Article
Engineering, Ocean
Dharma K. K. Sree, Sourav Mandal, Adrian Wing-Keung Law
Summary: The study investigates surface wave interactions with submerged horizontal viscoelastic sheets of varying rheological properties through experimental and analytical methods. The results show that the wave-sheet interactions are complex, with the wave pattern depending significantly on the rheological properties of the sheet, especially for larger submergence where standing wave patterns develop along the sheet with a reduction in wave energy transmission.
APPLIED OCEAN RESEARCH
(2021)
Article
Optics
Caoyuan Wang, Ruowei Yu, Cong Xiong, Jie Zhu, Limin Xiao
Summary: For the first time, a novel approach to fusion splicing an anti-reflective coated conventional fiber and an anti-resonant hollow-core fiber is developed, achieving ultralow fusion splicing loss less than 0.3 dB and low return loss less than -28 dB. This new fusion splicing approach will benefit the wide application of hollow-core fibers in telecoms, laser technologies, gyroscopes, and fiber gas cells.
Article
Engineering, Multidisciplinary
Jiangong Yu, Cancan Liu, Chuang Yang, Bo Zhang, Xiaoming Zhang, Yuemin Zhang
Summary: Taking into consideration the effects of viscoelasticity and size-dependency, this study investigates the reflection and transmission of elastic waves through functionally graded viscoelastic plates sandwiched between two elastic half-spaces. The extended analytical integration Legendre polynomial method and Kelvin-Voigt viscoelastic model under the modified couple stress theory are utilized for the derivation. The global matrix method is employed to validate the extended analytical integration Legendre polynomial method. The study discusses the influences of couple stress, viscoelasticity, and medium inhomogeneity on elastic wave reflection and transmission, as well as the attenuation caused by viscoelasticity.
APPLIED MATHEMATICAL MODELLING
(2022)
Article
Physics, Multidisciplinary
Ya-Ting Qiu, Li-Hong Hong, Zhi-Yuan Li
Summary: This work theoretically and systematically investigates the second harmonic generation (SHG) in a lithium niobate (LN) crystal by considering the transmission and reflection of TE-polarized pump light at the air-crystal interface. The physical process of light beam transport and nonlinear optical polarization generation in the crystal is described, and the reflection coefficient and transmission coefficient of pump light are derived. The conversion efficiency of the second-harmonic wave is found to depend on the transmission coefficient and other physical quantities, such as the length of the crystal and the amplitude of pump light, under the transmission and reflection models. The proposed analytical theory and formulation provide an accurate tool for evaluating the SHG energy conversion efficiency in practical situations and can be applied to other nonlinear optics problems.
Article
Optics
Xiangfei Gao, Zebin Zhu, Jing Yuan, Liyong Jiang
Summary: The study focuses on the characteristics of anisotropic photonic crystals containing graphene and phase-change material VO2, demonstrating various optical phenomena under different conditions. These phenomena can be freely switched in the terahertz region by adjusting the chemical potential of graphene and the phase of VO2.
Article
Optics
Igor Kozhevnikov
Summary: The paper analyzes the reflection and transmission of a wave falling onto a stratified medium using RT-matrixes, and demonstrates their practical use in calculations, especially in the analysis of wave reflection from periodic and aperiodic multilayer structures with different interfaces.
OPTICS COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Panpan Zhang, Ze Lei, Xing Zhang, Zhibin Yang, Yihan Ling, Suping Peng
Summary: This study investigates the performance of reduced La0.4Sr0.6Co0.2Fe0.7Nb0.1O3-delta (LSCFN) with anchored Co-Fe nanoparticles as an electrode in low concentration ethanol for power generation from ethanol by solid oxide fuel cells (SOFCs). The results show that the LSCFN electrode exhibits considerable peak power density and excellent durability. Furthermore, when used as a catalyst layer, the LSCFN significantly improves the coking resistance and stability of the Ni-YSZ anode-supported cell in ethanol fuel.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Multidisciplinary Sciences
Haig A. Atikian, Neil Sinclair, Pawel Latawiec, Xiao Xiong, Srujan Meesala, Scarlett Gauthier, Daniel Wintz, Joseph Randi, David Bernot, Sage DeFrances, Jeffrey Thomas, Michael Roman, Sean Durrant, Federico Capasso, Marko Loncar
Summary: This study demonstrates the creation of highly reflective mirrors that can withstand high-power laser irradiation without damage. These mirrors are made of single-crystal diamond with etched nanostructures, and exhibit reflectivities of over 98%. The findings have the potential to improve or create new applications for high-power lasers.
