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619 Results Found

  • Article
  • Open Access
4 Citations
1,749 Views
9 Pages

Atomistic Simulations of Mechanical Properties of Lignin

  • Siteng Zhang,
  • Yishayah Bension,
  • Michael Shimizu and
  • Ting Ge

19 December 2024

The mechanical properties of lignin, an aromatic heteropolymer constituting 20–30% plant biomass, are important to the fabrication and processing of lignin-based sustainable polymeric materials. In this study, atomistic simulations are performe...

  • Article
  • Open Access
35 Citations
9,601 Views
15 Pages

Edge Structure of Montmorillonite from Atomistic Simulations

  • Aric G. Newton,
  • Kideok D. Kwon and
  • Dae-Kyo Cheong

25 March 2016

Classical molecular dynamics (MD) simulations have been performed to investigate the effects of substitutions in the octahedral sheet (Mg for Al) and layer charge on an atomistic model of the montmorillonite edge. The edge models considered substitut...

  • Article
  • Open Access
4 Citations
1,269 Views
12 Pages

7 October 2024

A systematic simulation study was performed to investigate the interlayer interactions in a 1:1 layered phyllosilicate clay, kaolinite. Atomistic simulations with classical realistic force fields (INTERFACE and ClayFF) were used to examine the influe...

  • Article
  • Open Access
4 Citations
2,282 Views
25 Pages

19 April 2024

Point defects induced by doping rare earth elements (RE) (Nd and Er) into a magnesium oxide host were investigated via classical atomistic simulations utilising the General Utility Lattice Program (GULP). Formation and association energies were calcu...

  • Article
  • Open Access
2 Citations
2,353 Views
11 Pages

27 September 2023

This paper investigates the interaction of edge dislocations with voids in concentrated solid solution alloys (CSAs) using atomistic simulations. The simulation setup consists of edge dislocations with different periodicity lengths and a periodic arr...

  • Review
  • Open Access
17 Citations
5,020 Views
19 Pages

27 January 2022

Nanoscale biosensors, a highly promising technique in clinical analysis, can provide sensitive yet label-free detection of biomolecules. The spatial and chemical specificity of the surface coverage, the proper immobilization of the bioreceptor as wel...

  • Review
  • Open Access
20 Citations
5,161 Views
30 Pages

21 December 2020

Combining neutron scattering and fully atomistic molecular dynamics simulations allows unraveling structural and dynamical features of polymer melts at different length scales, mainly in the intermolecular and monomeric range. Here we present the met...

  • Feature Paper
  • Article
  • Open Access
13 Citations
4,437 Views
10 Pages

Atomistic Simulations of the Defect Chemistry and Self-Diffusion of Li-ion in LiAlO2

  • N. Kuganathan,
  • J. Dark,
  • E.N. Sgourou,
  • Y. Panayiotatos and
  • A. Chroneos

27 July 2019

Lithium aluminate, LiAlO2, is a material that is presently being considered as a tritium breeder material in fusion reactors and coating material in Li-conducting electrodes. Here, we employ atomistic simulation techniques to show that the lowest ene...

  • Article
  • Open Access
36 Citations
8,928 Views
14 Pages

20 November 2018

In this study, molecular dynamics (MD) simulations of hydrated anion-exchange membranes (AEMs), comprised of poly(p-phenylene oxide) (PPO) polymers functionalized with quaternary ammonium cationic groups, were conducted using multiscale coupling betw...

  • Review
  • Open Access
2 Citations
4,901 Views
18 Pages

11 February 2018

Based on the framework of long-range empirical formulas, the interatomic potentials were constructed for the Ni-Nb-Mo (fcc-bcc-bcc) and Ni-Zr-Mo (fcc-hcp-bcc) ternary metal systems. Applying the constructed potentials, atomistic simulations were perf...

  • Article
  • Open Access
4 Citations
2,666 Views
25 Pages

6 September 2024

Polymer nanocomposites are characterized by heterogeneous mechanical behavior and performance, which is mainly controlled by the interaction between the nanofiller and the polymer matrix. Optimizing their material performance in engineering applicati...

