Results in Physics最新文献

{"title":"A novel approach for determining the peak-to-valley current ratio in nanomaterial devices","authors":"A.M. Elabsy","doi":"10.1016/j.rinp.2025.108306","DOIUrl":"10.1016/j.rinp.2025.108306","url":null,"abstract":"<div><div>The peak-to-valley current ratio (PVCR) was determined using a new method based on the transfer matrix technique. This method was applied to right-triangular (sawtooth) and rectangular nanomaterial double barrier diodes composed of GaAs-Ga_1-yAl_yAs semiconductor materials. It was observed that the well width, barrier thickness, and aluminum content of the barrier material, along with the applied bias voltage and temperature, significantly influenced the PVCR values. It was also found that the resonant tunneling nanostructured devices have pronounced PVCR values at low temperatures and nearly thick barriers. The results of the PVCR are in good agreement with the published experimental and theoretical data. This method can be applied to estimate the required parameters for high-performance resonant nanostructure devices.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"74 ","pages":"Article 108306"},"PeriodicalIF":4.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134183","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}

{"title":"Convolution of the physical point cloud for predicting the self-assembly of colloidal particles","authors":"Seunghoon Kang ,&nbsp;Young Jin Lee ,&nbsp;Kyung Hyun Ahn","doi":"10.1016/j.rinp.2025.108296","DOIUrl":"10.1016/j.rinp.2025.108296","url":null,"abstract":"<div><div>This paper presents a novel algorithm for predicting the kinetic and thermodynamic pathways of colloidal systems. The approach involves constructing a physical point cloud from inter-particle stress information extracted from randomly distributed colloidal particles and embedding it into a graph convolutional network (GCN). In the field of pattern recognition, GCNs are widely utilized to classify arbitrary 3D objects by learning multidimensional relationships within feature spaces defined by spatial coordinates. In contrast, our study constructs a feature space based on the micromechanical stresses imparted on colloidal particles during their self-assembly, rather than relying on spatial information. This enables predictive functionality within the classification task. Using this method, we discover for the first time that the convolution of canonical physical information can predict the self-assembly of colloids by observing only the initial configurations of colloidal particles, whereas conventional pattern recognition techniques using spatial information could only recognize phase transitions near completion. The phases predicted by our model are not limited to liquid-like dispersions and solid–liquid phase separations, where thermodynamic equilibrium differs, but also include sample-spanning gel structures, where only kinetics differ while thermodynamics remain the same. Furthermore, although we train the semantic stress relationships that constitute each phase of the network using same-sized particles with a pre-specified inter-particle interaction, our algorithm demonstrates generalized predictive performance even for suspensions with randomly distributed particle sizes. Our results make it possible to predict the phase behavior of colloidal systems where traditional theoretical approaches have been challenging or impossible due to the inherent complexity of the colloidal system. Given that colloids are characterized by extremely small length scales, long times are required for observable macroscopic changes resulting from self-assembly. Therefore, this study is expected to serve as a highly useful decision-support method for engineering soft matter with desired morphologies.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"74 ","pages":"Article 108296"},"PeriodicalIF":4.4,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115153","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}

