Modern Physics Letters B最新文献_第2页

Effects of promoter and dedoping process on electrorheological response of polyaniline-graft-chitosan copolymer 促进剂和掺杂工艺对聚苯胺-接枝壳聚糖共聚物电流变响应的影响

Modern Physics Letters B Pub Date : 2024-05-18 DOI: 10.1142/s0217984924420077

M. Cabuk, Mustafa Yavuz, H. Unal

{"title":"Effects of promoter and dedoping process on electrorheological response of polyaniline-graft-chitosan copolymer","authors":"M. Cabuk, Mustafa Yavuz, H. Unal","doi":"10.1142/s0217984924420077","DOIUrl":"https://doi.org/10.1142/s0217984924420077","url":null,"abstract":"In this study, electrorheological (ER) properties of biodegradable and conducting polyaniline-graft-chitosan (PAni-g-CS) copolymer particles were investigated. For this purpose, PAni and PAni-g-CS particles were synthesized by using in situ oxidative radicalic polymerization method. At first, PAni and PAni-g-CS/silicone oil (SO) ER suspensions (15% V/V) were subjected to external electric field and they exhibited low ER activity. When the external electric field strengths ([Formula: see text] were increased, both the suspensions showed electrical breakdown. Therefore, virgin PAni and PAni-g-CS were first subjected to dedoping process by treating with 1.0 M NaOH(aq) and non-ionic surfactant Triton X-100 (T-X) surfactant to enhance the expected ER activity and prevent the electrical breakdown. But we observed that the addition of T-X as promoter had no significant effect on the ER activity. On the other hand, electric filed-induced viscosities of both the suspensions were observed to enhance after the dedoping (DD) process and electrical breakdown prohibited. After the DD process, DD PAni-g-CS/SO ER system exhibited the highest electric field-induced viscosity by reaching 400[Formula: see text]Pa[Formula: see text]⋅[Formula: see text]s at [Formula: see text][Formula: see text]kV/mm. The highest ER efficiency was also obtained for DD PAni-g-CS/SO system at 15% (V/V) as 79. Additionally, typical shear thinning non-Newtonian viscoelastic behavior was observed under externally applied E. The conduction model of DD PAni-g-CS/SO system was determined to well fit the conduction model by showing a slope of [Formula: see text] calculated from the E vb. yield stress graph. In conclusion, conducting and biodegradable-dedoped PAni-g-CS particles would be a good candidate for potential ER applications as dry-based ER materials having high colloidal stability of 76%.","PeriodicalId":503716,"journal":{"name":"Modern Physics Letters B","volume":"121 37","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141125160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel design of layered recurrent neural networks for fractional order Caputo–Fabrizio stiff electric circuit models 针对分数阶卡普托-法布里齐奥僵硬电路模型的分层递归神经网络新设计

Modern Physics Letters B Pub Date : 2024-05-18 DOI: 10.1142/s0217984924503937

Aneela Kausar, Chuan-Yu Chang, Muhammad Asif Zahoor Raja, Muhammad Shoaib

{"title":"A novel design of layered recurrent neural networks for fractional order Caputo–Fabrizio stiff electric circuit models","authors":"Aneela Kausar, Chuan-Yu Chang, Muhammad Asif Zahoor Raja, Muhammad Shoaib","doi":"10.1142/s0217984924503937","DOIUrl":"https://doi.org/10.1142/s0217984924503937","url":null,"abstract":"Electrical engineering models often rely on complex circuit configurations that facilitate the dynamic flow of electrically charged particles within a closed conductive network. These circuits serve as essential tools for simulating and analyzing diverse electrical systems and components. This paper introduces a study on nonlinear fractional circuits modeling through the development of a stochastic neuro-computational artificial intelligent-based solver to address mathematical models governing the Fractional order Caputo–Fabrizio stiff electric circuit model (FO-CFSECM) by manipulating the knacks of layered recurrent neural networks (LRNNs) trained with Gradient-based local search algorithm (GLA). In fractional calculus, the Caputo–Fabrizio (CF) fractional order derivative (FOD) emerges as a powerful instrument, binding its capabilities to deliver remarkably accurate solutions for fractional stiff systems. The objective of this work is to exploit the numerical treatment comprehensively for the dynamics of fractal Resistor–Capacitor (RC) and fractal Resistor–Inductor (RL) circuit models by introducing the CF fractional operator. Through the application of artificial intelligence-based soft computing and advanced back-propagative deep neural networks, a deeper understanding of the behavior and distinctive characteristics inherent in these models is sought. The Levenberg–Marquardt optimizer serves as an efficient training GLA tool for learning of LRNNs weights of fractal RL/RC circuit models. The comparative studies on variants of FO-CFSECM demonstrate that LRNNs achieve an impressive mean square error (MSE) ranging from 10[Formula: see text] to 10[Formula: see text] and absolute error (AE) within 10[Formula: see text] to 10[Formula: see text]. The accuracy, reliability, and efficiency of LRNNs for solving the FO-CFSECM were further validated through MSE, AE, controlling parameters of state transitions, error histograms, and correlation measures.","PeriodicalId":503716,"journal":{"name":"Modern Physics Letters B","volume":"116 28","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141125926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reducing global warming and mitigating PM2.5 air pollution with electrorheology 用电流变学减少全球变暖和减轻 PM2.5 空气污染

