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Search for "computer simulations" in Full Text gives 30 result(s) in Beilstein Journal of Nanotechnology.

Natural nanofibers embedded in the seed mucilage envelope: composite hydrogels with specific adhesive and frictional properties

  • Agnieszka Kreitschitz and
  • Stanislav N. Gorb

Beilstein J. Nanotechnol. 2024, 15, 1603–1618, doi:10.3762/bjnano.15.126

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  • between mucilage and substrate. Also, very recent studies involving computer simulations demonstrated the influence of different temperatures on hydrophobic–polar and hydrogen bond interactions within the mucilage envelope [150]. The adhesive strength is expressed as the maximum force per unit area [29
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Published 13 Dec 2024

Realizing active targeting in cancer nanomedicine with ultrasmall nanoparticles

  • André F. Lima,
  • Giselle Z. Justo and
  • Alioscka A. Sousa

Beilstein J. Nanotechnol. 2024, 15, 1208–1226, doi:10.3762/bjnano.15.98

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  • underlying surface coat and undesired intermolecular interactions on the ligand shell. In this regard, computer simulations emerge as a powerful tool for optimizing the size and composition of usNPs designed for receptor targeting. For example, Häkkinen and colleagues designed a series of 1.7 nm AuNCs
  • functionalized with RGD peptides as targeting ligands along with chemotherapy drugs and inhibitors of signaling pathways [96][97]. Their simulations revealed that the system composition and the peptide/drug ratio critically influenced the targeting ability of the particles. In addition to computer simulations, a
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Published 30 Sep 2024

Level set simulation of focused ion beam sputtering of a multilayer substrate

  • Alexander V. Rumyantsev,
  • Nikolai I. Borgardt,
  • Roman L. Volkov and
  • Yuri A. Chaplygin

Beilstein J. Nanotechnol. 2024, 15, 733–742, doi:10.3762/bjnano.15.61

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  • only possible for shallow structures milled under constant sputtering yield conditions [18][19][20]. For more complex cases, one has to turn to various kinds of computer simulations that considerably facilitate structure fabrication using FIB. For example, surface evolution was studied using segment
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Published 24 Jun 2024

Recent advances in nanoarchitectures of monocrystalline coordination polymers through confined assembly

  • Lingling Xia,
  • Qinyue Wang and
  • Ming Hu

Beilstein J. Nanotechnol. 2022, 13, 763–777, doi:10.3762/bjnano.13.67

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  • building blocks of coordination polymers [94]. Ex situ and in situ characterizations and computer simulations have been employed to investigate and analyze the crystallization processes of several coordination polymers [94][95][96][97]. The results suggest that there are many kinds of prenucleation
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Published 12 Aug 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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  • fundamental mechanisms of electron-induced precursor fragmentation and the corresponding mechanisms of nanostructure formation and growth using FEBID. Until recently, most computer simulations of FEBID and nanostructure growth have been performed using a Monte Carlo approach and diffusion–reaction theory [2
  • dynamics (IDMD) [13], a novel and general methodology for computer simulations of irradiation-driven transformations of complex molecular systems. This approach overcomes the limitations of previously used computational methods and describes FEBID-based nanostructures at the atomistic level by accounting
  • , morphology, size, and metal content of the deposited Pt-containing material are quantitatively analyzed as functions of electron fluence and adsorbate concentration. Computational Methodology Computer simulations of the FEBID process of Pt(PF3)4 have been performed by means of the MBN Explorer software
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Published 13 Oct 2021

Interactions at the cell membrane and pathways of internalization of nano-sized materials for nanomedicine

  • Valentina Francia,
  • Daphne Montizaan and
  • Anna Salvati

Beilstein J. Nanotechnol. 2020, 11, 338–353, doi:10.3762/bjnano.11.25

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  • Section 2.1. Recently, computer simulations and in vitro studies of nanoparticle–membrane interactions have shown that the surface of nanomaterials can in itself induce several changes at the plasma membrane, by determining sol–gel transitions in the lipid bilayer and impairing lipid lateral diffusion
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Published 14 Feb 2020

Rational design of block copolymer self-assemblies in photodynamic therapy

  • Maxime Demazeau,
  • Laure Gibot,
  • Anne-Françoise Mingotaud,
  • Patricia Vicendo,
  • Clément Roux and
  • Barbara Lonetti

Beilstein J. Nanotechnol. 2020, 11, 180–212, doi:10.3762/bjnano.11.15

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Published 15 Jan 2020

Formation of metal/semiconductor Cu–Si composite nanostructures

  • Natalya V. Yumozhapova,
  • Andrey V. Nomoev,
  • Vyacheslav V. Syzrantsev and
  • Erzhena C. Khartaeva

Beilstein J. Nanotechnol. 2019, 10, 2497–2504, doi:10.3762/bjnano.10.240

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  • structure beginning to separate and forming a Janus-like nanoclusters. The results of the experiments and the computer simulations allow for the conclusion that the internal structure of the composite cluster depend on the type of initial objects, silicon concentration in the alloy and cooling rate
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Published 13 Dec 2019

