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Angiogenesis-osteogenesis coupling and anti-osteoclastogenesis zoledronate intermixed calcium silicate metal-organic/inorganic hybrid coating on biodegradable zinc-based intramedullary nails for osteoporotic fracture healing

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Bioactive materials 2025年第2期44卷 46-67页

作者： Junyu Qian Haotian Qin En Su Jiaming Hou Hui Zeng Tianbing Wang Deli Wang Guojiang Wan Yingqi Chen Department of Bone and Joint Surgery Peking University Shenzhen HospitalShenzhen Peking University-The Hong Kong University of Science and Technology Medical CenterShenzhen518036PR China Institute of Biomedical Engineering College of MedicineKey Laboratory of Advanced Technologies of MaterialsMinistry of EducationSouthwest Jiaotong UniversityChengdu610031PR China Trauma Medicine Center Peking University People’s HospitalBeijing100044PR China

Osteoporotic(OP)fractures remain a tough clinical challenge owing to their impaired healing outcome,which requires novel biomaterials with osteogenicity for effective *** zinc(Zn)is attracting increasing attention for biodegradable intramedullary nails(IMNs)for OP fracture healing thanks to their comprehensive mechanical properties,biosafety,and ***,the multiple biofunctions required for OP fracture healing have not been fully met by ***,a zoledronate(ZA)-mediated calcium-zinc silicate(Ca(Zn)Si)metal-organic/inorganic hybrid coating was fabricated on Zn-based IMN by coordination chemistry driven via interactions between ZA and Ca^(2+)/Zn^(2+)as well as in-situ directional growth of Ca(Zn)Si *** ZA&Ca(Zn)Si hybrid coating exhibited a homogeneous micro/nanostructure with a granular morphology,which prevented premature fracture failure of IMN in rat femur by ameliorating corrosion mode and decreasing degradation rate of the Zn *** importantly,this hybrid coating enabled sustained release of Zn^(2+)/Ca^(2+)/Si4+and ZA in the long term,achieving a remarkable effect on vascularized bone *** coated IMN enhanced angiogenesis-osteogenesis coupling through autocrine and paracrine effects between endothelial cells and bone marrow mesenchymal stem *** was repressed by Zn^(2+)and *** approach offers a new strategy for surface-engineering of biodegradable metals for bone fracture healing.

关键词： Angiogenesis-osteogenesis coupling Anti-osteoclastogenesis Biodegradable zinc Metal-organic/inorganic hybrid coating Intramedullary nail

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Characterizing catalyst function and transformations in the plasma reduction of CO₂ on atomic layer deposition-synthesized catalysts

RSC Applied Interfaces

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RSC Applied Interfaces 2024年第3期1卷 552-563页

作者： Conlin, Samuel K. Mehrabi, Hamed Parette, David N. Nichols, Eva M. Coridan, Robert H. Department of Chemistry and Biochemistry University of Arkansas Fayetteville 72701 AR United States Materials Science and Engineering Program University of Arkansas Fayetteville 72701 AR United States Department of Chemistry University of British Columbia Vancouver V6T 1Z1 BC Canada

The enhancement of CO2 reduction in atmospheric-pressure, non-thermal plasma has been shown using a variety of catalyst systems with ranging composition, particle sizes, and morphologies. Improvements in CO2 conversio...

The enhancement of CO₂ reduction in atmospheric-pressure, non-thermal plasma has been shown using a variety of catalyst systems with ranging composition, particle sizes, and morphologies. Improvements in CO₂ conversion can be attained by choice of catalyst material. However, inhomogeneity in the material distribution arising from the synthesis affects the catalytically active surface area and dielectric environment that modulates the plasma properties near the catalyst. Atomic layer deposition (ALD) can be used to control the composition of ultra-thin layers on support materials. We used ALD to synthesize metal oxide catalyst coatings on high surface area supports. We found that TiO₂ achieved significantly higher yields of CO₂ conversion (to CO and O₂) at low reactor power compared to ZnO or Al₂O₃, materials commonly used as a support for other catalysts. We also observed an unexpected increase in the catalytic activity on ZnO with increasing power. The results here suggest that ALD can unambiguously isolate the catalytic effects of materials in plasma reactors. © 2024 RSC.

