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AI and Optical Data sciences IV 2023

作者： Ramezani, Fereshteh Parvez, Sheikh Fix, J. Pierce Battaglin, Arthur Whyte, Seamus Borys, Nicholas J. Whitaker, Bradley Electrical and Computer Engineering Department Montana State University Bozeman United States Department of Physics Montana State University Bozeman United States Materials Science Program Montana State University Bozeman United States Optical Technology Center Montana State University Bozeman United States

ISBN: (纸本)9781510659810

Computer vision algorithms can quickly analyze numerous images and identify useful information with high accuracy. Recently, computer vision has been used to identify 2D materials in microscope images. 2D materials have important fundamental properties allowing for their use in many potential applications, including many in quantum information science and engineering. In order to use these materials for research and product development, single-layer 2D crystallites must be prepared through an exfoliation procedure and then identified using reflected light optical microscopy. Performing these searches manually is a time-consuming and tedious task. Deploying deep learning-based computer vision algorithms for 2D material search can automate the flake detection task with minimal need for human intervention. In this work, we have implemented a new deep learning pipeline to classify crystallites of 2D materials based on coarse thickness classifications in reflected-light optical micrographs. We have used DetectorRS as the object detector and trained it on 177 images containing hexagonal boron nitride (hBN) flakes of varying thickness. The trained model achieved a high detection accuracy for the rare category of thin flakes ( © 2023 SPIE.

关键词： Object detection

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Dual Defects Co-Regulation of Biotemplate Derived Three-Dimensional Cobalt Phosphide to Enhance Pseudocapacitance Performance

SSRN

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SSRN 2023年

作者： Li, Kailin Xiao, Yuntao Zheng, Taizhong Sun, Qing Zhang, Yifan Teng, Hao Wang, Wanyu Yao, Kexin Rao, Jinsong Zhang, Yuxin College of Materials Science and Engineering Chongqing University Chongqing400044 China Multi-scale Porous Materials Center Institute of Advanced Interdisciplinary Studies College of Chemistry and Chemical Engineering Chongqing University Chongqing400044 China

Poor rate performance and low cycling stability are both considered as two major disadvantages when choosing cobalt phosphide as the electrode material of supercapacitor. Herein, we developed an effective strategy to ameliorate above disadvantages and synthesize cobalt phosphide with dual defects by introducing of phosphorus vacancies and doping of vanadium simultaneousl. The average oxidation state of Co ions in V-CoPx-1 decreases after the P vacancies are introduced, which can improve the electrical conductivity and provide more active sites for electrochemical reactions. Meanwhile, after the introduction of P vacancies and V heteroatoms, more point defects and unpaired electrons are generated, thus improving the ionic conductivity of the material. The as-synthesized V-CoPx-1 possesses a superior 829 F g-1 at 1 A g-1 and improved cycling life maintaining 91.3% of its original value after 5000 cycles. Moreover, a fabricated device with V-CoPx-1 (anode) and commercial active carbon (cathode) exhibits 43.3 Wh kg-1 at 800 W kg-1. This supercapacitor also delivers a superior rate performance maintaining 60% retention of specific capacitance from 1 A g-1 to 20 A g-1. This work provides an efficient strategy of defects regulation to boost the electrochemical performance, which hoped to offer insights for the improvement of cobalt phosphide. © 2023, The Authors. All rights reserved.

关键词： Supercapacitor

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HIGH-PERFORMANCE THERMOPLASTIC-BASED MAGNETIC COMPOSITES

HIGH-PERFORMANCE THERMOPLASTIC-BASED MAGNETIC COMPOSITES

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SAMPE 2023 Conference and Exhibition

作者： Arigbabowo, Oluwasola K. Tate, Jitendra Geerts, Wilhelmus J. Texas State University Materials Science Engineering and Commercialization Program 601 University Drive San MarcosTX78666 United States Ingram School of Engineering Texas State University 601 University Drive San MarcosTX78666 United States Department of Physics Texas State University 601 University Drive San MarcosTX78666 United States

