Article
Mechanics
Mikel Escalero, Miguel Muniz-Calvente, Haritz Zabala, Iker Urresti
Summary: Extensive literature suggests that fatigue cracks tend to reach a stable stage with a quasi-constant crack shape under the influence of an iso crack driving force (CDF) distribution. This study investigates fatigue crack growth using a finite element simulation approach and a theoretical analysis. The results contradict previous findings and demonstrate that naturally growing fatigue cracks converge towards a quasi-constant crack-shape regime, influenced by a non-iso CDF distribution dependent on material properties and the stable crack shape.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Nanoscience & Nanotechnology
Fengyuan Zhang, Hua Fan, Bing Han, Yudong Zhu, Xiong Deng, David Edwards, Amit Kumar, Deyang Chen, Xingsen Gao, Zhen Fan, Brian J. Rodriguez
Summary: Observation of significantly enhanced injection currents induced by polarization switching in BiFeO3 thin films via conductive atomic force microscopy. The injected current can be effectively modulated by applying mechanical force, increasing the peak current by 2-3 orders of magnitude. This mechanical modulation may be attributed to changes in barrier height and interfacial layer width induced by mechanical force.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Polymer Science
Achraf Kallel, Abir Ben Abdallah, Fehmi Gamaoun, Sedigheh Farzaneh, Hachmi BenDaly, Joseph Fitoussi, Abbas Tcharkhtchi
Summary: This study evaluated the shape memory effect of a PCL and SBS blend, finding that the effect grows with increasing number of cycles. Stored energy acts as a driving force in bringing the polymer back to its original shape. A new method was proposed to measure stress-strain evolution during recovery, as standard tests were unable to track this evolution with variable temperature.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Astronomy & Astrophysics
Daiki Suenaga, Yasufumi Araki, Kei Suzuki, Shigehiro Yasui
Summary: We propose a new mechanism for heavy-quark spin polarization in quark matter induced by the Kondo effect under an external magnetic field. Through coupling between light quarks and the magnetic field in quark matter, the HQSP is driven by the Kondo effect. The results show a significant increase in HQSP with the appearance of the Kondo effect, which can be tested in future sign-problem-free lattice simulations.
Article
Physics, Particles & Fields
Duanyang Zhao, Igor P. Ivanov, Roman Pasechnik, Pengming Zhang
Summary: This paper investigates the issue of suppressed flavor-changing neutral couplings (FCNC) in the CP4 3HDM model and develops an efficient scanning procedure to explore this. The study finds that out of the eight possible CP4 Yukawa sectors, only two scenarios are compatible with the oscillation constraints. The results of this work provide clear guidelines for future phenomenological scans of the model.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Xiqing Ge, Shan Liu, Guangchun Wang
Summary: This study investigates the effect of transient and high-energy pulse current on the phase transformation behavior of NiTi shape memory alloy. The results show that THEPC increases the start temperature of martensitic transformation and changes the transformation sequence.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Mathematics, Interdisciplinary Applications
Wang Zhongchang, Hou Songlei, Yuan Ye, Li Guowei
Summary: A study was conducted to investigate the formation of soil arches during soil and sand burst and leakage, using a model library and model. The results showed an inverse relationship between displacement and deformation of the soil body and the thickness-to-span ratio, as well as an increase in the skeleton effect of gravel particles with an increase in the thickness-to-span ratio. The number of calculation steps required for soil arch formation decreased when the thickness-to-span ratio exceeded a critical point. Load fluctuation and coordination number served as indicators of soil arch formation.
COMPUTATIONAL PARTICLE MECHANICS
(2023)
Article
Materials Science, Multidisciplinary
Hiroshi Funaki, Gen Tatara
Summary: Theoretical study on the magnon drag effect in ferromagnetic metals induced by an applied electric field has shown that magnon scattering contribution dominates over emission and absorption in good metals with long elastic lifetime. This is due to a relative suppression factor brought by electron spin flip by the magnon, which is a crucial factor in discussing spin-transfer efficiency.
Article
Mathematics, Applied
Manuel Garzon, Stefano Maro
Summary: This paper investigates the non-relativistic dynamics of a charged particle in a periodically time dependent electromagnetic field induced by a current along an infinitely long straight wire. The study shows the existence of radially periodic motions of twist type, which are Lyapunov stable and accumulated by subharmonic and quasiperiodic motions. Features of the integrable time independent case are preserved in this scenario.
