检索结果-内蒙古大学图书馆

Symposium Characterization of Minerals, Metals, and Materials: In-Situ Characterization Techniques, 2025, was part of the 154th Annual Meeting and Exhibition, TMS 2025

作者： Nabila, Bouchareb Naouel, Hezil Mamoun, Fellah Dikra, Bouras Habeeb, Majeed Ali Imen, Rim Neçar, Merah Larios, Alejandro Perez Gamal, A. El-Hiti Aleksei, Obrosov Alex, Montagne Matter Science Department Abbes Laghrour-University P.O 1252 Khenchela40004 Algeria Mechanical Engineering Department Abbes Laghrour-University PO 1252 Khenchela40004 Algeria Biomaterial Synthesis and Tribology Research Team Abbes Laghrour University PO 1252 Khenchela40004 Algeria Department of Science of Matter Faculty of Science and Technology University of Souk-Ahras Souk Ahras Algeria Department of Physics College of Education for Pure Sciences University of Babylon Babil Babylon Babil Iraq Mechanical Engineering Department King Fahd University of Petroleum and Minerals PO 1180 Dhahran31261 Saudi Arabia Interdisciplinary Research Center for Advanced Materials King Fahd University of Petroleum and Minerals Dhahran31261 Saudi Arabia Nanocatalysis Research Laboratory Department of Engineering Centro Universitario de los Altos University of Guadalajara Jalisco Tepatitlán de Morelos Mexico Department of Optometry College of Applied Medical Sciences King Saud University Riyadh11433 Saudi Arabia Department of Physical Metallurgy and Materials Technology Brandenburg Technical University Cottbus03046 Germany LAMIH UMR Université Polytechnique Hauts-de-France Valenciennes8201-F-59313 France

ISBN: (纸本)9783031806797

The equiatomic titanium-nickel alloy, known as nitinolNitinol, is a highly sought-after titanium-based alloy used in biomedical applications, particularly in orthopedic implants. Its outstanding properties, such as low density, shape memory effect, high wear and corrosion resistance, good biocompatibility, and low Young's modulus compared to stainless steelSteel or cobalt alloys, make it a truly impressive material. The present paper discusses the most significant findings on the tribological behavior of nitinolNitinol for biomedical applications. The crystallite size was estimated by X-ray diffraction (XRDX-ray Diffraction (XRD)), and the hardness was determined by nanoindentation. The study found that as the milling time increased, the size of the crystallite decreased while the hardness increased. The results of the tribological tests indicated that the enhanced mechanical propertiesmechanical properties, particularly the increased hardness and grain refinement of the alloys, contributed to the improved tribological performanceTribological performance of nitinolNitinol, specifically in terms of reduced wear rateWear rate and friction coefficientFriction coefficient. Therefore, nitinolNitinol, with its superior wear resistance, is a material that can be effectively customized for use in orthopedic implant applications. © The Minerals, Metals & Materials Society 2025.

关键词： Grain refinement

来源：评论

学校读者我要写书评

暂无评论

Characterizing Winter-Time Brown Carbon: Insights into Chemical and Light-Absorption Properties in Residential and Traffic Environments

SSRN

引用

SSRN 2024年

作者： Barreira, Luis M.F. Aurela, Minna Saarikoski, Sanna Li, Delun Teinilä, Kimmo Virkkula, Aki Niemi, Jarkko V. Manninen, Hanna Elina Pirjola, Liisa Petäjä, Tuukka Rönkkö, Topi Timonen, Hilkka Atmospheric Composition Research Finnish Meteorological Institute Helsinki00101 Finland Helsinki Region Environmental Services Authority Helsinki00066 Finland Department of Automotive and Mechanical Engineering Metropolia University of Applied Sciences Vantaa01600 Finland Aerosol Physics Laboratory Physics Unit Faculty of Engineering and Natural Sciences Tampere University Tampere33014 Finland Faculty of Science University of Helsinki Finland

Brown carbon (BrC) is an organic aerosol (OA) component that possesses light-absorbing properties in the UV-vis spectrum, impacting climate change. However, the current understanding of climate repercussions stemming from BrC emissions remains insufficient due to a lack of comprehensive knowledge regarding its chemical makeup, light-absorption, and the role of atmospheric aging in shaping BrC properties. This study investigates BrC in PM1 (particulate matter © 2024, The Authors. All rights reserved.

