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Journal articles on the topic 'Structure and dynamics of materials'

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Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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1

Bentley, Cameron L., Minkyung Kang, and Patrick R. Unwin. "Nanoscale Structure Dynamics within Electrocatalytic Materials." Journal of the American Chemical Society 139, no. 46 (October 23, 2017): 16813–21. http://dx.doi.org/10.1021/jacs.7b09355.

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2

CHADWICK, A., and S. SAVIN. "Structure and dynamics in nanoionic materials." Solid State Ionics 177, no. 35-36 (November 30, 2006): 3001–8. http://dx.doi.org/10.1016/j.ssi.2006.07.046.

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3

Hennet, Louis, Shankar Krishnan, Irina Pozdnyakova, Viviana Cristiglio, Gabriel J. Cuello, Henry E. Fischer, Aleksei Bytchkov, et al. "Structure and dynamics of levitated liquid materials." Pure and Applied Chemistry 79, no. 10 (January 1, 2007): 1643–52. http://dx.doi.org/10.1351/pac200779101643.

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Aerodynamic levitation is a simple way to suspend samples which can be heated with CO2 lasers. The advantages of this technique are the simplicity and compactness of the device, making it possible to integrate the device easily into different kinds of experiments. In addition, all types of sample can be used, including metals and oxides. The integration of this technique at synchrotron and neutron sources provides powerful tools to study molten materials.

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4

Wilson, Mark. "Structure and dynamics in network-forming materials." Journal of Physics: Condensed Matter 28, no. 50 (October 25, 2016): 503001. http://dx.doi.org/10.1088/0953-8984/28/50/503001.

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5

Dove, Martin T. "Structure and Dynamics — An Atomic View of Materials." Materials Today 6, no. 6 (June 2003): 59. http://dx.doi.org/10.1016/s1369-7021(03)00639-4.

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6

Reddy, S. Y., and Vikram K. Kuppa. "Molecular Dynamics Simulations of Organic Photovoltaic Materials: Structure and Dynamics of Oligothiophene." Journal of Physical Chemistry C 116, no. 28 (July 3, 2012): 14873–82. http://dx.doi.org/10.1021/jp212548r.

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7

Mozur, Eve M., and James R. Neilson. "Cation Dynamics in Hybrid Halide Perovskites." Annual Review of Materials Research 51, no. 1 (July 26, 2021): 269–91. http://dx.doi.org/10.1146/annurev-matsci-080819-012808.

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Hybrid halide perovskite semiconductors exhibit complex, dynamical disorder while also harboring properties ideal for optoelectronic applications that include photovoltaics. However, these materials are structurally and compositionally distinct from traditional compound semiconductors composed of tetrahedrally coordinated elements with an average valence electron count of silicon. The additional dynamic degrees of freedom of hybrid halide perovskites underlie many of their potentially transformative physical properties. Neutron scattering and spectroscopy studies of the atomic dynamics of these materials have yielded significant insights into their functional properties. Specifically, inelastic neutron scattering has been used to elucidate the phonon band structure, and quasi-elastic neutron scattering has revealed the nature of the uncorrelated dynamics pertaining to molecular reorientations. Understanding the dynamics of these complex semiconductors has elucidated the temperature-dependent phase stability and origins of defect-tolerant electronic transport from the highly polarizable dielectric response. Furthermore, the dynamic degrees of freedom of the hybrid perovskites provide additional opportunities for application engineering and innovation.

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8

Peng, Yan, Su Fen Wang, Yang Zhang, and Ya Nan Gao. "Simulation and Application of Molecular Dynamics in Materials Science." Advanced Materials Research 572 (October 2012): 232–36. http://dx.doi.org/10.4028/www.scientific.net/amr.572.232.

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t was summarized the simulate of materials and application of molecular dynamics, it expounded the molecular dynamics to solve the problem of the basic idea, principle, modeling methods and its simulating methods, and discussed the typical organization performance control technology, the development for simulation aspects and its problems existing. Especially focused on the molecular dynamics system its dynamic simulation in materials microscopic-sized, attached the application of macro characteristics and micro structure. Through the research and analysis, it gave the main application direction in solving steel organization performance control by the method of molecular dynamics, faced with the problem and its future development trend.

