Article
Materials Science, Ceramics
F. A. Huaman-Mamani, C. Jimenez-Holgado, M. Jimenez-Melendo
Summary: Three-phase alumina/YAG/YSZ composites were fabricated by a solid-state reaction route, resulting in dense bulk composites with fine equiaxed grains. Compressive mechanical tests at high temperatures showed a transition from brittle to ductile behavior, with grain boundary sliding as the main deformation mechanism in the ductile regime.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Engineering, Environmental
Yuan Li
Summary: This study measured the microstructure of samples extracted from a firn core in Greenland and identified critical values for microstructural parameters during the densification process. Empirical relationships between these microstructural parameters and density (depth) were suggested.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Wei Zhang, Xiaowei Wang, Zitong Kang, Tianyu Zhang, Yong Jiang, Xiancheng Zhang, Jianming Gong
Summary: This study investigated the cyclic softening and remaining creep behavior of different micro-regions of P92 steel weldment using EBSD and nanoindentation. The experimental results showed that the intercritical heat-affected zone was most sensitive to CFI loading, with changes in microstructure and decreased remaining creep life as the number of fatigue cycles increased.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Geochemistry & Geophysics
Chao Qi, David L. Goldsby
Summary: The study investigates the dislocation creep of ice through deformation experiments, finding that the characteristic exponent n of ice dislocation creep is influenced by grain size and strain rate, and providing two flow laws for modeling different types of ice.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Materials Science, Multidisciplinary
Zhengman Gu, Yang Shen, Ming Zhong, Cong Wang
Summary: The soft zone of Grade 91 steel has been precisely identified and characterized. The formation of fine martensites and rapid degradation contribute to excessive hardness reduction in the soft zone. Prolonging postweld heat treatment duration can enhance the soft zone width by transforming the microstructure into equiaxed ferrites and coarse precipitates.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
K. Mariappan, A. Nagesha
Summary: The paper presents a study on the creep-fatigue interaction behavior of simulated heat-affected zones (HAZs) of P91 steel weldment with different microstructures. Strain-controlled fatigue tests were conducted at 550 C, showing continuous cyclic softening under the creep-fatigue condition. Strain localization and interlinkage of subsurface creep cavities caused enhanced crack propagation, resulting in the lowest fatigue life in the inter-critical HAZ. The actual weldment failed in the interface between fine grain HAZ and inter-critical HAZ, largely governed by Type IV cracking.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Mechanics
Wei Zhang, Xiaowei Wang, Zitong Kang, Tianyu Zhang, Yong Jiang, Xiancheng Zhang, Jianming Gong
Summary: This study quantitatively evaluated the evolution of microstructure and micro-region properties of P92 steel weldments during interrupted fatigue tests and subsequent creep fracture using high-resolution characterization techniques. The results showed that the average grain size of the weld metal increased, and all regions exhibited three cyclic softening behavior during the fatigue process.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Materials Science, Multidisciplinary
Mingkun Jiang, Ying Han, Jiaqi Sun, Jiapeng Sun, Guoqing Zu, Hua Chen, Xu Ran
Summary: In this study, the evolution and strengthening effect of precipitates in 17Cr ferrite stainless steel during the creep process are investigated. The results show that Cu- and Nb-rich phases are formed during the creep process and have different impacts on the mechanical properties of the stainless steel.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Berzah Yavuzyegit, Egemen Avcu, Albert D. Smith, Jack M. Donoghue, David Lunt, Joseph D. Robson, Timothy L. Burnett, Joao Quinta da Fonseca, Philip J. Withers
Summary: By coupling an improved speckle patterning method enabling high resolution digital image correlation (HRDIC) at nanoscale strain resolution with a scanning electron microscope allowing autonomous experimental control and image acquisition during in situ tensile straining, the plastic deformation in AZ31 Mg alloy at the grain scale to significant plastic strains has been mapped for the first time. The proposed methodologies have the potential to characterise the real-time deformation behaviour of a wide range of engineering alloys at the grain scale at room and elevated temperatures.
Article
Chemistry, Physical
Rui Li, Binguo Fu, Yufeng Wang, Jingkun Li, Tianshun Dong, Guolu Li, Guixian Zhang, Jinhai Liu
Summary: X2CrNi12 ferritic stainless steel has a wide range of applications and its properties can be improved by cold-rolling and annealing treatment. Higher cold-rolling reductions promote grain orientation changes and reduce recrystallized grain size. Cold-rolling reduction also affects grain boundary distribution and texture strength, improving the steel's formability and corrosion resistance.
