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arXiv 2020年

作者： Yi, Haozhe Oh, Kiwon Kou, Rui Qiao, Yu Department of Structural Engineering University of California – San Diego La JollaCA92093-0085 United States Program of Materials Science and Engineering University of California – San Diego La JollaCA92093 United States

Algae cultivation is an active area of study for carbon sequestration, while the large amount of produced algae must be upcycled. In the current study, we fabricated artificial timber based on algae filler, with only 2~4% epoxy binder. The flexural strength could be comparable with those of softwoods. The binder was efficiently dispersed in the algae phase through diluent-aided compaction self-assembly. The important processing parameters included the binder content, the filler morphology, the compaction pressure, the diluent ratio, and the curing condition. This research not only is critical to carbon sequestration, but also helps reduce the consumption of conventional construction materials. Copyright © 2020, The Authors. All rights reserved.

关键词： Timber

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Carbon Free Radical (R⋅) Inactivates NF-κB for Radical Capping Therapy

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Angewandte Chemie 2024年第29期136卷

作者： Dr. Peiran Zhao Dr. Huiyan Li Bingxia Sun Dr. Chaochao Wang Dr. Guanglei Lv Chao Chen Leilei Ying Prof. Xinhong He Prof. Dayong Jin Prof. Wenbo Bu Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers Academy for Engineering and Technology Fudan University Shanghai 200433 P. R. China Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 P. R. China Department of Medical Ultrasound Shanghai Tenth People's Hospital Tongji University Cancer Center Tongji University School of Medicine Shanghai 200072 P. R. China Center for Biotechnology and Biomedical Engineering Yiwu Research Institute of Fudan University Yiwu 322000 P. R. China Department of Interventional Radiology Fudan University Shanghai Cancer Center and department of Oncology Shanghai Medical College Fudan University Shanghai 200032 China Institute for Biomedical Materials and Devices (IBMD) Faculty of Science University of Technology Sydney Sydney New South Wales 2007 Australia

Inactivating hyperactivated transcription factors can overcome tumor therapy resistance, but their undruggable features limit the development of conventional inhibitors. Here, we report that carbon-centered free radicals (R⋅) can inactivate NF-κB transcription by capping the active sites in both NF-κB and DNA. We construct a type of thermosensitive R⋅ initiator loaded amphiphilic nano-micelles to facilitate intracellular delivery of R⋅. At a temperature of 43 °C, the generated R⋅ engage in electrophilic radical addition towards double bonds in nucleotide bases, and simultaneously cap the sulfhydryl residues in NF-κB through radical chain reaction. As a result, both NF-κB nuclear translocation and NF-κB-DNA binding are suppressed, leading to a remarkable NF-κB inhibition of up to 94.1 %. We have further applied R⋅ micelles in a clinical radiofrequency ablation tumor therapy model, showing remarkable NF-κB inactivation and consequently tumor metastasis inhibition. Radical capping strategy not only provides a method to solve the heat-sink effect in clinic tumor hyperthermia, but also suggests a new perspective for controllable modification of biomacromolecules in cancer therapy.

关键词： carbon radicals tumor hyperthermia therapy NF-κB transcription suppression nanomedicine radical capping

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Titanium and titanium alloys in dentistry: current trends, recent developments, and future prospects

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Heliyon 2022年第11期8卷 e11300页

作者： Md Enamul Hoque Nazmir-Nur Showva Mansura Ahmed Adib Bin Rashid Sarder Elius Sadique Tarek El-Bialy Huaizhong Xu Department of Biomedical Engineering Military Institute of Science and Technology Dhaka Bangladesh. Department of Industrial and Production Engineering Military Institute of Science and Technology Dhaka Bangladesh. College of Information Technology and Engineering Marshall University West Virginia USA. Department of Dentistry & Dental Hygiene University of Alberta Alberta Canada. Department of Biobased Materials Science Kyoto Institute of Technology (KIT) Sakyoku Kyoto City Japan.

Many implant materials have been used in various dental applications depending on their efficacy and availability. A dental implant must possess the required characteristics, such as biocompatibility, corrosion & wear resistance, adequate mechanical properties, osseointegration, etc., to ensure its safe and optimum use. This review analyzes various aspects of titanium (Ti) and Ti alloys, including properties, manufacturing processes, surface modifications, applications as dental implants, and limitations. In addition, it also presents a perception of recent advances in Ti-based implant materials and the futuristic development of innovative dental implants.