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9

Mayumi, Koichi, and Kohzo Ito. "Structure and dynamics of polyrotaxane and slide-ring materials." Polymer 51, no. 4 (February 2010): 959–67. http://dx.doi.org/10.1016/j.polymer.2009.12.019.

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10

Nishi, Toshio, So Fujinami, Dong Wang, Hao Liu, and Ken Nakajima. "Structure and dynamics of polymeric materials in nano-scale." Chinese Journal of Polymer Science 29, no. 1 (November 3, 2010): 43–52. http://dx.doi.org/10.1007/s10118-010-1023-5.

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11

Miyanaga, Takafumi. "Local Structure and Dynamics of Functional Materials Studied by X-ray Absorption Fine Structure." Symmetry 13, no. 8 (July 22, 2021): 1315. http://dx.doi.org/10.3390/sym13081315.

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X-ray absorption fine structure (XAFS) is a powerful technique used to analyze a local electronic structure, local atomic structure, and structural dynamics. In this review, I present examples of XAFS that apply to the local structure and dynamics of functional materials: (1) structure phase transition in perovskite PbTiO3 and magnetic FeRhPd alloys; (2) nano-scaled fluctuations related to their magnetic properties in Ni–Mn alloys and Fe/Cr thin films; and (3) the Debye–Waller factors related to the chemical reactivity for catalysis in polyanions and ligand exchange reaction. This study shows that the local structure and dynamics are related to the characteristic function of the materials.

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12

Halsey, Thomas C. "Electrorheological fluids — structure and dynamics." Advanced Materials 5, no. 10 (October 1993): 711–18. http://dx.doi.org/10.1002/adma.19930051004.

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13

Han, Koohee, Gašper Kokot, Shibananda Das, Roland G. Winkler, Gerhard Gompper, and Alexey Snezhko. "Reconfigurable structure and tunable transport in synchronized active spinner materials." Science Advances 6, no. 12 (March 2020): eaaz8535. http://dx.doi.org/10.1126/sciadv.aaz8535.

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Ensembles of actuated colloids are excellent model systems to explore emergent out-of-equilibrium structures, complex collective dynamics, and design rules for the next generation materials. Here, we demonstrate that ferromagnetic microparticles suspended at an air-water interface and energized by an external rotating magnetic field spontaneously form dynamic ensembles of synchronized spinners in a certain range of the excitation field parameters. Each spinner generates strong hydrodynamic flows, and collective interactions of the multiple spinners promote a formation of dynamic lattices. On the basis of experiments and simulations, we reveal structural transitions from liquid to nearly crystalline states in this novel active spinner material and demonstrate that dynamic spinner lattices are reconfigurable, capable of self-healing behavior and that the transport of embedded inert cargo particles can be remotely tuned by the parameters of the external excitation field. Our findings provide insights into the behavior of active spinner materials with reconfigurable structural order and tunable functionalities.

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14

Puthoff, Jonathan B. "Friction Dynamics of Geckolike Materials." MRS Advances 1, no. 40 (2016): 2769–75. http://dx.doi.org/10.1557/adv.2016.535.

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ABSTRACTThe interface between the adhesive toes of geckos and a substrate consists of an array of regularly sized, densely packed, and elastically coupled nanoscopic contacts. The velocity-dependent friction exhibited by this system hints at a convolution of various material and structural effects. We explore the dynamics of frictional sliding in these materials using models based on arrays of coupled masses driven by external forces that can become pinned and unpinned to a potential energy landscape. The model system is driven at normalized velocities spanning 6 orders of magnitude, and the output of this model captures both the low-V and high-V behavior of the actual gecko materials. We explore modifications to the essential model that incorporate features more representative of the structure and behavior of the natural gecko system. These results have implications in the design of materials with custom frictional properties.

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15

D’Ambrogio, Walter, and Annalisa Fregolent. "Use of experimental dynamic substructuring to predict the low frequency structural dynamics under different boundary conditions." Mathematics and Mechanics of Solids 23, no. 11 (August 28, 2017): 1444–55. http://dx.doi.org/10.1177/1081286517727147.