Article
Nanoscience & Nanotechnology
X. R. Zhang, G. X. Sun, W. Zai, Y. Jiang, Z. H. Jiang, S. Han, G. L. Bi, D. Q. Fang, J. S. Lian
Summary: The study found that the tensile strength of the extruded alloy decreases with increasing temperature or decreasing strain rate, while the elongation to failure tends to increase. Dynamic recrystallization occurs at lower strain rate, leading to decreased tensile strength and increased elongation to failure.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Hyun-Bin Jeong, Seok-Won Choi, Seok-Hyeon Kang, Young-Kook Lee
Summary: The new high-strength Fe-10Mn-3.5Si steel exhibits superplasticity at lower temperatures, showing different microstructural and deformation features compared to previous superplastic steels, and is suitable for practical applications.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Review
Materials Science, Multidisciplinary
Walaa Abd-Elaziem, Jingke Liu, Nasr Ghoniem, Xiaochun Li
Summary: High-temperature resistant materials are increasingly important in various industries, such as aerospace and automotive, for improving fuel efficiency and reducing CO2 emissions. Metal matrix nanocomposites (MMNCs) formed by adding nanoparticles to metals show promise in enhancing the structural and industrial applications of metals at high temperatures. This review provides a comprehensive understanding of how nanoparticles affect the creep behavior of metals and alloys, including the activation of different creep mechanisms and the contributions of threshold stress and load transfer. It also focuses on the specific influences of nanoparticles on the creep behavior of metals like aluminum, magnesium, titanium, zinc, and solder alloys, and concludes with future prospects in this field.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Guotong Zou, Lingying Ye, Jun Li, Zhixin Shen
Summary: The microstructure evolution and superplastic deformation mechanisms of a 2A97 Al-Cu-Li alloy with initial banded grains were studied. Uniaxial superplastic tensile tests were conducted and surface studies were carried out to investigate the deformation mechanisms. The results showed that the banded grains transformed into equiaxed grains during deformation, and the deformation process could be divided into two stages, with intragranular dislocation slip dominating in the primary stage and grain boundary sliding dominating in the secondary stage.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Qi Chen, Rong Hu, Shenbao Jin, Fei Xue, Gang Sha
Summary: This study investigated the irradiation-induced segregation of solutes at typical grain boundaries in Fe-Mn-Si steel, revealing that Mn and C segregate at grain boundaries and the extent of segregation depends on the characteristics of the boundaries, with the strongest segregation observed at random high-angle boundaries.
Article
Mechanics
H. Tran, Y. F. Gao, H. B. Chew
Summary: Introduced a novel field projection method to reconstruct the cohesive zone laws for steady-state fatigue crack growth. This method accurately extracts the crack-tip cohesive tractions and separations, addressing the challenge of unloading-reloading hysteresis in fatigue cycling.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2022)
Article
Nanoscience & Nanotechnology
Di Xie, Rui Feng, Peter K. Liaw, Hongbin Bei, Yanfei Gao
Summary: This study investigates the long-term tensile creep behavior of multicomponent equiatomic solid solution alloys with face-centered cubic crystal structures. It is found that dislocation creep is the dominant deformation mechanism for all the alloys studied. Despite variations in room-temperature strength and creep rate, the creep lifetime data for these alloys are similar.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Xue Wang, Yanfei Gao, Martin McDonnell, Zhili Feng
Summary: The article introduces the process of diffusion bonding and elimination of interfacial pores in solid-state bonding techniques. A new modeling framework of bonding fraction evolution is proposed, which is then applied to the Friction Stir Welding process, providing a figure of merit for industrial applications and FSW process design.
