检索结果-内蒙古大学图书馆

Mussel-Inspired and Bioclickable Peptide Engineered Surface to Combat Thrombosis and Infection

Research 2022年第3期2022卷 91-104页

作者： Xiaohui Mou Hongbo Zhang Hua Qiu Wentai Zhang Ying Wang Kaiqin Xiong Nan Huang Hélder A.Santos Zhilu Yang Affiliated Dongguan Hospital Southern Medical UniversityDongguanGuangdong 523059China Guangdong Provincial Key Laboratory of Shock and Microcirculation GuangzhouGuangdong 510080China Key Laboratory of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China Pharmaceutical Sciences Laboratory Åbo Akademi UniversityTurku Biosciences CenterUniversity of Turku andÅbo Akademi University20520 TurkuFinland State Key Laboratory of Molecular Engineering of Polymers Fudan UniversityShanghai 200438China Department of Biomedical Engineering and W.J.Kolff Institute for Biomedical Engineering and Materials Science University Medical Center Groningen/University of GroningenAnt.Deusinglaan 19713 AV GroningenNetherlands Drug Research Program Division of Pharmaceutical Chemistry and TechnologyFaculty of PharmacyUniversity of HelsinkiFI-00014 HelsinkiFinland

Thrombosis and infections are the two major complications associated with extracorporeal circuits and indwelling medical devices,leading to significant mortality in *** address this issue,here,we report a biomimetic surface engineering strategy by the integration of mussel-inspired adhesive peptide,with bio-orthogonal click chemistry,to tailor the surface functionalities of tubing and *** by mussel adhesive foot protein,a bioclickable peptide mimic(DOPA)4-azidebased structure is designed and grafted on an aminated tubing robustly based on catechol-amine ***,the dibenzylcyclooctyne(DBCO)modified nitric oxide generating species of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid(DOTA)chelated copper ions and the DBCO-modified antimicrobial peptide(DBCO-AMP)are clicked onto the grafted surfaces via bio-orthogonal *** combination of the robustly grafted AMP and Cu-DOTA endows the modified tubing with durable antimicrobial properties and ability in long-term catalytically generating NO from endogenous snitrosothiols to resist adhesion/activation of platelets,thus preventing the formation of ***,this biomimetic surface engineering technology provides a promising solution for multicomponent surface functionalization and the surface bioengineering of biomedical devices with enhanced clinical performance.

关键词： DOTA generating Engine

来源：评论

学校读者我要写书评

暂无评论

Fate of multipolar physics in 5d2 double perovskites

引用

Physical Review B 2023年第4期108卷 045149-045149页

作者： Ahmed Rayyan Xiaoyu Liu Hae-Young Kee Department of Physics University of Toronto Toronto Ontario Canada M5S 1A7 Department of Materials Science and Engineering University of Washington Seattle Washington 98195 USA CIFAR Program in Quantum Materials Canadian Institute for Advanced Research Toronto Ontario Canada M5G 1M1

In a cubic environment, the ground state of spin-orbit coupled 5d2 ions is a non-Kramers Eg doublet, which hosts quadrupole and octupole moments. A series of 5d2 osmium double perovskites Ba2MOsO6 (M=Mg, Ca, Zn, Cd) have recently been proposed to exhibit multipolar orders. We investigate the structural properties of these materials using ab initio calculations and find that the cubic structure is unstable for the Cd compound while the Mg, Ca, and Zn materials retain Fm3¯m symmetry. We show that Ba2CdOsO6 favors a rhombohedral R3¯ structure characterized by a−a−a− octahedral tiltings as indicated by unstable T1g phonon modes. Trigonal distortions split the excited T2g triplet into an Eg′ doublet and an Ag singlet, which may cross energy levels with the Eg doublet and suppress the multipolar physics. We find a window where Eg remains the lowest energy state under trigonal distortion, enabling the emergence of multipole phases in noncubic crystal environments.

