The European Physical Journal Plus最新文献_第7页

Anisotropy of micro-evolution and spall behavior of free-cutting steel containing bismuth under shock loading 冲击载荷下含铋易切削钢微观演变和剥落行为的各向异性

IF 2.8 3区物理与天体物理

The European Physical Journal Plus Pub Date : 2025-02-13 DOI: 10.1140/epjp/s13360-025-06020-w

Yuan Fan, Fazhan Wang, Menghui Liu, Guangyuan Li, Zhanwen Chen, Pan Li, Kai Jiang, Hong Wu

{"title":"Anisotropy of micro-evolution and spall behavior of free-cutting steel containing bismuth under shock loading","authors":"Yuan Fan, Fazhan Wang, Menghui Liu, Guangyuan Li, Zhanwen Chen, Pan Li, Kai Jiang, Hong Wu","doi":"10.1140/epjp/s13360-025-06020-w","DOIUrl":"10.1140/epjp/s13360-025-06020-w","url":null,"abstract":"<div><p>Based on non-equilibrium molecular dynamics (NEMD) simulation, the effect of Bi in free-cutting steel containing bismuth on the overall mechanical properties of steel under high pressure was studied by piston shock method. Considering the complexity of real crystals, four different crystal orientations were selected. The results show that the peak impact stress in the Bi-containing model is the same as that in the perfect single-crystal Fe, but its strength is significantly lower than that of the perfect single crystal. Under shockwave loading, the (001) orientation exhibits a single-wave structure, while the (110), (111), and (112) orientations exhibit multi-wave structures. Analysis shows that elastic waves are reflected at the surface of the Bi particles, and the resulting shear stress activates the {112} <111> slip system around the Bi particles, leading to premature phase changes. During the fracture failure phase, the strength of the (001) crystal orientation is the highest. Regardless of the crystal orientation, cavities and defects always preferentially form inside the Bi particles. This study provides important insights for exploring the performance of Bi-containing free-cutting steel under extreme conditions and has significant implications for related production practices.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 2","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

WO3/Ti3C2@GQD composites: advanced materials for superior energy storage and hydrogen evolution performance WO3/Ti3C2@GQD 复合材料：具有卓越储能和氢气进化性能的先进材料

IF 2.8 3区物理与天体物理

The European Physical Journal Plus Pub Date : 2025-02-12 DOI: 10.1140/epjp/s13360-025-06052-2

Muhammad Ashraf, Ehtisham Umar, Muhammad Arslan Sunny, M. Waqas Iqbal, Badriah S. Almutairi, N. A. Ismayilova, Junaid Ahmad Khan

{"title":"WO3/Ti3C2@GQD composites: advanced materials for superior energy storage and hydrogen evolution performance","authors":"Muhammad Ashraf, Ehtisham Umar, Muhammad Arslan Sunny, M. Waqas Iqbal, Badriah S. Almutairi, N. A. Ismayilova, Junaid Ahmad Khan","doi":"10.1140/epjp/s13360-025-06052-2","DOIUrl":"10.1140/epjp/s13360-025-06052-2","url":null,"abstract":"<div><p>MXene-related materials possess promising characteristics as electrical electrodes used for energy storage and conversion purposes, recognition for their diverse attributes, such as a substantial surface area, excellent metallic conductivity, and rapid redox process. However, the excessive combination and oxidation of surfaces have greatly restricted their application in many types of businesses. This work proved the production of WO<sub>3</sub> nanosphere-interrelated MXene/GQDs (WO<sub>3</sub>/MXene@GQDs) nanocomposite by facial hydrothermal method. Electrochemical supercapacitors and water-splitting activities were implemented using these nanocomposites. The WO<sub>3</sub>/MXene@GQDs nanocomposite electrodes exhibited a superb specific capacity of 2851 C/g through 2.0 A/g. Moreover, the asymmetric devices based on nanocomposites achieved a notable specific energy of 81.3 Wh/kg and a power density (<i>P</i><sub>d</sub>) of 1750 W/kg, showcasing important cycling stability. The WO<sub>3</sub>/MXene@GQDs nanocomposite electrocatalyst demonstrated a low overpotential of 131.41 mV and a small Tafel slope value of 57.67 mV dec<sup>−1</sup> for the HER. The fabrication hybrid electrodes retained 80.79% of their capacity and maintained 89.34% coulombic efficiency after 12,000 cycles. This research employs experimental studies to explore the application of WO<sub>3</sub>/MXene@GQD-based electrodes for the HER. The challenges associated with WO<sub>3</sub>/Ti<sub>3</sub>C<sub>2</sub>@GQD electrodes and their potential are also addressed. Our findings show future advancements in different and efficient electrocatalysts based on MXenes for hydrogen production via water-splitting technology.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 2","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143388760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Exploring nonlinear optical properties of single δ-doped quantum wells: influences of position-dependent mass, temperature, and hydrostatic pressure