Article
Engineering, Mechanical
Biao Ding, Weili Ren, Yunbo Zhong, Xiaotan Yuan, Tianxiang Zheng, Zhe Shen, Yifeng Guo, Qiang Li, Jianchao Peng, Josip Brnic, Yanfei Gao, Peter K. Liaw
Summary: This study found that the generalized cyclic life saturation can be achieved through a dynamic equilibrium between straight single superdislocations and dislocation networks. The saturation phenomenon can be easily achieved by increasing local damage. The rate of change of straight single superdislocations is low in the range of large deformations.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Materials Science, Multidisciplinary
Di Xie, Wei Zhang, Zongyang Lyu, Peter K. Liaw, Huy Tran, Huck Beng Chew, Yujie Wei, Yang Ren, Yanfei Gao
Summary: Despite the superior mechanical properties of magnesium alloys, their potential applications are limited due to a lack of understanding of their failure mechanisms. This study utilizes synchrotron X-ray diffraction technique to analyze in situ strain mapping in a highly textured ZK60 Mg alloy. The results show good agreement with micromechanical modeling and reveal localized twin activities near the fatigue crack.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2022)
Article
Nanoscience & Nanotechnology
Huwen Ma, Yanchun Zhao, Xue Wang, Dong Ma, Yanfei Gao
Summary: Recent experiments have shown some success in improving the ductility of bulk metallic glass (BMG) composites containing metastable crystalline second-phase particles capable of TRIP-induced plasticity. The mechanisms behind these improvements are quantitatively investigated through micromechanical finite element simulations, revealing that for the metastable second phases to enhance the BMG composite ductility, the strength of the BMG matrix must be between that of soft austenite and hard martensite phases. This leads to effectively confining shear bands near the second phase, reducing maximum shear band strain, and thereby improving tensile ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Shunran Zhang, Weili Ren, Biao Ding, Yunbo Zhong, Xiaotan Yuan, Tianxiang Zheng, Zhe Shen, Yifeng Guo, Qiang Li, Chunmei Liu, Jianchao Peng, Josip Brnic, Yanfei Gao, Peter K. Liaw
Summary: This study determines the creep-fatigue cyclic-life (Nf) saturation effect for the DZ445 superalloy at 900 degrees C with different dwell times. The saturation effect is observed in mechanical response, fracture modes, and is related to the dynamic equilibrium of superdislocations and dislocation networks.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Shuying Chen, Jingbo Qiao, Haoyan Diao, Tengfei Yang, Jonathan Poplawsky, Weidong Li, Fanchao Meng, Yang Tong, Liang Jiang, Peter K. Liaw, Yanfei Gao
Summary: Improving creep resistance is often achieved by optimizing alloy design to create strong solid-solution strengthening and/or coherent precipitates for dislocation blockage. High-entropy alloys (HEAs), which are single-phase solid-solutions, exhibit creep properties comparable to precipitate-strengthened ferritic alloys. However, many HEAs develop incoherent second phases during long-term annealing, reducing their lifetime and limiting their use at high temperatures. This study demonstrates the exceptional creep resistance of a non-equiatomic Al0.3CoCrFeNi HEA, which has a much lower creep strain rate compared to the Cantor alloy and its subsets. The research reveals that the suppression of B2 precipitate phase during the early stage of creep deformation and the emergence of metastable and coherent L1(2) precipitates significantly contribute to creep strengthening.
Article
Materials Science, Multidisciplinary
Wenjian Yang, Ma Luo, Yanfei Gao, Xiqiao Feng, Jinju Chen
Summary: This paper proposes a computational model to study the mechanosensing mechanisms of fibroblast cells on elastic hydrogel substrates. By considering the sensing mechanisms of cells to the rigidity, deformation, and traction forces of the substrate and neighboring cells, the model predicts the effects of substrate stiffness and thickness on stress fiber formation, disassociation, and integrin density. The results show that cells can sense neighboring cells by deforming the underlying substrate, and collective cells have enhanced mechanosensing capacity. This model not only enhances our understanding of cell mechanosensing, but also has implications for the design of biomaterials for tissue engineering and wound healing.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
D. Xie, Z. H. Li, T. T. Sasaki, Y. F. Gao, Z. Y. Lyu, R. Feng, Y. Chen, K. An, H. B. Chew, T. Nakata, S. Kamado, K. Hono, P. K. Liaw
Summary: The low-alloyed Mg-Al-Ca-Mn alloy, as a new class of heat-treatable magnesium alloys, shows great engineering potential due to its excellent extrudability and high strength achieved by the dispersion of Guinier-Preston (G.P.) zones. In this study, in situ neutron diffraction measurements were conducted to investigate the cyclic deformation behavior of this alloy with and without G.P. zone dispersion. The relationship between macroscopic deformation behavior and microscopic response at the grain level, such as twinning and detwinning, was established.
Article
Thermodynamics
Tongxin Shan, Xiaoqing Zhu, Zhenpo Wang, Hsin Wang, Yanfei Gao, Lei Li
Summary: This study investigates the explosion dynamics of large-format Li-ion cells through experimental and numerical research. Overcharge-to-explosion tests on 40 Ah Li-ion cells reveal the presence of Von Neumann peaks on pressure curves, indicating supersonic shockwave velocity, and the experiment confirms detonation instead of deflagration. Furthermore, a geometric model is established to study the explosion behavior numerically, revealing the propagation mechanism of the shockwave. This study fills the research gap on thermal runaway of Li-ion cells, especially in extreme cases like fire and explosion, and provides valuable guidance for battery safety.