关键词： Air quality

来源：评论

学校读者我要写书评

暂无评论

Gallium Oxide as Photonic Integrated Platforms in the UV-Visible Spectra

Gallium Oxide as Photonic Integrated Platforms in the UV-Vis...

引用

2023 Conference on Lasers and Electro-Optics, CLEO 2023

作者： Zhou, Jingan Zhao, Xuan Xu, Rui Zhang, Xiang Fu, Kai Li, Tao Xu, Mingfei Luo, Shisong He, Ziyi Robinson, Jacob T. Zhu, Hanyu Ajayan, Pulickel M. Zhang, Xiaodong Zhao, Yuji Department of Electrical and Computer Engineering Rice University HoustonTX77005 United States Applied Physics Graduate Program Smalley-Curl Institute Rice University HoustonTX77005 United States Department of Materials Science and NanoEngineering Rice University HoustonTX77005 United States School of Electrical Computer and Energy Engineering Arizona State University TempeAZ85287 United States Nanofabrication facility Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Jiangsu Suzhou215123 China

We report the Ga2O3 as photonic integrated platforms and its nonlinear optical effects in the UV-visible spectra. A low propagation loss of 3.7 dB/cm and second-order susceptibility of x(2)=4.89xl03pm/V were obtained.... 详细信息

ISBN: (纸本)9781957171258

关键词： Gallium compounds

来源：评论

学校读者我要写书评

暂无评论

Large-eddy simulation of Rayleigh-Bénard convection at extreme Rayleigh numbers

arXiv

引用

arXiv 2022年

作者： Samuel, Roshan Samtaney, Ravi Verma, Mahendra K. Department of Mechanical Engineering Indian Institute of Technology Kanpur208016 India Mechanical Engineering Program Physical Science and Engineering Division King Abdullah University of Science and Technology Thuwal 23955 Saudi Arabia Department of Physics Indian Institute of Technology Kanpur208016 India

We adopt the stretched spiral vortex sub-grid model for large-eddy simulation (LES) of turbulent convection at extreme Rayleigh numbers. We simulate Rayleigh-Bénard convection (RBC) for Rayleigh numbers ranging from 106 to 1015 and for Prandtl numbers 0.768 and 1. We choose a box of dimensions 1:1:10 to reduce computational cost. Our LES yields Nusselt and Reynolds numbers that are in good agreement with the direct-numerical simulation (DNS) results of Iyer et al.1, albeit with a smaller grid size and at significantly reduced computational expense. For example, in our simulations at Ra = 1013, we use grids that are 1/120 times the grid-resolution as that of the DNS1. The Reynolds numbers in our simulations span 3 orders of magnitude from 1,000 to 1,700,000. Consistent with the literature, we obtain scaling relations for Nusselt and Reynolds numbers as Nu ∼ Ra0.317 and Re ∼ Ra0.497. We also perform LES of RBC with periodic side-walls, for which we obtain the corresponding scaling exponents as 0.343 and 0.477 respectively. Our LES is a promising tool to push simulations of thermal convection to extreme Rayleigh numbers, and hence enable us to test the transition to ultimate convection regime. © 2022, CC BY.

关键词： Large eddy simulation

来源：评论

学校读者我要写书评

暂无评论

Grid resilience enhancement by reference shaping based on gray-box model

IEEJ Transactions on Electronics, Information and Systems

引用

IEEJ Transactions on Electronics, Information and Systems 2021年第5期141卷 694-703页

作者： Sadamoto, Tomonori Inoue, Masaki Kaneko, Osamu Department of Mechanical Engineering and Intelligent Systems Graduate School of Informatics and Engineering The University of Electro-Communications East3-701A/618 1-5-1 Chofugaoka Chofu Tokyo182-8585 Japan Department of Applied Physics and Physico-Informatics Faculty of Science and Technology Keio University 3-14-1 Hiyoshi Kohoku-ku Yokohama Kanagawa223-0061 Japan

We propose a new method for enhancing resiliency of power systems integrated with renewable power resources. In the proposed method, we design a resilience enhancer that shapes reference values, generated by existing any power flow computation scheme such as EDC, so that the influence of faults on power system dynamics can be appropriately mitigated. The design of the resilience enhancer is based on so-called gray-box modeling, which is a fusion of a few prior knowledge on the grid and data acquired in its healthy operation. The effectiveness of the proposed method is investigated through a three-machine system integrated with three solar farms. © 2021 The Institute of Electrical Engineers of Japan.