  • Article
  • Open Access
18 Citations
3,786 Views
26 Pages

Coupling between Polymer Conformations and Dynamics Near Amorphous Silica Surfaces: A Direct Insight from Atomistic Simulations

  • Petra Bačová,
  • Wei Li,
  • Alireza F. Behbahani,
  • Craig Burkhart,
  • Patrycja Polińska,
  • Manolis Doxastakis and
  • Vagelis Harmandaris

16 August 2021

The dynamics of polymer chains in the polymer/solid interphase region have been a point of debate in recent years. Its understanding is the first step towards the description and the prediction of the properties of a wide family of commercially used...

  • Article
  • Open Access
8 Citations
4,194 Views
16 Pages

PDADMAC/PSS Oligoelectrolyte Multilayers: Internal Structure and Hydration Properties at Early Growth Stages from Atomistic Simulations

  • Pedro A. Sánchez,
  • Martin Vögele,
  • Jens Smiatek,
  • Baofu Qiao,
  • Marcello Sega and
  • Christian Holm

17 April 2020

We analyze the internal structure and hydration properties of poly(diallyl dimethyl ammonium chloride)/poly(styrene sulfonate sodium salt) oligoelectrolyte multilayers at early stages of their layer-by-layer growth process. Our study is based on larg...

  • Article
  • Open Access
2,282 Views
11 Pages

The dynamic characterization of guest molecules in the metal–organic frameworks (MOFs) can always provide the insightful and inspiring information to facilitate the synthetic design of MOF materials from the bottom-up design of perspective. Her...

  • Article
  • Open Access
5 Citations
3,698 Views
13 Pages

15 March 2023

The behavior of brucite over wide ranges of temperatures and pressures is of great interest for fundamental geochemistry and geophysics. Brucite layers and their octahedral Mg(OH)6 structural units constitute an important structural part of layered d...

  • Article
  • Open Access
15 Citations
9,165 Views
18 Pages

23 January 2017

Single-crystal Ni-base superalloys, consisting of a two-phase γ/ γ ′ microstructure, retain high strengths at elevated temperatures and are key materials for high temperature applications, like, e.g., turbine blades of aircraft engines. The la...

  • Article
  • Open Access
4 Citations
3,148 Views
10 Pages

26 November 2018

The technique of molecular statics (MS) simulation was employed to determine the crack growth resistance curve of Cu and Ni single crystals. Copper and Ni single crystal nanoplates with an edge crack subjected to a tensile displacement were simulated...

  • Article
  • Open Access
7 Citations
3,470 Views
15 Pages

6 May 2020

Molecular dynamics simulations of free-standing thin films of neat melts of polyethylene (PE) chains up to C150H302 and their binary mixtures with n-C13H28 are performed employing a united atom model. We estimate the surface tension values of PE melt...

  • Article
  • Open Access
12 Citations
2,524 Views
15 Pages

20 December 2022

This research paper studies the fracture and mechanical properties of rippled graphene containing dislocation dipoles. The atomistic simulation is performed to study the deformation behavior of pristine and defective wrinkled graphene. Graphene wrink...

  • Article
  • Open Access
13 Citations
7,927 Views
11 Pages

15 August 2019

Plasma-enhanced atomic layer deposition (PEALD) is a widely used, powerful layer-by-layer coating technology. Here, we present an atomistic simulation scheme for PEALD processes, combining the Monte Carlo deposition algorithm and structure relaxation...

  • Article
  • Open Access
16 Citations
4,550 Views
14 Pages

Atomistic Simulations of Defect Production in Monolayer and Bulk Hexagonal Boron Nitride under Low- and High-Fluence Ion Irradiation

  • Sadegh Ghaderzadeh,
  • Silvan Kretschmer,
  • Mahdi Ghorbani-Asl,
  • Gregor Hlawacek and
  • Arkady V. Krasheninnikov

Controlled production of defects in hexagonal boron nitride (h-BN) through ion irradiation has recently been demonstrated to be an effective tool for adding new functionalities to this material, such as single-photon generation, and for developing op...

  • Article
  • Open Access
8 Citations
4,281 Views
14 Pages

Cyclic Indentation of Iron: A Comparison of Experimental and Atomistic Simulations

  • Shayan Deldar,
  • Iyad Alabd Alhafez,
  • Marek Smaga,
  • Tilmann Beck and
  • Herbert M. Urbassek

10 May 2019

Cyclic indentation is a technique used to characterize materials by indenting repeatedly on the same location. This technique allows information to be obtained on how the plastic material response changes under repeated loading. We explore the proces...