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Flexible structural components can be attached to the rest of the structure using different types of joints. For instance, this is the case of solar panels or array antennas for space applications that are joined to the body of the satellite. To predict the dynamic behaviour of such structures under different boundary conditions, such as additional constraints or appended structures, it is possible to start from the frequency response functions in free-free conditions. In this situation, any structure exhibits rigid body modes at zero frequency. To experimentally simulate free-free boundary conditions, flexible supports such as soft springs are typically used: with such arrangement, rigid body modes occur at low non-zero frequencies. Since a flexible structure exhibits the first flexible modes at very low frequencies, rigid body modes and flexible modes become coupled: therefore, experimental frequency response function measurements provide incorrect information about the low frequency dynamics of the free-free structure. To overcome this problem, substructure decoupling can be used, that allows us to identify the dynamics of a substructure (i.e. the free-free structure) after measuring the frequency response functions on the complete structure (i.e. the structure plus the supports) and from a dynamic model of the residual substructure (i.e. the supporting structure). Subsequently, the effect of additional boundary conditions can be predicted using a frequency response function condensation technique. The procedure is tested on a reduced scale model of a space solar panel.

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16

Blasie, J. Kent, and Peter Timmins. "Neutron Scattering in Structural Biology and Biomolecular Materials." MRS Bulletin 24, no. 12 (December 1999): 40–47. http://dx.doi.org/10.1557/s0883769400053719.

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The substantial power of both elastic and inelastic neutron-scattering techniques for the investigation of the structure and dynamics of biological systems and related biomolecular-based materials—as with soft matter in the previous article by Lindner and Wignall—arises primarily from the essentially isomorphous nature of the substitution of deuterium for selected hydrogen atoms in these systems, coupled with the exquisite sensitivity of neutron scattering to this isotopic substitution. Since these systems are comprised of large macromolecules and supramolecular assemblies thereof, their essential structures and dynamics extend from the atomic scale up to very large length scales of the Order of 101–104 Å. Hence neutron sources and neutron-scattering spectrometers optimized for longer wavelength (or “cold”) thermal neutrons are necessary in order to most effectively address the structure and dynamics at the longer length scales inherent to these Systems.The large majority of previous neutron-scattering experiments on biological systems have been performed with reactor neutron sources. Some of the more significant of these are briefly summarized in the following sections. They may be categorized in terms of the nature of the intermolecular order, both orientational and positional, within the System of interest and either the elastic neutron-scattering technique employed to investigate their time-averaged structures or the inelastic neutron-scattering technique employed to investigate their dynamics.

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17

Farrell, Brian F., Petros J. Ioannou, Javier Jiménez, Navid C. Constantinou, Adrián Lozano-Durán, and Marios-Andreas Nikolaidis. "A statistical state dynamics-based study of the structure and mechanism of large-scale motions in plane Poiseuille flow." Journal of Fluid Mechanics 809 (November 9, 2016): 290–315. http://dx.doi.org/10.1017/jfm.2016.661.

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The perspective of statistical state dynamics (SSD) has recently been applied to the study of mechanisms underlying turbulence in a variety of physical systems. An SSD is a dynamical system that evolves a representation of the statistical state of the system. An example of an SSD is the second-order cumulant closure referred to as stochastic structural stability theory (S3T), which has provided insight into the dynamics of wall turbulence, and specifically the emergence and maintenance of the roll/streak structure. S3T comprises a coupled set of equations for the streamwise mean and perturbation covariance, in which nonlinear interactions among the perturbations has been removed, restricting nonlinearity in the dynamics to that of the mean equation and the interaction between the mean and perturbation covariance. In this work, this quasi-linear restriction of the dynamics is used to study the structure and dynamics of turbulence in plane Poiseuille flow at moderately high Reynolds numbers in a closely related dynamical system, referred to as the restricted nonlinear (RNL) system. Simulations using this RNL system reveal that the essential features of wall-turbulence dynamics are retained. Consistent with previous analyses based on the S3T version of SSD, the RNL system spontaneously limits the support of its turbulence to a small set of streamwise Fourier components, giving rise to a naturally minimal representation of its turbulence dynamics. Although greatly simplified, this RNL turbulence exhibits natural-looking structures and statistics, albeit with quantitative differences from those in direct numerical simulations (DNS) of the full equations. Surprisingly, even when further truncation of the perturbation support to a single streamwise component is imposed, the RNL system continues to self-sustain turbulence with qualitatively realistic structure and dynamic properties. RNL turbulence at the Reynolds numbers studied is dominated by the roll/streak structure in the buffer layer and similar very large-scale structure (VLSM) in the outer layer. In this work, diagnostics of the structure, spectrum and energetics of RNL and DNS turbulence are used to demonstrate that the roll/streak dynamics supporting the turbulence in the buffer and logarithmic layer is essentially similar in RNL and DNS.