NATURE COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Lin Zhou, Zhongxiang Shen
Summary: A novel frequency-selective rasorber (FSR) is proposed in this article, which combines low-frequency diffusion and high-frequency absorption to provide a high-efficiency transmission band and a broadband radar cross section (RCS) reduction. The FSR consists of three layers, with each layer designed for specific functions to achieve the desired performance. The simulation and measurement results show that the FSR sample exhibits significant monostatic RCS reduction over a wide frequency range, outperforming a metallic plane of the same size.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Physics, Multidisciplinary
C. Garcion, N. Fabre, H. Bricha, F. Perales, S. Scheel, M. Ducloy, G. Dutier
Summary: At nanometer separation, the dominant interaction between an atom and a material surface is the fluctuation-induced Casimir-Polder potential. Slow atoms crossing a silicon nitride transmission nanograting are a remarkably sensitive probe for that potential, with a discernible 15% difference between nonretarded and retarded potentials at distances smaller than 51 nm. The study discusses the relative influence of various theoretical and experimental parameters on the potential in detail, paving the way for high-precision measurement of the Casimir-Polder potential for applications in quantum-enhanced sensing.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Edith Bellet-Amalric, Federico Panciera, Gilles Patriarche, Laurent Travers, Martien den Hertog, Jean-Christophe Harmand, Frank Glas, Joel Cibert
Summary: The growth of ZnTe nanowires and ZnTe-CdTe nanowire heterostructures was studied using in situ transmission electron microscopy. The balance between one monolayer and two monolayer steps during different growth modes, as well as the role of mismatch strain and lattice coincidence between gold and ZnTe, were discussed. The formation of an interface between CdTe and ZnTe was also described.
Article
Construction & Building Technology
Dongdong Yuan, Wei Jiang, Yukai Hou, Jingjing Xiao, Xianwu Ling, Chengwei Xing
Summary: In this study, a finished HVMA and two laboratory-produced HVMA samples were investigated to explain the dynamic viscoelastic characteristics of high-viscosity modified asphalt (HVMA) more comprehensively. Strain sweep tests and frequency sweep tests were conducted to define the linear viscoelastic range and analyze the viscoelastic properties of the HVMA samples. A HVMA fractional derivative viscoelastic model was proposed and compared to the traditional Sigmoid function model. The results showed that the 1S1A1D fractional derivative model could effectively describe the changes in the viscoelastic properties of HVMA over a wide frequency range, while the traditional Sigmoid function model had limitations.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Jingwei Xu, Wending Mai, Douglas H. Werner
Summary: This paper presents a new approach to handle complex temporal boundary systems, using a universal matrix formalism and coordinate transformation technique. It provides a simple and efficient solution to these problems and offers a deep insight into fundamental physics.
Article
Optics
Wilhelm Eschen, Lars Loetgering, Vittoria Schuster, Robert Klas, Alexander Kirsche, Lutz Berthold, Michael Steinert, Thomas Pertsch, Herbert Gross, Michael Krause, Jens Limpert, Jan Rothhardt
Summary: Microscopy with extreme ultraviolet radiation offers high-resolution imaging and excellent material contrast, making it ideal for studying complex structures and material composition.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Physics, Applied
Cheng-Peng Liang, Xiao Zhang, Long-Zhen Fan, Ming-Xing Zhou, ShuWai Leung, Ya-Nan Wang, Fei-Fei Li, Yin Poo
Summary: This paper presents a high-temperature-resistant frequency selective metasurface with wide-band low-backward scattering and efficient transmission. By utilizing specially arranged square rings and a triple-layer coupled-resonator spatial filter, significant reduction of radar cross section and wide-band transmission are achieved.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Mechanics
Zhiqiang Meng, Xu Gao, Hujie Yan, Mingchao Liu, Huijie Cao, Tie Mei, Chang Qing Chen
Summary: This paper presents a cage-shaped, self-folding mechanical metamaterial that exhibits multiple deformation modes and has tunable mechanical properties, providing multifunctional applications in various fields.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Hasan Murat Oztemiz, Semsettin Temiz
Summary: Sandwich panel composites have various applications and their mechanical behavior and performance depend on material properties and geometry. The load-carrying capacity of S-core composite sandwich panels increases with the increase of the core wall thickness, but decreases with the increase of the core height.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Yang Sun, Wei Zhang, Weipeng Hu, Mabao Liu
Summary: The study presents a novel computational framework to investigate the effect of graphene percolation network on the strength-ductility of graphene/metal composites. It utilizes the Cauchy's probabilistic model, the field fluctuation method, and the irreversible thermodynamics principle.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Elaheh Kazemi-Khasragh, Juan P. Fernandez Blazquez, David Garoz Gomez, Carlos Gonzalez, Maciej Haranczyk
Summary: This study explores group interaction modelling (GIM) and machine learning (ML) approaches for predicting thermal and mechanical properties of polymers. ML approach offers more reliable predictions compared to GIM, which is highly dependent on the accuracy of input parameters.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Yafei Yin, Shaotong Dong, Dong Wu, Min Li, Yuhang Li
