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Search for "force fields" in Full Text gives 28 result(s) in Beilstein Journal of Nanotechnology.

A review of metal-organic frameworks and polymers in mixed matrix membranes for CO2 capture

  • Charlotte Skjold Qvist Christensen,
  • Nicholas Hansen,
  • Mahboubeh Motadayen,
  • Nina Lock,
  • Martin Lahn Henriksen and
  • Jonathan Quinson

Beilstein J. Nanotechnol. 2025, 16, 155–186, doi:10.3762/bjnano.16.14

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Published 12 Feb 2025

AI-assisted models to predict chemotherapy drugs modified with C60 fullerene derivatives

  • Jonathan-Siu-Loong Robles-Hernández,
  • Dora Iliana Medina,
  • Katerin Aguirre-Hurtado,
  • Marlene Bosquez,
  • Roberto Salcedo and
  • Alan Miralrio

Beilstein J. Nanotechnol. 2024, 15, 1170–1188, doi:10.3762/bjnano.15.95

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  • genetic algorithms and final optimization at the DFTB3 level, respectively. London dispersion forces were considered in the DFTB3 and global optimization procedures by Lennard-Jones potentials, as implemented in UFF and MMFF94 force fields, respectively. The solvent effect was included by the Born
  • structure, as in the study of Muthiah and coworkers [45], was validated using PROCHECK [46] to check the quality of the protein structure. The PDB produced with the previous step was subsequently optimized by an energy minimization through Amber force fields using the USCF Chimera 1.14 toolkit [47]. The
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Published 19 Sep 2024

Atomistic insights into the morphological dynamics of gold and platinum nanoparticles: MD simulations in vacuum and aqueous media

  • Evangelos Voyiatzis,
  • Eugenia Valsami-Jones and
  • Antreas Afantitis

Beilstein J. Nanotechnol. 2024, 15, 995–1009, doi:10.3762/bjnano.15.81

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  • NP are presented in Table 1. The potential energy of the NPs is described by the EAM/alloy force field; the parameters proposed by Grochola et al. [57] for the Au NPs and by O'Brien et al. [58] for the Pt NPs are adopted. For both force fields, files containing all required parameters in suitable
  • directly via molecular simulations by means of reactive force fields [88], the size of the systems and the number of contained molecules render such an approach almost computationally unattainable. Conclusion In the present simulation study, we focused on the thermal behaviour of Au and Pt NPs experiencing
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Published 07 Aug 2024

Multiscale modelling of biomolecular corona formation on metallic surfaces

  • Parinaz Mosaddeghi Amini,
  • Ian Rouse,
  • Julia Subbotina and
  • Vladimir Lobaskin

Beilstein J. Nanotechnol. 2024, 15, 215–229, doi:10.3762/bjnano.15.21

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  • GROMACS-2018.6 and PLUMED (PLUMED2-2.5.1.conda.5) software packages [29][30][31]. CHARMM-GUI/Nanomaterial Modeler was employed to construct the topology and force fields of three fcc surfaces of Al: (100), (110), and (111) [32]. The General Amber Force Field (GAFF) was utilized to model side-chains
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Published 13 Feb 2024

Ultralow-energy amorphization of contaminated silicon samples investigated by molecular dynamics

  • Grégoire R. N. Defoort-Levkov,
  • Alan Bahm and
  • Patrick Philipp

Beilstein J. Nanotechnol. 2023, 14, 834–849, doi:10.3762/bjnano.14.68

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  • amorphization. We will also show that favorable angles to minimize the implantation of the species of the contamination layer are in the range of 60° to 75°. Computational Methods Force fields The force fields used to simulate the Ar bombardment of a contaminated silicon sample have already been described in a
  • Sycheva et al. agree well with our values, while the other values are well above. The difference in sputtering yields between our results and the literature data can be explained by the difference between the ReaxFF potential used in our simulations and the force fields or experimental methods used in the
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Published 01 Aug 2023

Transferability of interatomic potentials for silicene

  • Marcin Maździarz

Beilstein J. Nanotechnol. 2023, 14, 574–585, doi:10.3762/bjnano.14.48

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  • –Weber, EDIP, ReaxFF, COMB, and machine-learning-based interatomic potentials. A quantitative systematic comparison and a discussion of the results obtained are reported. Keywords: 2D materials; DFT; force fields; interatomic potentials; mechanical properties; silicene; Introduction We are living in
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Published 08 May 2023

