bluuebunny/crossref_metadata_2025_split huggingface dataset:
An ultra-narrow multi-band perfect absorber based on single dielectric nano-cylinder array with surface lattice resonance
Authors: Wang Qihao , Ju Xiongwu , Yang Can , Zhang Yun , Hu Jinyong 
Published: February 2025

Abstract
Dielectric nanomaterials have attracted significant attention in the realm of micro- nano optics owing to the simultaneous low ohmic loss and distinctive electromagnetic resonance characteristic. However, achieving both ultra-narrow multi-band band and perfect absorption effects simultaneously has been challenging due to the weak magnetic response within traditional dielectric metamaterials. In this work, employing the finite-time domain differential method for simulation calculations, a multi-band perfect absorber consisting of titanium dioxide cylinder arrays is theoretically proposed. Benefiting from the concurrent presence of electromagnetic lattice resonance within the arrays of titanium dioxide cylinders, the as-proposed optical absorber demonstrates the simultaneous achievement of triple absorption bands, with extremely narrow spectral characteristics (minimum bandwidth approximately 0.8 nm) and near-perfect absorption rates (around 95.6%, 96.8%, and 95%) in 700–900 nm. Further near-field analysis unveils that surface lattice resonance arises from the synergistic interaction between the incident light and periodic structures, enhancing the coupling efficiency between the light and the surface plasmon, which can significantly amplify the electromagnetic field. By adjusting the lattice constant and geometric parameters, the physical mechanisms of the structure are further elucidated, and the optimal parameters of the absorber are ultimately determined. Moreover, due to its exceptional optical properties, the as-proposed multi-band absorber can be employed as a high-efficiency refractive index sensor with multi-frequency channel sensing. The corresponding sensitivity is calculated to be 356, 443.6 and 305.9 nm/RIU, with corresponding figure of merits of 482, 460.4 and 19.5 RIU−1, respectively. This research establishes a robust foundation for advancing multi-band perfect optical absorber, offering significant potential applications in multiple fields such as biochemical sensing, surface enhancement spectroscopy, and nonlinear nano-optics.
Ageing and quenching: influence of galaxy environment and nuclear activity in transition stage
Authors: Privatus Pius , Dev Goswami Umananda 
Published: February 2025

Abstract
This study aims to investigate whether the environment and the nuclear activity of a particular galaxy influence the ageing and quenching at the transition stage of the Galaxy evolution using the volume-limited sample constructed from the twelve release of the Sloan Digital Sky Survey. To this end, the galaxies were classified into isolated and non-isolated environments and then each subsample was further classified according to their nuclear activity using the WHAN diagnostic diagram, and ageing diagram to obtain ageing and quenching galaxies. The ageing and quenching galaxies at the transition stage were selected for the rest of the analysis. Using the star formation rate and the u − r colour-stellar mass diagrams, the study revealed a significant change of 0.03 dex in slope and 0.30 dex in intercept for ageing galaxies and an insignificant change of 0.02 dex in slope and 0.12 dex in intercept of the star formation main sequence between isolated and non-isolated quenching galaxies. Further, a more significant change in the number of ageing galaxies above, within and below the main sequence and the green valley was observed. On the other hand, an insignificant change in the number of quenching galaxies above, within and below the main sequence and the green valley was observed. The study concludes that ageing depends on the environment and the dependence is influenced by the nuclear activity of a particular galaxy while quenching does not depend on the environment and this independence is not influenced by the nuclear activity.
Design and development of a 2.45 GHz slot loaded SIW microwave applicator for soil treatment
Authors: Kumari Kiran , Agarwal Mayank , Singh Hari Shankar , Khanna Rajesh 
Published: February 2025