PHYSICA D-NONLINEAR PHENOMENA
(2021)
Article
Engineering, Chemical
Yuxiong Zou, Gang Ma, Shiwei Zhao, Shengshui Chen, Wei Zhou
Summary: Particle shape is a key factor in determining the macroscopic shear strength of granular materials, but the underlying mechanism of this dependence is not well understood. This paper presents a micro-mechanical study on the shape-dependent shear strength through force transmission and microstructure analysis. Simple shear tests are conducted on ellipsoidal assemblies with various aspect ratios. The results show that the contribution of tangential force to shear stress is significant and increases with particle asphericity, exceeding the contribution of normal force. The dependence of these two contact forces on particle shape leads to a nonlinear increase in shear strength with particle asphericity.
Article
Physics, Fluids & Plasmas
Ansgar Siemens, Peter Schmelcher
Summary: In the study of a charged particle confined to move on a toroidal helix under the influence of an external time-dependent electric field, the dynamics of linearly and circularly polarized fields in the underlying phase space are investigated. For small driving amplitudes and a linearly polarized field, a split up of the chaotic part of the phase space is found, while a second mechanism of split up is unraveled for very large driving amplitudes with a circularly polarized field.
Article
Physics, Multidisciplinary
Shmuel Gurvitz
Summary: This study investigates time-dependent electron current through a quantum dot under external drive, obtaining simple analytic expressions for current generated by periodic pulses. The results demonstrate transient and steady-state behavior following a local quench, described by the same universal function of the external drive. The findings have applications in analyzing current generated by various types of pulses and in studying On-Demand Single-Electron sources and laser-driven junctions.
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2021)
Article
Physics, Multidisciplinary
Haseeb Ur Rehman, Tooba Feroze
Summary: This article investigates the conserved quantities of the approximate symmetries of perturbed Lagrange systems. The research discovers new conserved quantities induced by the approximate Lie symmetry of perturbed Lagrange systems and provides insights into their precise form and prerequisites. Additionally, it explores the relationships between Noether, Mei, and Lie approximate symmetries and highlights their use in inferring novel types of conserved quantities. The article concludes by illustrating some examples.
Article
Multidisciplinary Sciences
Summary: This article discusses the importance and interactions of the Higgs boson in the standard model of particle physics, as well as the latest measurement results, which demonstrate that the Higgs boson is remarkably consistent with theoretical predictions and provide significant constraints on exploring new phenomena beyond the standard model.
Article
Chemistry, Physical
Asaf Dana, Hiroshi Sekiguchi, Koki Aoyama, Eilon Faran, Klaus-Dieter Liss, Doron Shilo
Summary: Researchers studied the reverse martensitic transformation in a shape memory alloy under high thermodynamic driving force regime, tracking the evolution of the transformation at microsecond scale using time-resolved X-ray diffraction and force measurements.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Multidisciplinary
Franz G. Mertens, Niurka R. Quintero
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2020)
Article
Multidisciplinary Sciences
F. Maciel Cardoso, S. Meloni, C. Gracia-Lazaro, A. Antonioni, J. A. Cuesta, A. Sanchez, Y. Moreno
Summary: Research has shown that contributions to public goods can be influenced by different framing conditions. Specifically, people are more willing to contribute when social donations are presented as indirect donations. Women tend to contribute more to public goods and donate more to charity compared to men.
ROYAL SOCIETY OPEN SCIENCE
(2021)
Article
Physics, Multidisciplinary
Franz G. Mertens, Bernardo Sanchez-Rey, Niurka R. Quintero
Summary: The research focuses on the dynamics of solitons in a one-dimensional nonlinear model based on the ABS model for Dirac spinors, exploring the behavior of solitons under different potentials and developing a collective coordinates theory to describe the moving solitons. The results of the CCs theory are confirmed through simulations of numerical solutions for solitons in the ABS spinor model.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2021)
Review
Biology
Susanna Manrubia, Jose A. Cuesta, Jacobo Aguirre, Sebastian E. Ahnert, Lee Altenberg, Alejandro V. Cano, Pablo Catalan, Ramon Diaz-Uriarte, Santiago F. Elena, Juan Antonio Garcia-Martin, Paulien Hogeweg, Bhavin S. Khatri, Joachim Krug, Ard A. Louis, Nora S. Martin, Joshua L. Payne, Matthew J. Tarnowski, Marcel Weiss
Summary: This article discusses the knowledge of how genotypes map onto molecular phenotypes and organismal functions, and explores theoretical and empirical approaches to broaden and improve this understanding, aiming to derive an updated picture of evolutionary processes.
