Article
Nanoscience & Nanotechnology
Pawan Kumar, Jason Lynch, Baokun Song, Haonan Ling, Francisco Barrera, Kim Kisslinger, Huiqin Zhang, Surendra B. Anantharaman, Jagrit Digani, Haoyue Zhu, Tanushree H. Choudhury, Clifford McAleese, Xiaochen Wang, Ben R. Conran, Oliver Whear, Michael J. Motala, Michael Snure, Christopher Muratore, Joan M. Redwing, Nicholas R. Glavin, Eric A. Stach, Artur R. Davoyan, Deep Jariwala
Summary: The study demonstrates the realization of excitonic metamaterials using atomically thin two-dimensional chalcogenide monolayers, enabling optical dispersion engineering and strong light-matter coupling. The engineered superlattice structures show evidence of exciton-polariton formation and high fidelity repeat units, paving the way for scalable designer optical metamaterials from atomically thin layers.
NATURE NANOTECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Gunho Moon, Seok Young Min, Cheolhee Han, Suk-Ho Lee, Heonsu Ahn, Seung-Young Seo, Feng Ding, Seyoung Kim, Moon-Ho Jo
Summary: A new type of atomically thin synaptic network is reported, where ultrasmall cells built with trilayer WS2 semiconductor act as gate-tunable photoactive synapses. This network can accurately modulate the conductance of the synaptic cells, allowing for potentiation and depression. It is shown that this device scheme can be realized in other 2D vdW semiconductors, providing implications for high-density parallel matrix computations in artificial neural networks.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Liping Liao, Evgeniya Kovalska, Jakub Regner, Qunliang Song, Zdenek Sofer
Summary: This review paper analyzes the use of van der Waals thin films derived from 2D materials in the advancement of thin-film electronics and optoelectronic devices. It highlights the superior properties and stability of inorganic nanomaterials that can be solution-processed, emphasizing the importance of solution-based processing. The challenges and potential of scalable 2D vdW thin films in driving advancements in electronics and optoelectronics are discussed.
Article
Mathematics, Applied
Xinfu Chen, Huiqiang Jiang, Guoqing Liu
Summary: We study the steady states of the fourth-order thin-film equation with van der Waals force in a bounded domain, considering the mass constraint. This leads to a singular elliptic equation for the thickness with an unknown pressure term. By analyzing a second-order nonlinear ordinary differential equation, we prove the existence of infinitely many radially symmetric solutions. Additionally, we perform rigorous asymptotic analysis to identify the blow-up limit when the steady state is close to a constant solution and the blow-down limit when the maximum of the steady state goes to infinity.
EUROPEAN JOURNAL OF APPLIED MATHEMATICS
(2022)
Article
Chemistry, Multidisciplinary
Yoon Seong Heo, Tae Wan Kim, Wooseok Lee, Jungseok Choi, Soyeon Park, Dong-Il Yeom, Jae-Ung Lee
Summary: Investigations on mesoscopic-scale stacking reconfigurations and their correlations with mechanical distortions are conducted in stacked van der Waals films. It is found that the distortions come from the transfer process or the extended impact of atomic reconstructions. Grain boundaries have a limited effect, while cracks cause inhomogeneous strain in stacked polycrystalline films.
Article
Physics, Applied
Huan Zheng, Can Huang, Fanrong Lin, Jiyu Fan, Hao Liu, Lei Zhang, Chunlan Ma, Caixia Wang, Yan Zhu, Hao Yang
Summary: In this paper, the growth of 2D CrTe2 single-crystal films on Al2O3 substrates using pulsed laser deposition is reported. The films exhibit a typical paramagnetic-ferromagnetic phase transition around 200 K, with a high Curie temperature. The saturation magnetization reaches 73.64 emu/g for a film thickness of 30 nm. Furthermore, electronic transport measurement confirms that the CrTe2 film displays metallic behavior in the temperature range of 5 K <= T <= 320 K with a resistivity of 1.5 m omega/cm. First-principles calculation reveals that the ferromagnetic ordering is mainly due to exchange coupling of adjacent Cr-spin t(2g) polarized electrons, and the metallic conductivity arises from p-d orbital hybridization between Cr and Te atoms. This work provides new insights for studying large-scale growth of 2D magnets and developing room temperature 2D magnet-based nanodevices.