Modern Physics Letters B Pub Date : 2024-05-18 DOI: 10.1142/s0217984924420089

R. Tao, Xiaojun Xu, Zhi Chen

{"title":"Reducing global warming and mitigating PM2.5 air pollution with electrorheology","authors":"R. Tao, Xiaojun Xu, Zhi Chen","doi":"10.1142/s0217984924420089","DOIUrl":"https://doi.org/10.1142/s0217984924420089","url":null,"abstract":"Black carbon, a part of harmful PM2.5 air pollution, is the second largest contributor to global warming. Due to per unit of mass, black carbon has a warming impact on climate 460–1,500 times stronger than CO2. UNEP emphasizes that the black carbon issue is more urgent than CO2 now. Unfortunately, current technologies cannot help large factories in preventing emission of black carbon particles into air because they fail to catch them effectively. Therefore, a new technology, which can catch black carbon and other PM2.5 pollution effectively, is critically needed. Here we report that electrorheology is the solution we are looking for. Under a strong electric field, black carbon and other particles are polarized. When the polluted air flow becomes a special flow with pollution particles moving adjacent to the electrodes, black carbon and other particles are captured by the electrodes effectively. Our tests have confirmed that with this technology, more than 98% black carbon and other PM2.5 particles can be caught. Moreover, this technology is not only suitable as incoming air filters, but also appropriate for large factories in preventing emitting black carbon and pollution into air. We hope that electrorheology will improve our environment and reduce global warming effectively.","PeriodicalId":503716,"journal":{"name":"Modern Physics Letters B","volume":"115 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141125527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of soliton solutions for the NWHS model with temperature distribution in an infinitely long and thin rod 无限细长杆中温度分布的 NWHS 模型孤子解研究

Modern Physics Letters B Pub Date : 2024-05-18 DOI: 10.1142/s0217984924503925

M. Z. Baber, Hadi Rezazadeh, M. Iqbal, Nauman Ahmed, M. Yasin, M. A. Hosseinzadeh

引用次数: 0

Strain engineering of electronic, mechanical, and optical properties of orthorhombic III–V group monolayers by first principles calculations 通过第一性原理计算正交Ⅲ-Ⅴ族单层的电子、机械和光学特性的应变工程学

Modern Physics Letters B Pub Date : 2024-05-18 DOI: 10.1142/s0217984924503755

Xuehu Jin, Can Yao, Yunxi Qi, Jun Zhao, Hui Zeng

{"title":"Strain engineering of electronic, mechanical, and optical properties of orthorhombic III–V group monolayers by first principles calculations","authors":"Xuehu Jin, Can Yao, Yunxi Qi, Jun Zhao, Hui Zeng","doi":"10.1142/s0217984924503755","DOIUrl":"https://doi.org/10.1142/s0217984924503755","url":null,"abstract":"Using first principles calculations, we systematically investigated the effects of strain engineering on the electronic, mechanical, and optical properties of two-dimensional (2D) orthorhombic III–V group materials, including BN, BP, BAs, AlN, AlP, and GaN. It is shown that all the III–V orthorhombic monolayers exhibit excellent mechanical anisotropy for Young’s modulus, Shear modulus, and Poisson’s ratio, especially for the AlN and GaN monolayers. AlN, AlP, and GaN are predicted to be indirect bandgap semiconductors, with their bandgap of 0.70, 0.15, and 0.53 eV, respectively. And BN is demonstrated to be a direct bandgap semiconductor (0.63 eV). Under uniaxial tensile strains, their electronic structures have non-monotonic anisotropic variations and these monolayers can be effectively modulated from metal to semiconductor, experiencing indirect–direct bandgap transitions. In addition, all the orthorhombic III–V materials exhibit highly anisotropic light-harvesting performances and the optical absorbance can be efficiently tailored with tensile strains applied along a- and b-directions. The strong optical absorptions in the visible light regions suggested that AlN, BN, and GaN may be optically tunable 2D materials for component absorbance layers for solar cell applications. The excellent anisotropic and tunable electronic, mechanical, and optical performances indicate that the orthorhombic III–V monolayers are promising candidates for potential applications of optoelectronics and photovoltaics.","PeriodicalId":503716,"journal":{"name":"Modern Physics Letters B","volume":"111 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141125644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Conductive polymer composites-enable self-sensing twisted string actuators 导电聚合物复合材料实现自感应扭绳致动器

