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Tunable IK-shaped metamaterial with electromagnetically induced transparency for opto-logic and sensing applications 具有电磁感应透明度的可调谐k形超材料,用于光逻辑和传感应用
IF 4.4 2区 物理与天体物理
Results in Physics Pub Date : 2025-07-16 DOI: 10.1016/j.rinp.2025.108361
Tingwei Wang, Daoye Zheng, Yunche Zhu, Wenqing Zheng, Yu-Sheng Lin
{"title":"Tunable IK-shaped metamaterial with electromagnetically induced transparency for opto-logic and sensing applications","authors":"Tingwei Wang,&nbsp;Daoye Zheng,&nbsp;Yunche Zhu,&nbsp;Wenqing Zheng,&nbsp;Yu-Sheng Lin","doi":"10.1016/j.rinp.2025.108361","DOIUrl":"10.1016/j.rinp.2025.108361","url":null,"abstract":"<div><div>This study presents a multifunctional tunable IK-shaped metamaterial (TIKM) for the applications of opto-logic devices and high-sensitive environmental sensors. The TIKM comprises two distinct components, which are a dynamically movable K-shaped and a stationary I-shaped metamaterials. Simulations reveal that the TIKM exhibits polarization dependent characteristic. By modulating the distance (<em>d</em>) and height (<em>h</em>) parameters between two components, this advancement achieved dynamic modulations over the transmission and electromagnetic responses. The electromagnetic responses indicate that there exist several resonant modes, forming an electromagnetically induced transparency (EIT) effect which is highly connected to structural parameters. This tunability makes TIKM a promising candidate for optical switch and opto-logic gate operation. The logic gate operation is demonstrated by interpreting the vertical and horizontal displacements of the movable K-shaped metamaterial as binary inputs, which can transfer the light signals to physical signals. At 0.587 THz, the gate enters an “XNOR” response, while at 0.703 THz, it exhibits an “AND” response. TIKM exhibits different electromagnetic responses by changing the environmental refractive index from 1.0 to 2.0. The red-shifting range of resonances is 0.660 THz. The maximum quality (Q) factor is 132, with a full width at half maximum (FWHM) of 0.005 THz at 0.667 THz and the maximum sensitivity to the environmentally refractive index changes is 72 GHz/RIU. These results provide the potential for utilization in the fields of intelligent sensing applications.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"75 ","pages":"Article 108361"},"PeriodicalIF":4.4,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Theoretical investigation of multifunctional properties: Electronic, optical, and lattice thermal conductivity characteristics of ZrAlB, NbAlB, and MoAlB 多功能性质的理论研究:ZrAlB、NbAlB和MoAlB的电子、光学和晶格导热特性
IF 4.4 2区 物理与天体物理
Results in Physics Pub Date : 2025-07-14 DOI: 10.1016/j.rinp.2025.108359
Shengzhao Wang , Lanli Chen , Bin Liu
{"title":"Theoretical investigation of multifunctional properties: Electronic, optical, and lattice thermal conductivity characteristics of ZrAlB, NbAlB, and MoAlB","authors":"Shengzhao Wang ,&nbsp;Lanli Chen ,&nbsp;Bin Liu","doi":"10.1016/j.rinp.2025.108359","DOIUrl":"10.1016/j.rinp.2025.108359","url":null,"abstract":"<div><div>In this paper, we investigate the photoelectric properties and thermal conductivity of ZrAlB, NbAlB, and MoAlB using first-principles calculations. Our findings indicate that ZrAlB, NbAlB, and MoAlB exhibit metallic behavior and possess a high absorption coefficient within a specific range. At 0.01 eV photon energy, the static dielectric constants <em>ε<sub>2</sub></em> for ZrAlB, NbAlB, and MoAlB are measured at 109.43, 105.57, and 107.89, respectively. Additionally, the reflectivity of ZrAlB, NbAlB, and MoAlB is notably high, exceeding 35 % in certain frequency bands. The thermal conductivities of ZrAlB, NbAlB, and MoAlB are 3.2 W/(m·K), 6.6 W/(m·K), and 41.0 W/(m·K), respectively, which align with the trends observed in their Grüneisen parameters. This paper provides a comprehensive analysis of the structure, electronic properties, optical properties, and thermal conductivity of these three materials through theoretical calculations, offering a valuable theoretical foundation for their applications in optoelectronics, photothermal technologies, and other fields.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"75 ","pages":"Article 108359"},"PeriodicalIF":4.4,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Interacting dark energy models within the context of the particle creation framework: A dynamical systems study 粒子产生框架背景下的相互作用暗能量模型:一个动力系统研究