关键词： Electric load flow

来源：评论

学校读者我要写书评

暂无评论

Proofreading mechanism for colloidal self-assembly

arXiv

引用

arXiv 2023年

作者： Zhu, Qian-Ze Du, Chrisy Xiyu King, Ella M. Brenner, Michael P. School of Engineering and Applied Sciences Harvard University CambridgeMA02139 United States Mechanical Engineering University of Hawai‘i at Mānoa HonoluluHI96822 United States Department of Physics Harvard University CambridgeMA02138 United States

Designing components that can robustly self-assemble into structures with biological complexity is a grand challenge for material science. Proofreading and error correction is required to improve assembly yield beyond equilibrium limits, using energy to avoid kinetic traps in the energy landscape. Here we introduce an explicit two staged proofreading scheme for patchy particle colloidal assemblies that substantially improves assembly yield and robustness. The first stage implements local rules whereby particles increase their binding strengths when they detect a local environment corresponding to a desired target. The second stage corrects remaining errors, adding a reverse pathway inspired by kinetic proofreading. The scheme shows significant yield improvements, eliminating kinetic traps, giving a much broader temperature range with high yield. Additionally, the scheme is robust against quenched disorder in the components. Our findings illuminate a pathway for advancing programmable design of synthetic living materials, potentially fostering the synthesis of novel biological materials and functional behaviors. © 2023, CC BY.

关键词： Error correction

来源：评论

学校读者我要写书评

暂无评论

Unusual thermal properties of graphene origami crease:A molecular dynamics study

引用

Green Energy & Environment 2022年第1期7卷 86-94页

作者： Ning Wei Yang Chen Kun Cai Yingyan Zhang Qingxiang Pei Jin-Cheng Zheng Yiu-Wing Mai Junhua Zhao Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology Jiangnan UniversityWuxi214122China Shanghai Institute of Applied Mathematics and Mechanics Shanghai Key Laboratory of Mechanics in Energy EngineeringShanghai UniversityShanghai200072China School of Engineering RMIT UniversityBundooraVIC3083Australia Institute of High Performance Computing A^(*)STAR138632Singapore Department of Physics and the Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices Xiamen UniversityXiamen361005China Xiamen University Malaysia 439000SepangSelangorMalaysia Centre for Advanced Materials Technology(CAMT) School of AerospaceMechanical and Mechatronic Engineering J07The University of SydneySydneyNSW2006Australia

Graphene is a two-dimensional material that can be folded into diverse and yet interesting nanostructures like macro-scale paper *** of graphene not only makes different morphological configurations but also modifies their mechanical and thermal *** by paper origami,herein we studied systemically the effects of creases,where sp^(2)to sp^(3)bond transformation occurs,on the thermal properties of graphene origami using molecular dynamics(MD)*** MD simulation results show that tensile strain reduces(not increases)the interfacial thermal resistance owing to the presence of the *** unusual phenomenon is explained by the micro-heat flux migration and stress *** findings on the graphene origami enable the design of the next-generation thermal management devices and flexible electronics with tuneable properties.

关键词： Graphene Origami Bond transformation Interfacial thermal resistance Molecular dynamics

来源：评论

学校读者我要写书评

暂无评论

Nernst-Ettingshausen effect in thin Pt and W films at low temperatures

arXiv

引用

arXiv 2023年

作者： Luo, Renjie Legvold, Tanner J. Chen, Liyang Natelson, Douglas Department of Physics and Astronomy Rice University HoustonTX77005 United States Applied Physics Graduate Program Smalley-Curl Institute Rice University HoustonTX77005 United States Department of Electrical and Computer Engineering Department of Materials Science and NanoEngineering Rice University HoustonTX77005 United States

As spin caloritronic measurements become increasingly common techniques for characterizing material properties, it is important to quantify potentially confounding effects. We report measurements of the Nernst-Ettingshausen response from room temperature to 5 K in thin film wires of Pt and W, metals commonly used as inverse spin Hall detectors in spin Seebeck characterization. Johnson-Nyquist noise thermometry is used to assess the temperature change of the metals with heater power at low temperatures, and the thermal path is analyzed via finite-element modeling. The Nernst-Ettingshausen response of W is found to be approximately temperature-independent, while the response of Pt increases at low temperatures. These results are discussed in the context of theoretical expectations and the possible role of magnetic impurities in Pt. Copyright © 2023, The Authors. All rights reserved.