APPLIED PHYSICS LETTERS
(2023)
Review
Optics
Christopher Gies, Alexander Steinhoff
Summary: 2D semiconductors and their heterostructures have become a flourishing research field, with experimental and theoretical developments progressing simultaneously and benefiting from each other. Theoretical advancements focus on exciton-plasma balance, excited-state optics, and laser physics.
LASER & PHOTONICS REVIEWS
(2021)
Article
Chemistry, Physical
Chao Ma, Dong Xu, Peiqi Wang, Zhaoyang Lin, Jingyuan Zhou, Chuancheng Jia, Jin Huang, Shengtao Li, Yu Huang, Xiangfeng Duan
Summary: The study presents an integrated pressure sensor array for spatially resolved pressure mapping, combining 2D MoS2 vdW-TFTs and PSR electrodes. The results show the potential application prospects of this system in the field of pressure sensor arrays.
Article
Chemistry, Physical
Yichun Du, Scott A. Bradford, Chongyang Shen, Tiantian Li, Xiaoyuan Bi, Dong Liu, Yuanfang Huang
Summary: This study developed novel analytical expressions and numerical approaches for calculating the interaction energy/force between particles and an air-water interface. The mechanisms of interaction before and after penetration were analyzed, explaining the repulsive forces that inhibit particle approaching and the significant repulsion observed after penetration. The findings of this study are critical for understanding and quantifying engineered processes involving particle manipulation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Zemin Zhang, Xu Chen, Rui Hao, Qingliang Feng, Erqing Xie
Summary: Efficient photocarrier collection is achieved by developing a novel Au/CuBi2O4 (CBO)/PtSe2 van der Waals heterojunction photocathode, which overcomes carrier losses at semiconductor-electrolyte and semiconductor-substrate interfaces. The composite photocathode demonstrates significantly enhanced performance, indicating the significance of Van der Waals heterojunctions in solar-fuel systems.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Yuanzhe Li, Shaowei Li, Pengpeng Bai, Wenpeng Jia, Quan Xu, Yonggang Meng, Liran Ma, Yu Tian
Summary: The relationship between friction and wettability was revealed to mainly be influenced by the competition between attractive van der Waals interactions and wettability-dependent repulsive hydration interaction, which determined adhesive interaction strength and dominated sliding energy dissipation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Longlong Shu, Zhiguo Wang, Renhong Liang, Zhen Zhang, Shengwen Shu, Changxin Tang, Fei Li, Ren-Kui Zheng, Shanming Ke, Gustau Catalan
Summary: This article proposes and demonstrates the use of van der Waals epitaxy as a successful strategy for measuring the flexoelectric coefficients of epitaxial thin films. The results indicate that van der Waals epitaxy is more suitable for studying flexoelectricity compared to conventional oxide-on-oxide epitaxy, as it is less affected by parasitic piezoelectricity.
Review
Chemistry, Multidisciplinary
Xiangdong Guo, Wei Lyu, Tinghan Chen, Yang Luo, Chenchen Wu, Bei Yang, Zhipei Sun, F. Javier Garcia de Abajo, Xiaoxia Yang, Qing Dai
Summary: 2D monolayers can be vertically stacked in van der Waals heterostructures to support a wide range of confined polaritons. This offers advantages in terms of controlling the constituent layers, stacking sequence, and twist angles. These heterostructures have extended the performance and functions of polaritons, and potential applications include nanophotonic integrated circuits.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Ziqi Li, Xujiang Chao, Andrew Balilonda, Wei Chen
Summary: Graphene shows great advantages in mid-infrared (MIR) regulation due to active control, precise regulation, and large modulation depth. However, current methods for preparing graphene films have limitations in large-scale production and application. This study proposes a simple mechanical adhesion method to prepare large-area van der Waals (vdW) graphene films without any additives. The obtained films possess desired thickness and comparable electrical conductivity, and exhibit excellent electrochemical activity and electro-optical regulation capability.
Article
Chemistry, Multidisciplinary
Joolee Son, Suhan Son, Pyeongjae Park, Maengsuk Kim, Zui Tao, Juhyun Oh, Taehyeon Lee, Sanghyun Lee, Junghyun Kim, Kaixuan Zhang, Kwanghee Cho, Takashi Kamiyama, Jun Hee Lee, Kin Fai Mak, Jie Shan, Miyoung Kim, Je-Geun Park, Jieun Lee
Summary: Ferromagnetism in two-dimensional materials, such as CrPS4, shows promise for the development of ultrathin spintronic devices with advanced functionalities. The observation of layer-dependent ferromagnetism in this air-stable van der Waals crystal suggests potential practical applications of van der Waals spintronics.