IF 4.4 2区 物理与天体物理
Results in Physics Pub Date : 2025-07-14 DOI: 10.1016/j.rinp.2025.108350
Aman Shukla , Ashutosh Singh , Raghavendra Chaubey
{"title":"Interacting dark energy models within the context of the particle creation framework: A dynamical systems study","authors":"Aman Shukla ,&nbsp;Ashutosh Singh ,&nbsp;Raghavendra Chaubey","doi":"10.1016/j.rinp.2025.108350","DOIUrl":"10.1016/j.rinp.2025.108350","url":null,"abstract":"<div><div>In this paper, we employ the dynamical system method to probe the cosmological evolution in a matter creation model admitting interacting dark energy behavior. The set of dynamical variables in this framework allows one to trace the cosmic evolution in comparison to the <span><math><mi>Λ</mi></math></span> cold dark matter (<span><math><mi>Λ</mi></math></span>CDM) model. The critical points in cosmological phase space are analyzed for their stability nature. The numerical integrations of the autonomous system are used to extract the evolution of cosmological quantities of the model, subjected to the initial condition compatible with observational data. The resulting cosmological behavior observed from the dynamical variables, cosmographic parameters and statefinder analysis illustrate the similarity as well as deviations from the <span><math><mi>Λ</mi></math></span>CDM model during different cosmic expansion phases. The autonomous systems are also used to study the classical stability of models under consideration. The interacting dark energy scenario in the matter creation mechanism leads to the universe evolution, which traces their journey from the decelerating phase (composed of radiation and matter phase) into accelerating phase dominated by a negative pressure component, which is directly consistent with observations.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"75 ","pages":"Article 108350"},"PeriodicalIF":4.4,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Theoretical study of the electronic and magnetic properties of Cd1-xMnxTe quantum wire under the combined effects of the applied magnetic field, spin orbit coupling and exchange effects 外加磁场、自旋轨道耦合和交换效应联合作用下Cd1-xMnxTe量子线的电子和磁性能的理论研究
IF 4.4 2区 物理与天体物理
Results in Physics Pub Date : 2025-07-11 DOI: 10.1016/j.rinp.2025.108358
Asad Shendi, Mohammad Elsaid, Diana Dahliah
{"title":"Theoretical study of the electronic and magnetic properties of Cd1-xMnxTe quantum wire under the combined effects of the applied magnetic field, spin orbit coupling and exchange effects","authors":"Asad Shendi,&nbsp;Mohammad Elsaid,&nbsp;Diana Dahliah","doi":"10.1016/j.rinp.2025.108358","DOIUrl":"10.1016/j.rinp.2025.108358","url":null,"abstract":"<div><div>This paper presents a study for the electronic and magnetic properties of Cd<sub>1-x</sub>Mn<sub>x</sub>Te quantum wire (QW). The Hamiltonian for an electron confined in a quantum wire, in the presence of an external magnetic field and Rashba spin orbit interaction, had been solved. The obtained energy dispersion relation had been used to calculate the electronic structure and display the Landau levels and density of states for different physical Hamiltonian s parameters. The density of states function shows a significant dependence on spin, Rashba, exchange effect and magnetic field. The dependence of the magnetic properties like magnetization and magnetic susceptibility on the magnetic field strength, quantum wire radius, and exchange and Rashba strength parameters have been examined. The computed results show that the material can display a phase transition between Paramagnetic and Diamagnetic types. In addition, an oscillatory behavior in the magnetic susceptibility as a function of magnetic field has been observed. This oscillating behavior is a result of Landau levels crossing in the quantum wire energy spectra.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"75 ","pages":"Article 108358"},"PeriodicalIF":4.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Machine learning-based prediction of proton-induced reaction cross-sections for medically relevant bromine radioisotopes 基于机器学习的医学相关溴放射性同位素质子诱导反应截面预测
IF 4.4 2区 物理与天体物理
Results in Physics Pub Date : 2025-07-10 DOI: 10.1016/j.rinp.2025.108357
Parichehr Khalilzadeh , S. Farhad Masoudi , Hassan Yousefnia , Fatemeh S. Rasouli
