Modern Physics Letters B最新文献_第8页

Improved photocatalytic activities of TiO2/MoO3/Au nanocomposite prepared by hydrothermal method 水热法制备的 TiO2/MoO3/Au 纳米复合材料光催化活性的提高

IF 1.9 4区物理与天体物理

Modern Physics Letters B Pub Date : 2024-03-27 DOI: 10.1142/s0217984924410069

Akash Sawate, Niloy Paul, Akihiro Furube, Tetsuro Katayama, Pankaj Koinkar

引用次数: 0

Reaction–diffusion equation model in the electrical double layer for exploring the response signal in electrochemical sensing 用于探索电化学传感响应信号的电双层中的反应-扩散方程模型

IF 1.9 4区物理与天体物理

Modern Physics Letters B Pub Date : 2024-03-27 DOI: 10.1142/s021798492450307x

Yanke Zhang, Wei Chen, Qingteng Lai, Zhengchun Liu

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Irreversibility analysis for the EMHD flow of silver and magnesium oxide hybrid nanofluid due to nonlinear thermal radiation 非线性热辐射导致银和氧化镁混合纳米流体电磁流体力学流动的不可逆性分析

IF 1.9 4区物理与天体物理

Modern Physics Letters B Pub Date : 2024-03-27 DOI: 10.1142/s0217984924503378

Kotha Gangadhar, E. Mary Victoria, Abderrahim Wakif

{"title":"Irreversibility analysis for the EMHD flow of silver and magnesium oxide hybrid nanofluid due to nonlinear thermal radiation","authors":"Kotha Gangadhar, E. Mary Victoria, Abderrahim Wakif","doi":"10.1142/s0217984924503378","DOIUrl":"https://doi.org/10.1142/s0217984924503378","url":null,"abstract":"Hybrid nanofluids were expressed by heat-transfer fluids into greater surface dispersion capabilities, stability and diffusion related for traditional nanofluids. The effort on the flow of volumetric entropy generation and convective heat transport of MHD hybrid nanofluid is considered. Hybrid nanofluid involves the field over the orderly stretchable surface for variable heat flux with the resistance of electric field. Effect on convective heating and nonlinear thermal radiation is again contained in the interpreted figure. Mathematical equations such as momentum, energy, conservation of mass and entropy were collected as conversion to governing partial differential equations by ordinary differential equations, utilizing similarity variables. An efficient finite element method (FEM) is used. Numerical calculations were accomplished for silver–magnesium oxide water (Ag-MgO/H2O) hybrid nanofluid and conventional silver water (Ag-H2O) nanofluid. The graphs were created by the temperature, velocity, and entropy profiles. to analyse the impact on governing parameters. These skin friction and heat transfer rates are analysed through regression analysis. The important allegation expressed by the hybrid Nanofluid has the best heat transfer rate, which is related to convectional nanofluid. Further, It raised the Brinkman number and Reynolds number and developed a total entropy of the structure.","PeriodicalId":18570,"journal":{"name":"Modern Physics Letters B","volume":"2011 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140316979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on soliton behaviors of the complex nonlinear Fokas–Lenells equation utilizing different methods 利用不同方法研究复杂非线性 Fokas-Lenells 方程的孤子行为

IF 1.9 4区物理与天体物理

Modern Physics Letters B Pub Date : 2024-03-27 DOI: 10.1142/s0217984924503408

Najva Aminakbari, Yongyi Gu, Guoqiang Dang

{"title":"Study on soliton behaviors of the complex nonlinear Fokas–Lenells equation utilizing different methods","authors":"Najva Aminakbari, Yongyi Gu, Guoqiang Dang","doi":"10.1142/s0217984924503408","DOIUrl":"https://doi.org/10.1142/s0217984924503408","url":null,"abstract":"In this paper, we study the Fokas–Lenells equation, which is a derivation form of the nonlinear Schrödinger equation and can be used to describe nonlinearity in the propagation of optical pulses. To seek solutions for this nonlinearity, the Logistic method has been proposed in order to drive acceptable and understandable results regarding physical meaning. This method is defined based on the summation of an ordinary differential equation. Moreover, for further study, the Bernoulli <math altimg=\"eq-00001.gif\" display=\"inline\" overflow=\"scroll\"><mo stretchy=\"false\">(</mo><msup><mrow><mi>F</mi></mrow><mrow><mi>′</mi></mrow></msup><mo stretchy=\"false\">/</mo><mi>F</mi><mo stretchy=\"false\">)</mo></math>-expansion method is used by considering hypothetical solutions as a function of the Bernoulli equation. Subsequently, solutions of the Fokas–Lenells equation are successfully acquired, displaying efficient results in hyperbolic, trigonometric, and exponential equations. The importance of these results appears in the definition of the wave function under the consideration of the appropriate coefficients. Hence, computer simulation is used for better understanding of the generated results. The dynamic behaviors of these solutions are demonstrated in 3D graphs, contour maps, and line plots, under applying various parameters, solutions of the waves show different soliton behaviors, including bright-dark, bright, and breather solitons. The results indicate that the exerted methods are novel, reliable, and effective approaches which can be employed in a wide range of nonlinear differential equations. These methods and their begotten results are far from the complexities of mathematical structures and therefore go beyond previous efforts in the literature.","PeriodicalId":18570,"journal":{"name":"Modern Physics Letters B","volume":"67 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140311551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on flame retardant properties of epoxy composites using circular economy material hydroxyapatite combined with DOPO-HQ 利用循环经济材料羟基磷灰石和 DOPO-HQ 对环氧树脂复合材料阻燃性能的研究