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
Neurosciences
Linghan Kong, Suhao Qiu, Yu Chen, Zhao He, Peiyu Huang, Qiang He, Ru-Yuan Zhang, Xi-Qiao Feng, Linhong Deng, Yao Li, Fuhua Yan, Guang-Zhong Yang, Yuan Feng
Summary: In this study, a custom-built head-worn electromagnetic actuator was used to accurately apply vibration to the brain inside a magnetic resonance imaging scanner. Results showed that brain regions experienced reduced blood flow with increasing vibration frequency, particularly within the default mode network.
Article
Chemistry, Physical
Wei-Zhi Huang, Bo Li, Xi-Qiao Feng
Summary: In this paper, a theoretical model is proposed to investigate the mechanobiological response of soft tissues undergoing stress-modulated growth. It is found that non-uniform stresses, which evolve with tissue growth, can produce up-down asymmetric surface morphologies. The study provides insights into the morphological changes of biological tissues under physiological and pathological conditions.
Article
Engineering, Mechanical
Zi-Long Zhao, Yi Rong, Yi Yan, Xi-Qiao Feng, Yi Min Xie
Summary: In this paper, a new subdomain-based parallel strategy is proposed for three-dimensional topology optimization, which significantly accelerates the optimization process through subdomain division, matrix calculation, and hard-kill algorithm. The strategy is integrated into an efficient and compact Python code, valid for design space with an arbitrary shape.
ACTA MECHANICA SINICA
(2023)
Article
Engineering, Mechanical
Ziyi Wang, Shengchuan Wu, Yu Lei, Hang Li, Chao Yu, Kun Zhou, Xiqiao Feng, Guozheng Kang
Summary: This paper presents a novel mesoscopic damage model to characterize the low-cycle fatigue damage evolution of an extruded AZ31 magnesium alloy, taking into account the effect of twinning. The damage caused by the slip bands-twin boundaries and slip bands-grain boundaries interactions is treated based on the Tanaka-Mura model and the Eshelby inclusion theory. The proposed damage model is able to reproduce the damage evolution processes and predict the crack initiation life within the twice error band.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Physics, Applied
Hui-Kai Zhang, Wei-Tong Chen, Shi-Hao Xu, Jian Wu, Bo Li, Xi-Qiao Feng
Summary: In this paper, an active strategy to manipulate topological phase transitions in elastic topological insulators is proposed. The method combines pneumatic actuation and liquid metals and achieves precise and fast control of topological phase transitions and elastic wave bandgap switching. The work also reveals the active spinning bulk-boundary effects and higher-order topological states in elastic topological insulators, showing the effectiveness and practicability of the proposed method. Additionally, the study specifies the differences between 1D edge and 0D corner higher-order states using information entropy theory.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Physical
Rui Han, Xi-Qiao Feng, Waldemar Vollmer, Paul Stoodley, Jinju Chen
Summary: Bacteria adapt the mechanical properties of their cell envelope, including cell wall stiffness, turgor, and cell wall tension and deformation, to grow and survive in harsh environments. This study quantified the mechanical properties and turgor of Staphylococcus epidermidis using theoretical modelling and experimental approaches. The results showed that high osmolarity leads to a decrease in both cell wall stiffness and turgor, and that the turgor change is associated with a change in bacterial cell viscosity. The study also found that cell wall tension is higher in deionized water and decreases with an increase in osmolality.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Shu-Yi Sun, Li -Yuan Zhang, Xindong Chen, Xi-Qiao Feng
Summary: In this paper, a biochemomechanical tensegrity model of cytoskeletons is established to study the spatiotemporal dynamics of cells. It is revealed that the interplay of internal active forces and chemical reactions may induce spontaneous oscillations of cells. This work provides a theoretical framework for studying the multiscale biochemomechanical coupling behaviors of cytoskeletons and a tool for simulating the spatiotemporal dynamics of cells under various physiological and pathological conditions.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2023)
Article
Engineering, Mechanical
Bo Peng, Chaochen Xu, Qingao Wang, Pei Zhao, Xiqiao Feng, Qunyang Li
Summary: Composite structures of 2D materials on elastic substrates have potential applications in flexible electronics. To understand the strength and failure behavior of the film/substrate interfaces, two graphene/polymer samples with different adhesion properties are tested. An improved shear-lag model is proposed to analyze the decohesion behavior, revealing the influence of three dimensionless parameters. This work provides an analytical solution for characterizing and optimizing the mechanical properties of thin film/polymer devices.