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18

Sarkar, Sunetra, Kartik Venkatraman, and B. Dattaguru. "Dynamics of Flexible Structures With Nonlinear Joints." Journal of Vibration and Acoustics 126, no. 1 (January 1, 2004): 92–100. http://dx.doi.org/10.1115/1.1596548.

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The focus of the present study is to use a technique based on Fourier approximation and Galerkin error minimization to determine periodic solutions of nonlinear jointed flexible structures, and study the effect of joint nonlinearity on the global dynamics of an otherwise linear flexible structure. Results presented here show that the Fourier-Galerkin algorithm is a fast tool for computing periodic motion of nonlinear dynamic systems as compared to time-integration, and the effect of nonlinear joints on the dynamics of an otherwise linear flexible structure modeled as a multi degree of freedom system can be significant.

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19

SAKAI, Yasuhiro, and Kohzo ITO. "Structure, Dynamics, and Application of Cyclodextrin-based Slide-ring Materials." Oleoscience 13, no. 3 (2013): 111–16. http://dx.doi.org/10.5650/oleoscience.13.111.

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20

Richert, Ranko. "Perspective: Nonlinear approaches to structure and dynamics of soft materials." Journal of Chemical Physics 149, no. 24 (December 28, 2018): 240901. http://dx.doi.org/10.1063/1.5065412.

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21

Wilson, Mark. "Structure, dynamics and multiple length-scales in network-forming materials." Journal of Statistical Mechanics: Theory and Experiment 2016, no. 7 (July 7, 2016): 074010. http://dx.doi.org/10.1088/1742-5468/2016/07/074010.

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22

Guégan, Régis, Emmanuel Veron, Lydie Le Forestier, Makoto Ogawa, and Sylvian Cadars. "Structure and Dynamics of Nonionic Surfactant Aggregates in Layered Materials." Langmuir 33, no. 38 (September 12, 2017): 9759–71. http://dx.doi.org/10.1021/acs.langmuir.7b01831.

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23

CHAUDHURI, ABHISHEK, DEBASISH CHAUDHURI, and SURAJIT SENGUPTA. "INDUCED INTERFACES AT NANOSCALES: STRUCTURE AND DYNAMICS." International Journal of Nanoscience 04, no. 05n06 (October 2005): 995–99. http://dx.doi.org/10.1142/s0219581x05003966.

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We show how interfaces may be induced in materials using external fields. The structure and the dynamics of these interfaces may then be manipulated externally to achieve desired properties. We discuss three types of such interfaces: an Ising interface in a nonuniform magnetic field, a solid–liquid interface and an interface between a solid and a smectic like phase. In all of these cases we explicitly show how small size, leading to atomic-scale discreteness and stiff constraints produce interesting effects which may have applications in the fabrication of nanostructured materials.

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24

Roland, C. M., and K. L. Ngai. "Constraint dynamics and chemical structure." Journal of Non-Crystalline Solids 172-174 (September 1994): 868–75. http://dx.doi.org/10.1016/0022-3093(94)90591-6.

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25

Qin, Zhaoye, Delin Cui, Shaoze Yan, and Fulei Chu. "Application of 2D finite element model for nonlinear dynamic analysis of clamp band joint." Journal of Vibration and Control 23, no. 9 (August 3, 2015): 1480–94. http://dx.doi.org/10.1177/1077546315594065.

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Due to frictional slippage between the joint components, clamp band joints may generate nonlinear stiffness and friction damping, which will affect the dynamics of the joint structures. Accurate modeling of the frictional behavior in clamp band joints is crucial for reliable estimation of the joint structure dynamics. While the finite element (FE) method is a powerful tool to analyze structures assembled with joints, it is computationally expensive and inefficient to perform transient analyses with three-dimensional (3D) FE models involving contact nonlinearity. In this paper, a two-dimensional (2D) FE model of much more efficiency is applied to investigate the dynamics of a clamp band jointed structure subjected to longitudinal base excitations. Prior to dynamic analyses, the sources of the model inaccuracy are determined, upon which a two-step model updating technique is proposed to improve the accuracy of the 2D model in accordance with the quasi-static test data. Then, based on the updated 2D model, the nonlinear influence of the clamp band joint on the dynamic response of the joint structure is investigated. Sine-sweep tests are carried out to validate the updated 2D FE model. The FE modeling and updating techniques proposed here can be applied to other types of structures of cyclic symmetry to develop accurate model with high computational efficiency.