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Frequency-dependent phonon-mediated unidirectional magnetoresistance in a metal on an insulator with highly nonequilibrium magnons

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Physical Review B 2023年第14期107卷 L140412-L140412页

作者： Sean E. Sullivan Hwijong Lee Annie Weathers Li Shi Materials Science and Engineering Program The University of Texas at Austin Austin Texas 78712 USA Department of Mechanical Engineering The University of Texas at Austin Austin Texas 78712 USA

Heavy-metal (HM)/magnet bilayers host many magnetoresistance (MR) and spin caloritronic effects. Here, we show that the spin Peltier effect and electron-phonon scattering produce much larger unidirectional MR of an HM on a magnetic insulator than existing theories that neglect the interplay between MR and spin caloritronic effects. By accounting for local nonequilibrium in both the magnon chemical potential and temperature, our analytical model attributes the observed frequency dependence of the spin Peltier MR and the spin Seebeck effect to the reduction of the thermal penetration depth, which approaches the 1−μm-scale magnon spin-diffusion length at high frequencies.

关键词： Magnetic anisotropy Magnetotransport Spin dynamics Spintronics Temperature Thermal conductivity Thermoelectric effects Thermomagnetic effects

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Skeletal interoception and prospective application in biomaterials for bone regeneration

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Bone Research 2025年第1期13卷 1-14页

作者： Long Bai Jilong Li Guangfeng Li Dongyang Zhou Jiacan Su Changsheng Liu Organoid Research Center Institute of Translational MedicineShanghai UniversityShanghaiChina National Center for Translational Medicine(Shanghai)SHU Branch Shanghai UniversityShanghaiChina Wenzhou Institute of Shanghai University WenzhouZhejiangChina Department of Orthopedics Shanghai Zhongye HospitalShanghaiChina Department of Orthopedics Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina Key Laboratory for Ultrafine Materials of Ministry of Education Engineering Research Center for Biomedical Materials of the Ministry of EducationEast China University of Science and TechnologyShanghaiChina

Accumulating research has shed light on the significance of skeletal interoception,in maintaining physiological and metabolic homeostasis related to bone *** review provides a comprehensive analysis of how skeletal interoception influences bone homeostasis,delving into the complex interplay between the nervous system and skeletal *** key focus of the review is the role of various factors such as prostaglandin E2(PGE2)in skeletal health via skeletal *** explores how nerves innervating the bone tissue communicate with the central nervous system to regulate bone remodeling,a process critical for maintaining bone strength and ***,the review highlights the advancements in biomaterials designed to utilize skeletal interoception for enhancing bone regeneration and treatment of bone *** biomaterials,tailored to interact with the body’s interoceptive pathways,are positioned at the forefront of innovative treatments for conditions like osteoporosis and *** represent a convergence of bioengineering,neuroscience,and orthopedics,aiming to create more efficient and targeted therapies for bone-related *** conclusion,the review underscores the importance of skeletal interoception in physiological regulation and its potential in developing more effective therapies for bone *** emphasizes the need for further research to fully understand the mechanisms of skeletal interoception and to harness its therapeutic potential fully.

关键词： homeostasis biomaterials utilize

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X-ray scattering tensor tomography based finite element modelling of heterogeneous materials

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npj Computational materials 2024年第1期10卷 2724-2734页

作者： Robert M.Auenhammer Jisoo Kim Carolyn Oddy Lars P.Mikkelsen Federica Marone Marco Stampanoni Leif EAsp Material and Computational Mechanics Department of Industrial and Materials ScienceChalmers University of TechnologySE-41296 GöteborgSweden Composites Manufacturing and Testing Department of Wind and Energy SystemsTechnical University of DenmarkDK-4000 RoskildeDenmark Institute for Biomedical Engineering University and ETH Zürich8092 ZürichSwitzerland Swiss Light Source Paul Scherrer Institut5232 VilligenSwitzerland Department of Automation and Composite Technologies GKN Aerospace SwedenSE-46138 TrollhättanSweden Advanced Instrumentation Institute Korea Research Institute of Standards and Science34113 DaejeonRepublic of Korea

Among micro-scale imaging technologies of materials,X-ray micro-computed tomography has evolved as most popular choice,even though it is restricted to limited field-of-views and long acquisition *** recent progress in small-angle X-ray scattering these downsides of conventional absorption-based computed tomography have been overcome,allowing complete analysis of the micro-architecture for samples in the dimension of centimetres in a matter of minutes.

关键词： tensor element overcome

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Achieving Near-Intrinsic Exciton Linewidth at Room Temperature in Monolayer WS2 Coupled with a Mie Resonator

Achieving Near-Intrinsic Exciton Linewidth at Room Temperatu...