{"title":"Machine learning-based prediction of proton-induced reaction cross-sections for medically relevant bromine radioisotopes","authors":"Parichehr Khalilzadeh ,&nbsp;S. Farhad Masoudi ,&nbsp;Hassan Yousefnia ,&nbsp;Fatemeh S. Rasouli","doi":"10.1016/j.rinp.2025.108357","DOIUrl":"10.1016/j.rinp.2025.108357","url":null,"abstract":"<div><div>Accurate prediction of nuclear reaction cross-sections is essential for optimizing the production of medically relevant radioisotopes. In this study, we investigate proton-induced reactions on selenium isotopes leading to the formation of bromine radioisotopes (<sup>75</sup>Br, <sup>76</sup>Br, <sup>77</sup>Br, and <sup>80m</sup>Br) using machine learning (ML) techniques. A total of 499 experimental data points were extracted from the EXFOR database and processed using Savitzky–Golay filtering and cubic spline interpolation to reduce noise and augment the dataset. Feature engineering incorporated both categorical and physics-informed variables to enhance model learning. Three ML models—Random Forest (RF), LightGBM, and Gaussian Process Regression (GPR)—were trained and evaluated using RMSE, R<sup>2</sup>, and 10-fold cross-validation. The results show that RF consistently outperformed other models, achieving an RMSE of 16.73 mb and R<sup>2</sup> of 0.99 post-preprocessing. LightGBM also performed robustly, while GPR showed limited stability in sparse or nonlinear regions. Model performance was further analyzed by reaction type and radioisotope. The study highlights the effectiveness of ML and preprocessing in cross-section prediction under data-scarce conditions and suggests future directions including deep learning and hybrid ensemble models.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"75 ","pages":"Article 108357"},"PeriodicalIF":4.4,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144634074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Effect of Ni doping on the properties of Ca(OH)2 nanoparticles and its application in toxic methylene blue dye removal Ni掺杂对Ca(OH)2纳米粒子性能的影响及其在有毒亚甲基蓝染料脱除中的应用
IF 4.4 2区 物理与天体物理
Results in Physics Pub Date : 2025-07-09 DOI: 10.1016/j.rinp.2025.108355
Akash , Pushpendra Kumar , Vipin Kumar , Ashok Kumar Sharma , Anoop Kumar Mukhopadhyay
{"title":"Effect of Ni doping on the properties of Ca(OH)2 nanoparticles and its application in toxic methylene blue dye removal","authors":"Akash ,&nbsp;Pushpendra Kumar ,&nbsp;Vipin Kumar ,&nbsp;Ashok Kumar Sharma ,&nbsp;Anoop Kumar Mukhopadhyay","doi":"10.1016/j.rinp.2025.108355","DOIUrl":"10.1016/j.rinp.2025.108355","url":null,"abstract":"<div><div>This work reports the successful synthesis of calcium hydroxide nanoparticles (CHNPs) and doped it with various concentrations (3–12 atom%) of Ni, using a simple co-precipitation method. The CHNPs and nickel-doped calcium hydroxide nanoparticles (Ni-CHNPs) samples were examined for their structural, elemental, functional group, surface morphology, thermal, and optical analysis using various characterization techniques. Structural analysis confirmed that Ni ions were effectively incorporated into the Ca(OH)<sub>2</sub> lattice without disrupting its crystalline integrity. The Ni doping in CHNPs is further confirmed by XPS and EDX spectra. The crystallite size and optical band gap of Ni-CHNPs were found to vary with a change in the doping concentration of Ni. Further, the effect of Ni doping was observed in surface morphology and thermogravimetric data. The changes in the properties of Ni-CHNPs with varying concentrations of Ni were discussed in terms of the interaction between Ni and CHNPs. The synthesized material was then used to study the adsorption capacity (q<sub>e</sub>) and percentage removal (%R) of dyes from wastewater. Furthermore, the effect of temperature on the adsorption characteristics of methylene blue (MB) dye by the Ni-CHNPs is marked by a consistent increase in (%R) and (q<sub>e</sub>) as the temperature rises from 25 °C to 45 °C. Among these, the sample with 9 at.% Ni showed the highest adsorption efficiency at 45 °C, achieving ∼ 90 % dye removal. The adsorption kinetics of dye were analyzed using several kinetics models, out of which the adsorption of MB was best described by the pseudo-second order (PSO) model. These results provide valuable insights into the properties of Ni-CHNPs and their potential applications in dye removal for further development in environmental remediation technologies.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"75 ","pages":"Article 108355"},"PeriodicalIF":4.4,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Parametric instability analysis of multi-segment conical shells under periodic spin speed 周期转速作用下多段锥形壳的参数失稳分析