Influence of water contamination on the sputtering of silicon with low-energy argon ions investigated by molecular dynamics simulations

  • Grégoire R. N. Defoort-Levkov,
  • Alan Bahm and
  • Patrick Philipp

Beilstein J. Nanotechnol. 2022, 13, 986–1003, doi:10.3762/bjnano.13.86

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  • [30]. ReaxFF force fields are specifically tuned for a set of atomic interactions. They are developed from quantum calculations and are adapted for MD simulations, providing faster calculations than pure quantum electrodynamics (QED)/density functional theory (DFT) and more information than classical
  • Methods Force fields The ReaxFF force field differs from other established force fields as it aims to bridge quantum mechanics (QM) and classical MD. Quantum mechanics algorithms are limited to small-sized samples (up to a few hundreds of atoms) due to the difficulty to solve Schrödinger equations for
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Published 21 Sep 2022

Effect of lubricants on the rotational transmission between solid-state gears

  • Huang-Hsiang Lin,
  • Jonathan Heinze,
  • Alexander Croy,
  • Rafael Gutiérrez and
  • Gianaurelio Cuniberti

Beilstein J. Nanotechnol. 2022, 13, 54–62, doi:10.3762/bjnano.13.3

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  • MD simulations. For the force fields, we choose the adaptive intermolecular reactive empirical bond order (AIREBO) potential [59]. This potential was designed for hydrocarbon systems and can reach reasonable densities for the molecules we will use later. We have used two different protocols. For
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Published 05 Jan 2022

Irradiation-driven molecular dynamics simulation of the FEBID process for Pt(PF3)4

  • Alexey Prosvetov,
  • Alexey V. Verkhovtsev,
  • Gennady Sushko and
  • Andrey V. Solov’yov

Beilstein J. Nanotechnol. 2021, 12, 1151–1172, doi:10.3762/bjnano.12.86

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  • deposition; irradiation-driven molecular dynamics; irradiation-induced chemistry; platinum nanostructures; reactive force fields; Introduction The controllable fabrication of nanostructures with nanoscale resolution remains a considerable scientific and technological challenge [1]. To address this challenge
  • of atomic partial charges, or alteration of interatomic interactions) are simulated by means of MD with reactive force fields [17][18] using the advanced software packages MBN Explorer [19] and MBN Studio [20]. MBN Explorer is a multi-purpose software package for multiscale simulations of structure
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Published 13 Oct 2021

Molecular dynamics modeling of the influence forming process parameters on the structure and morphology of a superconducting spin valve

  • Alexander Vakhrushev,
  • Aleksey Fedotov,
  • Vladimir Boian,
  • Roman Morari and
  • Anatolie Sidorenko

Beilstein J. Nanotechnol. 2020, 11, 1776–1788, doi:10.3762/bjnano.11.160

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  • the nanosystem. There are many possible choices for the type of potential, but recently, due to its accuracy and adequacy, many-particle force fields have gained great popularity. In this work, we used the potential of the modified embedded-atom method (MEAM) which is based on density functional
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Published 24 Nov 2020

Calculating free energies of organic molecules on insulating substrates

  • Julian Gaberle,
  • David Z. Gao and
  • Alexander L. Shluger

Beilstein J. Nanotechnol. 2017, 8, 667–674, doi:10.3762/bjnano.8.71

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  • significantly lower the adhesion energy of molecules at step edges and cannot be ignored when considering film growth at step edges and terraces. Methods Classical force fields In order to calculate free energies of molecular processes on surfaces, long-timescale MD simulations are needed. Therefore classical
  • force fields are used since the computational cost associated with ab initio methods is too high. The LAMMPS code was used for all calculations [44] along with a combination of several classical force fields. A Buckingham potential was used to describe the interactions inside the KCl slab, as
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Published 21 Mar 2017

Noise in NC-AFM measurements with significant tip–sample interaction

  • Jannis Lübbe,
  • Matthias Temmen,
  • Philipp Rahe and
  • Michael Reichling

Beilstein J. Nanotechnol. 2016, 7, 1885–1904, doi:10.3762/bjnano.7.181

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  • science tool, especially when it comes to studying non-conducting surfaces [3][4], to map sub-molecular structures [5] or to measure forces [6] and force fields [7] with highest resolution. The primary imaging signal in NC-AFM is the frequency shift Δf of a probe resonator carrying a tip interacting with
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Published 01 Dec 2016

Numerical investigation of depth profiling capabilities of helium and neon ions in ion microscopy