关键词： Antibacterial activity Biocompatibility Corrosion resistance Dental implant Osseointegration Surface modification Titanium alloy

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MOF-Derived Double-Layer Hollow Nanoparticles with Oxygen Generation Ability for Multimodal Imaging-Guided Sonodynamic Therapy

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Angewandte Chemie 2020年第32期132卷 13659-13663页

作者： Pan X. Wang W. Huang Z. Liu S. Guo J. Zhang F. Yuan H. Li X. Liu F. Liu H. Department of Interventional Radiology the First Medical Center of Chinese PLA General Hospital Beijing 100853 China Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic Composites Bionanomaterials & Translational Engineering Laboratory Beijing Key Laboratory of Bioprocess Beijing Laboratory of Biomedical Materials Beijing University of Chemical Technology Beijing 100029 China Beijing National Laboratory of Molecular Sciences Key Laboratory of Green Printing Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China

The high reactive oxygen species (ROS) generation ability and simple construction of sonosensitizer systems remain challenging in sonodynamic therapy against the hypoxic tumor. In this work, we rationally prepared MOF-derived double-layer hollow manganese silicate nanoparticle (DHMS) with highly effective ROS yield under ultrasound irradiation for multimodal imaging-guided sonodynamic therapy (SDT). The presence of Mn in DHMS increased ROS generation efficiency because it could be oxidized by holes to improve the electron–hole separation. Moreover, DHMS could produce oxygen in the tumor microenvironment, which helps overcome the hypoxia of the solid tumor and thus enhance the treatment efficiency. In vivo experiments demonstrated efficient tumor inhibition in DHMS-mediated SDT guided by ultrasound and magnetic resonance imaging. This work presents a MOF-derived nanoparticle with sonosensitive and oxygen generating ability, which provides a promising strategy for tumor hypoxia in SDT. © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

关键词： metal–organic frameworks multimodal imaging nanoparticles oxygen generation sonodynamic therapy

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Coulomb interaction-driven reshaped weyl fermionic dispersions in MoTe2

arXiv

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arXiv 2021年

作者： Kang, Seoung-Hun Jeon, Sangjun Kim, Hyun-Jung Ko, Wonhee Cho, Suyeon Kang, Se Hwang Kim, Sung Wng Yang, Heejun Kim, Hyo Won Son, Young-Woo Korea Institute for Advanced Study Seoul02455 Korea Republic of Department of Physics Chung-Ang University Seoul06974 Korea Republic of Peter Grünberg Institute Institute for Advanced Simulation Forschungszentrum Jülich Jülich52428 Germany Samsung Advanced Institute of Technology Suwon16678 Korea Republic of Center for Nanophase Materials Sciences Oak Ridge National Laboratory Oak RidgeTN37831 United States Department of Chemical Engineering and Materials Science Graduate Program in System Health Science and Engineering Ewha Womans University Seoul03760 Korea Republic of Department of Energy Science Sungkyunkwan University Suwon16419 Korea Republic of Department of Physics Korea Advanced Institute of Science and Technology Daejeon34141 Korea Republic of

We report the direct evidence of impacts of the Coulomb interaction in a prototypical Weyl semimetal, MoTe2, that alter its bare bands in a wide range of energy and momentum. Our quasiparticle interference patterns measured using scanning tunneling microscopy are shown to match the joint density of states of quasiparticle energy bands including momentum-dependent self-energy corrections, while electronic energy bands based on the other simpler local approximations of the Coulomb interaction fail to explain neither the correct number of quasiparticle pockets nor shape of their dispersions observed in our spectrum. With this, we predict a transition between type-I and type-II Weyl fermions with doping and resolve its disparate quantum oscillation experiments, thus highlighting the critical roles of Coulomb interactions in layered Weyl semimetals. © 2021, CC BY-NC-ND.

关键词： Dispersions

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Microwave defectoscopy – detection of composite delamination

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Journal of Physics: Conference Series 2021年第1期1782卷

作者： P Sobkiewicz P Bieńkowski W Błażejewski Wroclaw University of Science and Technology Telecommunications and Teleinformatics Department Wroclaw Wroclaw University of Science and Technology Department of Mechanics Materials and Biomedical Engineering Wroclaw

This paper is a short description of microwave non-destructive testing methods for composite material and presentation of a simple broadband microwave test method with an open-ended waveguide antenna for the purpose of non-destructive testing and quality evaluation of layered composite materials. Low-complexity experimental setup is shown. Research is aimed to determine the physical state of layered composite material especially in industrial pipelines. The overall applicability of the proposed system for detection purpose is demonstrated with use of experimental results. Suggestions for future researches is the need to develop more sophisticated waveguides systems to increase the scan resolution.