PHYSICS OF LIFE REVIEWS
(2021)
Article
Multidisciplinary Sciences
Diego Escribano, Victoria Doldan-Martelli, Francisco J. Lapuente, Jose A. Cuesta, Angel Sanchez
Summary: The study found that in early adolescence, students have an increasing number of social relationships, but the proportion of more intense relationships decreases over time. The community structure shows a trend of gender separation in its temporal evolution, with each community stabilizing at around 15 people.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Ignacio Tamarit, Angel Sanchez, Jose A. Cuesta
Summary: This paper discusses resource allocation problems in human relationship patterns using a new formalism that allows for continuous values of resource costs. The study shows that there is a characteristic parameter eta, analogous to the ratio of relationships between adjacent circles in the discrete case, which has a value similar to 6. The findings suggest the existence of a universal feature in how humans manage relationships, and that online personal networks mirror offline relationship structures.
SCIENTIFIC REPORTS
(2022)
Article
Mathematics, Applied
R. Alvarez-Nodarse, K. Castillo, D. Mbouna, J. Petronilho
Summary: In this paper, a new concept of coherent pairs is introduced and known results are revisited using the discrete Hahn difference operator. Additionally, a detailed description of self-coherent pairs in specific situations is provided. The classical orthogonal polynomials are shown as special cases of a four-parametric family of q-polynomials.
JOURNAL OF DIFFERENCE EQUATIONS AND APPLICATIONS
(2022)
Article
Physics, Multidisciplinary
Pablo Raban, Renato Alvarez-Nodarse, Niurka R. Quintero
Summary: The stability of topological solitary waves and pulses in one-dimensional nonlinear Klein-Gordon systems is investigated. The linearized equation leads to a Sturm-Liouville problem, which is systematically solved for the l(l+1)sech(2)(x) potential, demonstrating the orthogonality and completeness of the solution set. Two families of novel nonlinear Klein-Gordon potentials are introduced, and their exact solutions are calculated even when the nonlinear potential is unknown. It is found that the kinks of the novel models are stable, while the pulses are unstable unless certain spatial inhomogeneities are introduced.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2022)
Article
Multidisciplinary Sciences
Miguel Ruiz-Garcia, Juan Ozaita, Maria Pereda, Antonio Alfonso, Pablo Branas-Garza, Jose A. Cuesta, Angel Sanchez
Summary: Networks of social interactions are crucial for civilizations, but the quantitative understanding of them is still limited. This study examines real social networks in 13 schools, involving over 3,000 students and 60,000 relationships. The triadic influence metric is introduced to measure the impact of nearest neighbors, which outperforms personal traits in predicting relationship signs.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Physics, Multidisciplinary
Pablo Catalan, Juan Antonio Garcia-Martin, Jacobo Aguirre, Jose A. Cuesta, Susanna Manrubia
Summary: Not all phenotypes are equally accessible to evolving populations. Larger phenotypes resulting from a variety of genotypes are more common and easily maintained. Genotypes that map to these phenotypes form connected networks, allowing access to numerous alternative phenotypes. The reproductive ability and topology of the genotype network impact the fitness of a phenotype, and a fraction of phenotypes is unattainable.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2023)
Editorial Material
Multidisciplinary Sciences
Susanna Manrubia, Jose A. Cuesta
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Physics, Fluids & Plasmas
Diego Escribano, Jose A. Cuesta
Summary: Ensemble models of graphs, especially exponential random graphs (ERGs), are important tools in studying complex networks, particularly in the analysis of social networks. This paper presents a technique borrowed from the statistical mechanics of lattice gases to solve Strauss's model of transitive networks. The method accurately describes even small networks and can be extended to networks with different types of nodes.
Article
Physics, Fluids & Plasmas
Luciano Stucchi, Javier Galeano, Juan Manuel Pastor, Jose Maria Iriondo, Jose A. Cuesta
Summary: The study demonstrates that transitions in ecological interactions may arise as a consequence of evolution, using a combination of adaptive dynamics and a generalized logistic model of population dynamics. The two-microbial toy model introduced in the study, though simple, showcases various potential ecological transitions, some of which mirror those found in nature. Overall, the model displays a clear trend towards the emergence of mutualism.
Proceedings Paper
Optics
D. Mellado-Alcedo, N. R. Quintero, R. Gonzalez-Ferez
31ST INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS (ICPEAC XXXI)
(2020)