Modern Physics Letters B Pub Date : 2024-05-18 DOI: 10.1142/s0217984924420028

Chanchan Xu, Shuai Dong, Yifan Ma, Jingwei Zhan, Xiaojie Wang

{"title":"Conductive polymer composites-enable self-sensing twisted string actuators","authors":"Chanchan Xu, Shuai Dong, Yifan Ma, Jingwei Zhan, Xiaojie Wang","doi":"10.1142/s0217984924420028","DOIUrl":"https://doi.org/10.1142/s0217984924420028","url":null,"abstract":"Twisted string actuators (TSAs) are innovative linear soft actuators that can mimic natural muscle contraction. However, obtaining feedback on their stroke requires cumbersome external sensors that compromise their compliance. We addressed this by developing self-sensing strings using conductive polymer composites (CPCs). The CPC strings exhibit electrical resistance changes in response to strain, enabling stroke sensing by the strings themselves. We fabricated CPCs strings with varying concentrations of multi-walled carbon nanotubes (MWCNTs). Characterization revealed excellent conductivity, tensile strength exceeding 30 N, tunable strain sensitivity via MWCNTs concentration variation, as well as stable and repeatable strain-dependent resistance changes. Optimization via a high-strength core fiber enabled the CPCs strings to withstand over 6[Formula: see text]kg loading with enhanced stroke and minimal resistance variation. We achieved at least a 97.8% linear correlation between resistance change rate and contraction rate in twisting experiments. This research provides a self-contained stroke sensor compatible with high-load soft TSAs, overcoming limitations of external sensors. The simple yet effective sensing mechanism could spur adoption of TSA in robotics.","PeriodicalId":503716,"journal":{"name":"Modern Physics Letters B","volume":"108 34","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141125676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stochastic supervised networks for numerical treatment of Eyring–Powell nanofluid model with Darcy Forchheimer slip flow involving bioconvection and nonlinear thermal radiation 随机监督网络用于涉及生物对流和非线性热辐射的具有达西-福克海默滑移流的 Eyring-Powell 纳米流体模型的数值处理

Modern Physics Letters B Pub Date : 2024-05-18 DOI: 10.1142/s0217984924504001

Z. Shah, Muhammad Asif Zahoor Raja, Muhammad Shoaib, I. Khan, A. Kiani

{"title":"Stochastic supervised networks for numerical treatment of Eyring–Powell nanofluid model with Darcy Forchheimer slip flow involving bioconvection and nonlinear thermal radiation","authors":"Z. Shah, Muhammad Asif Zahoor Raja, Muhammad Shoaib, I. Khan, A. Kiani","doi":"10.1142/s0217984924504001","DOIUrl":"https://doi.org/10.1142/s0217984924504001","url":null,"abstract":"The aim of this study is to estimate the solution of Eyring–Powell nanofluid model (EPNFM) with Darcy Forchheimer slip flow involving bioconvection and nonlinear thermal radiation by employing stupendous knacks of neural networks-based Bayesian computational intelligence (NNBCI). A dataset for the designed NNBCI is generated with Adam numerical procedure for sundry variations of EPNFM by use of several variants including slip constant, Schmidt number, mixed convection parameter, Prandtl number, and bioconvection Lewis parameter. Numerical computations of various physical parameters of interest on EPNFM are estimated with artificial intelligence-based NNBCI and compared with reference data values generated with Adam’s numerical procedure. The accuracy, efficacy, and convergence of the proposed NNBCI to successfully solve the EPNFM are endorsed through M.S.E, statistical instance distribution studies of error-histograms, and assessment of regression metric. The proposed dataset exhibits a close alignment with the reference dataset based on error analysis from level E[Formula: see text] to E[Formula: see text] authenticates the precision of the designed procedure NNBCI for solving EPNFMs. The executive and novel physical importance of parameters governing the flow, such as nanofluid velocity, temperature, and concentration profiles, are discussed. The observations imply that the presence of the slip constant, mixed convection parameter and Lewis number influences the velocity of the nanofluid. However, it is observed that temperature of the nanofluid declines for higher values of Prandl number while the concentration of nanofluid improves with increasing values of Schmidt number.","PeriodicalId":503716,"journal":{"name":"Modern Physics Letters B","volume":"109 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141125656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Crystal structure, magnetic and electrical transport properties of titanium-doped half-Heusler alloys Ni1−xTixMnSb 掺钛半赫斯勒合金 Ni1-xTixMnSb 的晶体结构、磁性和电传输特性

