Medical University Shanxi Provincial People’s HospitalTaiyuan030012China

The poor surface antibacterial properties are one of the important factors limiting the application of Carbon Fibers Reinforced Polyetheretherketone (CFR-P) composites as artificial bone replace materials. Some of the Two-Dimensional (2D) nanomaterials with unique lamellar structures and biological properties have been demonstrated to have excellent antibacterial properties. Antibacterial properties can be improved by feasible chemical strategies for preparing 2D nanomaterials coating on the surface of CFR-P. In this work, Black Phosphorus (BP) coating was prepared on the originally chemically inert CFR-P surface based on wet chemical pretreatment. The physical and chemical properties, including surface microstructure, chemical composition and state, roughness and hydrophilicity were characterized. The antibacterial ratios against Staphylococcus aureus (S. aureus), Escherichia coli (E. coli), and Streptococcus mutans (S. mutans) were evaluated. The results indicated that hydrophilicity of BP coating on CFR-P was significantly higher compared to that of the pure CFR-P. Wet chemical pretreatment using mixed acid reagents (concentrated sulfuric acid and concentrated nitric acid) introduced hydroxyl, carboxyl and nitro groups on CFR-P. The BP coating exhibited the antibacterial rate of over 98% against both S. aureus and E. coli. In addition, the antibacterial rate of BP coating against the main pathogenic bacteria of dental caries, Streptococcus mutans, reached 45%.

关键词： Carbon fiber reinforced peek composites Surface modification Black phosphorus microstructure Antibacterial property

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3D bioprinting of a dermal scaffold for full-thickness skin tissue regeneration

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Bio-Design and Manufacturing 2025年第1期8卷 68-84,I0039-I0041页

作者： Lu Han Zixian Liu Meng Li Zhizhong Shen Jianming Wang Shengbo Sang Shanxi Key Laboratory of Micro Nano Sensors&Artificial Intelligence Perception College of Electronic Information and Optical EngineeringTaiyuan University of TechnologyTaiyuan 030024China Key Laboratory of Advanced Transducers and Intelligent Control System of the Ministry of Education Taiyuan University of TechnologyTaiyuan 030024China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030024China Shanxi Research Institute of 6D Artificial Intelligence Biomedical Science Taiyuan 030031China General Hospital of TISCO Taiyuan 030809China

Dermal substitutes have provided a template for the regeneration and reconstruction of the ***,the healed skin tissue often exhibits abnormal morphology and functionality,including scarring and *** this study,a composite bioink composed of methacrylated gelatin(GelMA)and chitosan oligosaccharide(COS)was proposed for printing a dermal scaffold using digital light processing(DLP)*** GelMA/COS bioink exhibited suitable porosity,swelling,degradation rate,and mechanical *** inclusion of COS demonstrated antibacterial effects against both Gram positive and Gram-negative bacteria,while simultaneously fostering the proliferation of human dermal fibroblasts(HDFs).Additionally,the application of COS could effectively reduce the expression levels of fibrosis-related genes,such as collagen I,collagen III,and fibronectin *** three-dimensionally printed cell-laden dermal scaffold exhibited excellent shape fidelity and high cellular viability,facilitating the extension of HDFs along the scaffold and the simultaneous secretion of extracellular matrix ***,the HDF-laden dermal scaffold transplanted into full-thickness skin defect sites in nude mice was shown to accelerate wound closure,reduce inflammation,and improve wound ***,the DLP-printed dermal scaffold provides an appealing approach for effectively treating full-thickness skin defects in clinical settings.

关键词： 3D printing Dermal scaffold Photo-cross-linking Skin tissue regeneration

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Antimicrobial peptide-ZIF8 embedded silk protein-lysozyme composite films: A promising multifunctional solution for infected bone regeneration

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International Journal of Biological Macromolecules 2025年第PT 1期311卷 143553页

作者： Shen, Xiaotong Wang, Jiali Cao, Bowen Wang, Menghan Yang, Hao Fu, Qiang Han, Pengde Lin, He Zhang, Xiaojun Yin, Chen Lan, Jinping Sang, Shengbo Huang, Yong College of Lab Medicine Life Science Research Centre Key Laboratory of Biomedical Materials of Zhangjiakou Hebei North University Zhangjiakou075000 China Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Taiyuan University of Technology Taiyuan030600 China School of Medicine Northwest University Xi'an710069 China Key Laboratory for Green Chemical Process of Ministry of Education Wuhan Institute of Technology Wuhan430205 China School of Materials Science and Engineering Yancheng Institute of Technology Yancheng224051 China School of Chemistry and Materials Science Ludong University Yantai264025 China Zhangjiakou Municipal Water Supply Co. Ltd. Zhangjiakou075000 China