IF 2.8 3区物理与天体物理

The European Physical Journal Plus Pub Date : 2025-02-12 DOI: 10.1140/epjp/s13360-025-06068-8

M. Sayrac, L. Acıkgoz, A. T. Tuzemen, M. E. Mora-Ramos, F. Ungan

{"title":"Exploring nonlinear optical properties of single δ-doped quantum wells: influences of position-dependent mass, temperature, and hydrostatic pressure","authors":"M. Sayrac, L. Acıkgoz, A. T. Tuzemen, M. E. Mora-Ramos, F. Ungan","doi":"10.1140/epjp/s13360-025-06068-8","DOIUrl":"10.1140/epjp/s13360-025-06068-8","url":null,"abstract":"<div><p>This study investigates the multifaceted impact of position-dependent effective mass, temperature, and hydrostatic pressure on the electronic and optical properties of single-doped quantum wells, with a particular emphasis on varying doping levels. Utilizing effective mass and parabolic band approximations, calculations were meticulously conducted via the diagonalization method, employing a trigonometric orthonormal function basis to elucidate the eigenvalues and eigenfunctions of the confined electron potential. The obtained results unveil substantial alterations in electron energies, state transitions, and absorption spectra consequent to fluctuations in doping levels, temperature, and pressure. These findings provide profound insights into the intricate interplay between semiconductor characteristics and external stimuli, laying a foundation for the optimization of laser and optoelectronic devices through the tailored engineering of material properties. This comprehensive understanding not only advances fundamental knowledge in semiconductor physics but also paves the way for the development of innovative materials with customized optical functionalities, thus driving progress in a wide array of technological applications.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 2","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjp/s13360-025-06068-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced angular sensitivity of surface plasmon resonance sensor based on Si-Ag-MXene structure for cortisol application 基于 Si-Ag-MXene 结构的表面等离子体共振传感器在皮质醇应用中增强了角度灵敏度

IF 2.8 3区物理与天体物理

The European Physical Journal Plus Pub Date : 2025-02-12 DOI: 10.1140/epjp/s13360-025-06057-x

Rajeev Kumar, Vimal Kant Pandey, Shivam Singh, Vigneswaran Dhasarathan

{"title":"Enhanced angular sensitivity of surface plasmon resonance sensor based on Si-Ag-MXene structure for cortisol application","authors":"Rajeev Kumar, Vimal Kant Pandey, Shivam Singh, Vigneswaran Dhasarathan","doi":"10.1140/epjp/s13360-025-06057-x","DOIUrl":"10.1140/epjp/s13360-025-06057-x","url":null,"abstract":"<div><p>In this study, a surface plasmon resonance (SPR) based sensor is designed and modelled analytically to achieve the maximum sensitivity with improved selectivity. To achieve this, an Ag layer is sandwiched between Si and MXene layers. The Si layer is placed between CaF<sub>2</sub> prism and Ag layer. Because of its higher charge carrier transfer efficiency to the metal interface and superior charge carrier confinement, the Si layer in SPR sensor has significantly improved sensor’s performance. The Si and Ag layer thickness have been characterized to achieve optimized sensing parameters. The analysed designs ensure the maximum sensitivity of 437.5°/RIU and figure of merit (FoM) of 37.99/RIU. The estimation of the electric field distribution is also utilized to analyse the enhancement of the field at the interfaces between multiple layers of the material. A penetration depth (PD) of 273.52 nm, which represents the separation between positions from the maximum electric field intensity to 37% strength, has been attained. As a result, the proposed sensor can also detect the cortisol concentration, achieving the sensitivity and limit of detection (LoD) of 441.91°/RIU and 2.26 × 10<sup>–6</sup> RIU, respectively. The proposed sensor demonstrates the potential for detecting concentration-based cortisol.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 2","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Spiky structure in velocity distribution for a ball bouncing on a vertically vibrating plate 球在垂直振动板上弹跳时的速度分布中的尖刺结构