Article
Engineering, Biomedical
Yun-Ping Chen, Yue Shao, Peng-Cheng Chen, Kun Li, Jing-Yi Li, Jie Meng, Cheng-Lin Lv, Hao-Yu Liu, Cunjing Lv, Xi-Qiao Feng, Bo Li
Summary: This study reveals that human pluripotent stem cells can self-organize into cysts resembling human epiblast sac on soft elastic substrates without the need for a three-dimensional extracellular matrix overlay. The formation of these cysts is facilitated by the nesting of the soft substrate and requires the activation of the ROCK-Myosin II pathway. These findings highlight the interplay between the mechanical microenvironment and cells in tissue morphogenesis, offering a mechanics-based strategy for generating models of early human embryogenesis using stem cells.
ACTA BIOMATERIALIA
(2023)
Article
Engineering, Multidisciplinary
Jinshuai Bai, Gui-Rong Liu, Ashish Gupta, Laith Alzubaidi, Xi-Qiao Feng, YuanTong Gu
Summary: Our study reveals that physics-informed neural networks (PINN) are often local approximators after training. This led to the development of a novel physics-informed radial basis network (PIRBN), which maintains the local approximating property throughout the training process. Unlike deep neural networks, PIRBN consists of only one hidden layer and a radial basis activation function. Under appropriate conditions, we demonstrated that PIRBNs can converge to Gaussian processes using gradient descent methods. Furthermore, we investigated the training dynamics of PIRBN using the neural tangent kernel (NTK) theory and explored various initialization strategies. Numerical examples showed that PIRBN is more effective than PINN in solving nonlinear partial differential equations with high-frequency features and ill-posed computational domains. Moreover, existing PINN numerical techniques such as adaptive learning, decomposition, and different loss functions can be applied to PIRBN. The reproducible code for all numerical results is available at https://github.com/JinshuaiBai/PIRBN.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Yi Rong, Zi-Long Zhao, Xi-Qiao Feng, Jialing Yang, Yi Min Xie
Summary: This study investigates the formation, optimization, and evolution mechanisms of plant roots through biomechanical morphogenesis. The results reveal that the morphological evolutions of root systems are driven by maximizing the transport efficiency of water and nutrients, and are regulated by geotropism, hydrotropism, and growth inertia.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2023)
Review
Instruments & Instrumentation
Jiangping Xu, Yun Wang, Hector Gomez, Xiqiao Feng
Summary: This review provides an overview of computational modeling for vascular tumor growth, drug biotransport, and tumor response, as well as discusses potential strategies for improving drug effectiveness. It highlights the importance of further research in areas such as multiscale modeling, patient-specific parameters, and coupling of models with medical imaging technologies.
SMART MATERIALS AND STRUCTURES
(2023)
Article
Physics, Fluids & Plasmas
Kun Li, Cunjing Lv, Xi-Qiao Feng
Summary: The morphology and motion behavior of a cell are influenced by external stimuli and geometric confinement. The adhesion of vesicles is significantly influenced by the mean curvature of the substrate. The configuration of vesicles adhered to curved substrates is obtained theoretically and numerically simulated, and the role of curvature in adhesion and potential biological significances are discussed.
Article
Engineering, Chemical
Xiao Chen, Barathan Rajendran, Qi-Min Liu, Xi-Qiao Feng, K. B. Goh
Summary: This article presents a molecular theory to understand the permeation of multivalent ions through ion exchange membranes. Based on experimental data, the study analyzes the energetic tendencies and entropic preferences of divalent counterions, and quantitatively assesses their partitioning at both global and local levels. The findings show that the global partitioning of divalent counterions is similar in magnesium chloride and calcium chloride solutions, but at the local level, calcium ions have a higher preference for association with fixed charge groups compared to magnesium ions.
JOURNAL OF MEMBRANE SCIENCE
(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)