{"title":"Shifted Chebyshev polynomials method for Caputo-Hadamard fractional Ginzburg–Landau equation","authors":"M.H. Heydari ,&nbsp;F. Rostami ,&nbsp;M. Bayram ,&nbsp;D. Baleanu","doi":"10.1016/j.rinp.2025.108289","DOIUrl":"10.1016/j.rinp.2025.108289","url":null,"abstract":"<div><div>This paper introduces a fractional version of the Ginzberg–Landau equation utilizing the Caputo-Hadamard derivative. To address this problem, a numerical method based on the shifted Chebyshev polynomials is developed. To employ this approach, a formula for calculating the Hadamard fractional integral of these polynomials is derived. Using this formula, an operational matrix associated with the Hadamard fractional integral of the shifted Chebyshev polynomials is constructed. By expressing the solution of the problem in terms of its real and imaginary parts, the fractional differential equation is transformed into a system of fractional differential equations with real solutions, corresponding to the real and imaginary components of the original problem. Next, the fractional terms in the resulting system are expanded using the expressed polynomials. The presented fractional integral operational matrix is then employed to obtain finite expansions for the solution of the aforementioned system. Utilizing the ordinary second-order derivative operational matrix of the applied shifted polynomials and the collocation method, the fractional system is solved by addressing a system of nonlinear algebraic equations. This approach directly yields the solution to the Ginzberg–Landau equation. The convergence of the established method is rigorously examined both theoretically and numerically, supported by three illustrative numerical examples.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"74 ","pages":"Article 108289"},"PeriodicalIF":4.4,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115155","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}

{"title":"A novel numerical approach to find the optimal frequency of Rayleigh–Plateau instability in laminar jet breakup for uniform droplet generation","authors":"Sepehr Mousavi,&nbsp;Majid Siavashi","doi":"10.1016/j.rinp.2025.108305","DOIUrl":"10.1016/j.rinp.2025.108305","url":null,"abstract":"<div><div>One of the key aspects of studying Rayleigh-Plateau instability and laminar jet breakup is identifying the optimal disturbance wavelength. By inducing artificial disturbances with an optimal frequency or wavelength in a laminar jet, uniformly sized droplets can be produced. Most existing methods for calculating the optimal wavelength in Rayleigh-Plateau instability rely on analytical approaches with significant simplifications, leading to various limitations. The main goal of this study is to develop an effective numerical method to identify the optimal frequency in Rayleigh-Plateau instability. First, the numerical results are validated with experimental data. Then, a systematic method for calculating the optimal frequency using simulated data and the discrete Fourier transform (DFT) is proposed. This method serves as an alternative to common trial-and-error methods and inaccurate analytical approaches, providing a low-cost and highly accurate prediction of the optimal frequency. This method is applied to determine the optimal frequency for different flow conditions (<span><math><mrow><mi>W</mi><mi>e</mi><mi>b</mi><mi>e</mi><mi>r</mi><mspace></mspace><mrow><mfenced><mrow><mi>W</mi><mi>e</mi></mrow></mfenced></mrow><mo>=</mo><mspace></mspace><mn>6</mn><mo>;</mo><mspace></mspace><mn>0.013</mn><mspace></mspace><mo>≤</mo><mspace></mspace><mi>O</mi><mi>h</mi><mi>n</mi><mi>e</mi><mi>s</mi><mi>o</mi><mi>r</mi><mi>g</mi><mi>e</mi><mspace></mspace><mrow><mo>(</mo><mi>O</mi><mi>h</mi><mo>)</mo></mrow><mo>&lt;</mo><mspace></mspace><mn>0.219</mn></mrow></math></span>). Finally, the impact of two parameters, including the inner to outer diameter ratio (<span><math><mrow><mi>b</mi><mo>=</mo><msub><mrow><msub><mi>D</mi><mi>I</mi></msub><mo>/</mo><mi>D</mi></mrow><mi>O</mi></msub></mrow></math></span>) and the contact angle, on the optimal frequency is examined. The results show that increasing <span><math><mrow><mi>b</mi></mrow></math></span> can increase the optimal frequency by up to 70 %. Additionally, increasing the contact angle from <span><math><mrow><msup><mn>30</mn><mo>°</mo></msup></mrow></math></span> to <span><math><mrow><msup><mn>120</mn><mo>°</mo></msup></mrow></math></span> raises the optimal frequency from <span><math><mrow><mn>160</mn><mi>H</mi><mi>z</mi></mrow></math></span> to <span><math><mrow><mn>192</mn><mi>H</mi><mi>z</mi></mrow></math></span> while <span><math><mrow><mi>Oh</mi><mo>=</mo><mn>0.013</mn></mrow></math></span> and <span><math><mrow><mi>b</mi><mo>=</mo><mn>0.56</mn></mrow></math></span>.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"74 ","pages":"Article 108305"},"PeriodicalIF":4.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115154","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}