  • Article
  • Open Access
17 Citations
4,894 Views
10 Pages

Defect, Diffusion and Dopant Properties of NaNiO2: Atomistic Simulation Study

  • Ruwani Kaushalya,
  • Poobalasuntharam Iyngaran,
  • Navaratnarajah Kuganathan and
  • Alexander Chroneos

12 August 2019

Sodium nickelate, NaNiO2, is a candidate cathode material for sodium ion batteries due to its high volumetric and gravimetric energy density. The use of atomistic simulation techniques allows the examination of the defect energetics, Na-ion diffusion...

  • Article
  • Open Access
12 Citations
4,575 Views
12 Pages

Atomistic-Scale Simulations on Graphene Bending Near a Copper Surface

  • Malgorzata Kowalik,
  • Md Jamil Hossain,
  • Aditya Lele,
  • Wenbo Zhu,
  • Riju Banerjee,
  • Tomotaroh Granzier-Nakajima,
  • Mauricio Terrones,
  • Eric W. Hudson and
  • Adri C. T. van Duin

4 February 2021

Molecular insights into graphene-catalyst surface interactions can provide useful information for the efficient design of copper current collectors with graphitic anode interfaces. As graphene bending can affect the local electron density, it should...

  • Article
  • Open Access
2 Citations
2,902 Views
19 Pages

16 November 2020

In this work we theoretically explore the effect of dimensionality on the thermoelectric power factor of indium arsenide (InA) nanowires by coupling atomistic tight-binding calculations to the Linearized Boltzmann transport formalism. We consider nan...

  • Article
  • Open Access
4 Citations
2,423 Views
13 Pages

24 May 2022

Through atomistic simulations, this work investigated the permeability of hexagonal diamond nanochannels for NaCl solution. Compared with the multilayer graphene nanochannel (with a nominal channel height of 6.8 Å), the diamond nanochannel exhi...

  • Article
  • Open Access
3 Citations
1,790 Views
14 Pages

30 September 2023

In this study, atomistic simulations were carried out to study the difference in the adsorption process between two similar molecules, diazepam and oxazepam, on Na+-montmorillonite. Kinetic and XRD measurements showed a contrasting adsorption mechani...

  • Article
  • Open Access
22 Citations
6,671 Views
20 Pages

Atomistic Molecular Dynamics Simulations of the Initial Crystallization Stage in an SWCNT-Polyetherimide Nanocomposite

  • Victor M. Nazarychev,
  • Sergey V. Larin,
  • Alexey V. Lyulin,
  • Theo Dingemans,
  • Jose M. Kenny and
  • Sergey V. Lyulin

24 October 2017

Crystallization of all-aromatic heterocyclic polymers typically results in an improvement of their thermo-mechanical properties. Nucleation agents may be used to promote crystallization, and it is well known that the incorporation of nanoparticles, a...

  • Article
  • Open Access
28 Citations
4,846 Views
18 Pages

Adsorption of Fibronectin Fragment on Surfaces Using Fully Atomistic Molecular Dynamics Simulations

  • Evangelos Liamas,
  • Karina Kubiak-Ossowska,
  • Richard A. Black,
  • Owen R.T. Thomas,
  • Zhenyu J. Zhang and
  • Paul A. Mulheran

25 October 2018

The effect of surface chemistry on the adsorption characteristics of a fibronectin fragment (FNIII8–10) was investigated using fully atomistic molecular dynamics simulations. Model surfaces were constructed to replicate self-assembled monolayer...

  • Article
  • Open Access
530 Views
16 Pages

12 November 2025

Using reactive atomistic molecular dynamics, we simulate the network formation and bulk properties of chemically identical liquid crystal elastomers (LCEs) and isotropic elastomers. The nematic elastomer is from a family of materials that have been s...