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Recent Advances in Two-Dimensional Magnets: Physics and Devices towards Spintronic Applications

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研究（英文） 2020年第2期 129-147页

作者： Vertikasari P.Ningrum Bowen Liu Wei Wang Yao Yin Yi Cao Chenyang Zha Hongguang Xie Xiaohong Jiang Yan Sun Sichen Qin Xiaolong Chen Tianshi Qin Chao Zhu Lin Wang Wei Huang Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Nanjing Tech University (Nanjing Tech)30 South Puzhu Road Nanjing 211816 China Frontiers Science Center for Flexible Electronics (FSCFE) Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME) Northwestern Polytechnical University (NPU) 127 West Youyi Road Xi'an 710072 China Department of Electrical and Electronic Engineering Southern University of Science and Technology Shenzhen 518055 China Center for Programmable Materials School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798 Singapore Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Nanjing Tech University (Nanjing Tech)30 South Puzhu Road Nanjing 211816 China Frontiers Science Center for Flexible Electronics (FSCFE) Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME) Northwestern Polytechnical University (NPU) 127 West

The emergence of low-dimensional nanomaterials has brought revolutionized development of magnetism,as the size effect can significantly influence the spin *** the first demonstration of truly two-dimensional magnetic materials (2DMMs) in 2017,a wide variety of magnetic phases and associated properties have been exhibited in these 2DMMs,which offer a new opportunity to manipulate the spin-based devices efficiently in the ***,we focus on the recent progress of 2DMMs and heterostructures in the aspects of their structural characteristics,physical properties,and spintronic ***,the microscopy characterization of the spatial arrangement of spins in 2D lattices is ***,the optical probes in the light-matter-spin interactions at the 2D scale are ***,particularly,we systematically summarize the recent work on the electronic and spintronic devices of *** the section of electronic properties,we raise several exciting phenomena in 2DMMs,i.e.,long-distance magnon transport,field-effect transistors,varying magnetoresistance behavior,and (quantum) anomalous Hall *** the section of spintronic applications,we highlight spintronic devices based on 2DMMs,e.g.,spin valves,spin-orbit torque,spin field-effect transistors,spin tunneling field-effect transistors,and spin-filter magnetic tunnel *** last,we also provide our perspectives on the current challenges and future expectations in this field,which may be a helpful guide for theorists and experimentalists who are exploring the optical,electronic,and spintronic properties of 2DMMs.

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Boosting piezoelectric catalytic ammonia synthesis: A synergistic approach with sulfur vacancy engineered CdS pyramid-surface nanospheres

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Nano Energy 2025年 142卷

作者： Fang-Rong Hsu Yu-Ching Chen Cheng-Hsi Yeh Hsun-Yen Lin Hsin-Yi Tiffany Chen Jyh Ming Wu Department of Materials Science and Engineering National Tsing Hua University 101 Section 2 Kuang Fu Road Hsinchu 300 Taiwan Ph.D. Program in Prospective Functional Materials Industry National Tsing Hua University No. 101 Section 2 Kuang Fu Road Hsinchu 300 Taiwan Department of Engineering and System Science National Tsing Hua University No. 101 Section 2 Kuang-Fu Road Hsinchu 300 Taiwan College of Semiconductor Research National Tsing Hua University No. 101 Section 2 Kuang Fu Road Hsinchu 300 Taiwan

The nitrogen reduction reaction (NRR) is essential for sustainable ammonia synthesis but suffers from low selectivity and sluggish kinetics due to hydrogen evolution. Piezocatalysis offers a promising alternative by leveraging strain-induced polarization to enhance reaction specificity and efficiency. We develop a sulfur vacancy-engineered cadmium sulfide (CdS) piezoelectric catalytic system to optimize nitrogen activation. Sulfur vacancies improve nitrogen adsorption, enhance charge separation, and lower the hydrogenation energy barrier, overcoming limitations of traditional electrocatalysts. Through a systematic investigation of charge separation mechanisms, combining theoretical calculations and experimental validation, we demonstrate the crucial role of sulfur vacancies and surface morphology in optimizing catalytic performance. Finite element method (FEM) simulations reveal that the pyramid-like CdS surface generates a strong piezopotential under mechanical stress, enhancing charge transfer and redox reactions. Density functional theory (DFT) calculations show sulfur vacancies increase electron availability near the Fermi level, facilitating dinitrogen activation and stabilizing intermediates. Therefore, the optimized CdS catalyst achieves an ammonia production rate of 1702 µg g −1 h −1 —four times higher than pristine CdS—demonstrating the effectiveness of defect engineering in piezoelectric catalysis. This study highlights the synergy between piezoelectric activation and defect engineering, offering insights into charge separation and advancing piezoelectric catalysis for sustainable ammonia synthesis.