Abstract
This paper presents the design and application of a planar H-plane horn antenna for agricultural purposes, specifically for the treatment of loamy wet soil using microwave radiation. The antenna is designed using Substrate Integrated Waveguide (SIW) technology resonated at 2.45 GHz, having a size of 1.37λ
0 × 1.04λ
0 × 0.012λ
0. To achieve a unidirectional radiation pattern on an ultrathin substrate of 0.012λ
0, two exponential slots are incorporated on the top and bottom of the substrate. The gain of the antenna is further enhanced using the interdigital capacitance concept. The proposed antenna is tested for its efficacy in soil disinfection by treating loamy wet soil contained in a pot with dimensions of 150 × 150 × 150 mm3. The applicator’s performance is analyzed by performing both steady state and transient analysis on both homogeneous and heterogeneous soil model. In homogeneous soil, 80 °C is reached with 18 W (RMS) in 3384 s, while heterogeneous soil requires 24 W (RMS) and 4644 s. Experimentally, at a low input power of 28 watts (RMS), the maximum soil temperature achieved is 76.6 °C, with the time taken to reach this temperature being 5400 s. The lowest temperature of 70 °C is observed at a depth of 4.5 cm. This temperature range is effective for soil treatment, ensuring the eradication of soil-borne pathogens and pests. The findings demonstrate that the planar H-plane horn antenna is effective in uniformly distributing microwave radiation for soil treatment at lower power levels. This innovative approach offers a promising solution for sustainable soil management and enhanced agricultural productivity, highlighting the potential of advanced antenna designs in agricultural applications.
Noncanonical warm inflation with nonminimal derivative coupling
Authors: Zhang Xiao-Min , Zhao Run-Qing , Peng Zhi-Peng , Li Xi-Bin , Feng Yun-Cai , Chu Peng-Cheng , Xing Yi-Hang 
Published: February 2025

Abstract
This study extended noncanonical warm inflation to the nonminimal derivative coupling scenario. The fundamental equations, including the evolution equations and the slow roll equations of this new framework, were derived. The enlarged damping term, which encompasses both gravitationally enhanced friction and thermal damping, resulted in a well overdamped inflationary process, ensuring that the slow roll approximations can be satisfactorily satisfied. A linear stability analysis corroborated the viability of this approach, yielding significantly relaxed slow roll conditions within the context of noncanonical warm inflation with nonminimal derivative coupling. Subsequently, the density fluctuations in this new framework were analyzed, leading to approximately analytic results for the power spectrum, spectral index, and related quantities. Both the energy scale at horizon crossing and the tensor-to-scalar ratio decreased considerably because of the effects of thermal damping and nonminimal derivative coupling. The upper bound for field excursion remained safely sub-Planckian in this inflationary scenario. Thus we reached a successful and meaningful model to broad the scope of warm inflation.
Plasma Effects on Weak Gravitational Lensing and Shadows of Sen Black Holes
Authors: Umarov Dilmurod , Yunusov Odil , Atamurotov Farruh , Abdujabbarov Ahmadjon , Ghosh Sushant G. 
Published: February 2025

Abstract
We investigate the optical properties of the spacetime surrounding a Sen black hole, focusing on the black hole's shadow, weak gravitational lensing, and time delay effects. Our analysis reveals that the effective charge of the Sen black hole significantly influences these phenomena. Specifically, an increase in the effective charge leads to a reduction in the radius of the photon sphere and a corresponding decrease in the size of the black hole's shadow. Additionally, the bending angle of light rays diminishes as the effective charge increases. Our study provides observational bounds on the effective charge based on these optical characteristics. We also examine the magnification of source brightness using the lens equation and analyze the time delay of light in the presence of a surrounding plasma medium. Our findings offer new insights into the impact of effective charge and plasma on the observational signatures of Sen black holes.
Probing the mass effect of heavy quark jets in high-energy nuclear collisions
Authors: Wang Sa , Li Shuang , Li Yao , Zhang Ben-Wei 张本威 , Wang Enke 
Published: February 2025