APPLIED THERMAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Zhongtao Li, Shihua Ma, Shijun Zhao, Weidong Zhang, Fei Peng, Qian Li, Tao Yang, Chia-Yi Wu, Daixiu Wei, Yi-Chia Chou, Peter K. Liaw, Yanfei Gao, Zhenggang Wu
Summary: By maximizing the volume misfits, a single-phase Ni-based FCC alloy with a superb yield strength (-1.05GPa) and good ductility (37%) is designed. This study provides two surprising and novel findings for single-phase FCC alloys: volume misfit is a good relevant indicator of kHP, and screw dislocations can contribute to strengthening once the solute-induced stress field reaches a critical value.
Article
Nanoscience & Nanotechnology
Zongyang Lyu, Zehao Li, Taisuke Sasaki, Yanfei Gao, Ke An, Yan Chen, Dunji Yu, Kazuhiro Hono, Peter K. Liaw
Summary: It is reported that interstitial metastable high entropy alloys (HEAs) can achieve a wide range of strength-ductility trade-offs through different annealing temperatures and times. The underlying mechanisms were investigated using in situ neutron diffraction, electron backscattered diffraction, and electron channel contrast imaging analyses. These techniques revealed that the phase transformation process can be tuned by various annealing processes, resulting in different degrees of load partitioning and sharing among different phases and grain families on the commensurate microstructural length scales. Therefore, the microstructures generated by thermal treatments and phase transformation from face-centered-cubic to hexagonal-close-packed phases can efficiently improve the ductility of the studied alloys.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Huwen Ma, Yanchun Zhao, Zhi Lyu, Xue Wang, Yuntian Zhu, Yanfei Gao
Summary: Using a sandwich structure as an example, this study demonstrates that the formation of dispersive shear bands on the surfaces of layered/gradient materials is caused by localized necking, rather than the previously believed hetero-deformation-induced (HDI) strengthening mechanism. Unlike the commonly observed necking mode, the layered structure exhibits necking at intermediate wavelengths during tensile deformation, resulting in larger ductility. These findings not only explain recent experimental observations, but also offer an alternative approach to understanding and improving the ductility in heterostructured materials.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2023)
Article
Nanoscience & Nanotechnology
Qingqing Ding, Yongkang Li, Jie Ouyang, Xiao Wei, Ze Zhang, Yanfei Gao, Hongbin Bei
Summary: This study systematically investigates the effect of stacking fault energy (SFE) on the mechanical properties and deformation mechanisms of NiCo-based alloys. The results show that SFE has little effect on yield strength but affects the ultimate tensile strength and elongation to fracture. At lower temperatures, a lower SFE is associated with a higher ultimate tensile strength.
MATERIALS TODAY NANO
(2023)
Article
Materials Science, Multidisciplinary
Yanzheng Wang, Qian Wu, Yiran Tian, Guoliang Huang
Summary: This paper proposes the microstructure design of an odd plate and investigates the directional wave energy amplification and the presence of interface waves in odd plates through theoretical and numerical analysis. The research findings contribute to the understanding of elastic behavior in 2D non-Hermitian systems.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
F. Greco, D. Codony, H. Mohammadi, S. Fernandez-Mendez, I. Arias
Summary: This study overcomes the difficulty of harnessing the flexoelectric effect by designing multiscale metamaterials. Through topology optimization calculations, we obtain optimal structures for various apparent piezoelectric properties and find that low-area-fraction lattices are the preferred choice. The results show competitive estimations of apparent piezoelectricity compared to reference materials such as quartz and PZT ceramics.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Xiaoxuan Zhang, Tryaksh Gupta, Zhenlin Wang, Amalie Trewartha, Abraham Anapolsky, Krishna Garikipati
Summary: This study presents a computational framework for coupled electro-chemo-(nonlinear) mechanics at the particle scale in solid-state batteries, including interfacial fracture, degradation in charge transfer, and stress-dependent kinetics. The discontinuous finite element method allows for arbitrary particle shapes and geometries.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Chengguan Zhang, Xavier Balandraud, Yongjun He
Summary: The coexistence of both austenite and martensite is a common characteristic in Shape Memory Alloys (SMAs). The multiple-domain microstructures, consisting of austenite, martensite twins, and individual martensite variants, evolve collectively during the phase transformation, affecting the material's macroscopic response. This paper presents an experimentally observed interface consisting of five domains in a Ni-Mn-Ga single-crystal, and analyzes the effects of thermal loading path and material initial state on the domain pattern formation.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Shaobao Liu, Haiqian Yang, Guang-Kui Xu, Jingbo Wu, Ru Tao, Meng Wang, Rongyan He, Yulong Han, Guy M. Genin, Tian Jian Lu, Feng Xu