  • Patrick Philipp,
  • Lukasz Rzeznik and
  • Tom Wirtz

Beilstein J. Nanotechnol. 2016, 7, 1749–1760, doi:10.3762/bjnano.7.168

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  • dynamics (MD) simulations, possible changes in the sample upon irradiation due to chemical reactions, as they are included in reactive force fields [27][28][29], are not contained in the model, but SD_TRIM_SP has the advantage to allow for the simulation of high fluences up in the 1018 ions/cm2 range, i.e
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Published 17 Nov 2016

Multiscale modeling of lithium ion batteries: thermal aspects

  • Arnulf Latz and
  • Jochen Zausch

Beilstein J. Nanotechnol. 2015, 6, 987–1007, doi:10.3762/bjnano.6.102

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  • utilizing classical force fields to continuum theories. But even within continuum theories it is for practical reasons important to distinguish between microstructure-resolved and porous-electrode theories to develop consistent theories for both scales. The knowledge of the material parameters and their
  • ) simulations once the force fields for the interaction between the molecules are known [14][15]. Information on interface properties can be obtained from MD simulations and from DFT simulations [15]. MD simulations are especially relevant to study the solvation properties of the ions [15][16][17], which are
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Published 20 Apr 2015

Nanoparticle shapes by using Wulff constructions and first-principles calculations

  • Georgios D. Barmparis,
  • Zbigniew Lodziana,
  • Nuria Lopez and
  • Ioannis N. Remediakis

Beilstein J. Nanotechnol. 2015, 6, 361–368, doi:10.3762/bjnano.6.35

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  • of atoms are presently limited to atoms with few valence electrons, such as simple metals or semiconductors [50][51][52]. Late transition metals are typically simulated by using advanced force-fields or other approaches [53][54][55]. The advantage of the atomistic Wulff construction is that one
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Published 03 Feb 2015

Multifunctional layered magnetic composites

  • Maria Siglreitmeier,
  • Baohu Wu,
  • Tina Kollmann,
  • Martin Neubauer,
  • Gergely Nagy,
  • Dietmar Schwahn,
  • Vitaliy Pipich,
  • Damien Faivre,
  • Dirk Zahn,
  • Andreas Fery and
  • Helmut Cölfen

Beilstein J. Nanotechnol. 2015, 6, 134–148, doi:10.3762/bjnano.6.13

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  • in aqueous solution by using empirical force fields [44][45][63][64]. Investigation of biologically designed metal-specific chelators for potential metal recovery and waste remediation applications [65], and the Kawska–Zahn docking procedure were described previously [43]. Along this line, ion
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Published 12 Jan 2015

Double layer effects in a model of proton discharge on charged electrodes

  • Johannes Wiebe and
  • Eckhard Spohr

Beilstein J. Nanotechnol. 2014, 5, 973–982, doi:10.3762/bjnano.5.111

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  • reactive force field procedure to statistically study the large number of proton transfer pathways by developing empirical valence bond (EVB) force fields for Grotthuss style proton migration and proton discharge at the water/Pt(111) [16][17] and the water/Ag(111) interface [18]. The first EVB models were
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Published 07 Jul 2014

Molecular dynamics simulations of mechanical failure in polymorphic arrangements of amyloid fibrils containing structural defects

  • Hlengisizwe Ndlovu,
  • Alison E. Ashcroft,
  • Sheena E. Radford and
  • Sarah A. Harris

Beilstein J. Nanotechnol. 2013, 4, 429–440, doi:10.3762/bjnano.4.50

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  • modifications. Molecular dynamics simulations Molecular dynamics simulations were run using AMBER9 [35] and NAMD2.7b1 [36] simulation packages, with the all atom AMBER99SB [37] and the CHARMM22/CMAP [38] force fields used, respectively. All models were explicitly solvated in a periodic water-box of TIP3
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Published 04 Jul 2013

Influence of the solvent on the stability of bis(terpyridine) structures on graphite