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CLEO: science and Innovations, S and I 2022

作者： Fang, Jie Yao, Kan Zheng, Yuebing Materials Science & Engineering Program Texas Materials Institute The University of Texas at Austin AustinTX78712 United States Walker Department of Mechanical Engineering The University of Texas at Austin AustinTX78712 United States

ISBN: (纸本)9781557528209

Strong multiparticle interactions at room temperature (RT) lead to broadened homogeneous exciton linewidths in 2D semiconductors, degrading the quality of excitonic mode and emission. By coupling a Mie resonator with monolayer WS2, we achieve narrowed linewidths at RT, approaching the theoretical limit at 0 Kelvin. © Optica Publishing Group 2022, © 2022 The Author(s)

关键词： Linewidth

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Phase/Interfacial-Engineered Two-Dimensional-Layered WSe2 Films by a Plasma-Assisted Selenization Process: Modulation of Oxygen Vacancies in Resistive Random-Access Memory

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ACS Applied materials and Interfaces 2023年第28期15卷 33858-33867页

作者： Chaudhary, Mayur Shih, Yu-Chuan Tang, Shin-Yi Yang, Tzu-Yi Kuo, Tzu-Wen Chung, Chia-Chen Shen, Ying-Chun Anbalagan, Aswin kumar Lee, Chih-Hao Hou, Tuo-Hung He, Jr-Hau Chueh, Yu-Lun Department of Materials Science and Engineering National Tsing Hua University Hsinchu30013 Taiwan International Intercollegiate Ph.D. Program National Tsing Hua University Hsinchu30013 Taiwan College of Semiconductor Research National Tsing Hua University Hsinchu30013 Taiwan Department of Physics National Sun Yat-Sen University Kaohsiung80424 Taiwan Department of Engineering and System Science National Tsing Hua University Hsinchu30013 Taiwan Department of Electronic Engineering National Yang Ming Chiao Tung University Hsinchu30013 Taiwan Department of Materials Science and Engineering City University of Hong Kong Hong Kong999077 Hong Kong Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu30013 Taiwan Semiconductor Research Center Hon Hai Research Institute Taipei11492 Taiwan

Here, we propose phase and interfacial engineering by inserting a functional WO3 layer and selenized it to achieve a 2D-layered WSe2/WO3 heterolayer structure by a plasma-assisted selenization process. The 2D-layered WSe2/WO3 heterolayer was coupled with an Al2O3 film as a resistive switching (RS) layer to form a hybrid structure, with which Pt and W films were used as the top and bottom electrodes, respectively. The device with good uniformity in SET/RESET voltage and high low-/high-resistance window can be obtained by controlling a conversion ratio from a WO3 film to a 2D-layered WSe2 thin film. The Pt/Al2O3/(2D-layered WSe2/WO3)/W structure shows remarkable improvement to the pristine Pt/Al2O3/W and Pt/Al2O3/2D-layered WO3/W in terms of low SET/RESET voltage variability (−20/20)%, multilevel characteristics (uniform LRS/HRS distribution), high on/off ratio (104-105), and retention (∼105 s). The thickness of the obtained WSe2 was tuned at different gas ratios to optimize different 2D-layered WSe2/WO3 (%) ratios, showing a distinctive trend of reduced and uniform SET/RESET voltage variability as 2D-layered WSe2/WO3 (%) changes from 90/10 (%) to 45/55 (%), respectively. The electrical measurements confirm the superior ability of the metallic 1T phase of the 2D-layered WSe2 over the semiconducting 2H phase. Through systemic studies of RS behaviors on the effect of 1T/2H phases and 2D-layered WSe2/WO3 ratios, the low-temperature plasma-assisted selenization offers compatibility with the temperature-limited 3D integration process and also provides much better thickness control over a large area. © 2023 American Chemical Society.

关键词： Aluminum oxide

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Stretchable,skin-conformable neuromorphic system for tactile sensory recognizing and encoding

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InfoMat 2023年第12期5卷 87-99页

作者： Mengge Wu Qiuna Zhuang Kuanming Yao Jian Li Guangyao Zhao Jingkun Zhou Dengfeng Li Rui Shi Guoqiang Xu Yingchun Li Zijian Zheng Zhihui Yang Junsheng Yu Xinge Yu State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Science and EngineeringUniversity of Electronic Science and Technology of China(UESTC)Chengduthe People's Republic of China Department of Biomedical Engineering City University of Hong KongHong Kongthe People's Republic of China Laboratory for Advanced Interfacial Materials and Devices School of Fashion and TextilesThe Hong Kong Polytechnic UniversityHong Kongthe People's Republic of China Hong Kong Center for Cerebra-Cardiovascular Health Engineering Hong Kong Science ParkHong Kongthe People's Republic of China College of Science Harbin Institute of TechnologyShenzhenthe People's Republic of China Department of Pathology The Affiliated Hospital of Southwest Medical UniversityLuzhouthe People's Republic of China