Summary: This paper investigates a bending-induced instability in sandwiched composite structures, and establishes a phase diagram to predict its characteristics. The results are of great significance in understanding the physical mechanisms of bending instability and providing design guidelines for practical applications.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Dhairya R. Vyas, Sharen J. Cummins, Gary W. Delaney, Murray Rudman, Devang V. Khakhar
Summary: In this study, multiple collisions of granules on a substrate are analyzed using Collisional Smooth Particle Hydrodynamics (CSPH) to understand the influence of impact-induced deformation on subsequent collision dynamics. It is found that the collision dynamics are dependent on the impact location and the deformation caused by preceding impacts. The accuracy of three theoretical models is also evaluated by comparing their predictions with CSPH results, and it is discovered that these models are only useful for predicting collisions at the same location repeatedly.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Sneha B. Cheryala, Chandra S. Yerramalli
Summary: The effect of hybridization on the growth of interface crack along the fiber is predicted. The study shows an enhancement in the compressive splitting strength with hybridization due to the lateral confinement effect on the interfacial crack.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Xiang-Nan Li, Xiao-Bao Zuo, Liang Li, Jing-Han Liu
Summary: A multiscale mechanical model is proposed to quantitatively describe the macro-mechanical behavior of fiber reinforced concrete (FRC) based on its multiscale material compositions. The model establishes the stiffness and strength equations for each scale of FRC and demonstrates the influence of steel fiber parameters on the mechanical properties of FRC.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Vicente Ramirez-Luis, Hilario Hernandez-Moreno, Orlando Susarrey-Huerta
Summary: In this paper, a Multicell Thin-walled Method is developed for studying the stress distributions in multimaterial beams. This method accurately obtains complex stress fields while reducing the solution time and computational cost. Validation with the finite element method confirms the accuracy of the proposed method.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Yanfeng Zheng, Siyuan Li, Jingyao Zhang, Yaozhi Luo
Summary: This study proposes an enhanced simplified model based on finite particle method (FPM) to consider the link cross-sectional size and contact in Bennett linkages. The model introduces virtual beams and contact forces to accurately simulate the real-world behavior of Bennett linkages. The proposed method is effective for dynamic analysis of large-scale deployable Bennett linkages and shows great potential.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Viktoriya Pasternak, Heorhiy Sulym, Iaroslav M. Pasternak
Summary: This paper investigates anisotropic elastic, magnetoelectroelastic, and quasicrystal solids and presents their equations of time-harmonic motion and constitutive relations in a compact and unified form. A matrix approach is proposed to derive the 3D time-harmonic Green's functions for these materials. The effects of phason field dynamics on the phonon oscillations in quasicrystals are studied in detail. The paper provides a strict proof that the eigenvalues of the time-harmonic magnetoelectroelaticity problem are all positive. It also demonstrates the application of the obtained time-harmonic Green's functions in solving boundary value problems for these materials using the derived boundary integral equations.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Jan Tomec, Gordan Jelenic
Summary: This paper investigates the relationship between different formulations and contact-force models in beam-to-beam contact mechanics. It specifically addresses the recently developed mortar method and develops its variant based on the penalty method. The developed elements are tested using the same examples to provide an objective comparison in terms of robustness and computational cost.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Paulo Teixeira Goncalves, Albertino Arteiro, Nuno Rocha, Fermin Otero
Summary: This work presents a novel formulation of a 3D smeared crack model for unidirectional fiber-reinforced polymer composites based on a stress invariant approach for transverse yielding and failure initiation. The performance of the model is evaluated using monotonic and non-monotonic damage evolution, verified with single element tests and compared with experimental results.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Hanbin Yin, Yinji Ma, Xue Feng
Summary: This paper investigates the peeling behavior of a viscoelastic film bonded to a rigid substrate and establishes a theoretical peeling model. The study reveals three typical relationships between the peeling force and peeling velocity, which depend on the viscous dissipation within the film and the rate-dependent adhesion at the interface. Additionally, factors such as film thickness, interfacial toughness, and interfacial strength are identified as influencing the steady-state peeling force.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Peter Noe Poulsen, John Forbes Olesen
Summary: Finite Element Limit Analysis (FELA) is increasingly used to calculate the ultimate bearing capacity of structures made of ductile materials. This study presents a consistent and general weak formulation based on virtual work for both the lower and upper bound problem, ensuring uniqueness of the optimal solution. A plane element with linear stress variation and quadratic displacement field is introduced, showing good results for load level, stress distribution, and collapse mechanism even for coarse meshes in verification and reinforced concrete examples.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)