Bacterial infections as well as delayed osseointegration have always been clinical challenges for titanium-based orthopedic implants, and effective solutions are urgently needed. In this study, we cleverly utilized silk protein and lysozyme (SF-Lys) nanofilms as carriers, and coated metal-organic frameworks (ZIF8@P) encapsulated with antimicrobial peptides (P) onto titanium surfaces to construct a pH-responsive SF-Lys/ZIF8@P multifunctional coating. The coating demonstrated good biosafety, hemocompatibility, corrosion resistance, and hydrophilicity. Based on the synergistic effect of P with Zn2+, its inhibition rate of both E. coli and S. aureus reached >90 %. The coating was able to effectively induce RAW264.7 to M2-type polarization and remodel the anti-inflammatory microenvironment. In addition, the coating induced endothelial cell migration as well as lumen formation, accelerating the vascularization of HUVEC. Specifically, the coating was able to effectively differentiate MC3T3-E1 into osteoblasts by further stimulating the production of genes and proteins linked to osteogenesis. More importantly, the coating demonstrated excellent antibacterial, anti-inflammatory, vascularization and bone repair capabilities in animal models, which comprehensively solved the key problems faced by titanium implants in practical applications. In conclusion, the SF-Lys/ZIF8@P coating provides a comprehensive and promising solution for infected bone repair, with significant clinical prospects. © 2025 Elsevier B.V.

关键词： Peptides

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3D printed-electrospun PCL/hydroxyapatite/MWCNTs scaffolds for the repair of subchondral bone

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Regenerative Biomaterials 2023年第1期10卷 294-305页

作者： Yanyan Cao Lei Sun Zixian Liu Zhizhong Shen Wendan Jia Peiyi Hou Shengbo Sang College of Information Science and Engineering Hebei North UniversityZhangjiakou 075000China Shanxi Key Laboratory of Micro Nano Sensors&Artificial Intelligence Perception College of Information and ComputerTaiyuan University of TechnologyTaiyuan 030024China Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education Taiyuan University of TechnologyTaiyuan 030024China Shanxi Research Institute of 6D Artificial Intelligence Biomedical Science Taiyuan 030031China

Osteochondral defect caused by trauma or osteoarthritis exhibits a major challenge in clinical treatment with limited symptomatic effects at *** regeneration and remodeling of subchondral bone play a positive effect on cartilage regeneration and further promotes the repair of osteochondral *** use of the strengths of each preparation method,the combination of 3D printing and electrospinning is a promising method for designing and constructing multi-scale scaffolds that mimic the complexity and hierarchical structure of subchondral bone at the microscale and nanoscale,*** this study,the 3D printed-electrospun poly(ɛ-caprolactone)/nano-hydroxyapatites/multi-walled carbon nanotubes(PCL/nHA/MWCNTs)scaffolds were successfully constructed by the combination of electrospinning and layer-by-layer 3D *** resulting dual-scale scaffold consisted of a dense layer of disordered nanospun fibers and a porous microscale 3D scaffold layer to support and promote the ingrowth of subchondral ***,the biomimetic PCL/nHA/MWCNTs scaffolds enhanced cell seeding efficiency and allowed for higher cell-cell interactions that supported the adhesion,proliferation,activity,morphology and subsequently improved the osteogenic differentiation of bone marrow mesenchymal stem cells in ***,this study elucidates that the construction of 3D printed-electrospun PCL/nHA/MWCNTs scaffolds provides an alternative strategy for the regeneration of subchondral bone and lays a foundation for subsequent in vivo studies.

关键词： additive manufacturing 3D printing electrospinning subchondral bone

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Development of the Flexible Tactile Sensor for Safe Human-Robot Interaction 12

Development of the Flexible Tactile Sensor for Safe Human-Ro...

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12th International Conference on CYBER Technology in Automation, Control, and Intelligent Systems, CYBER 2022

作者： Xia, Xinkai Ma, Huanzhou Zhang, Fan Sang, Shengbo Yang, Kun Taiyuan University of Technology Shanxi Key Laboratory of Micro Nano Sensors and Artificial Intelligence Perception College of Information and Computer Taiyuan030024 China

ISBN: (数字)9781665472678

ISBN: (纸本)9781665472678

With the development of industrialization, more and more robots are added to work with hu-man. However, safety accidents occur frequently in human-robot collaborative scenario. In this article, the flexible tactile sensor is designed to promote the security performance of the collaborative robot. The sensor is made by sponge mixed with graphene and it can convert the pressure of the contact surface into a resistance signal accurately. The sensing unit of the sensor shows the correspondence between the input force and output resistance. In addition, a tactile acquisition system is designed to sample pressure data of the sensor. Results of the human-robot interaction experiments indicate that the proposed flexible tactile sensor responds quickly and it can provide robots with reliable perception capability. © 2022 IEEE.