Site-controlled formation of single Si nanocrystals in a buried SiO2 matrix using ion beam mixing

  • Xiaomo Xu,
  • Thomas Prüfer,
  • Daniel Wolf,
  • Hans-Jürgen Engelmann,
  • Lothar Bischoff,
  • René Hübner,
  • Karl-Heinz Heinig,
  • Wolfhard Möller,
  • Stefan Facsko,
  • Johannes von Borany and
  • Gregor Hlawacek

Beilstein J. Nanotechnol. 2018, 9, 2883–2892, doi:10.3762/bjnano.9.267

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  • is supported by computer simulations of the ion beam mixing and phase separation process. Second, a systematic study of Si+ NC formation is reported, to define optimized irradiation and annealing parameters. Third, these parameters are adapted to the FIB approach using the HIM. For this scenario
  • , dynamic binary collision and kinetic Monte Carlo (kMC) computer simulations predict the formation of a chain of single Si NCs due to the strong reduction of the SiO2 volume in which the Si excess is sufficient for NC formation. Finally, a single Si NC embedded in SiO2 is isolated by FIB-based transmission
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Published 16 Nov 2018

Atomic-level characterization and cilostazol affinity of poly(lactic acid) nanoparticles conjugated with differentially charged hydrophilic molecules

  • María Francisca Matus,
  • Martín Ludueña,
  • Cristian Vilos,
  • Iván Palomo and
  • Marcelo M. Mariscal

Beilstein J. Nanotechnol. 2018, 9, 1328–1338, doi:10.3762/bjnano.9.126

Graphical Abstract
  • promising field for numerous diseases and represents the forefront of modern medicine. In the present work, full atomistic computer simulations were applied to study poly(lactic acid) (PLA) nanoparticles conjugated with polyethylene glycol (PEG). The formation of this complex system was simulated using the
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Published 02 May 2018

Stick–slip boundary friction mode as a second-order phase transition with an inhomogeneous distribution of elastic stress in the contact area

  • Iakov A. Lyashenko,
  • Vadym N. Borysiuk and
  • Valentin L. Popov

Beilstein J. Nanotechnol. 2017, 8, 1889–1896, doi:10.3762/bjnano.8.189

Graphical Abstract
  • transition (which follows from the computer simulations [14][15] and experimental investigations [5]), the free-energy density can be written in the form [10]: where T is the temperature of the lubricant; Tc is the critical temperature; εel is the shear component of the elastic stress; α, a and b are
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Published 08 Sep 2017

Optical response of heterogeneous polymer layers containing silver nanostructures

  • Miriam Carlberg,
  • Florent Pourcin,
  • Olivier Margeat,
  • Judikaël Le Rouzo,
  • Gérard Berginc,
  • Rose-Marie Sauvage,
  • Jörg Ackermann and
  • Ludovic Escoubas

Beilstein J. Nanotechnol. 2017, 8, 1065–1072, doi:10.3762/bjnano.8.108

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  • with computer simulations and transmission electron microscopy (TEM) imaging. Spectrophotometer and spectroscopic ellipsometry measurements of the PVP host matrix validated its non-absorbing and transparent properties. Spectroscopic ellipsometry measurements of the heterogeneous layers of nanospheres
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Published 16 May 2017

Investigation of growth dynamics of carbon nanotubes

  • Marianna V. Kharlamova

Beilstein J. Nanotechnol. 2017, 8, 826–856, doi:10.3762/bjnano.8.85

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  • were much longer than those grown in tangential mode. Using Monte Carlo computer simulations, the authors of [103] demonstrated that nanoparticles with low carbon concentration (4%) catalyzed the tangential growth of SWCNTs, where the particle wets the inner wall of nanotube and can be easily
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Published 11 Apr 2017

First examples of organosilica-based ionogels: synthesis and electrochemical behavior

  • Andreas Taubert,
  • Ruben Löbbicke,
  • Barbara Kirchner and
  • Fabrice Leroux

Beilstein J. Nanotechnol. 2017, 8, 736–751, doi:10.3762/bjnano.8.77

Graphical Abstract
  • supported by computer simulations (Figure 15 and Figure 16). The simulation data clearly show that significant proton transfer can occur between many different atoms of both the cations and the anions of the IL. This suggests that other proton-accepting atoms such as the nitrogen atoms in the bridge
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Published 29 Mar 2017

Fundamental properties of high-quality carbon nanofoam: from low to high density

  • Natalie Frese,
  • Shelby Taylor Mitchell,
  • Christof Neumann,
  • Amanda Bowers,
  • Armin Gölzhäuser and
  • Klaus Sattler

Beilstein J. Nanotechnol. 2016, 7, 2065–2073, doi:10.3762/bjnano.7.197

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  • cellular structures, other scaffolds have been suggested in some cases, for example, for gold. Foams of connected gold nanowires have been designed in molecular dynamics computer simulations [8]. Also, for materials such as glass compounds, nanofoam with a three-dimensional scaffold of interconnected
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Published 27 Dec 2016