  • Article
  • Open Access
7 Citations
2,645 Views
16 Pages

Magnetic Behavior of the Arrays of Iron Cylindrical Nanostructures: Atomistic Spin Model Simulations

  • Oleksandr Pastukh,
  • Malgorzata Kac,
  • Svitlana Pastukh,
  • Dominika Kuźma,
  • Mateusz Zelent,
  • Maciej Krawczyk and
  • Łukasz Laskowski

21 March 2023

Cylindrical ferromagnetic nanowires are of particular interest in nanomaterials science due to various manufacturing methods and a wide range of applications in nanotechnology, with special attention given to those with diameters less than the single...

  • Article
  • Open Access
8 Citations
4,777 Views
25 Pages

18 December 2021

This computational study investigates the influence of light on supramolecular aggregates of three-arm azobenzene stars. Every star contains three azobenzene (azo) moieties, each able to undergo reversible photoisomerization. In solution, the azo sta...

  • Article
  • Open Access
3 Citations
3,732 Views
25 Pages

15 December 2021

We present a simulation study of supramolecular aggregates formed by three-arm azobenzene (Azo) stars with a benzene-1,3,5-tricarboxamide (BTA) core in water. Previous experimental works by other research groups demonstrate that such Azo stars assemb...

  • Article
  • Open Access
6 Citations
4,283 Views
14 Pages

Examining the Effect of Charged Lipids on Mitochondrial Outer Membrane Dynamics Using Atomistic Simulations

  • Aline A. Oliveira,
  • Tomasz Róg,
  • Albérico B. F. da Silva,
  • Rommie E. Amaro,
  • Mark S. Johnson and
  • Pekka A. Postila

22 January 2022

The outer mitochondrial membrane (OMM) is involved in multiple cellular functions such as apoptosis, inflammation and signaling via its membrane-associated and -embedded proteins. Despite the central role of the OMM in these vital phenomena, the stru...

  • Article
  • Open Access
8 Citations
4,862 Views
10 Pages

27 March 2020

We present fully atomistic molecular dynamics (MD) simulations at 450 K of two ionic liquid crystals in the smectic phase: 1-dodecyl-3-methylimidazolium tetrafluoroborate ([C12C1im][BF4]) and 1-dodecyl-3-methylimidazolium chloride ([C12C1im]Cl). The...

  • Article
  • Open Access
2 Citations
2,727 Views
13 Pages

22 November 2021

The penetration process has attracted increasing attention due to its engineering and scientific value. In this work, we investigate the deformation and damage mechanism about the nanoscale penetration of single-crystal aluminum nanorod with atomisti...

  • Article
  • Open Access
1,646 Views
12 Pages

Atomistic Simulation Studies of Na4SiO4

  • Mallikage Shalani Shanika,
  • Poobalasingam Abiman,
  • Poobalasuntharam Iyngaran and
  • Navaratnarajah Kuganathan

10 August 2024

Tetrasodium silicate (Na4SiO4) has emerged as a promising candidate for battery applications due to its favorable ionic transport properties. Atomic-scale simulations employing classical pair potentials have elucidated the defect mechanisms and ion m...

  • Article
  • Open Access
1,299 Views
16 Pages

Computational Study of Ultra-Small Gold Nanoparticles with Amphiphilic Polymer Coating

  • Paulo Siani,
  • Edoardo Donadoni,
  • Giulia Frigerio,
  • Marialaura D’Alessio and
  • Cristiana Di Valentin

Nanomedicine is rapidly evolving, with tailored nanoparticles enabling precise cellular-level interventions. Despite significant advances, challenges, such as rapid clearance and off-target effects, hinder the clinical translation of many nanosystems...

  • Article
  • Open Access
8 Citations
3,014 Views
21 Pages

1 July 2023

Over the past few decades, the enhancement of polymer thermal conductivity has attracted considerable attention in the scientific community due to its potential for the development of new thermal interface materials (TIM) for both electronic and elec...

  • Feature Paper
  • Article
  • Open Access
8 Citations
2,456 Views
17 Pages

25 March 2023

Constitutive description of the plastic flow in metallic foams has been rarely explored in the literature. Even though the material is of great interest to researchers, its plasticity remains a topic that has a much room for exploration. With the hel...

  • Review
  • Open Access
133 Citations
14,619 Views
28 Pages

23 October 2017

Nanoindentation is a well-stablished experiment to study the mechanical properties of materials at the small length scales of micro and nano. Unlike the conventional indentation experiments, the nanoindentation response of the material depends on the...