IF 2.8 3区物理与天体物理

The European Physical Journal Plus Pub Date : 2025-02-12 DOI: 10.1140/epjp/s13360-025-05998-7

D. W. Zhou, J. J. Ren, Z. H. Jiang

引用次数: 0

Control and sorting of inhomogeneous dielectric core–shell nanoparticles using two counter-propagating plane waves 利用两个反传播平面波控制和分选非均质介质核壳纳米粒子

IF 2.8 3区物理与天体物理

The European Physical Journal Plus Pub Date : 2025-02-12 DOI: 10.1140/epjp/s13360-025-06053-1

Ricardo Martín Abraham-Ekeroth, Marcelo Lester, Dani Torrent

{"title":"Control and sorting of inhomogeneous dielectric core–shell nanoparticles using two counter-propagating plane waves","authors":"Ricardo Martín Abraham-Ekeroth, Marcelo Lester, Dani Torrent","doi":"10.1140/epjp/s13360-025-06053-1","DOIUrl":"10.1140/epjp/s13360-025-06053-1","url":null,"abstract":"<div><p>Many typical nanoscale structures consist of dielectric nanoparticles with an inevitable oxide-generated coating around them. Depending on the fabrication techniques and the intended purposes, these coatings may not be homogeneous, and their distortion can cause advantages or disadvantages in the applications of such systems. Based on finite element simulations, inhomogeneous core–shell nanoparticle systems are numerically studied when illuminated with two counter-propagating plane waves in the optical range. It is found that the electromagnetic field distortions caused by the inhomogeneous system under Mie resonance conditions allow the system to exhibit controllable one-directional impulsion and rotation, which mainly depends on the offset between the core and shell. The overall geometry and composition of the system also dictate the type of resonance being excited. Overall, this “photonic thruster” effect consisting of an accelerating and spinning projectile would provide stability to particle movement and additionally establish a method to distinguish inhomogeneous from homogeneous particles. The method can be scaled to a wide range of nanoscale dielectric particles. Thus, the results are useful for detecting defects in nanosystems with a simple concept and may open avenues for improving nanoparticle synthesis methods.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 2","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjp/s13360-025-06053-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bose–Einstein condensation of five (alpha ) clusters in (^{20})Ne and supersolidity

IF 2.8 3区物理与天体物理

The European Physical Journal Plus Pub Date : 2025-02-11 DOI: 10.1140/epjp/s13360-025-06049-x

S. Ohkubo, J. Takahashi, Y. Yamanaka

引用次数: 0

Quantum metrology in a driven-dissipation down-conversion system beyond the parametric approximation

IF 2.8 3区物理与天体物理

The European Physical Journal Plus Pub Date : 2025-02-11 DOI: 10.1140/epjp/s13360-025-06059-9

Dong Xie, Chunling Xu

{"title":"Quantum metrology in a driven-dissipation down-conversion system beyond the parametric approximation","authors":"Dong Xie, Chunling Xu","doi":"10.1140/epjp/s13360-025-06059-9","DOIUrl":"10.1140/epjp/s13360-025-06059-9","url":null,"abstract":"<div><p>We investigate quantum metrology in a degenerate down-conversion system composed of a pump mode and two degenerate signal modes. In the conventional parametric approximation, the pump mode is assumed to be constant, not a quantum operator. We obtain the measurement precision of the coupling strength beyond the parametric approximation. Without a dissipation, the super-Heisenberg limit can be obtained when the initial state is the direct product of classical state and quantum state. When the pump mode suffers from a single-photon dissipation, the measurement uncertainty of the coupling strength is close to 0 as the coupling strength approaches 0 with a coherent driving. The direct photon detection is proved to be the optimal measurement. This result has not been changed when the signal modes suffer from the two-photon dissipation. When the signal modes also suffer from the single-mode dissipation, the information of the coupling strength can still be obtained in the steady state. In addition, the measurement uncertainty of the coupling strength can also be close to 0 and become independent of noise temperature as a critical point approaches. Finally, we show that a driven-dissipation down-conversion system can be used as a precise quantum sensor to measure the driving strength.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 2","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143388725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Fast-slow analysis of van der Pol-Duffing oscillator coupled nonlinear energy sink at different scales