ISBN: (纸本)9781934551431

Magnetic polymer-based composites combine the cost-effectiveness, low density, and manufacturing flexibility of conventional polymers with the unique characteristics of magnetic powders/fillers to form multifunctional magneto polymeric composites that offer superior properties to conventional materials. At higher temperatures, magnetic properties change significantly and the particles within the magnetic powders experience sporadic motion due to the heat which causes misalignment of the magnetic domains, leading to a decrease in magnetism. Due to these adverse temperature effects, high-performance polymers such as polyetheretherketone (PEEK), polyetherimide (PEI) or other high-temperature thermoplastics have been considered suitable matrix for the magnetic fillers, thereby creating a much wider usage for magneto polymeric composite in applications that requires higher temperature (typically above 175 oC). Thus, this review discusses the fabrication processes-injection molding, fused filament fabrication;magnetic performance, and applications of high-performance thermoplastic-based magnetic composites that can be viable for stringent engineering devices such as sensors, actuators, motors, and generators. © 2023 Soc. for the Advancement of Material and Process engineering. All rights reserved.

关键词： Fabrication

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Exploring light-cone distribution amplitudes from quantum computing

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science China(Physics,Mechanics & Astronomy) 2023年第8期66卷 57-65页

作者： Tianyin Li Xingyu Guo Wai Kin Lai Xiaohui Liu Enke Wang Hongxi Xing Dan-Bo Zhang Shi-Liang Zhu Guangdong Provincial Key Laboratory of Nuclear Science Institute of Quantum MatterSouth China Normal UniversityGuangzhou 510006China Guangdong-Hong Kong Joint Laboratory of Quantum Matter Southern Nuclear Science Computing Center South China Normal University.Guangzhou 510006China Department of Physics and Astronomy University of CaliforniaLos Angeles 90095USA Center of Advanced Quantum Studies Department of PhysicsBeijing Normal UniversityBejing 100875China Center for High Energy Physics Peking UniversityBeijing 100871China Guangdong-Hong Kong Joint Laboratory of Quantum Matter Frontier Research Institute for PhysicsSouth China Normal UniversityGuangzhou 510006China Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials School of Physics and Telecommunication EngineeringSouth China Normal UniversityGuangzhou 510006China

Light-cone distribution amplitudes(LCDAs)are essential nonperturbative quantities for theoretical predictions of exclusive highenergy processes in quantum chromodynamics(QCD).We demonstrate the prospect of calculating LCDAs on a quantum computer by applying a recently proposed quantum algorithm,with staggered fermions,to the simulation of the LCDA in the(1+1)-dimensional Nambu-Jona-Lasinio(NJL)model on classical *** agreement between the result from the classical simulation of the quantum algorithm and that from exact diagonalization justifies the proposed quantum *** find that the resulting LCDA in the NJL model exhibits features shared with the LCDAs obtained from the QCD.

关键词： light-cone distribution amplitude quantum algorithm NJL model

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Enhancement of the Seebeck Coefficient of Organic Thermoelectric materials via Energy Filtering of Charge Carriers

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CCS Chemistry 2021年第10期3卷 2415-2427页

作者： Xin Guan Jianyong Ouyang International Studies College National University of Defense TechnologyNanjingJiangsu 210012 Department of Materials Science and Engineering National University of SingaporeSingapore 117574

Recently,organic materials have emerged as nextgeneration thermoelectric(TE)materials because of their unique advantages including low cost,high mechanical flexibility,low or no toxicity,and low intrinsic thermal conductivity over inorganic TE ***,the Seebeck coefficient of organic materials with high TE properties is remarkably lower than that of its inorganic ***,it is important to improve their Seebeck coefficient and thus,overall TE properties.

关键词： the rmoelectric energy filtering Se ebeck coefficient power factor PEDOT

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Anisotropy in tensile properties and fracture behaviour of 316L stainless steel parts manufactured by fused deposition modelling and sintering

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Advances in Manufacturing 2022年第3期10卷 345-355页

作者： Lin-Ju Wen Xiao-Gang Hu Zhong Li Zhan-Hua Wang Ji-Kai Wu Qiang Zhu Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055GuangdongPeople's Republic of China Department of Mechanical Engineering Polytechnic University of Milan20156 MilanItaly SUSTechAcademy for Advanced Interdisciplinary Studies Shenzhen 518055GuangdongPeople's Republic of China Shenzhen Key Laboratory for Additive Manufacturing of High-performance Materials Shenzhen 518055GuangdongPeople's Republic of China Elementplus Material Technology Co.Ltd. Shenzhen 518055GuangdongPeople's Republic of China