IF 1.9 4区物理与天体物理

Modern Physics Letters B Pub Date : 2024-03-23 DOI: 10.1142/s0217984924410045

Ming-Yuan Shen, Chen-Feng Kuan, Hsu-Chiang Kuan, Lu-Ying Lin, Chin-Lung Chiang

{"title":"Study on flame retardant properties of epoxy composites using circular economy material hydroxyapatite combined with DOPO-HQ","authors":"Ming-Yuan Shen, Chen-Feng Kuan, Hsu-Chiang Kuan, Lu-Ying Lin, Chin-Lung Chiang","doi":"10.1142/s0217984924410045","DOIUrl":"https://doi.org/10.1142/s0217984924410045","url":null,"abstract":"In this study, hydroxyapatite (HA) was extracted from biological waste. HA was modified by N,N-diglycidylaniline (NDY) and DOPO-HQ to obtain the flame retardant which was added to epoxy resin (EP) to prepare the composite. The flame retardancy of the composites was measured by the horizontal and vertical combustion tester (UL-94) and the limiting oxygen index (LOI), the thermal property was carried out by the thermogravimetric analyzer (TGA), and the surface morphology was observed by the field emission scanning electron microscope (SEM). The UL-94 grade of pure EP is a fail grade, and the LOI value was 22%. After adding HA-NDY-DOPOHQ (weight ratio 1:2:1) 40<math altimg=\"eq-00001.gif\" display=\"inline\" overflow=\"scroll\"><mspace width=\".17em\"></mspace></math>wt.% flame retardant, the UL-94 grade of the composites was raised to V-1, and the LOI value promoted to 28%, a total increase of 6%. Composite materials had excellent thermal stability and flame retardancy and could be used in fireproof panels for energy storage systems to prevent thermal runaway, and could also be used in building materials.","PeriodicalId":18570,"journal":{"name":"Modern Physics Letters B","volume":"2015 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140200810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lump–kink and hybrid solutions of the extended (3+1)-dimensional potential KP equation in fluid mechanics 流体力学中扩展 (3+1) 维势能 KP 方程的块状扭结解和混合解

IF 1.9 4区物理与天体物理

Modern Physics Letters B Pub Date : 2024-03-23 DOI: 10.1142/s0217984924503251

Hengchun Hu, Yunman Tian

引用次数: 0

Effect of triphenylphosphine addition for the fast curing epoxy-anhydride CFRP system 添加三苯基膦对快速固化环氧酸酐 CFRP 系统的影响

IF 1.9 4区物理与天体物理

Modern Physics Letters B Pub Date : 2024-03-23 DOI: 10.1142/s0217984924410094

Jae-Wan Choi, Woo-Hyuk Son, Yun-Hae Kim, Sung-Youl Bae

{"title":"Effect of triphenylphosphine addition for the fast curing epoxy-anhydride CFRP system","authors":"Jae-Wan Choi, Woo-Hyuk Son, Yun-Hae Kim, Sung-Youl Bae","doi":"10.1142/s0217984924410094","DOIUrl":"https://doi.org/10.1142/s0217984924410094","url":null,"abstract":"In this study, we investigated the impact of adding Triphenylphosphine (TPP) at concentrations of 1<math altimg=\"eq-00001.gif\" display=\"inline\" overflow=\"scroll\"><mspace width=\".17em\"></mspace></math>wt.%, 3<math altimg=\"eq-00002.gif\" display=\"inline\" overflow=\"scroll\"><mspace width=\".17em\"></mspace></math>wt.%, and 5<math altimg=\"eq-00003.gif\" display=\"inline\" overflow=\"scroll\"><mspace width=\".17em\"></mspace></math>wt.% to an epoxy-anhydride system that displays, a degradation in mechanical properties at high temperatures. We conducted an analysis of cure behavior using differential scanning calorimetry and evaluated flexural, shear, and tensile strengths at room temperature. To assess heat resistance, CFRP specimens were exposed to 100∘C for 1<math altimg=\"eq-00004.gif\" display=\"inline\" overflow=\"scroll\"><mspace width=\".17em\"></mspace></math>h, and tensile strengths were subsequently measured. The addition of 3<math altimg=\"eq-00005.gif\" display=\"inline\" overflow=\"scroll\"><mspace width=\".17em\"></mspace></math>wt.% TPP resulted in a 5<math altimg=\"eq-00006.gif\" display=\"inline\" overflow=\"scroll\"><mspace width=\".17em\"></mspace></math>min reduction in the time required to reach a 95% degree of cure, but it was observed that mechanical properties at room temperature were compromised. CFRP exposed to 100∘C indicated that an increase in TPP content helped mitigate the degradation of mechanical properties.","PeriodicalId":18570,"journal":{"name":"Modern Physics Letters B","volume":"85 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140200806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New angular momentum coherent states via the nonlinear Bose SU(2) generators and their nonclassical behaviors 通过非线性玻色 SU(2) 发生器的新角动量相干态及其非经典行为