IF 2.8 3区物理与天体物理

The European Physical Journal Plus Pub Date : 2025-02-10 DOI: 10.1140/epjp/s13360-025-05974-1

Yanli Wang, Xianghong Li, Yongjun Shen

{"title":"Fast-slow analysis of van der Pol-Duffing oscillator coupled nonlinear energy sink at different scales","authors":"Yanli Wang, Xianghong Li, Yongjun Shen","doi":"10.1140/epjp/s13360-025-05974-1","DOIUrl":"10.1140/epjp/s13360-025-05974-1","url":null,"abstract":"<div><p>The van der Pol-Duffing oscillator is widely used in various linear motion mechanisms due to the nonlinear effects of spring force and friction, and is accompanied by self-excited oscillation. Continuous self-excited oscillation can cause serious damage to equipment and production life, so it is extremely necessary to suppress its self-excited oscillation. This article focuses on the vibration control problem of van der Pol-Duffing oscillators at different scales, and innovatively uses a coupled nonlinear energy sink (NES) to suppress unexpected oscillations of external excitation and self-excited systems to reduce oscillation amplitude. Apply the complex variable averaging method to approximate the analytical solution of the coupled system and compare it with the numerical solution of the fourth-order Runge Kutta method. In the primary resonance region, different scale coupling characteristics are exhibited based on the difference in structural mass scale. Using the fast-slow analysis method, the slow invariant manifold is explored to determine the excitation amplitude range that causes the strongly modulated response, and it is found that the vibration reduction effect is optimal at this time. In the non-primary resonance region, there are also coupling phenomena of different scales based on frequency level differences. The fast-slow analysis method is used to evaluate the vibration reduction effect of the coupled NES system and explain the vibration reduction mechanism, clarifying that the change in the balance point type of the autonomous system is the key factor in the vibration reduction of the non-autonomous system.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 2","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143379862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Nonlinear dynamics and experimental analysis at low frequency of a novel liquid-filled isolator

IF 2.8 3区物理与天体物理

The European Physical Journal Plus Pub Date : 2025-02-10 DOI: 10.1140/epjp/s13360-024-05952-z

Lin Chen, Xin Liao, Feng Liu, Xin Pei

{"title":"Nonlinear dynamics and experimental analysis at low frequency of a novel liquid-filled isolator","authors":"Lin Chen, Xin Liao, Feng Liu, Xin Pei","doi":"10.1140/epjp/s13360-024-05952-z","DOIUrl":"10.1140/epjp/s13360-024-05952-z","url":null,"abstract":"<div><p>To resolve the tough issue of strong vibration of the secondary suspension system of the heavy construction machinery cab, a novel liquid-filled isolator is designed. Considering the flow-solid coupling effect between liquid and rubber element, a new parallel combination model with nonlinear coupling relationship is proposed, and the influences of different structural parameters on the amplitude-frequency characteristics and the absolute displacement transmissibility of the suspension system are studied respectively. The low frequency dynamic characteristics of the liquid-filled isolator are investigated and analyzed experimentally. The results show that the transmissibility curves for the measured system keep good agreement with the analytical solutions of the nonlinear dynamics equation, which verifies the validity of the mathematical model. Moreover, the results in the random test show that the novel liquid-filled isolator has obvious vibration isolation effect in both low and high frequency bands, especially the amplitude’s decay rate at high frequency also reaches nearly 90%. This study provides meaningful reference value for the optimized design of the future novel liquid-filled isolator.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 2","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143373318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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