IF 4.4 2区 物理与天体物理
Results in Physics Pub Date : 2025-07-09 DOI: 10.1016/j.rinp.2025.108354
Chun Hao Zhang
{"title":"Parametric instability analysis of multi-segment conical shells under periodic spin speed","authors":"Chun Hao Zhang","doi":"10.1016/j.rinp.2025.108354","DOIUrl":"10.1016/j.rinp.2025.108354","url":null,"abstract":"<div><div>This study is the first to investigate the parametric instability of multi-segment conical shells (MSCSs) under periodic spin speed. The artificial spring simulates the general boundary constraints and the constraints between shell segments. Based on Donnell’s shell theory and the Lagrange equation, the dynamic equations for MSCSs under periodic spin speed are formulated. Parametric instability analysis is conducted based on Floquet theory. The effects of circumferential wave number, boundary conditions, spin speed, and cone angle on the stability of single-segment conical shells under periodic spin speed are examined. As the spin speed increases, the instability region shifts towards higher frequencies, and its area substantially increases. Additionally, the effects of cone angle and geometric configurations on the stability of MSCSs are investigated. The results indicate that for variable cone-angle MSCSs, reducing the cone angle of the second segment can improve stability. For stepped MSCSs, a configuration with thickened ends effectively reduces the instability region area and improves structural stability. For MSCSs with thickened both ends, the step position has a minimal effect on the area and starting point of the instability region, and the differences in instability region areas among various step thickness ratios are also negligible.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"75 ","pages":"Article 108354"},"PeriodicalIF":4.4,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144634073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Structural, physical, optical, mechanical, and radiation shielding investigation of tantalum pentoxide doped Germanate-Tellurite-Borate based glass system 五氧化二钽掺杂锗碲硼酸盐基玻璃体系的结构、物理、光学、机械和辐射屏蔽研究
IF 4.4 2区 物理与天体物理
Results in Physics Pub Date : 2025-07-08 DOI: 10.1016/j.rinp.2025.108356
M.I. Sayyed , M.H.A. Mhareb , M.Kh. Hamad , Abed Jawad Kadhim , Kawa M. Kaky , Yasser Maghrbi
{"title":"Structural, physical, optical, mechanical, and radiation shielding investigation of tantalum pentoxide doped Germanate-Tellurite-Borate based glass system","authors":"M.I. Sayyed ,&nbsp;M.H.A. Mhareb ,&nbsp;M.Kh. Hamad ,&nbsp;Abed Jawad Kadhim ,&nbsp;Kawa M. Kaky ,&nbsp;Yasser Maghrbi","doi":"10.1016/j.rinp.2025.108356","DOIUrl":"10.1016/j.rinp.2025.108356","url":null,"abstract":"<div><div>A set of glass samples has been fabricated of tantalum, borate, germanate, tellurate, magnesium with glass formula of 20TeO<sub>2</sub>-35MgO-(35-x)B<sub>2</sub>O<sub>3</sub>-10GeO<sub>2</sub>-xTa<sub>2</sub>O<sub>5</sub> where x refers to the concentration of Ta<sub>2</sub>O<sub>5</sub> with values (0.5, 1.0, 1.5, 2.0, and 2.5) all in mol%. The melt followed by annealing process was utilized to produce these glasses. The amorphous nature of the glass systems was explored via XRD with a specific setup ranging from 10 to 80 degrees. Optical absorption with wavelengths shifted from low (358 nm) to high (382 nm) wavelength due to the addition of Ta<sub>2</sub>O<sub>5</sub>. Optical band gap (E<sub>g</sub>) values are 3.720, 3.533, 3.480, 3.440, and 3.407 eV for Ta0.5, Ta1.5, Ta2.0, and Ta2.5. Several optical parameters were calculated in this work, such as optical basicity (Λ), metallization, transmission (T), reflection loss (R), electron polarizability (α<sub>o</sub>), and optical electronegativity (χ). Using density, dissociation energy (G<sub>t</sub>), and packing density (V<sub>t</sub>), the mechanical features were estimated based on the Makishima and Mackenzie model. Based on V<sub>t</sub> and G<sub>t</sub> values, several parameters were determined, such as fractal bond conductivity (d), longitudinal modulus (L), Young’s modulus (Y), oxygen packing density (OPD), microhardness (H), oxygen molar volume (OMV), shear modulus (S), bulk modulus (B), and Poisson ratio (σ). The ionizing radiation shielding properties of the prepared samples