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26

Kajiwara, Itsuro, and Ryo Tsuchiya. "Multidisciplinary Optimization of Smart Structure with Characteristic Variation for Vibration Suppression(International Workshop on Smart Materials and Structural Systems, W03 Jointly organized by Material & Processing Division, Material & Mechanics Division, Dynamics & Control Division and Space Engineering Division.)." Reference Collection of Annual Meeting 2004.8 (2004): 276–77. http://dx.doi.org/10.1299/jsmemecjsm.2004.8.0_276.

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27

Kishimoto, Satoshi, and Norio Shinya. "Fabrication of Metallic Closed Cellular Materials for Multi-functional Materials(International Workshop on Smart Materials and Structural Systems, W03 Jointly organized by Material & Processing Division, Material & Mechanics Division, Dynamics & Control Division and Space Engineering Division.)." Reference Collection of Annual Meeting 2004.8 (2004): 314–15. http://dx.doi.org/10.1299/jsmemecjsm.2004.8.0_314.

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28

Lee, In. "Application of Smart Materials to Improve the Structural Performance(International Workshop on Smart Materials and Structural Systems, W03 Jointly organized by Material & Processing Division, Material & Mechanics Division, Dynamics & Control Division and Space Engineering Division.)." Reference Collection of Annual Meeting 2004.8 (2004): 272–73. http://dx.doi.org/10.1299/jsmemecjsm.2004.8.0_272.

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29

van de Streek, Jacco, Kristoffer Johansson, and Xiaozhou Li. "Computational Pharmaceutical Materials Science: Beyond Static Structures." Acta Crystallographica Section A Foundations and Advances 70, a1 (August 5, 2014): C1541. http://dx.doi.org/10.1107/s2053273314084587.

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The five Crystal-Structure Prediction (CSP) Blind Tests have shown that molecular-mechanics force fields are not accurate enough for crystal structure prediction[1]. The first--and only--method to successfully predict all four target crystal structures of one of the CSP Blind Tests was dispersion-corrected Density Functional Theory (DFT-D), and this is what we use for our work. However, quantum-mechanical methods (such as DFT-D), are too slow to allow simulations that include the effects of time and temperature, certainly for the size of molecules that are common in pharmaceutical industry. Including the effects of time and temperature therefore still requires molecular dynamics (MD) with less accurate force fields. In order to combine the accuracy of the successful DFT-D method with the speed of a force field to enable molecular dynamics, our group uses Tailor-Made Force Fields (TMFFs) as described by Neumann[2]. In Neumann's TMFF approach, the force field for each chemical compound of interest is parameterised from scratch against reference data from DFT-D calculations; in other words, the TMFF is fitted to mimic the DFT-D energy potential. Parameterising a dedicated force field for each individual compound requires an investment of several weeks, but has the advantage that the resulting force field is more accurate than a transferable force field. Combining crystal-structure prediction with DFT-D followed by molecular dynamics with a tailor-made force field allows us to calculate e.g. the temperature-dependent unit-cell expansion of each predicted polymorph, as well as possible temperature-dependent disorder. This is relevant for example when comparing the calculated X-ray powder diffraction patterns of the predicted crystal structures against experimental data.

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30

Hong, Lin. "A New Method for Mechanics Analysis of Bar Structure Materials." Advanced Materials Research 321 (August 2011): 3–6. http://dx.doi.org/10.4028/www.scientific.net/amr.321.3.

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A method for mechanics analysis of bar structure materials has been presented in the paper. The method is based on the theory of kinematics, dynamics, and programming techniques. After deriving of relevant equations, detail analysis about positions, velocities, accelerations, and angles, angular velocities, angular accelerations of bars as well as other parameters relevant to bar structure materials to be searched can be obtained in the paper. Relationships between various parameters and variables of bar structures have been derived according to different working states of bars. The method put forward in the paper is a feasible and high efficient method for mechanics analysis of bar structure materials in the design of mechanism.