Abstract
The production of heavy quark (HQ) jets provides a new arena to address the mass effect of jet quenching in heavy-ion physics. This paper presents a theoretical study of HQ jet yield suppression in Pb+Pb collisions at the LHC and focuses on the energy loss of HQ jets produced by different mechanisms. The p+p baseline is carried out by the SHERPA generator, and the jet-medium interactions are described by the SHELL transport model, which considers the elastic and inelastic partonic energy loss in the quark-gluon plasma (QGP). In p+p collisions, our numerical results indicate that the HQ jets from gluon splitting ($g \rightarrow Q$-jet) give the dominant contribution at high $p_T$, and it shows more dispersive structures than the HQ-initiated one ($Q \rightarrow Q$-jet). In nucleus-nucleus collisions, our calculations are consistent the inclusive and b-jet $R_{AA}$ recently measured by the ATLAS collaboration, which suggests a remarkable manifestation of the mass effect of jet energy loss. As a result of the dispersive substructure, the $g \rightarrow Q$-jet will lose more energy than the $Q \rightarrow Q$-jet in the QGP. Due to the significant contribution of $g \rightarrow c$-jet, the $R_{AA}$ of c-jet will be comparable or even smaller than that of inclusive jet. To experimentally distinguish the $g \rightarrow Q$-jet and $Q \rightarrow Q$-jet, we propose the event selection strategies based on their topological features and test the performances. By isolating the $c \rightarrow c$-jet and $b \rightarrow b$-jet, the jets initiated by heavy quarks, we predict that the order of their $R_{AA}$ are in line with the mass hierarchy of energy loss. Future measurements on the $R_{AA}$ of $Q \rightarrow Q$-jet and $g \rightarrow Q$-jet will provide a unique chance to test the flavour/mass dependence of energy loss at the jet level. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd
Improved Microstructures and Performance of Public Filler Aggregate and Recycled Mortar with Additional Tannic Acid
Authors: Cheng Chen , Chiang Kingsley , Wang Xinxin , Zhang Wenjie , Zhu Yazhi , Luo Hui 
Published: February 2025

Abstract
The enhancement method of modifying public filler (PF) with tannic acid (TA) for the preparation of modified fully recycled aggregate mortar (FRAM) was introduced in this research, aiming to improve its strength and durability and further enhance its application in construction. The improvement effect of TA on the microstructure and physical properties of public fine aggregate (PFA) at different concentrations and immersion times was analyzed. Besides, the physical properties and durability of FRAM were investigated and the strengthening mechanism of TA on FRAM was analyzed by micro-technical methods. The results revealed that the loose cement mortar on the surface of PFA could be removed after TA modification. TA could react with calcium hydroxide and calcite to generate nanoparticles in situ which promote cement hydration to improve the mechanical strength and durability of FRAM. Compared with the unmodified PFA, the compressive strength was increased by 24.62% at 28 d, and the capillary water absorption and electrical flux were reduced by 54.12% and 16.56%, respectively. Microscopic analysis further indicated that TA could improve the interfacial bonding effect of PFA, and enhance the cohesion of the hardened cementitious material, as well as that TA adsorbed on the surface of PFA could be dispersed to the freshly mixed cement mortar to improve the internal structure. The above results indicated that TA can significantly improve the performance of PFA, which has a positive effect on improving the mechanical strength and durability of FRAM and is conducive to saving natural aggregates (NA) and recycling construction resources.
Structural Diagnostic Study of Electrode Materials for Power and Energy Storage Lithium-Ion Batteries
Authors: Li Lu , Liang Jianquan , Dai Changsong , Wang Lei , Zhang Jian , Zhang Hang , Zhang Kexin , Wang Yue , Li Zhongyuan 
Published: February 2025

Abstract
As technology advances, the demand for electric vehicles and energy storage continues to expand, and the production of lithium-ion batteries has grown rapidly in recent years. When the battery enters the end-of-life stage, the recycling of its rare metals such as lithium, cobalt, nickel, and manganese can also alleviate the crisis of rare mineral resources and create huge economic value. The current recycling process for used batteries is based on destructive methods, which are costly and harmful to the environment. Therefore, in recent years, research has focused more on the short-range recovery of active substances in an attempt to repair the compositional and structural defects of the substance particles. This paper carries out research on lithium iron phosphate and ternary cathode materials for lithium-ion batteries with different cycle lifetimes, establishes the correspondence law between the cycle life of the battery and lithium loss, and explores the influence of lithium loss on the structure of the material, the electronic and ionic conductivity, and the structural stability of the law. The results show that the increase in the number of cycles of lithium loss aggravated, which in turn led to the deterioration of the structural stability of the material, which is the main reason for the decay of the crystal structure and performance of lithium iron phosphate and ternary materials decay, to realize the short-range and effective recycling and reuse of electrode materials to provide technical support.
Research on the Pavement Performance of Rubber Powder /Anti-Rutting Agent Composite Modified Asphalt Mixture
Authors: Liu Xue , Jiang Shaowei , Zhang Shoukun 
Published: February 2025