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Nanoparticle-integrated hydrogels as versatile colorimetric sensors

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Coordination Chemistry Reviews 2025年 541卷

作者： Song, Hyewon Jung, Do Hyeon Cho, Yejin Cho, Hui Hun Panferov, Vasily G. Liu, Juewen Heo, Jun Hyuk Lee, Jung Heon School of Advanced Materials Science and Engineering Sungkyunkwan University (SKKU) Suwon 16419 South Korea Research Center for Advanced Materials Technology Core Research Institute (CRI) Suwon 16419 South Korea Department of Chemistry Waterloo Institute for Nanotechnology University of Waterloo Waterloo ON Canada Department of MetaBioHealth Sungkyunkwan University (SKKU) Suwon 16419 South Korea Biomedical Institute for Convergence at SKKU (BICS) Sungkyunkwan University (SKKU) Suwon 16419 South Korea

Nanoparticles have been extensively employed as probes in colorimetric sensors due to their ease of surface functionalization and combined optical and catalytic properties. However, their intrinsic tendency to aggregate impairs the unique plasmonic properties and diminishes catalytic activity associated with their nanoscale size, potentially compromising long-term performance. To address these limitations, recent studies have focused on integrating nanoparticles into hydrogels, thereby limiting nanoparticle diffusion to overcome challenges in colorimetric sensing applications. In particular, nanoparticle-integrated hydrogels can preserve the colloidal stability of nanoparticles, ensuring practical applicability that is unattainable with free nanoparticles for on-site scenarios. This article comprehensively reviews recent advances in nanoparticle-integrated hydrogels for colorimetric sensing applications, with particular emphasis on their abilities to detect biological and environmental targets. The unique physicochemical properties of these hydrogels provide ideal platforms for deploying various polymeric and metallic nanoparticles that are highly sensitive to environmental changes and can visually indicate the presence of specific targets. Hydrogels also enhance sensor performance owing to their high-water contents, concentration effect, and distinctive swelling properties, which amplify sensor responses to target molecules. In the end, this review article outlines promising avenues for future research in this dynamic field. © 2025 Elsevier B.V.

关键词： Hydrogel-based sensing Multiplex detection Nanozyme activity Plasmonic nanoparticles Stimuli-responsive hydrogels

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Integrating spatially-resolved transcriptomics data across tissues and individuals: challenges and opportunities

arXiv

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arXiv 2024年

作者： Guo, Boyi Ling, Wodan Kwon, Sang Ho Panwar, Pratibha Ghazanfar, Shila Martinowich, Keri Hicks, Stephanie C. Department of Biostatistics Johns Hopkins Bloomberg School of Public Health BaltimoreMD United States Division of Biostatistics Department of Population Health Sciences Weill Cornell Medicine NY United States Lieber Institute for Brain Development Johns Hopkins Medical Campus BaltimoreMD United States Solomon H. Snyder Department of Neuroscience Johns Hopkins School of Medicine BaltimoreMD United States Biochemistry Cellular and Molecular Biology Graduate Program Johns Hopkins School of Medicine BaltimoreMD United States School of Mathematics and Statistics The University of Sydney NSW2006 Australia Sydney Precision Data Science Centre University of Sydney NSW2006 Australia Charles Perkins Centre The University of Sydney NSW2006 Australia Department of Psychiatry and Behavioral Sciences Johns Hopkins School of Medicine BaltimoreMD United States Johns Hopkins Kavli Neuroscience Discovery Institute BaltimoreMD United States Department of Biomedical Engineering Johns Hopkins University BaltimoreMD United States Center for Computational Biology Johns Hopkins University BaltimoreMD United States Malone Center for Engineering in Healthcare Johns Hopkins University BaltimoreMD United States

Advances in spatially-resolved transcriptomics (SRT) technologies have propelled the development of new computational analysis methods to unlock biological insights. As the cost of generating these data decreases, these technologies provide an exciting opportunity to create large-scale atlases that integrate SRT data across multiple tissues, individuals, species, or phenotypes to perform population-level analyses. Here, we describe unique challenges of varying spatial resolutions in SRT data, as well as highlight the opportunities for standardized preprocessing methods along with computational algorithms amenable to atlas-scale datasets leading to improved sensitivity and reproducibility in the future. © 2024, CC BY-NC-ND.

关键词： Biotic

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