Summary: The balance between stress and adhesion plays a crucial role in governing the behaviors of adherent cells, such as cell migration. In certain microenvironments, such as tumor, variations in hydrostatic pressure can significantly impact cell volume and adhesion, which in turn affects cell behavior.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Xun Xiong, Qinglei Zeng, Yonghuan Wang, Ying Li
Summary: In this work, the authors investigate the possibility of enhancing the resistance to crack growth in brittle materials through microstructure design. They establish a computational framework to simulate crack propagation and characterize fracture energy. The effects of different types of voids on toughening mechanisms are explored, and the critical conditions for embrittlement-toughening transition are identified. The study also discusses the difference between void toughening in brittle and ductile materials, and extends the toughening strategy to nacre-like materials.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Huan Wang, Yong-Quan Liu, Jiu-Tao Hang, Guang-Kui Xu, Xi-Qiao Feng
Summary: This study establishes a cytoarchitectural model to accurately capture the buckling and postbuckling behaviors of epithelia under fast compression. The stress evolution of epithelia is divided into three stages: loading, phase transition, and stress recovery. The postbuckling process is governed by the active tension generated by the actomyosin network. The study also proposes a minimal model that predicts the flattening time and stress recovery extent as functions of applied strain or strain rate, in agreement with simulations and experiments.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Lei Liu, Hao Liu, Yuming He, Dabiao Liu
Summary: This study investigates the mechanics and topologically complex morphologies of twisted rubber filaments using a combination of experiment and finite strain theory. A finite strain theory for hyperelastic filaments under combined tension, bending, and torsion has been established, and an experimental and theoretical morphological phase diagram has been constructed. The results accurately determine the configuration and critical points of phase transitions, and the theoretical predictions agree closely with the measurements.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Abhishek Painuly, Kunnath Ranjith, Avinash Gupta
Summary: This paper analyzes the interfacial waves caused by frictional slipping and studies their dispersion relation and wave modes. By studying the slip waves in a geophysical model, the surface wave dispersion phenomenon is explored, and an alternative explanation is proposed.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Houlin Xu, Joshua Vievering, Hoang T. Nguyen, Yupeng Zhang, Jia-Liang Le, Zdenek P. Bazant
Summary: Motivated by the extraordinary strength of nacre, this study investigated the probabilistic distribution of fishnet strength using Monte Carlo simulations and found that previous analytical solutions are not applicable for fishnets with a large number of links. By approximating large-scale fishnets as a continuum with cracks or holes, the study revealed that the strength distribution follows the Weibull distribution. This new model has significance for optimizing the strength-weight ratio in printed material structures.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Souhayl Sadik, Arash Yavari
Summary: This paper revisits the mathematical foundations of nonlinear viscoelasticity and studies the geometry of viscoelastic deformations. It discusses the decomposition of the deformation gradient into elastic and viscous distortions and concludes that the viscous distortion can only be a two-point tensor. The governing equations of nonlinear viscoelasticity are derived and the constitutive and kinetic equations for various types of viscoelastic solids are discussed.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Wen Cheng, Hongkuan Zhang, Yu Wei, Kun Wang, Gengkai Hu
Summary: In this study, we propose a phenomenon similar to Thouless pumping for a continuous in-plane elastic system, enabling topological transport of elastic waves through spatial modulation of material elasticity. By incorporating specific lattice microstructures, termed pentamode materials, precise and robust control over elastic wave propagation is achieved.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Linda Werneck, Mertcan Han, Erdost Yildiz, Marc-Andre Keip, Metin Sitti, Michael Ortiz
Summary: We have developed a simple model that describes the ionic current through neuronal membranes by considering the membrane potential and extracellular ion concentration. The model combines a simplified Poisson-Nernst-Planck model of ion transport through individual ion channels with channel activation functions calibrated from experimental data. The calibrated model accounts for the transport of calcium, sodium, potassium, and chloride and shows remarkable agreement with experimentally measured current-voltage curves for human neural cells.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