Abstract
Rutting is a prevalent issue in road engineering that adversely impacts driving safety and comfort. To improve the rutting resistance of pavement, this study formulated two groups of modified asphalt mixtures by incorporating varying amounts of rubber powder and anti-rutting agents as environmentally friendly modifiers. The performance of these mixtures was assessed using Rutting tests, Marshall stability tests, and low-temperature Three-point bending beam tests. The findings demonstrate that the two composite modified asphalt mixtures, 11% rubber powder + 0.25% anti-rutting agent (MA-A) and 15% rubber powder + 0.3% anti-rutting agent (MA-B), exhibited outstanding performance in terms of high and low-temperature resistance as well as water damage resistance. Notably, MA-B delivered superior overall performance. Compared to SBS-modified and base asphalt mixtures, the composite mixtures with anti-rutting agents significantly enhanced high-temperature resistance, surpassing that of SBS-modified asphalt. Although the low-temperature performance was markedly better than that of the base asphalt mixture, it was slightly inferior to that of SBS-modified asphalt. The water damage resistance of the composite modified mixtures was comparable to that of SBS-modified asphalt. In summary, the multi-phase composite modified asphalt mixtures significantly improved high-temperature, low-temperature, and water stability in comparison to both base and SBS-modified asphalt.
Research on the Performance of PTFE Gasket Materials under High-Temperature and High-Pressure Environments
Authors: Bao Mingyu , He Yan , Liu Chang , Ma Qian , Zhang Xiaoyan , Wang Shuliang 
Published: February 2025

Abstract
To study the performance changes of polytetrafluoroethylene (PTFE) under high temperature and high-pressure environment, PTFE gasket material was selected to soak in the high-temperature and high-pressure reactor (6 MPa) at different temperatures (60, 90°C) for different times (4, 8, 12, 16 days) for aging failure test. The microstructure, hardness, functional group, and phase structure of the material were measured and analyzed by scanning electron microscope, hardness meter, infrared spectrometer, and X-ray diffractometer respectively. The results showed that with the extension of soaking time, defects and cracks appeared on the surface, and the mechanical properties of the PTFE gasket material were weakened. After soaking at 6 MPa and 90°C for 16 days, no reaction occurred in the PTFE gasket material, but the spiral twisted chain structure of the molecule was destroyed, which affected the performance of the material. Therefore, PTFE is suitable for long-term use in environments below 6 MPa and 60°C, but not suitable for long-term use in environments above 6 MPa and 90°C.
Research on the Improvement and Application of State Estimation Algorithm for Lithium Iron Phosphate Batteries in Low-Temperature Environments
Authors: Wang Qiwen , Sheng Qiang , Liu Wei 
Published: February 2025

Abstract
Accurately predicting the state of charge (SOC) and state of health (SOH) of lithium iron phosphate batteries is crucial for the safe operation of electric vehicle battery systems. However, the Unscented Kalman Filter (UKF) algorithm, commonly used for battery state estimation, exhibits significant errors under low-temperature conditions due to changes in ion mobility and increased internal resistance. To address this, a UKF algorithm incorporating a temperature compensation model is proposed. First, a SOC-OCV functional relationship is established through analysis of experimental data, achieving a high fitting degree of 0.999. Then, a temperature compensation model is integrated to refine the UKF estimation by accounting for the increased electrolyte viscosity and reduced reaction kinetics at low temperatures. Simulation results demonstrate that the proposed UKF with temperature compensation exhibits lower mean squared errors in SOC and SOH estimation, ensuring robust and accurate performance, even as ambient temperatures decrease.
Thermodynamics Analysis of CrMnFeCoNi High-Entropy Alloys with Weak Local Segregation
Authors: Wang Daohang , Yi Lanjia , Lv Siyu , Yu Xida , Wang Yi , Wang Yudong 
Published: February 2025