  • Article
  • Open Access
18 Citations
3,708 Views
11 Pages

Defects, Diffusion, and Dopants in Li2Ti6O13: Atomistic Simulation Study

  • Navaratnarajah Kuganathan,
  • Sashikesh Ganeshalingam and
  • Alexander Chroneos

4 September 2019

In this study, force field-based simulations are employed to examine the defects in Li-ion diffusion pathways together with activation energies and a solution of dopants in Li2Ti6O13. The lowest defect energy process is found to be the Li Frenkel (0....

  • Article
  • Open Access
11 Citations
2,776 Views
23 Pages

Monazite-Type SmPO4 as Potential Nuclear Waste Form: Insights into Radiation Effects from Ion-Beam Irradiation and Atomistic Simulations

  • Julia M. Leys,
  • Yaqi Ji,
  • Martina Klinkenberg,
  • Piotr M. Kowalski,
  • Hartmut Schlenz,
  • Stefan Neumeier,
  • Dirk Bosbach and
  • Guido Deissmann

10 May 2022

Single-phase monazite-type ceramics are considered as potential host matrices for the conditioning of separated plutonium and minor actinides. Sm-orthophosphates were synthesised and their behaviour under irradiation was investigated with respect to...

  • Article
  • Open Access
7 Citations
3,869 Views
16 Pages

8 April 2021

The vast majority of coagulation factor VII (FVII), a trypsin-like protease, circulates as the inactive zymogen. Activated FVII (FVIIa) is formed upon proteolytic activation of FVII, where it remains in a zymogen-like state and it is fully activated...

  • Article
  • Open Access
315 Views
15 Pages

28 December 2025

Amphiphilic dendrimers represent a promising class of nanoscale building blocks for functional materials, yet their conformational behavior, solvation, and interfacial activity remain incompletely understood. In this work, we employ atomistic molecul...

  • Article
  • Open Access
2 Citations
2,542 Views
27 Pages

17 November 2020

We present the results of free 3D molecular dynamics (MD) simulations, focused on the influence of temperature on the ductile-brittle behavior of a pre-existing central Griffith through microcrack (1¯10)[110] (crack plane/crack front) under biax...

  • Article
  • Open Access
4 Citations
2,518 Views
15 Pages

Effect of a Long-Range Dislocation Pileup on the Atomic-Scale Hydrogen Diffusion near a Grain Boundary in Plastically Deformed bcc Iron

  • Yipeng Peng,
  • Rigelesaiyin Ji,
  • Thanh Phan,
  • Xiang Chen,
  • Ning Zhang,
  • Shuozhi Xu,
  • Ashraf Bastawros and
  • Liming Xiong

17 August 2023

In this paper, we present concurrent atomistic-continuum (CAC) simulations of the hydrogen (H) diffusion along a grain boundary (GB), nearby which a large population of dislocations are piled up, in a plastically deformed bi-crystalline bcc iron samp...

  • Article
  • Open Access
2,595 Views
16 Pages

The Instability Criterion for Bicrystal at Nanoscale

  • Lin Yuan,
  • Chuanlong Xu,
  • Jiangwei Zhang,
  • Debin Shan and
  • Bin Guo

24 November 2018

Atomistic simulations are performed to predict the plastic yield using the instability criterion under thermal effect. The results show the instability criterion is applicable at low temperature (0~100 K) and invalid at a higher temperature (>200...

  • Feature Paper
  • Article
  • Open Access
13 Citations
2,443 Views
20 Pages

23 September 2022

Our current understanding of heterogeneous nucleation has been largely confined to the classical nucleation theory (CNT) that was postulated over 100 years ago based on a thermodynamic approach. Further advances in heterogeneous nucleation research r...

  • Article
  • Open Access
1 Citations
2,287 Views
9 Pages

Conformational Dependence of the First Hyperpolarizability of the Li@B10H14 in Solution

  • Idney Brandão,
  • Tertius L. Fonseca,
  • Herbert C. Georg,
  • Marcos A. Castro and
  • Renato B. Pontes

20 February 2023

Using the ASEC-FEG approach in combination with atomistic simulations, we performed geometry optimizations of a Cs conformer of the lithium decahydroborate (Li@B10H14) complex in chloroform and in water, which has been shown to be the most stable in...

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