{"title":"Pressure-induced decomposition of β-SnWO4","authors":"Sergio Ferrari ,&nbsp;Daniel Diaz-Anichtchenko ,&nbsp;Pablo Botella ,&nbsp;Jordi Ibáñez ,&nbsp;Robert Oliva ,&nbsp;Alexei Kuzmin ,&nbsp;Alfonso Muñoz ,&nbsp;Frederico Alabarse ,&nbsp;Daniel Errandonea","doi":"10.1016/j.rinp.2025.108304","DOIUrl":"10.1016/j.rinp.2025.108304","url":null,"abstract":"<div><div>This study reports the decomposition of β-SnWO₄ into Sn, SnO₂, and WO₃ induced by static compression. We performed high-pressure synchrotron powder angle-dispersive X-ray diffraction measurements and found that decomposition occurs at a pressure of 13.97(5) GPa and is irreversible. This result contradicts a previous study that, based on density-functional theory calculations and crystal-chemistry arguments, predicted a pressure-driven transition from β-SnWO₄ to α-SnWO₄. Our analysis indicates that the observed decomposition is unrelated to mechanical or dynamic instabilities. Instead, it likely stems from frustration of the β → α transition, as this transformation requires a change in Sn coordination from octahedral to tetrahedral.The assessment of how pressure influences the volume of the unit cell provided an accurate determination of the room-temperature pressure–volume equation of state for β-SnWO₄. Furthermore, the elastic constants and moduli, as well as the pressure dependence of Raman and infrared modes of β-SnWO₄, were derived from density-functional theory calculations. Several phonon modes exhibited softening, and three cases of phonon anti-crossing were observed.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"74 ","pages":"Article 108304"},"PeriodicalIF":4.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099009","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}

{"title":"Tuning the optoelectronic properties of GaAs/AlxGa1−xAs core/shell tetrapod quantum dots with a single dopant","authors":"A. Ed-Dahmouny ,&nbsp;H.M. Althib ,&nbsp;R. Arraoui ,&nbsp;A. Fakkahi ,&nbsp;M. Jaouane ,&nbsp;H. Azmi ,&nbsp;J. El-Hamouchi ,&nbsp;K. El-Bakkari ,&nbsp;A. Sali","doi":"10.1016/j.rinp.2025.108281","DOIUrl":"10.1016/j.rinp.2025.108281","url":null,"abstract":"<div><div>This study investigates the optical properties of a novel core–shell tetrapod nanostructure composed of a GaAs core and an Al<span><math><msub><mrow></mrow><mrow><mi>x</mi></mrow></msub></math></span>Ga<span><math><msub><mrow></mrow><mrow><mn>1</mn><mo>−</mo><mi>x</mi></mrow></msub></math></span>As shell. Our focus is on understanding how its shape, geometry, and external factors influence its optical evolution. The aluminum concentration, <span><math><mi>x</mi></math></span>, within the shell serves as a crucial parameter, directly controlling the confinement well depth, and our analysis employs the finite element method (FEM). Specifically, we investigated the influence of dopant position along the (<span><math><mrow><mi>O</mi><mi>z</mi></mrow></math></span>) axis and aluminum concentration on the first three energy levels. We found that increasing the dopant distance from the electron and raising the aluminum concentration both contribute to an increase in the energy levels, attributed to a deeper confinement well. Additionally, we examined the linear, non-linear, and total optical absorption coefficient (OAC) and total refractive index change (RIC) for the two low-lying energy transitions 1<span><math><mo>→</mo></math></span>2 and 2<span><math><mo>→</mo></math></span>3. The results reveal a blueshift and a decrease in amplitude for the 1<span><math><mo>→</mo></math></span>2 transition as the aluminum concentration increases. Expanding on previous experimental results, this research highlights the potential of these structures for groundbreaking applications in nanoelectronics and next-generation solar cells.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"74 ","pages":"Article 108281"},"PeriodicalIF":4.4,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144083820","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}