关键词： Electric resistance

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CS/Gel/MWCNTs Conductive Scaffolds Assisted by Electrical Stimulus for Skin Tissue Engineering

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Biotechnology and Bioengineering 2025年 2025 May 15页

作者： Liu, Zixian Ma, Zijun Li, Nini Zhang, Jinyao Li, Meng Han, Lu Cheng, Rong Shen, Zhizhong Han, Dan Sang, Shengbo Shanxi Key Laboratory of Artificial Intelligence & Micro Nano Sensors College of Integrated Circuits Taiyuan University of Technology Shanxi Province Taiyuan China Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education Taiyuan University of Technology Shanxi Province Taiyuan China College of chemistry and chemical Engineering North University of china Shanxi Province Taiyuan China Shanxi Research Institute of 6D Artificial Intelligence Biomedical Science Shanxi Province Taiyuan China

Hydrogel scaffolds show high potential in tissue engineering due to excellent mechanical properties and biocompatibility. However, an inherent lack of conductivity limits its application in areas requiring electrical stimulation. To address this issue, chitosan (CS)/gelatin (Gel) scaffolds were prepared with various concentrations of multi-walled carbon nanotubes (MWCNTs). Results indicated that MWCNT incorporation significantly improved both the electrical conductivity and mechanical strength of the scaffolds, with the CS/Gel/0.3% MWCNTs scaffold demonstrating superior biocompatibility compared to other formulations. Additionally, fibroblasts seeded onto the scaffolds responded positively to electrical stimulation, showing increased proliferation and elevated expression of type I and type III collagen. These findings highlight the potential of CS/Gel/MWCNTs scaffolds to enhance wound healing in skin tissue engineering. © 2025 Wiley Periodicals LLC.

关键词： Fiber bonding

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3D bioprinting of in vitro porous hepatoma models:establishment,evaluation,and anticancer drug testing

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Bio-Design and Manufacturing 2024年第2期7卷 137-152页

作者： Xiaoyuan Wang Zixian Liu Qianqian Duan Boye Zhang Yanyan Cao Zhizhong Shen Meng Li Yanfeng Xi Jianming Wang Shengbo Sang Shanxi Key Laboratory of Micro Nano Sensors and Artificial Intelligence Perception College of Electronic Information and Optical EngineeringTaiyuan University of TechnologyTaiyuan 030024China Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education Taiyuan University of TechnologyTaiyuan 030024China Shanxi Institute of 6D Artificial Intelligence Biomedical Science Taiyuan 030031China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030024China Department of Pathology Shanxi Provincial Cancer HospitalTaiyuan 030024China General Hospital of Taiyuan Iron and Steel Company Taiyuan 030809China

Traditional tumor models do not tend to accurately simulate tumor growth in vitro or enable personalized treatment and are particularly unable to discover more beneficial targeted *** address this,this study describes the use of threedimensional(3D)bioprinting technology to construct a 3D model with human hepatocarcinoma SMMC-7721 cells(3DP-7721)by combining gelatin methacrylate(GelMA)and poly(ethylene oxide)(PEO)as two immiscible aqueous phases to form a bioink and innovatively applying fluorescent carbon quantum dots for long-term tracking of *** GelMA(10%,mass fraction)and PEO(1.6%,mass fraction)hydrogel with 3:1 volume ratio offered distinct pore-forming characteristics,satisfactorymechanical properties,and biocompatibility for the creation of the 3DP-7721 *** analysis and quantitative real-time fluorescence polymerase chain reaction(PCR)were used to evaluate the biological properties of the *** with the two-dimensional culture cell model(2D-7721)and the 3D mixed culture cell model(3DM-7721),3DP-7721 significantly improved the proliferation of cells and expression of tumor-related proteins and ***,we evaluated the differences between the three culture models and the effectiveness of antitumor drugs in the three models and discovered that the efficacy of antitumor drugs varied because of significant differences in resistance proteins and genes between the three *** addition,the comparison of tumor formation in the three models found that the cells cultured by the 3DP-7721 model had strong tumorigenicity in nude *** evaluation of the levels of biochemical indicators related to the formation of solid tumors showed that the 3DP-7721 model group exhibited pathological characteristics of malignant tumors,the generated solid tumors were similar to actual tumors,and the deterioration was *** research therefore acts as a foundation for the application of 3DP-7721 models in drug devel