Fused deposition modelling and sintering(FDMS)is a potential metal additive manufacturing technology due to its low cost and high *** mixture of metal powder and binder goes through heating,extrusion,debinding and sintering processes to produce the compact finished ***,it is generally believed that parts produced by FDMS possess poor and anisotropic tensile properties,which always attributes to the weak interlayer *** current work aimed to enhance tensile properties and better understand the anisotropic fracture behavior of the 316L stainless steel prepared by *** process optimization,the yield strength and ultimate tensile strength obtained in this work are increased by 26.1%and 15.2%,based on the highest performance reported in previous *** to the ultimate tensile strength,the performance difference between the horizontal and vertical directions has been reduced to 27%.Furthermore,the experimental results indicated that the clustered irregular shape holes evolved from primitive voids prefer to distribute in the build direction,resulting in anisotropic tensile *** is suggested that the mechanical properties could be improved by applying a smaller extrusion diameter and rolling-assisted *** addition,the current FDMS parts show qualified performance for producing the customized and small batch components.

关键词： Fused deposition modelling 316L stainless steel Anisotropy Mechanical properties Fracture behaviour

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Phase equilibria and thermodynamics assessment of the Co–Fe–Nb ternary system

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Intermetallics 2024年 168卷

作者： Hutabalian, Yohanes Hermana, Gita Novian Laksono, Andromeda Dwi Chen, Sinn-wen Department of Chemical Engineering National Tsing Hua University Taiwan Hsinchu30013 Taiwan Research and Development Center PT. Gotion Indonesia Materials Jakarta12950 Indonesia Department of Advanced Materials Engineering Bandung Polytechnic for Manufacturing West Java Bandung40135 Indonesia Department of Materials Science and Engineering National Taiwan University of Science and Technology Taiwan Taipei10672 Taiwan Study Program of Materials and Metallurgical Engineering Institut Teknologi Kalimantan Soekarno-Hatta Street Km. 15 Karang Joang East Kalimantan Balikpapan76127 Indonesia High Entropy Materials Center National Tsing Hua University Taiwan Hsinchu30013 Taiwan

The Co–Fe–Nb materials system is a crucial material for magnetic applications. Despite its importance, the phase equilibria and thermodynamic characteristics of this ternary system have not been explored in detail. This study employs the Calphad method to model the phase equilibria of the Co–Fe–Nb ternary system. To obtain the ternary interaction parameters, the experimental data on the isothermal sections at temperatures ranging from 700 °C to 1300 °C was evaluated. These findings indicate that the Co–Fe–Nb system contains no ternary compound, and the (Co,Fe)7Nb6 phase exists as a single solid solution. Significant solubility of the third element in the binary compounds of Co2Nb (Laves C14) and Fe2Nb (Laves C15) is also observed. The results are in good agreement with the experimental data. Furthermore, a liquidus projection of the system is presented, for the first time, revealing eight primary solidification phases in the Co–Fe–Nb ternary system. © 2024

关键词： Phase equilibria

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Development of Flame Retardant Stearic Acid Doped Graphite Powder and Magnesium Hydroxide Nanoparticles, Material for Thermal Energy Storage Applications 21

Development of Flame Retardant Stearic Acid Doped Graphite P...

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21st International Union of materials Research Societies International Conference in Asia, IUMRS-ICA 2021

作者： Han, Kyaw Thet Lhosupasirirat, Siraprapa Srikhirin, Pongsid Houngkamhang, Nongluck Srikhirin, Toemsak Materials Science and Engineering Program School of Materials Science and Innovation Faculty of Science Mahidol University Bangkok10400 Thailand Ramkhamhaeng University Bangkok Thailand College of Nanotechnology King Mongkut's Institute of Technology Ladkrabang Bangkok10520 Thailand Research Network of NANOTEC Mahidol University National Nanotechnology Center Thailand Department of Physics Faculty of Science Mahidol University 272 Rama VI Road Ratchathewi District Bangkok10400 Thailand