Modern Physics Letters B Pub Date : 2024-05-18 DOI: 10.1142/s0217984924503627

A. Rutkauskas, S. Kichanov, T. Vershinina, G. S. Rymski, N. Dang, T. P. Hoang, T. A. Tran, N. Phan, D. P. T. Tien, P. D. Thinh, D. T. Khan

引用次数: 0

Unveiling ductile, rare-earth-free structural materials: A DFT exploration of MnTi and MnZr 揭开无稀土韧性结构材料的神秘面纱：锰钛和锰锌的 DFT 探索

Modern Physics Letters B Pub Date : 2024-05-18 DOI: 10.1142/s0217984924503743

Mohammed Benaissa, M. Bouchaour, Laarej Merad, N. Maloufi, Hayet Si Abdelkader, Mustafa Bayram, Ruqayyah Haider Ghani, Muataz S. Alhassan, Younes Menni

{"title":"Unveiling ductile, rare-earth-free structural materials: A DFT exploration of MnTi and MnZr","authors":"Mohammed Benaissa, M. Bouchaour, Laarej Merad, N. Maloufi, Hayet Si Abdelkader, Mustafa Bayram, Ruqayyah Haider Ghani, Muataz S. Alhassan, Younes Menni","doi":"10.1142/s0217984924503743","DOIUrl":"https://doi.org/10.1142/s0217984924503743","url":null,"abstract":"This paper presents a theoretical exploration of the electronic, structural, and mechanical attributes inherent in three rare-earth-free intermetallic compounds, namely, MnTi, MnZr, and MnHf. Employing density functional theory (DFT) calculations with the Implementation of projector augmented wave (PAW); our investigation adopts the supercell approach to meticulously determine the structural and mechanical properties of these materials. The findings reveal that MnTi and MnZr exhibit intrinsic ductility, positioning them as viable contenders for applications demanding high-strength structures. In contrast, MnHf demonstrates mechanical instability. This study provides promising insights into the mechanical characteristics of MnTi and MnZr, underscoring their potential as sustainable structural materials, given the abundance and non-toxic nature of their constituents. The research findings presented herein contribute to the understanding of rare-earth-free intermetallics, offering valuable information for applications in materials science and engineering.","PeriodicalId":503716,"journal":{"name":"Modern Physics Letters B","volume":"109 29","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141125576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanoparticle aggregation kinematics and nanofluid flow in convectively heated outer stationary and inner stretched coaxial cylinders: Influenced by linear, nonlinear, and quadratic thermal radiation 纳米粒子在对流加热的外静止和内拉伸同轴圆柱体中的聚集运动学和纳米流体流动：受线性、非线性和二次热辐射的影响

Modern Physics Letters B Pub Date : 2024-05-18 DOI: 10.1142/s0217984924503615

K. Albalawi, K. Karthik, J. Madhu, Mona Bin-Asfour, B. Alkahtani, Ibtehal Alazman, R. N. Kumar

{"title":"Nanoparticle aggregation kinematics and nanofluid flow in convectively heated outer stationary and inner stretched coaxial cylinders: Influenced by linear, nonlinear, and quadratic thermal radiation","authors":"K. Albalawi, K. Karthik, J. Madhu, Mona Bin-Asfour, B. Alkahtani, Ibtehal Alazman, R. N. Kumar","doi":"10.1142/s0217984924503615","DOIUrl":"https://doi.org/10.1142/s0217984924503615","url":null,"abstract":"The consequence of nanoparticle aggregation and convective boundary condition on the nanofluid stream past the co-axial cylinder with radiation impact is investigated in the present examination. The influence of linear, nonlinear, and quadratic thermal radiation on the nanofluid flow is analyzed. The outer cylinder stays stable, while the inner cylinder deforms horizontally in the axial direction, allowing fluid to flow. By using similarity variables, the governing equations are transformed into ordinary differential equations (ODEs). Subsequently, the Runge–Kutta–Fehlberg fourth-fifth order (RKF-45) method is employed to solve the reduced ODEs. The upshot of several nondimensional terms on the temperature and velocity profiles is displayed with graphical representation. The comparison of linear, quadratic, and nonlinear thermal radiation on the thermal profile is illustrated. The upsurge in curvature parameter increases velocity and thermal profile. The increase in radiation parameter intensifies the temperature profile. The thermal profile improves with a rise in the values of radiation parameter. The radiation parameter generates thermal energy in the flow zone, which is why the temperature field has improved. The thermal Biot number exhibits an increasing response with temperature and thermal boundary layer thickness. The linear thermal radiation shows better heat transfer compared to quadratic and nonlinear thermal radiation.","PeriodicalId":503716,"journal":{"name":"Modern Physics Letters B","volume":"125 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141125138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0