关键词： 3D bioprinting Hepatoma tumor models Drug screening Antitumor drug development

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Confining PMo12 in flexible nanocages for enhanced electrochemical energy storage

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Chemical Engineering Journal 2025年 515卷

作者： Yan, Yuanyuan Wang, Chongji Chen, Yuhang Wu, Cao Xie, Kezhuo Liu, Zhenyu Zhang, Tianyuan Liu, Weifeng Liu, Xuguang Wang, Tian Chen, Zhaofeng Sang, Shengbo Wang, Meiling College of Materials Science and Engineering Taiyuan University of Technology Taiyuan030024 China Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception College of Electronic Information and Optical Engineering Taiyuan University of Technology Taiyuan030024 China International Laboratory for Insulation and Energy Efficiency Materials College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing211106 China School of Materials Science and Engineering Anhui University of Technology Maanshan243032 China Department of Chemistry University of Washington SeattleWA98195 United States College of Chemistry and Chemical Engineering Taiyuan University of Technology Shanxi Taiyuan030024 China

The confinement can effectively overcome aggregation and detachment of polyoxometalates (POMs) from supports, thereby enhancing their energy storage properties. However, static confinement still inevitably leads to insufficient exposure of active sites, affecting the full stimulation of their activities. Herein, by tailoring the functional groups of the crosslinker, we engineered nanocages with a transition from rigid to flexible structures, enabling dynamic confinement of phosphomolybdic acid (PMo12) in a hybrid hydrogel. Theoretical calculations reveal that compared to rigid nanocages, flexible nanocages with abundant structural configurations enable dynamic confinement of PMo12 without detachment. Moreover, structural flexibility of nanocages stimulates more active sites of PMo12, accelerating proton-coupled electron transfer during the charge/discharge process. Thus, the flexible nanocage-based symmetrical supercapacitor delivers a high power density of 35.0 mW cm−2 at energy density of 0.052 mWh cm−2. This work provides a flexible nanocage confinement strategy for anchoring POMs in energy-related applications. © 2025 Elsevier B.V.

关键词： Capacitor storage

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pH-Responsive silk protein/ZIF-8@bacitracin composite coating on strontium-doped nanorod surface for combating implant-associated infections

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International Journal of Biological Macromolecules 2025年 315卷

作者： Zitong Tian Jiaxin Guan Hui Su Lingdi Guan Hao Yang Chengcheng Xia Pengde Han He Lin Xiaojun Zhang Jinping Lan Haixia Qiao Yong Huang Shengbo Sang College of Lab Medicine Life Science Research Centre Key Laboratory of Biomedical Materials of Zhangjiakou Hebei North University Zhangjiakou 075000 China Key Laboratory for Green Chemical Process of Ministry of Education Wuhan Institute of Technology Wuhan 430205 China School of Materials Science and Engineering Yancheng Institute of Technology Yancheng 224051 China School of Chemistry and Materials Science Ludong University Yantai 264025 China School of Medicine Northwest University Xi'an 710069 China Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Taiyuan University of Technology Taiyuan 030600 China

Titanium-based bone repair materials often face bacterial infections, resulting in inflammation and impaired osseointegration. To address this issue, we developed a multifunctional coating by encapsulating bacitracin within a metal-organic framework (ZIF-8@B) and incorporating it into a strontium-doped titanium dioxide nanorod (STN) structure using silk protein (SF). This coating, termed STN-SF/ZIF-8@B, was applied to titanium surfaces. It demonstrated outstanding hydrophilicity, corrosion resistance, hemocompatibility, and biosafety. The synergistic effects of bacitracin and Zn 2+ achieved over 80 % inhibition against both E. coli and S. aureus . Additionally, STN-SF/ZIF-8@B effectively reprogrammed inflammatory macrophages into an anti-inflammatory M2 phenotype. The combined actions of Sr 2+ and Zn 2+ significantly enhanced the migration, lumen formation, and expression of angiogenic growth factors in HUVEC. Moreover, STN-SF/ZIF-8@B upregulated the expression of genes and proteins related to osteogenesis, promoting the osteogenic differentiation of MC3T3-E1 cells. In vivo experiments utilizing a rat bone defect model revealed that STN-SF/ZIF-8@B exhibited superior anti-inflammatory, antibacterial, pro-angiogenic, and osteogenic properties. This study provided a promising approach for the development of advanced biomaterials that simultaneously address infection control, immune modulation, angiogenesis, and bone regeneration, offering significant potential for improving the outcomes of bone defect repair in clinical applications.

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