关键词： Spin-orbit coupling Mott insulators Perovskites Crystal-field theory Density functional theory

来源：评论

学校读者我要写书评

暂无评论

Impact of Morphological and Structural Properties of Submicron Core-Shell Fe-Silica Particles on High-Current Power Converter Performance in Electronics

引用

ACS Omega 2025年第22期10卷 23387-23396页

作者： Ratnasari, Delyana Septiani, Eka Lutfi Nandiyanto, Asep Bayu Dani Cao, Kiet Le Anh Hirano, Tomoyuki Okuda, Nobuhiro Matsumoto, Hiroyuki Ogi, Takashi Chemical Engineering Program Department of Advanced Science and Engineering Graduate School of Advanced Science and Engineering Hiroshima University 1-4-1 Kagamiyama Hiroshima Higashi-Hiroshima 739-8527 Japan Program Studi Teknik Kimia Fakultas Pendidikan Matematika dan Ilmu Pengetahuan Alam Universitas Pendidikan Indonesia Jl. Setiabudhi No. 229 West Java Bandung 40154 Indonesia Materials Research Center Technology & Intellectual Property HQ TDK Corporation 570-2 Matsugashita Minami-Hadori Chiba Narita 286-8588 Japan

As the demand for energy-efficient solutions grows in industries such as electric vehicles and renewable energy systems, the need for high-current power converters, powder core inductors, has become increasingly critical. These converters are essential for managing the flow of energy while maintaining efficiency under demanding conditions. However, achieving the necessary performance, particularly in terms of energy storage and minimizing energy losses, requires advanced materials with tailored magnetic properties. This study addresses these needs by introducing a novel class of magnetic materials, i.e., submicrometer-sized silica-coated iron (Fe@SiO2) particles. These particles are produced through a one-step aerosol process, enabling precise control over particle morphology, size, and structural characteristics. The tuned Fe@SiO2 particles demonstrated improved packing density and saturation current as well as reduced eddy current losses, significantly boosting the stability and efficiency of power converters to meet the demands of modern high-current electronic systems. This research highlights the importance of advanced magnetic materials in the ongoing evolution of power electronics, offering new possibilities for more efficient and reliable power conversion systems in a range of applied electronic technologies. © 2025 The Authors. Published by American Chemical Society.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Z-Laminating Assembly of Graphene Nanoflakes for Super-Strong Membranes and Functional Coatings

引用

ACS Applied Nano materials 2024年第13期7卷 14957-14963页

作者： Santos, Ian Daniell Tjarks, Patrick Muthu, Jeyavelan Lin, You-Chen Yen, Zhi-Long Chand, Pradyumna Kumar Raman, Radha Nguyen, Dinh Tuan Rouhani, Mehdi Jeng, Yeau-Ren Hsieh, Ya-Ping Hofmann, Mario Department of Physics National Taiwan University Taipei 106 Taiwan Nano Science and Technology Program Taiwan International Graduate Program Academia Sinica and National Taiwan University Taipei 106 Taiwan J. Heyrovsky Institute of Physical Chemistry of the Czech Academy of Sciences Prague 18200 Czech Republic Institute of Atomic and Molecular Sciences Academia Sinica Taipei 106 Taiwan Department of Chemistry National Taiwan University Taipei 106 Taiwan Department of Physics National Central University Taoyuan 320 Taiwan Molecular Science and Technology Program Taiwan International Graduate Program Academia Sinica and National Central University Taipei 106 Taiwan Department of Biomedical Engineering National Cheng Kung University 1 University Road Tainan 70101 Taiwan Department of Materials Science and Engineering National Cheng Kung University Tainan 70101 Taiwan Academy of Innovative Semiconductor and Sustainable Manufacturing National Cheng-Kung University (NCKU) Tainan 70101 Taiwan