IF 1.9 4区物理与天体物理

Modern Physics Letters B Pub Date : 2024-03-23 DOI: 10.1142/s0217984924503214

Wei-Feng Wu

引用次数: 0

A homotopy-based computational scheme for two-dimensional fractional cable equation 基于同调的二维分数电缆方程计算方案

IF 1.9 4区物理与天体物理

Modern Physics Letters B Pub Date : 2024-03-23 DOI: 10.1142/s0217984924502920

C. V. Darshan Kumar, D. G. Prakasha, P. Veeresha, Mamta Kapoor

{"title":"A homotopy-based computational scheme for two-dimensional fractional cable equation","authors":"C. V. Darshan Kumar, D. G. Prakasha, P. Veeresha, Mamta Kapoor","doi":"10.1142/s0217984924502920","DOIUrl":"https://doi.org/10.1142/s0217984924502920","url":null,"abstract":"In this paper, we examine the time-dependent two-dimensional cable equation of fractional order in terms of the Caputo fractional derivative. This cable equation plays a vital role in diverse areas of electrophysiology and modeling neuronal dynamics. This paper conveys a precise semi-analytical method called the q-homotopy analysis transform method to solve the fractional cable equation. The proposed method is based on the conjunction of the q-homotopy analysis method and Laplace transform. We explained the uniqueness of the solution produced by the suggested method with the help of Banach’s fixed-point theory. The results obtained through the considered method are in the form of a series solution, and they converge rapidly. The obtained outcomes were in good agreement with the exact solution and are discussed through the 3D plots and graphs that express the physical representation of the considered equation. It shows that the proposed technique used here is reliable, well-organized and effective in analyzing the considered non-homogeneous fractional differential equations arising in various branches of science and engineering.","PeriodicalId":18570,"journal":{"name":"Modern Physics Letters B","volume":"102 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140200655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Control of NLO and photocatalysis properties based on the use of Sn-doped ZnO thin films for optoelectronics applications 基于光电子应用中掺杂锡的氧化锌薄膜的 NLO 和光催化特性控制

IF 1.9 4区物理与天体物理

Modern Physics Letters B Pub Date : 2024-03-23 DOI: 10.1142/s0217984924503159

S. Abed, H. Djaaboube, R. Aouati, A. Bouaballou, K. Bouchouit, A. Andrushchak, R. Wielgosz, S. Taboukhat, B. Sahraoui

{"title":"Control of NLO and photocatalysis properties based on the use of Sn-doped ZnO thin films for optoelectronics applications","authors":"S. Abed, H. Djaaboube, R. Aouati, A. Bouaballou, K. Bouchouit, A. Andrushchak, R. Wielgosz, S. Taboukhat, B. Sahraoui","doi":"10.1142/s0217984924503159","DOIUrl":"https://doi.org/10.1142/s0217984924503159","url":null,"abstract":"Thin films of zinc oxide (ZnO) have unique properties that make them suitable for various applications. In this study, we used a spray pyrolysis process to develop undoped ZnO and ZnO doped with Sn thin films on a glass substrate. We aimed to investigate the effect of Sn concentration on the optical, nonlinear optical, and structural properties of ZnO:Sn thin films. X-ray diffraction analysis revealed that all the deposited ZnO thin films exhibit polycrystalline hexagonal structures well-oriented along the c-axis. The obtained films were transparent in the visible range, with a transmittance between 70% and 80%. The optical energy bandgap values for the films varied from 3.16 eV to 3.29 eV. We also determined the second- and third-order nonlinear susceptibilities, which decreased with increasing Sn concentration. We investigated the photocatalytic activity of the ZnO-doped Sn thin films using methylene blue dye under visible light. Sn doping enhanced the photocatalytic activity of ZnO thin films, with constant rate values of 0.00046 and 0.00074 min<math altimg=\"eq-00001.gif\" display=\"inline\" overflow=\"scroll\"><msup><mrow></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></math> for ZnO and ZnO:Sn thin films, respectively.","PeriodicalId":18570,"journal":{"name":"Modern Physics Letters B","volume":"7 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140297786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0