关键词： Inverse problems

来源：评论

学校读者我要写书评

暂无评论

Ab Initio Structure Solutions from Nanocrystalline Powder Diffraction Data via Diffusion Models

arXiv

引用

arXiv 2024年

作者： Guo, Gabe Saidi, Tristan Luca Terban, Maxwell W. Valsecchi, Michele Billinge, Simon J.L. Lipson, Hod Columbia University Department of Computer Science New YorkNY10027 United States Momentum Transfer Mannheim68169 Germany Columbia University Department of Chemical Engineering New YorkNY10027 United States Columbia University Department of Applied Physics and Applied Mathematics New YorkNY10027 United States Columbia University Department of Mechanical Engineering New YorkNY10027 United States Stanford University Department of Computer Science StanfordCA94305 United States

A major challenge in materials science is the determination of the structure of nanometer sized objects. Here we present a novel approach that uses a generative machine learning model based on diffusion processes that is trained on 45,229 known structures. The model factors both the measured diffraction pattern as well as relevant statistical priors on the unit cell of atomic cluster structures. Conditioned only on the chemical formula and the information-scarce finite-size broadened powder diffraction pattern, we find that our model, PXRDNET, can successfully solve simulated nanocrystals as small as 10 Å across 200 materials of varying symmetry and complexity, including structures from all seven crystal systems. We show that our model can successfully and verifiably determine structural candidates four out of five times, with average error among these candidates being only 7% (as measured by post-Rietveld refinement R-factor). Furthermore, PXRDNET is capable of solving structures from noisy diffraction patterns gathered in real-world experiments. We suggest that data driven approaches, bootstrapped from theoretical simulation, will ultimately provide a path towards determining the structure of previously unsolved nano-materials. Copyright © 2024, The Authors. All rights reserved.

关键词： Rietveld refinement

来源：评论

学校读者我要写书评

暂无评论

Experimental Study and Atomistic Simulations on Gadolinium-Doped Manganese-Barium Based Y-Type Hexaferrites for Magnetic Hyperthermia

SSRN

引用

SSRN 2023年

作者： Khan Asghar, H.M. Noor ul Huda Ali, Muzaffar Gilani, Zaheer Abbas Shar, Muhammad Ali Ali, Syed Mansoor Khan, Muhammad Azhar Hisham, M. Manzoor, Alina Haq, Siraj Ul Rashid, Amin Ur Khan, Muhammad Yaqoob Department of Physics Balochistan University of Information Technology Engineering & Management Sciences Quetta87300 Pakistan Department of Mechanical & Energy Systems Engineering Faculty of Engineering and Informatics University of Bradford BradfordBD7 1DP United Kingdom Department of Physics and Astronomy College of Science King Saud University P.O. Box 2455 Riyadh11451 Saudi Arabia Institute of Physics The Islamia University of Bahawalpur Bahawalpur63100 Pakistan Department of Applied Physics Federal Urdu University of Arts Science and Technology Islamabad Pakistan Department of Physics Government College University Faisalabad38000 Pakistan Department of Physics Pukyong National University Busan48513 Korea Republic of Department of Applied Physical & Material Sciences University of Swat Pakistan Department of Physics Kohat University of Science and Technology Khyber Pakhtunkhwa Kohat26000 Pakistan

Gd-doped manganese barium y-type hexaferrite nanoparticles (Mn2Ba2GdxFe12-xO22) were synthesized using the sol-gel method. The magnetic properties, including saturation magnetization, coercivity, and Curie temperature (TC), were investigated for varying Gd concentrations (x = 0.00, 0.05, 0.10, 0.15, 0.20, 0.25). Results showed a decrease in these properties with increasing Gd concentration. The TC ranged from 254 K to 290 K. The experimental findings were compared to simulations conducted using the Vampire atomistic simulator, showing good agreement with the experimental TC values. Additionally, the samples were subjected to an alternating magnetic field with amplitude 170 Ôe and frequencies of 327 kHz and 734 kHz. Specific absorption rate (SAR) values were measured which increased with higher Gd concentration, peaking at 341 W/g for an alternating magnetic field of 170 Ôe and frequency of 734 kHz. Despite the TC being below the therapeutic range of 315 – 320 K, the samples exhibited high SAR values. © 2023, The Authors. All rights reserved.

关键词： Barium

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：