  • Daniela Künzel and
  • Axel Groß

Beilstein J. Nanotechnol. 2013, 4, 269–277, doi:10.3762/bjnano.4.29

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  • model system, the solvation of a bis(terpyridine) isomer in water and 1,2,4-trichlorobenzene was studied with an explicit solvation model. The inclusion of solvation has a noticeable effect on adsorption energies. Although the results of the various considered force fields differ quite significantly
  • of the considered systems and the requirement to perform thermal averages make first-principles electronic-structure calculations computationally prohibitively expensive. Therefore we employed classical force fields as included in the Forcite module of the Accelrys’ Materials Studio package to
  • describe the interaction between adsorbate, substrate and solvent. It is true that the force fields in this package tend to overestimate BTP adsorption energies on graphite [12]. Still, trends in the stability of BTP stuctures on graphite as a function of the environment should still be reproduced. As a
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Published 22 Apr 2013
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  • out integration of the force gradient to calculate the forces as a function of the xyz-coordinates. This results in three dimensional force fields, as they are usually obtained in time-consuming volume-scanning applications [33][34]. Although the approach described in [31][32] is not yet
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Published 18 Mar 2013

Advanced atomic force microscopy techniques

  • Thilo Glatzel,
  • Hendrik Hölscher,
  • Thomas Schimmel,
  • Mehmet Z. Baykara,
  • Udo D. Schwarz and
  • Ricardo Garcia

Beilstein J. Nanotechnol. 2012, 3, 893–894, doi:10.3762/bjnano.3.99

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  • . Data acquisition times have already reached the millisecond range, enabling the visualization of the dynamic behavior of biological molecules and cells. Other recent accomplishments include imaging of organic molecules with unprecedented resolution, full three-dimensional mapping of surface force
  • fields, and the imaging and discrimination of individual chemical bonds. The development of advanced techniques is the focus of this Thematic Series, following the Thematic Series “Scanning probe microscopy and related techniques” edited by Ernst Meyer and the Thematic Series “Noncontact atomic force
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Published 21 Dec 2012

Probing three-dimensional surface force fields with atomic resolution: Measurement strategies, limitations, and artifact reduction

  • Mehmet Z. Baykara,
  • Omur E. Dagdeviren,
  • Todd C. Schwendemann,
  • Harry Mönig,
  • Eric I. Altman and
  • Udo D. Schwarz

Beilstein J. Nanotechnol. 2012, 3, 637–650, doi:10.3762/bjnano.3.73

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  • interpretation. In this paper, we analyze their impact on the acquired data, compare different methods to record atomic-resolution surface force fields, and determine the approaches that suffer the least from the associated artifacts. The related discussion underscores the idea that since force fields recorded
  • sample surface. Force fields have now been recorded on NiO(001) [10][12][13], MgO/Ag(001) [14], NaCl(001) [15][16], Si(111)-(7×7) [17][18][19], HOPG [20][21], KBr(001) [9][22][23], Cu(111) [24], and CaCO3() [25] surfaces, as well as single molecules of PTCDA [26][27], pentacene [28], CO [29], C60 [30
  • –mica interface [35]. The methods most frequently reported in the literature to record two- and three-dimensional force fields above sample surfaces may be divided into two general categories (Figure 1): 1) The curve-by-curve method, in which individual curves of frequency shift versus tip–sample
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Published 11 Sep 2012

Models of the interaction of metal tips with insulating surfaces

  • Thomas Trevethan,
  • Matthew Watkins and
  • Alexander L. Shluger

Beilstein J. Nanotechnol. 2012, 3, 329–335, doi:10.3762/bjnano.3.37

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  • tip–surface combinations, the calculated force fields would result in the anions being imaged as prominent protrusions in a constant-frequency-shift image of the surfaces. To demonstrate this, and show the extent of typical atomic scale corrugation, we simulated the imaging of the NaCl surface with
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Published 13 Apr 2012

Graphite, graphene on SiC, and graphene nanoribbons: Calculated images with a numerical FM-AFM

  • Fabien Castanié,
  • Laurent Nony,
  • Sébastien Gauthier and
  • Xavier Bouju

Beilstein J. Nanotechnol. 2012, 3, 301–311, doi:10.3762/bjnano.3.34

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  • future. It should be mentioned also that when the tip interacts chemically with the substrate through bond creation between the tip apex atom and surface atoms, the choice of the force-field method may be difficult to justify. In that case, although reactive force fields exist [89][90][91] and may be
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Published 02 Apr 2012

Noncontact atomic force microscopy

  • Udo D. Schwarz

Beilstein J. Nanotechnol. 2012, 3, 172–173, doi:10.3762/bjnano.3.17

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  • conference from this series was held in Lindau, Germany, from September 18–22, 2011. Once again, substantial progress was presented; NC-AFM is now able to quantitatively map three-dimensional force fields of surfaces with atomic resolution in ultrahigh vacuum as well as in liquids, and methodological
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Published 29 Feb 2012
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