Coupled molecular and cantilever dynamics model for frequency-modulated atomic force microscopy

  • Michael Klocke and
  • Dietrich E. Wolf

Beilstein J. Nanotechnol. 2016, 7, 708–720, doi:10.3762/bjnano.7.63

Graphical Abstract
  • experimental dissipation rates has remained a challenge [4] in many cases. The detailed reaction path for a given system can be quite complicated, involving different types of hysteresis [5] and additional effects such as lateral tip displacements [6][7]. Computer simulations have been indispensable to
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Published 17 May 2016

Possibilities and limitations of advanced transmission electron microscopy for carbon-based nanomaterials

  • Xiaoxing Ke,
  • Carla Bittencourt and
  • Gustaaf Van Tendeloo

Beilstein J. Nanotechnol. 2015, 6, 1541–1557, doi:10.3762/bjnano.6.158

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  • is presented in Figure 4a,b. Displaced carbon atoms may form adatoms (A) on the lattice. Atomistic computer simulations predict that the reconstruction of the atomic network near vacancies and adatoms is very likely to happen, resulting in an agglomeration of 5- to 8-membered rings [44][45]. As shown
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Published 16 Jul 2015

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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  • order to demonstrate these fundamental differences between microscopic and homogenized models, mostly based on porous electrode theory (we call it the mesoscopic approach), with respect to thermal aspects, we performed numerical computer simulations on a generic model system with two different micro
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Published 20 Apr 2015

Exploring plasmonic coupling in hole-cap arrays

  • Thomas M. Schmidt,
  • Maj Frederiksen,
  • Vladimir Bochenkov and
  • Duncan S. Sutherland

Beilstein J. Nanotechnol. 2015, 6, 1–10, doi:10.3762/bjnano.6.1

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  • Nova 600 NanoLab XHR Magellan scanning electron microscope (SEM) from FEI generally with energies of 1–5 kV and nominal spot size ≈1 nm. Computer simulations of extinction spectra and charge/field plots analysis were carried out using the finite-difference time-domain method (FDTD Solutions, Lumerical
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Published 02 Jan 2015

Dissipation signals due to lateral tip oscillations in FM-AFM

  • Michael Klocke and
  • Dietrich E. Wolf

Beilstein J. Nanotechnol. 2014, 5, 2048–2057, doi:10.3762/bjnano.5.213

Graphical Abstract
  • , for FM-AFM usually much stiffer cantilevers are used (kz ≈ 40 N/m) [34] in order to suppress thermal fluctuations and to increase the robustness with respect to snap into contact. This is not so urgent for computer simulations, where the parameters can be explicitly chosen such that the tip keeps
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Published 10 Nov 2014

Carbon nano-onions (multi-layer fullerenes): chemistry and applications

  • Juergen Bartelmess and
  • Silvia Giordani

Beilstein J. Nanotechnol. 2014, 5, 1980–1998, doi:10.3762/bjnano.5.207

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  • ][78][79][80]. Mechanisms by which CNOs can reduce friction and wear were investigated in greater detail in 2009 by Martin and collaborators in a combined experimental and computational study [81]. Computer simulations suggest that the lubrication of CNOs between two surfaces is caused by rolling
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Published 04 Nov 2014

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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  • thus a (possibly fortuitous) feature of our model, which on average incorporates some of the quantum effects in an empirical way. According to estimates we made in [17] the surface charge densities used in our computer simulations falls within the range of hydrogen underpotential deposition (UPD). In
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Published 07 Jul 2014

Large-scale atomistic and quantum-mechanical simulations of a Nafion membrane: Morphology, proton solvation and charge transport

  • Pavel V. Komarov,
  • Pavel G. Khalatur and
  • Alexei R. Khokhlov

Beilstein J. Nanotechnol. 2013, 4, 567–587, doi:10.3762/bjnano.4.65

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  • computer simulations. Computer simulations are the most consistent theoretical methods as a starting point in understanding such complex systems as PEMs. In principle, Nafion morphologies, which develop as a result of molecular interactions and processing conditions, and other functional properties of PEMs
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Published 26 Sep 2013

Plasticity of nanocrystalline alloys with chemical order: on the strength and ductility of nanocrystalline Ni–Fe

  • Jonathan Schäfer and
  • Karsten Albe

Beilstein J. Nanotechnol. 2013, 4, 542–553, doi:10.3762/bjnano.4.63

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  • atomic scale computer simulations. By using a combination of Monte-Carlo and molecular dynamics methods we find that solutes have an ordering tendency even if grain sizes are in the nanometer regime, where the phase field of the ordered state is widened as compared to larger grain sizes. Tensile testing
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Published 19 Sep 2013

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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  • ][19]. Computer simulations that characterise the mechanical properties of amyloid fibrils have proved useful in both verifying and expanding on the experimental work. Such computational studies have for instance, reported elastic properties of Aβ fibrils comparable to experimental values [20
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Published 04 Jul 2013
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