Nano-enhanced organic phase change material (PCM) composite consists of stearic acid (SA, act as the thermal storage media), graphite powder(GP, function as thermal conductor), and magnesium hydroxide nanoparticles(nMH), micro-sized (MMH), function as the flame retarder), were formulated and investigated for their thermophysical properties and flammability. The flame-retardant properties of nano-enhanced composite PCM were evaluated by using the burning test. Phase change temperature, phase change latent heat, and thermal conductivity were obtained by the T-history method. To reduce the flammability, 5wt% of MH with 0.8µm and 200nm were added to PCMs. 1wt% of GP improved thermal conductivity of stearic acid from 0.245 to 0.4887 W/mk, and doping of flame-retardant nanoparticles to PCM showed the reduction of flammability and slightly effecting on latent heat of PCM. nMH were found to work better for stearic acid flammability than MMH, where combustion time of 0.1g pure stearic acid(SA) was decreased from 41s to 17s and 23s. For nano-sized(SA/nMH) and micron-sized(SA/MMH)composites, the latent heat of pure PCM dropped from 171.26 to 124.85KJ/kg, but micron-sized addition negatively affects latent heat values by reducing from 171.26 to 88.87 KJ/kg. The results confirmed that nMH/GP/SA composite could reduce flammability without showing a negative impact on storage capacity. © Published under licence by IOP Publishing Ltd.

关键词： Phase change materials

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Study of Silicon Nitride Etched by Cyclic Atomic Layer Etching

Study of Silicon Nitride Etched by Cyclic Atomic Layer Etchi...

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2022 IET International Conference on engineering Technologies and Applications, IET-ICETA 2022

作者： Yang, Tsung-Ying Kuo, Mei-Yan Chang, Edward-Yi National Yang Ming Chiao Tung University International College of Semiconductor Technology Hsinchu Taiwan National Yang Ming Chiao Tung University Graduate Program for Nanotechnology Department of Materials Science and Engineering Hsinchu Taiwan

ISBN: (数字)9781665491389

ISBN: (纸本)9781665491389

In this work, cyclic atomic layer etching (ALE) was used to etch silicon nitride (SiN) to find its working conditions. To understand the mechanism behind it, we tested the ALE adsorption effect and the removal effect of the ALE working window. Also, we made a comparison with the etching RMS of normal etching ICP and showed that ALE has better etch flatness. This demonstrates that ALE has a potential ability to become a reliable and stable etching technology in the future. © 2022 IEEE.

关键词： Silicon nitride

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Lower lumbar vertebrae replacement by FEA based assessment of suitable ceramic polymer composites 2

Lower lumbar vertebrae replacement by FEA based assessment o...

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2nd International Conference on Future Technologies in Manufacturing, Automation, Design and Energy

作者： Prasad, Prakriti Roy, Shatakshi Bhavsar, Kathan Chadha, Utkarsh Kataray, Tarun Vezhavendhan, R. Eticha, Tolera Kuma Tamilnadu Vellore632014 India Tamilnadu Vellore632014 India Department of Materials Science and Engineering School of Graduate Studies University of Toronto TorontoONM5S 1A1 Canada Department of Biology College of Natural and Computational Sciences Ambo University Ambo Ethiopia

ISBN: (纸本)9789819912902

Using bio-materials to develop a safe, secure, and prime substitute as an external entity to interact inside a human environment is a demanding area of research and expertise. The lumbar spine is the most common site for injury in the spinal column as it bears the majority of the human body's weight while also undergoing significant prolonged loading and stress. In the same direction, a cost-effective Artificial Lumbar vertebra is designed and recognized to be implanted in the spinal region of a body to replace injured or disfigured counterparts. By harnessing the power of 3D bioprinting, biomaterials, and FEA, the paper proves that a simple bio-printed flexible lumbar vertebrae can be integrated into the body to work in conjunction with the rest of the spinal cord just as any other of the vertebrae do, thereby working in coordination with humans. The material thus obtained will be capable of replacing the injuries in the vertebrae caused by mechanical failures like compressive loading, vertebral slip, or vertebral joint fusion. An overall lightweight structure consisting of a firm material is looked forward to for the paper's fusion. This insight, research, and design have led to the development of the research paper. © 2023 Elsevier Ltd. All rights reserved.

关键词： Finite element method

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