We demonstrate the strengthening of graphene, an atomically thin carbon allotrope, by out-of-plane folding. Through lateral confinement of graphene at the water-air interface, nanoscale buckling was induced in suspended flakes, leading to an unexpected folding transition beyond a critical surface pressure. The emergence of folding was confirmed by in situ Brewster angle reflectivity and ex situ microscopy, showing a unique “z-laminated” nanostructure. Molecular dynamics simulations indicate that z-lamination yields an enhanced adhesion between neighboring flakes compared to lateral sliding, which was confirmed by a surface pressure hysteresis during the folding process. Mechanical testing reveals superior Young’s modulus and yield strength when compared to conventional graphene assemblies and even compared to composites. We demonstrate the potential of the z-lamination approach for applications in graphene-based structural materials, tribological layers, and functional electrochemical coatings. Finally, the complete recyclability of z-laminated graphene opens up new routes toward sustainable nanostructured materials. © 2024 The Authors. Published by American Chemical Society

关键词： 2D materials composites laminated graphene membranes recyclable

来源：评论

学校读者我要写书评

暂无评论

Strengthening Mechanism of Cold-Rolled Co-Based Super Alloy for Diaphragm Valves under Room Temperature Tensile Loading

Journal of Korean Institute of Metals and Materials

引用

Journal of Korean Institute of Metals and materials 2025年第5期63卷 319-329页

作者： Park, Jung-Hyun Song, Noh-Geon Choi, Jae-Ho Kang, Doo-Hong Lee, Kee-Ahn Department of Materials Science and Engineering Inha University Incheon22212 Korea Republic of Program in Semiconductor Convergence Inha University Incheon22212 Korea Republic of CN-1 Corp. Hwaseong18487 Korea Republic of Asflow Corp Hwaseong18514 Korea Republic of

Cold-rolled Co-Cr-Ni alloy (Elgiloy) and Co-Ni-Cr alloy (SPRON 510) can be considered for diaphragm valve materials in gas valve systems. In this study, the effect of direct aging (DA) heat treatment on the tensile properties of Co-based alloys was investigated and the influence of microstructural changes on the tensile behavior was examined. The Co-Cr-Ni Elgiloy alloy exhibited a hexagonal close packed (HCP) phase formation through strain induced martensite transformation (SIMT) in both as-rolled and DA conditions, promoting finer grains due to increased sub-structured and recrystallized grains. In contrast, the Co-Ni-Cr SPRON 510 alloy showed a face centered cubic (FCC) single phase with a higher precipitates fraction and dislocation density. Both Co-based alloys showed improved hardness and strength after DA treatment, with the Co-Cr-Ni alloy demonstrating higher tensile strength and the Co-Ni-Cr alloy exhibiting higher yield strength and elongation. The Co-Cr-Ni alloy revealed fine shallow dimples and cleavage fracture mode, while Co-Ni-Cr showed larger dimples and river patterns on tensile fracture surfaces. The Co-Cr-Ni alloy’s deformation behavior was dominated by active SIMT due to low stacking fault energy (SFE), while the Co-Ni-Cr alloy primarily formed deformation twins due to higher SFE. The high tensile strength of the Co-Cr-Ni alloy was dominated by hardening effects due to a relatively fine grain size and SIMT behavior, while the high yield strength of the Co-Ni-Cr alloy was dominated by deformation twin, dislocation density, Taylor factor and high precipitate fraction. Copyright © The Korean Institute of Metals and materials.

关键词： Tensile strength

来源：评论

学校读者我要写书评

暂无评论

FIP-GNN: Graph neural networks for scalable prediction of grain-level fatigue indicator parameters

arXiv

引用

arXiv 2024年

作者： Sim, Gyu-Jang Lee, Myoung-Gyu Latypov, Marat I. Department of Materials Science and Engineering & RIAM Seoul National University 1 Gwanak-ro Gwanak-gu Seoul08826 Korea Republic of Department of Materials Science and Engineering University of Arizona TucsonAZ85721 United States Graduate Interdisciplinary Program in Applied Mathematics University of Arizona TucsonAZ85721 United States

High-cycle fatigue is a critical performance metric of structural alloys for many applications. The high cost, time, and labor involved in experimental fatigue testing call for efficient and accurate computer models of fatigue life. We present FIP-GNN – a graph neural network for polycrystals that (i) predicts fatigue indicator parameters as grain-level inelastic responses to cyclic loading quantifying the local driving force for crack initiation and (ii) generalizes these predictions to large microstructure volume elements with grain populations well beyond those used in training. These advances can make significant contributions to statistically rigorous and computationally efficient modeling of high-cycle fatigue – a long-standing challenge in the field. © 2024, CC BY.