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31

Wang, Ying, and Bin Sun. "A Computational Method for Dynamic Analysis of Deployable Structures." Shock and Vibration 2020 (June 27, 2020): 1–10. http://dx.doi.org/10.1155/2020/2971784.

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A computational method is developed to study the dynamics of lightweight deployable structures during the motion process without regard to damping. Theory and implementation strategy of the developed method are given in this study. As a case study, the motion process of a bar-joint structure and a ring array scissor-type structure was simulated under external dynamic loading. In order to verify the effectiveness of the method, the simulation results are compared with the results predicted by the authenticated multibody system dynamics and simulation program. It shows that the method is effective to dynamic analysis of deployable structures no matter the structures are rigid or elastic. Displacement, velocity, and acceleration for the entire deployable structures during the motion process can be computed, as well as strain if the deployable structure is elastic.

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32

Liang, Huiqi, Wenbo Xie, Peizi Wei, Dehao Ai, and Zhiqiang Zhang. "Identification of Dynamic Parameters of Pedestrian Walking Model Based on a Coupled Pedestrian–Structure System." Applied Sciences 11, no. 14 (July 12, 2021): 6407. http://dx.doi.org/10.3390/app11146407.

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As human occupancy has an enormous effect on the dynamics of light, flexible, large-span, low-damping structures, which are sensitive to human-induced vibrations, it is essential to investigate the effects of pedestrian–structure interaction. The single-degree-of-freedom (SDOF) mass–spring–damping (MSD) model, the simplest dynamical model that considers how pedestrian mass, stiffness and damping impact the dynamic properties of structures, is widely used in civil engineering. With field testing methods and the SDOF MSD model, this study obtained pedestrian dynamics parameters from measured data of the properties of both empty structures and structures with pedestrian occupancy. The parameters identification procedure involved individuals at four walking frequencies. Body frequency is positively correlated to the walking frequency, while a negative correlation is observed between the body damping ratio and the walking frequency. The test results further show a negative correlation between the pedestrian’s frequency and his/her weight, but no significant correlation exists between one’s damping ratio and weight. The findings provide a reference for structural vibration serviceability assessments that would consider pedestrian–structure interaction effects.

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33

Courtens, E., and R. Vacher. "Structure and dynamics of fractal aerogels." Zeitschrift f�r Physik B Condensed Matter 68, no. 2-3 (June 1987): 355–61. http://dx.doi.org/10.1007/bf01304252.

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34

Shima, M. "Dissolution Dynamics of Artificially Structured Materials." Electrochemical and Solid-State Letters 2, no. 6 (1999): 271. http://dx.doi.org/10.1149/1.1390808.

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35

Cockayne, D. J. H., D. R. McKenzie, W. McBride, C. Goringe, and D. McCulloch. "Characterization of Amorphous Materials by Electron Diffraction and Atomistic Modeling." Microscopy and Microanalysis 6, no. 4 (July 2000): 329–34. http://dx.doi.org/10.1017/s1431927602000570.

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AbstractThe technique of energy selected electron diffraction gives information about amorphous structures which can be used to characterize amorphous materials in terms of their structure. The diffraction data can be used to refine models obtained using molecular dynamics, resulting in physically reasonable models consistent with the diffraction data.

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Cockayne, D. J. H., D. R. McKenzie, W. McBride, C. Goringe, and D. McCulloch. "Characterization of Amorphous Materials by Electron Diffraction and Atomistic Modeling." Microscopy and Microanalysis 6, no. 4 (July 2000): 329–34. http://dx.doi.org/10.1007/s100050010044.

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Abstract The technique of energy selected electron diffraction gives information about amorphous structures which can be used to characterize amorphous materials in terms of their structure. The diffraction data can be used to refine models obtained using molecular dynamics, resulting in physically reasonable models consistent with the diffraction data.

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37

Goltsman, Boris. "STUDY OF THE FORMATION DYNAMICS OF FOAM GLASS MATERIALS’ POROUS STRUCTURE." University News. North-Caucasian Region. Technical Sciences Series, no. 2 (June 2022): 34–39. http://dx.doi.org/10.17213/1560-3644-2022-2-34-39.

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38

Sikora, Janusz W. "Special Issue: Processing, Structure, Dynamics and Mechanical Properties of Polymeric Materials." Materials 15, no. 9 (April 26, 2022): 3143. http://dx.doi.org/10.3390/ma15093143.