Expanding wearable technologies to artificial tactile perception will be of significance for intelligent human-machine interface,as neuromorphic sensing devices are promising candidates due to their low energy consumption and highly effective operating ***-compatible and conformable features are required for the purpose of realizing wearable artificial tactile ***,we report an intrinsically stretchable,skin-integrated neuromorphic system with triboelectric nanogenerators as tactile sensing and organic electrochemical transistors as information *** integrated system provides desired sensing,synaptic,and mechanical characteristics,such as sensitive response(~0.04 kPa^(-1))to low-pressure,short-and long-term synaptic plasticity,great switching endurance(>10000 pulses),symmetric weight update,together with high stretchability of 100%*** neural encoding,demonstrations are capable of recognizing,extracting,and encoding features of tactile *** work provides a feasible approach to wearable,skin-conformable neuromorphic sensing system with great application prospects in intelligent robotics and replacement prosthetics.

关键词： neural encoding neuromorphic sensing system organic electrochemical transistors tactile sensation triboelectric nanogenerators

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Electro-Polymerization Process with Double-Sided Electrodes for Supercapacitors 5

Electro-Polymerization Process with Double-Sided Electrodes ...

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5th IEEE International Flexible Electronics Technology Conference, IFETC 2023

作者： Koripally, Nandu Yao, Lulu Eedugurala, Naresh Azoulay, Jason D. Ng, Tse Nga University of California San Diego Department of Electrical and Computer Engineering La Jolla CA United States University of California San Diego Materials Science Engineering Program La Jolla CA United States Georgia Institute of Technology Chemisty Department AtlantaGA United States

ISBN: (纸本)9798350332094

Supercapacitors are known for longer cycle life and faster charging rate compared to batteries. However, the energy density of supercapacitors requires improvement to expand their application space. To raise the energy density of redox supercapacitors, this work demonstrates electro-polymerization on both sides of electrodes to increase material loading, reduce overall device mass, and consequently increase the capacitance, power, and energy density of supercapacitors. We achieved an energy density of 1823 mWh kg-1 and a power density of 16.5 W kg-1 with a wide potential window of 3 V. © 2023 IEEE.

关键词： Supercapacitor

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Improved camptothecin encapsulation and efficacy by environmentally sensitive block copolymer/chitosan/fucoidan nanoparticles for targeting lung cancer cells

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International Journal of Biological Macromolecules 2024年第Part2期277卷 133901页

作者： Don, Trong-Ming Hong, Yu-Ting Jheng, Pei-Ru Chuang, Er-Yuan Huang, Yi-Cheng Department of Chemical and Materials Engineering Tamkang University New Taipei City Taiwan College of Life Sciences Department of Food Science National Taiwan Ocean University Keelung Taiwan Graduate Institute of Biomedical Materials and Tissue Engineering International PhD Program in Biomedical Engineering Taipei Medical University Taipei Taiwan Cell Physiology and Molecular Image Research Center Taipei Medical University–Wan Fang Hospital Taipei Taiwan

In this study, thermo-sensitive poly(N-isopropyl acrylamide) (PNP) was polymerized with pH-sensitive poly(acrylic acid) (PAA) to prepare a PAA-b-PNP block copolymer. Above its cloud point, the block copolymer self-assembled into nanoparticles (NPs), encapsulating the anticancer drug camptothecin (CPT) in situ. Chitosan (CS) and fucoidan (Fu) further modified these NPs, forming Fu-CPT-NPs to enhance biocompatibility, drug encapsulation efficiency (EE), and loading content (LC), crucially facilitating P-selectin targeting of lung cancer cells through a drug delivery system. The EE and LC reached 82 % and 3.5 %, respectively. According to transmission electron microscope observation, these Fu-CPT-NPs had uniform spherical shapes with an average diameter of ca. 250 nm. They could maintain their stability in a pH range of 5.0–6.8. In vitro experimental results revealed that the Fu-CPT-NPs exhibited good biocompatibility and had anticancer activity after encapsulating CPT. It could deliver CPT to cancer cells by targeting P-selectin, effectively increasing cell uptake and inducing cell apoptosis. Animal study results showed that the Fu-CPT-NPs inhibited lung tumor growth by increasing tumor cell apoptosis without causing significant tissue damage related to generating reactive oxygen species in lung cancer cells. This system can effectively improve drug-delivery efficiency and treatment effects and has great potential for treating lung cancer. © 2024 Elsevier B.V.

关键词： Nanoparticles

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