关键词： High-cycle fatigue

来源：评论

学校读者我要写书评

暂无评论

Investigation on Spark Plasma Sintering of Calcareous Waste Concrete Powder and Coal Fly Ash

引用

Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy 2023年第11期70卷 451-460页

作者： Kanda, Yasuyuki Shinjo, Tomohide Mechanical Engineering Program School of Engineering Faculty of Engineering University of the Ryukyus 1 Senbaru Nishihara-cho Okinawa Nakagami-gun903-0213 Japan Solid Mechanics and Materials Engineering Graduate School of Engineering and Science University of the Ryukyus 1 Senbaru Nishihara-cho Okinawa Nakagami-gun903-0213 Japan

This paper aims to fabricate a composite material using calcareous waste concrete powder and coal fly ash (FA) by spark plasma sintering. The effect of FA addition on the mechanical properties of the composite material were investigated. The maximum FA content was 7.5 wt%. The relative density of the composite material was approximately 1.0, independent of FA content. In contrast, the Vickers hardness, flexural strength, and flexural modulus increased with increasing FA content. However, the dispersion state of FA in the composite material was not observed by scanning electron microscopy. Powder X-ray diffraction of the composite material revealed that spurrite and wollastonite were formed identically, independent of FA content. Therefore, FA serves as a reinforcement in the composite material. © 2023 Japan Society of Powder and Powder Metallurgy.

关键词： Spark plasma sintering

来源：评论

学校读者我要写书评

暂无评论

Adsorption of volatile organic compounds inside a nanoporous silica waveguide

Adsorption of volatile organic compounds inside a nanoporous...

引用

Optics and Photonics for Sensing the Environment, ES 2022

作者： Barua, Nirmalay Winter, William T. McAuley, Serrita A. Clarkson, Paul T. Prestage, Joshua Salmon, Andrew R. Hutter, Tanya Materials Science and Engineering Program Texas Materials Institute The University of Texas at Austin AustinTX78712 United States SensorHut Ltd CambridgeCB24 9ZR United Kingdom University of Cambridge CambridgeCB2 1EW United Kingdom

Adsorption in complex nanoporous materials is important for many applications. We report a novel approach for measuring adsorption in situ that uses a nanoporous silica waveguide and near-infrared spectroscopy for sel... 详细信息

ISBN: (纸本)9781557528209

关键词： Adsorption

来源：评论

学校读者我要写书评

暂无评论

On the origin of anomalous hysteresis in graphite/boron nitride transistors

arXiv

引用

arXiv 2024年

作者： Waters, Dacen Waleffe, Derek Thompson, Ellis Arreguin-Martinez, Esmeralda Fonseca, Jordan Poirier, Thomas Edgar, James H. Watanabe, Kenji Taniguchi, Takashi Xu, Xiaodong Cobden, David Yankowitz, Matthew Department of Physics University of Washington SeattleWA98195 United States Intelligence Community Postdoctoral Research Fellowship Program University of Washington SeattleWA98195 United States Department of Materials Science and Engineering University of Washington SeattleWA98195 United States Tim Taylor Department of Chemical Engineering Kansas State University Durland Hall ManhattanKS United States Research Center for Electronic and Optical Materials National Institute for Materials Science 1-1 Namiki Tsukuba305-0044 Japan Research Center for Materials Nanoarchitectonics National Institute for Materials Science 1-1 Namiki Tsukuba305-0044 Japan