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The current Special Issue entitled “Processing, structure, dynamics and mechanical properties of polymeric materials” brings together scientists working at universities, research institutes, laboratories and various industries to discuss cutting-edge research on processing new polymeric materials using standard and innovative machines and to understand the structure and properties of these materials [...]

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Sikora, Janusz W. "Special Issue: Processing, Structure, Dynamics and Mechanical Properties of Polymeric Materials." Materials 15, no. 9 (April 26, 2022): 3143. http://dx.doi.org/10.3390/ma15093143.

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The current Special Issue entitled “Processing, structure, dynamics and mechanical properties of polymeric materials” brings together scientists working at universities, research institutes, laboratories and various industries to discuss cutting-edge research on processing new polymeric materials using standard and innovative machines and to understand the structure and properties of these materials [...]

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40

Miyazaki, Toshikuni, Hitoshi Hayashi, and Mamoru Yamashita. "Molecular dynamics study on structure and stability of antiferroelectric smectic materials." Ferroelectrics 245, no. 1 (June 2000): 139–46. http://dx.doi.org/10.1080/00150190008229584.

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41

Sun, Tao, and Kamel Fezzaa. "High-speed X-ray diffraction for studying irreversible materials structure dynamics." Acta Crystallographica Section A Foundations and Advances 73, a1 (May 26, 2017): a49. http://dx.doi.org/10.1107/s0108767317099512.

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42

Zhang, Rui, Nitin Kumar, Jennifer L. Ross, Margaret L. Gardel, and Juan J. de Pablo. "Interplay of structure, elasticity, and dynamics in actin-based nematic materials." Proceedings of the National Academy of Sciences 115, no. 2 (December 28, 2017): E124—E133. http://dx.doi.org/10.1073/pnas.1713832115.

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Achieving control and tunability of lyotropic materials has been a long-standing goal of liquid crystal research. Here we show that the elasticity of a liquid crystal system consisting of a dense suspension of semiflexible biopolymers can be manipulated over a relatively wide range of elastic moduli. Specifically, thin films of actin filaments are assembled at an oil–water interface. At sufficiently high concentrations, one observes the formation of a nematic phase riddled with ±1/2 topological defects, characteristic of a two-dimensional nematic system. As the average filament length increases, the defect morphology transitions from a U shape into a V shape, indicating the relative increase of the material’s bend over splay modulus. Furthermore, through the sparse addition of rigid microtubule filaments, one can gain additional control over the liquid crystal’s elasticity. We show how the material’s bend constant can be raised linearly as a function of microtubule filament density, and present a simple means to extract absolute values of the elastic moduli from purely optical observations. Finally, we demonstrate that it is possible to predict not only the static structure of the material, including its topological defects, but also the evolution of the system into dynamically arrested states. Despite the nonequilibrium nature of the system, our continuum model, which couples structure and hydrodynamics, is able to capture the annihilation and movement of defects over long time scales. Thus, we have experimentally realized a lyotropic liquid crystal system that can be truly engineered, with tunable mechanical properties, and a theoretical framework to capture its structure, mechanics, and dynamics.

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43

Goodwin, A. L. "The crystallography of flexibility: Local structure and dynamics in framework materials." Zeitschrift für Kristallographie Supplements 2009, no. 30 (September 2009): 1–11. http://dx.doi.org/10.1524/zksu.2009.0001.

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44

Parvanov, Vencislav M., Gregory K. Schenter, Nancy J. Hess, Luke L. Daemen, Monika Hartl, Ashley C. Stowe, Donald M. Camaioni, and Tom Autrey. "Materials for hydrogen storage: structure and dynamics of borane ammonia complex." Dalton Transactions, no. 33 (2008): 4514. http://dx.doi.org/10.1039/b718138h.

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45

Pakula, Tadeusz. "Structure, Dynamics and Properties of Materials with Polymers Having Complex Architectures." Macromolecular Symposia 214, no. 1 (August 2004): 307–16. http://dx.doi.org/10.1002/masy.200451023.

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46

Chinenkov, Maksim, A. F. Popkov, V. I. Korneev, N. A. Mazurkin, and N. A. Dyuzhev. "Nonlinear Spin Dynamics in Magnetic Mesostructures Induced by Spin Polarized Autoemission." Solid State Phenomena 168-169 (December 2010): 61–64. http://dx.doi.org/10.4028/www.scientific.net/ssp.168-169.61.