were systematically studied. The results confirmed that increasing Ta<sub>2</sub>O<sub>5</sub> content enhances different radiation shielding parameters. At 0.05 MeV, the linear attenuation coefficient (LAC) is approximately 100 cm<sup>−1</sup> for the Ta0.5 sample, while it is higher for the Ta2.5 sample, reaching around 105 cm<sup>−1</sup>. In addition, the kinetic energy released per unit mass (KERMA) value for the Ta0.5 sample near the K-edge is about 0.85 relative to air, increasing to approximately 0.89 for the Ta2.5 sample, indicating a 4.7 % enhancement. Moreover, the half-value layer (HVL) at 0.05 MeV is reduced from about 0.15 cm for the Ta0.5 sample to 0.14 cm for the Ta2.5 sample. This result demonstrates superior shielding performance compared to various traditional shielding materials. The high-density nature of these glasses makes them promising candidates for radiation protection applications.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"75 ","pages":"Article 108356"},"PeriodicalIF":4.4,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Remarkable GHz electromagnetic wave absorption mediated by synergistic interplay of magnetic/dielectric loss and impedance matching 磁/介电损耗和阻抗匹配协同作用介导的显著GHz电磁波吸收
IF 4.4 2区 物理与天体物理
Results in Physics Pub Date : 2025-07-07 DOI: 10.1016/j.rinp.2025.108352
Mangui Han
{"title":"Remarkable GHz electromagnetic wave absorption mediated by synergistic interplay of magnetic/dielectric loss and impedance matching","authors":"Mangui Han","doi":"10.1016/j.rinp.2025.108352","DOIUrl":"10.1016/j.rinp.2025.108352","url":null,"abstract":"<div><div>The fabrication of partially crystallized Fe-Cu-Nb-Si-B nanocrystalline flakes with pronounced shape anisotropy has been reported. The size distributions of both the average grain size and flake particles were found to conform to lognormal distributions. Inhomogeneous nanostructures and microstructures were revealed, which significantly impact the broadening of permeability spectra and the local coercivity values. The microwave magnetic losses were observed to be more pronounced than the microwave dielectric losses. The outstanding GHz − band electromagnetic wave absorption performance can be adequately explained by considering impedance matching, which is attributed to their unique two − phase ferromagnetic nanostructures. The first − order reversal curves (FORC) technique was utilized to uncover the inhomogeneous nanostructures and to clarify the origins of microwave magnetic losses.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"75 ","pages":"Article 108352"},"PeriodicalIF":4.4,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
A macroscopic traffic flow model considering driver memory effect on curves 考虑驾驶员记忆效应的弯道宏观交通流模型
IF 4.4 2区 物理与天体物理
Results in Physics Pub Date : 2025-07-05 DOI: 10.1016/j.rinp.2025.108353
Yang Chunfeng , Yang Chenxiao , Zhang Yu , Qi Linyuan , Shi Longyu , Tan Lixiang , Tang Qiang
{"title":"A macroscopic traffic flow model considering driver memory effect on curves","authors":"Yang Chunfeng ,&nbsp;Yang Chenxiao ,&nbsp;Zhang Yu ,&nbsp;Qi Linyuan ,&nbsp;Shi Longyu ,&nbsp;Tan Lixiang ,&nbsp;Tang Qiang","doi":"10.1016/j.rinp.2025.108353","DOIUrl":"10.1016/j.rinp.2025.108353","url":null,"abstract":"<div><div>In real-world driving environments, curved roads are a common scenario that drivers must consider. Driver behavior is also a key factor in the study of traffic systems. This study investigates how factors such as curvature radius and friction coefficient affect the stability of a memory-dependent vehicle-following model under curved road conditions. First, stability criteria for the model are derived using control theory. Subsequently, equilibrium solutions are obtained through bifurcation analysis from a nonlinear perspective. Numerical simulations demonstrate that the model effectively captures system dynamics on curved roads. The incorporation of driver memory effects adversely impacts system stability, and similar destabilizing trends emerge with increasing curvature radius and friction coefficient. Furthermore, numerical solutions exhibit strong consistency with analytical results.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"75 ","pages":"Article 108353"},"PeriodicalIF":4.4,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144571592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
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