{"title":"All-optical memory based on surface plasmons and Kerr-type nonlinear cavity","authors":"Dariush Jafari,&nbsp;Mohammad Danaie","doi":"10.1016/j.rinp.2025.108301","DOIUrl":"10.1016/j.rinp.2025.108301","url":null,"abstract":"<div><div>This paper presents a novel ultra-fast all-optical plasmonic memory architecture designed for next-generation integrated photonic circuits. The proposed memory cell employs metal–insulator-metal (MIM) plasmonic waveguides integrated with Kerr-type nonlinear nanocavities to enable efficient all-optical switching. Through systematic finite-difference time-domain (FDTD) simulations, we demonstrate robust operation across standard telecommunication wavelengths while maintaining precise wavelength tunability. The optimized design achieves remarkable performance metrics, including an ultra-low enable intensity of 7 MW/cm², a compact footprint of 1.2 μm², and sub-100-femtosecond switching speeds. Detailed analysis of Poynting vector distributions reveals how plasmonic nanocavity resonances facilitate optical bistability, providing critical insights into the operational mechanism. Compared with existing all-optical memory solutions, our architecture offers superior power efficiency, enhanced transmission contrast, and higher integration density. These advantages position the proposed design as an ideal candidate for high-performance optical computing systems and on-chip memory applications, addressing key challenges in photonic data processing.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"74 ","pages":"Article 108301"},"PeriodicalIF":4.4,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144083822","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}

{"title":"Influence of tool rotational speed on microstructure, mechanical strength, and wear behavior of AA7075 matrix composites via deformation-driven metallurgy","authors":"Alireza Ramezani,&nbsp;Hamed Jamshidi Aval,&nbsp;Roohollah Jamaati","doi":"10.1016/j.rinp.2025.108300","DOIUrl":"10.1016/j.rinp.2025.108300","url":null,"abstract":"<div><div>The pursuit of high-performance aluminum matrix composites (AMCs) for advanced engineering applications has driven interest in novel fabrication techniques. This study explores the deformation-driven metallurgy (DDM) method for producing AA7075-Al₂O₃ composites, shedding light on how tool rotational speed influences their microstructure, mechanical properties, and wear resistance. Unlike conventional melt-based methods, DDM leverages severe plastic deformation to achieve unique material characteristics. A standout finding of this research is the exceptional uniformity and refinement of Al₂O₃ particles (7.3 ± 1.3 µm) achieved at 800 rpm, along with a remarkable ultimate tensile strength of 613.3 ± 12.1 MPa—significantly surpassing prior reports for similar composites. Interestingly, while increasing rotational speed to 1400 rpm resulted in grain coarsening from 5.4 ± 0.9 µm to 19.1 ± 0.4 µm, the process maintained a random texture across all samples. The composite fabricated at 800 rpm also exhibited superior hardness (202.05 ± 3.32 HV0.1) and the lowest wear rate (4.8 ± 0.2 µg/m), making it a promising candidate for applications requiring high strength and wear resistance. This study not only demonstrates the effectiveness of DDM in producing high-performance composites but also highlights the critical role of process parameters in tailoring material properties, offering insights distinct from traditional fabrication approaches.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"74 ","pages":"Article 108300"},"PeriodicalIF":4.4,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144108021","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}