Abstract
To study CrMnFeCoNi High-Entropy Alloys with Weak Local Segregation, here we mixed Back Scattered Electron (BSE) and Second Electron (SE) images (BSE+SE) to find the weak local segregations, which commonly exist in CrMnFeCoNi high-entropy alloy (HEA) as-cast ingots, but the contrast of the segregations is too low to draw attention before. These segregations are located mostly in the grain interiors, indicative of homogeneous nucleation. Microstructure is investigated using Scan Electron Microscopy and Energy Dispersive X-ray Spectroscopy too. Further, the thermodynamic analysis is performed around the melting point by differential scanning calorimetry (DSC). It was observed that the melting point did not vary significantly with changes in the specimen mass and heating rate except for whether weak local segregation exists or not. The melting points of CrMnFeCoNi HEA without segregation was 1409.45±4.15°Cwhich was around 74°C higher than that with segregation, and the melting enthalpy (ΔHM) of CrMnFeCoNi HEA without segregation was 17.84±2.09 kJ/mol.
Research Progress on Surface Modification of Biomedical Magnesium Alloys
Authors: Song Jie , Chen Yongbiao , Wang Kexin 
Published: February 2025

Abstract
Biomedical magnesium alloys have good biocompatibility, degradability, and mechanical properties, which have become an important medical implant material. However, the corrosion resistance of magnesium alloys is poor, and their degradation rate in vivo is very fast, making it a difficult point for their clinical application. The surface treatment technology of magnesium alloys was studied in this paper, and the current research status of commonly used surface treatment technologies for magnesium alloys was discussed. The development trends of surface treatment technologies for magnesium alloys were explored, and prospects for their future research and development directions were also put forward.
Wrinkle Assessment Method of Space Membrane Structures Based on Strength Factor
Authors: Yang Zhibo , Ji Haoran , Nie Yunqing , Wang Bing , Huo Da 
Published: February 2025

Abstract
The membrane structure is characterized by its small loading volume and high storage ratio, offering vast potential for applications in constructing large-scale spatial structures. However, membranes exhibit low bending stiffness, which makes them prone to wrinkling, thus affecting the surface accuracy of the structure and potentially leading to functional failure of the spatial structure. This paper employs a wrinkling prediction method based on the strength factor (i.e., the pseudo strain energy of wrinkles) as an indicator parameter to characterize the degree of wrinkling deformation in spatial membrane structures. Based on this method, the study predicts wrinkling deformation in a large solar sail structure, focusing on the impact of cable tension, edge reinforcement, and connecting elements on the degree of wrinkling deformation. Simulation results indicate that reducing cable tension can significantly decrease the degree of wrinkling deformation, but deviation of the cable direction from the membrane’s centroid can drastically increase the degree of wrinkling deformation. Adding reinforcement bands and connecting elements at the membrane’s edges can improve wrinkling deformation to some extent; however, the number of connecting elements on the support rods needs to be chosen rationally to achieve optimal wrinkle elimination. The wrinkling prediction method and analysis conclusions presented in this paper can provide references for design schemes and system improvements of spatial membrane structures.
Research on Carbon Reduction Potential of the SMA Asphalt Mixture in Life Cycle
Authors: Qian Zhihuo , Tian Miaomiao , Fang Tao , Huang Zheng , Zhang Haifeng , Zheng Kun 
Published: February 2025

Abstract
To research the carbon emissions of SMA asphalt mixture, SMA-13 and AC-13 asphalt mixtures were selected for comparative analysis, and the carbon emission amounts during the construction period and operation maintenance period were calculated. The research results indicated that the carbon emissions of SMA-13 during the construction period increased by 20.63% compared to AC-13; however, due to the improved performance, SMA-13 could reduce one preventive maintenance and one repair maintenance project compared to AC-13 within the design life. Therefore, the carbon emissions during the operation and maintenance period of SMA-13 could be reduced by 21.26% compared to AC-13, meanwhile with better performance. Based on the life cycle theory, SMA-13 could reduce comprehensive carbon emissions by 11.40% compared to AC-13. Therefore, SMA has better long-term carbon reduction capabilities and is an ideal durable green low-carbon technology for roads. It should be widely promoted and applied in national roads construction.