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The work is devoted to the discussion of magnetic dynamics features in mesoscopic magnetic structures under the action of spin transport and spin-torque transfer in the nanopillar structures. Tunneling magnetic structure consisting of autoemission cathode and patterned magnetic anode is considered. Main bifurcation changes in the states of a dynamical system, that models mesoscopic structure, are discussed for varied spin polarized current and an external magnetic field.

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47

Phillips, Anthony. "Comparing the dynamics of coordination polyhedra in a metal-cyanide framework." Acta Crystallographica Section A Foundations and Advances 70, a1 (August 5, 2014): C590. http://dx.doi.org/10.1107/s2053273314094091.

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The enormous amount of attention devoted to metal-organic framework materials over the past two decades has yielded substantial synthetic control over these materials, so that specific topologies can be explicitly engineered by carefully selecting metal and ligand "building blocks". The dynamic behaviour of these materials, however, remains far less predictable: yet it is this behaviour that is the key to understanding the highly anomalous thermodynamic properties of many framework materials. When studying these compounds crystallographically it is important to acknowledge the limitations of Bragg scattering, which by revealing only a space- and time-averaged structure can give an incomplete or even actively misleading picture of the material's dynamic behaviour. For this reason, complementary techniques, such as XAFS, that are sensitive to the local structure of materials are vitally important. We have studied the behaviour of a prototypical framework material exhibiting near-zero thermal expansion, tetramethylammonium copper(I) zinc(II) cyanide, by X-ray absorption spectroscopy at the Cu and Zn K edges in combination with total neutron and X-ray scattering, supported by reverse Monte Carlo and density-functional theory calculations, thus simultaneously modelling the long-range and local structure of this material. Our results resolve for the first time the individual flexibility of the copper and zinc coordination tetrahedra, suggesting substantially higher flexibility of both types of polyhedra than was previously thought. These results shed new light on the atomic origins of this material's flexibility, and explain the mobility of guest molecules through the framework structure. More generally, this methodology points the way to being able to choose framework components for their dynamic properties, and hence to the rational synthesis of flexible framework materials with targeted thermodynamic properties.

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48

Kim, Hak-Jae. "Dynamics of Violence Structure in Northeast Asia." Religions of Korea 51 (February 28, 2022): 7–55. http://dx.doi.org/10.37860/krel.2022.02.51.7.

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49

Ayad, M., N. Karathanasopoulos, H. Reda, JF Ganghoffer, and H. Lakiss. "Dispersion characteristics of periodic structural systems using higher order beam element dynamics." Mathematics and Mechanics of Solids 25, no. 2 (October 22, 2019): 457–74. http://dx.doi.org/10.1177/1081286519880227.

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In the current work, we elaborate upon a beam mechanics-based discrete dynamics approach for the computation of the dispersion characteristics of periodic structures. Within that scope, we compute the higher order asymptotic expansion of the forces and moments developed within beam structural elements upon dynamic loads. Thereafter, we employ the obtained results to compute the dispersion characteristics of one- and two-dimensional periodic media. In the one-dimensional space, we demonstrate that single unit-cell equilibrium can provide the fundamental low-frequency band diagram structure, which can be approximated by non-dispersive Cauchy media formulations. However, we show that the discrete dynamics method can access the higher frequency modes by considering multiple unit-cell systems for the dynamic equilibrium, frequency ranges that cannot be accessed by simplified formulations. We extend the analysis into two-dimensional space computing with the dispersion attributes of square lattice structures. Thereupon, we demonstrate that the discrete dynamics dispersion results compare well with that obtained using Bloch theorem computations. We show that a high-order expansion of the inner element forces and moments of the structures is required for the higher wave propagation modes to be accurately represented, in contrast to the shear and the longitudinal mode, which can be captured using a lower, fourth-order expansion of its inner dynamic forces and moments. The provided results can serve as a reference analysis for the computation of the dispersion characteristics of periodic structural systems with the use of discrete element dynamics.

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50

Kunz, W., and P. Turq. "Structure and dynamics of nonaqueous solutions." Journal of Physics: Condensed Matter 2, S (December 1, 1990): SA151—SA156. http://dx.doi.org/10.1088/0953-8984/2/s/020.

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