{"title":"Strain-tunable electronic, optical and thermoelectric properties of two-dimensional Janus SbXI (X=S, Se, Te) monolayers: A first-principles study","authors":"Fredy Mamani Gonzalo ,&nbsp;Victor José Ramirez Rivera ,&nbsp;Julio R. Sambrano ,&nbsp;Maurício Jeomar Piotrowski ,&nbsp;Efracio Mamani Flores","doi":"10.1016/j.rinp.2025.108288","DOIUrl":"10.1016/j.rinp.2025.108288","url":null,"abstract":"<div><div>The exploration of novel, atomically thin, and stable two-dimensional (2D) materials remains an important and active area of study, driving progress in both fundamental science and practical applications within contemporary materials research, particularly in electronic, thermoelectric, and optical domains. Through first-principles density functional theory (DFT) calculations, Three semiconducting Janus monolayers was systematically investigated: SbSI, SbSeI and SbTeI. The comprehensive analysis demonstrates excellent dynamical and energetic stability, indicating the feasibility of mechanical exfoliation for experimental realization. Electronic structure calculations reveal indirect bandgaps of 1.57 (2.12), 1.30 (1.80), and 1.22 (1.64) eV for SbSI, SbSeI, and SbTeI, respectively, using PBE (HSE06) functionals, with the SbSeI monolayer exhibiting an exceptional electron mobility of 213.96 cm<span><math><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup></math></span>V⁻¹s⁻¹, surpassing that of the well-established MoS<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>. Remarkably, at 800 K, the SbSeI monolayer achieves outstanding thermoelectric performance, characterized by a figure of merit (<span><math><mrow><mi>Z</mi><mi>T</mi></mrow></math></span>) of 5.39, facilitated by an ultralow lattice thermal conductivity of 0.14 W/mK. Furthermore, upon application of +8% biaxial strain, the SbTeI monolayer displays notable optical properties, including a high reflectivity of 64.00% in the ultraviolet region (<span><math><mo>∼</mo></math></span> 250 nm) and an absorption coefficient of 121.98 × 10<span><math><msup><mrow></mrow><mrow><mn>4</mn></mrow></msup></math></span> cm⁻¹. These findings underscore the significant potential of Janus SbXI (X = S, Se, Te) monolayers for next-generation energy conversion applications, offering promising avenues for efficient energy harvesting and thermal management while enabling novel functionalities in nanoscale optical devices.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"74 ","pages":"Article 108288"},"PeriodicalIF":4.4,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099008","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}

{"title":"Optoelectronic properties of CdSe/ZnSe and ZnSe/CdSe core/shell spheroidal prolate quantum dots through the geometrical parameters and dielectric oxide matrix: A theoretical investigation","authors":"N. Zeiri ,&nbsp;N. Yahyaoui ,&nbsp;N.Ahmed Althumairi ,&nbsp;F. Alhajri ,&nbsp;A. Jbeli ,&nbsp;M. Said","doi":"10.1016/j.rinp.2025.108299","DOIUrl":"10.1016/j.rinp.2025.108299","url":null,"abstract":"<div><div>In this work, we have investigated theoretically the simultaneous effects of the geometrical parameters and encapsulated dioxide matrix on the electronic and optical properties of CdSe/ZnSe spheroidal prolate core/shell quantum dots (SPCSQDs). The energy eigenvalues and their related wavefunctions were calculated by solving the Schrodinger equation in spheroidal coordinates within the framework of the effective mass approximation (EMA). The third-order optical nonlinear (TON) susceptibility was computed and discussed under the Compact Density Matrix approach. Our numerical results revealed that the <span><math><mrow><msup><mrow><mi>χ</mi></mrow><mrow><mfenced><mrow><mn>3</mn></mrow></mfenced></mrow></msup></mrow></math></span> for both structures: CdSe/ZnSe and ZnSe/CdSe SPCSQDs are strongly affected by the geometric factors and embedded dioxide matrix. We hope that this theoretical study can make a significant contribution to experimental studies and practical applications.</div></div>","PeriodicalId":21042,"journal":{"name":"Results in Physics","volume":"74 ","pages":"Article 108299"},"PeriodicalIF":4.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130805","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}