Field-effect devices constructed by stacking flakes of van der Waals (vdW) materials, with hexagonal boron nitride (hBN) playing the role of gate dielectric, often exhibit virtually no hysteresis in their characteristics. This permits exquisitely detailed studies of diverse gate-voltage-tuned phenomena in vdW devices. Recently, however, a dramatic form of gate hysteresis, sometimes called the "gate doesn't work" (GDW) or "electron ratchet" effect, has been seen in certain individual vdW devices that seem otherwise unexceptional [1-10]. When it occurs, this hysteresis phenomenon is striking and robust, yet it is difficult to reliably reproduce between devices and, largely as a result, its origin remains disputed. Most devices where it has been seen have a bilayer graphene channel and nominal rotational alignment between the graphene and hBN, which has engendered explanations based on properties of bilayer graphene combined with moiré effects [1, 2, 6]. Here, we report our studies of the phenomenon observed in devices that have multilayer graphene channels. We find that the effect can occur in devices with graphite channels that have many more than two graphene layers, in which case it is unambiguously associated with just one surface of the graphite. It can also survive to room temperature, occur in the absence of intentional rotational alignment with hBN, persist when a monolayer of WSe2 is inserted between the graphene and hBN, and exhibit continuous relaxation on timescales of hours or longer. These observations impose strong constraints on the origin of this puzzling phenomenon, which has exciting potential applications if it can be mastered [4, 10, 11]. Copyright © 2024, The Authors. All rights reserved.

关键词： Van der Waals forces

来源：评论

学校读者我要写书评

暂无评论

Layer-dependent optically induced spin polarization in InSe

引用

Physical Review B 2023年第11期107卷 115304-115304页

作者： Jovan Nelson Teodor K. Stanev Dmitry Lebedev Trevor LaMountain J. Tyler Gish Hongfei Zeng Hyeondeok Shin Olle Heinonen Kenji Watanabe Takashi Taniguchi Mark C. Hersam Nathaniel P. Stern Applied Physics Program Northwestern University Evanston Illinois 60208 USA Department of Physics and Astronomy Northwestern University Evanston Illinois 60208 USA Department of Material Science and Engineering Northwestern University Evanston Illinois 60208 USA Computational Science Division Argonne National Laboratory Lemont Illinois 60439 USA Material Science Division Argonne National Laboratory Lemont Illinois 60439 USA Research Center for Functional Materials National Institute for Materials Science 1-1 Namiki Tsukuba 305-0044 Japan International Center for Materials Nanoarchitectonics National Institute for Materials Science 1-1 Namiki Tsukuba 305-0044 Japan Department of Chemistry Northwestern University Evanston Illinois 60208 USA Department of Electrical Engineering and Computer Science Northwestern University Evanston Illinois 60208 USA

Optical control of spin in semiconductors has been pioneered using nanostructures of III-V and II-VI semiconductors, but the emergence of two-dimensional van der Waals materials offers an alternative low-dimensional platform for spintronic phenomena. Indium selenide (InSe), a group-III monochalcogenide van der Waals material, has shown promise for optoelectronics due to its high electron mobility, tunable direct band gap, and quantum transport. In addition to these confirmed properties, there are predictions of spin-dependent optical selection rules, suggesting the potential for all-optical excitation and control of spin in a two-dimensional layered material. Despite these predictions, layer-dependent optical spin phenomena in InSe have yet to be explored. Here, we present measurements of layer-dependent optical spin dynamics in few-layer and bulk InSe. Polarized photoluminescence reveals layer-dependent optical orientation of spin, thereby demonstrating the optical selection rules in few-layer InSe. Spin dynamics are also studied in many-layer InSe using time-resolved Kerr rotation spectroscopy. By applying out-of-plane and in-plane static magnetic fields for polarized emission measurements and Kerr measurements, respectively, the g factor for InSe was extracted. Further investigations are done by calculating precession values using a k·p model, which is supported by ab initio density functional theory. Comparison of predicted precession rates with experimental measurements highlights the importance of excitonic effects in InSe for understanding spin dynamics. Optical orientation of spin is an important prerequisite for optospintronic phenomena and devices, and these first demonstrations of layer-dependent optical excitation of spins in InSe lay the foundation for combining layer-dependent spin properties with advantageous electronic properties found in this material.

关键词： Magneto-optics Spin dynamics Chalcogenides Layered semiconductors Van der Waals systems Density functional theory Kerr effect Photoluminescence k dot p method

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：