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Search for "multilayers" in Full Text gives 115 result(s) in Beilstein Journal of Nanotechnology.

The role of electron-stimulated desorption in focused electron beam induced deposition

  • Willem F. van Dorp,
  • Thomas W. Hansen,
  • Jakob B. Wagner and
  • Jeff T. M. De Hosson

Beilstein J. Nanotechnol. 2013, 4, 474–480, doi:10.3762/bjnano.4.56

Graphical Abstract
  • (TPD) measurements is 53.8 kJ/mol or 0.56 eV (for desorption from multilayers of W(CO)6) [24]. It is observed that the values found in the FEBIP experiments are lower by a factor of 2.5–3.0. A possible explanation for this difference is the fact that the desorption energy is substrate-dependent. The
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Published 14 Aug 2013

Micro- and nanoscale electrical characterization of large-area graphene transferred to functional substrates

  • Gabriele Fisichella,
  • Salvatore Di Franco,
  • Patrick Fiorenza,
  • Raffaella Lo Nigro,
  • Fabrizio Roccaforte,
  • Cristina Tudisco,
  • Guido G. Condorelli,
  • Nicolò Piluso,
  • Noemi Spartà,
  • Stella Lo Verso,
  • Corrado Accardi,
  • Cristina Tringali,
  • Sebastiano Ravesi and
  • Filippo Giannazzo

Beilstein J. Nanotechnol. 2013, 4, 234–242, doi:10.3762/bjnano.4.24

Graphical Abstract
  • is reported, showing the typical size of Cu grains, ranging from about 20 to 200 μm. The graphene membrane, uniformly covering the Cu foil, is mostly composed of a single layer of graphene (over 90% of the surface area), while bilayers or multilayers can be typically found at Cu grain boundaries. A
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Published 02 Apr 2013

Hydrogen-plasma-induced magnetocrystalline anisotropy ordering in self-assembled magnetic nanoparticle monolayers

  • Alexander Weddemann,
  • Judith Meyer,
  • Anna Regtmeier,
  • Irina Janzen,
  • Dieter Akemeier and
  • Andreas Hütten

Beilstein J. Nanotechnol. 2013, 4, 164–172, doi:10.3762/bjnano.4.16

Graphical Abstract
  • . Finally, (d) a small degree of the sample area is not covered by a monolayer, but multilayers/particle clusters can be found instead. Even though they are only present on a very low area ratio, they may still contain a high number of particles. This particularity diminishes the observed effects and
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Published 04 Mar 2013

Tuning the properties of magnetic thin films by interaction with periodic nanostructures

  • Ulf Wiedwald,
  • Felix Haering,
  • Stefan Nau,
  • Carsten Schulze,
  • Herbert Schletter,
  • Denys Makarov,
  • Alfred Plettl,
  • Karsten Kuepper,
  • Manfred Albrecht,
  • Johannes Boneberg and
  • Paul Ziemann

Beilstein J. Nanotechnol. 2012, 3, 831–842, doi:10.3762/bjnano.3.93

Graphical Abstract
  • present work. We employ preparation routes that are based on (i) self-assembly of Au nanoparticles and (ii) homogeneous size-reduction of self-assembled polystyrene particles. On such non-close-packed nanostructures thin Fe films or Co/Pt multilayers are grown with in-plane and out-of-plane easy axis of
  • of Co/Pt multilayers with out-of-plane anisotropy deposited on a more densely packed array of Au nanoparticles. Results and Discussion Preparation of percolated magnetic thin films Percolated magnetic thin films have been prepared by various techniques [15][16]. One necessary requirement is a
  • evaporation (Co/Pt multilayers). For preparation details see, e.g., [25][26]. Panels (c) and (d) in Figure 3 show top-view scanning electron microscopy (SEM) images of Fe films (thickness t = 11 nm) deposited on top of d = 35 ± 8 nm and d = 50 ± 8 nm particles at a distance of a = 95 ± 7 nm, respectively
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Published 07 Dec 2012

Growth behaviour and mechanical properties of PLL/HA multilayer films studied by AFM

  • Cagri Üzüm,
  • Johannes Hellwig,
  • Narayanan Madaboosi,
  • Dmitry Volodkin and
  • Regine von Klitzing

Beilstein J. Nanotechnol. 2012, 3, 778–788, doi:10.3762/bjnano.3.87

Graphical Abstract
  • measurements show that PLL/HA films have a viscoelastic behaviour, regardless of their thickness. If indentation is performed several times at the same lateral position on the film, a viscous/plastic deformation takes place. Keywords: atomic force microscopy; polyelectrolyte multilayers; stress relaxation
  • ; viscoelasticity; Young’s modulus; Introduction Polyelectrolyte multilayers (PEMs) have been studied intensely for the past two decades [1][2]. Despite their complex structure and wide range of applicability, PEMs can be prepared simply by alternating deposition of polycations and polyanions by dipping/spraying a
  • similar multilayers [4][5][23][32], crosslinked PDMS films [47], human platelets [48], agar gel [49] and cancer cells [13][14]. From 100 nm/s to 6000 nm/s, τ1 continuously decreases from 2.17 s to 0.18 s and τ2 decreases from 9.03 s to 1.20 s. This decrease means that the film is less viscous when it is
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Published 21 Nov 2012

Assessing the plasmonics of gold nano-triangles with higher order laser modes

  • Laura E. Hennemann,
  • Andreas Kolloch,
  • Andreas Kern,
  • Josip Mihaljevic,
  • Johannes Boneberg,
  • Paul Leiderer,
  • Alfred J. Meixner and
  • Dai Zhang

Beilstein J. Nanotechnol. 2012, 3, 674–683, doi:10.3762/bjnano.3.77

Graphical Abstract
  • . Plenty of water was used to rinse the surface in order to get rid of the physically adsorbed multilayers. Results and Discussion 1. Topography Investigating the triangle arrays with the shear-force topographical method implemented in our setup [22] and SEM characterisations, we find well aligned
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Published 04 Oct 2012

Ordered arrays of nanoporous gold nanoparticles

  • Dong Wang,
  • Ran Ji,
  • Arne Albrecht and
  • Peter Schaaf

Beilstein J. Nanotechnol. 2012, 3, 651–657, doi:10.3762/bjnano.3.74

Graphical Abstract
  • . Data for the ordered array of nanoporous gold nanoparticles formed from the 15 nm Au/30 nm Ag multilayers on the prepatterned substrate (a, c, and e) and the irregularly distributed nanoporous gold nanoparticles formed from the 15 nm Au/20 nm Ag bilayers on the flat substrate (b, d, and f). (a, b) SEM
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Published 13 Sep 2012

Polymer blend lithography: A versatile method to fabricate nanopatterned self-assembled monolayers

  • Cheng Huang,
  • Markus Moosmann,
  • Jiehong Jin,
  • Tobias Heiler,
  • Stefan Walheim and
  • Thomas Schimmel

Beilstein J. Nanotechnol. 2012, 3, 620–628, doi:10.3762/bjnano.3.71

Graphical Abstract
  • applications [65][66][67]. Silane-based follow-up reactions can be used to produce silane multilayers [68], which only grow in the predefined areas. This type of SAM template has also potential applications for the selective growth of titanium oxide or graphene on surfaces [69][70], or in cell-adhesion studies
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Published 04 Sep 2012

Macromolecular shape and interactions in layer-by-layer assemblies within cylindrical nanopores

  • Thomas D. Lazzara,
  • K. H. Aaron Lau,
  • Wolfgang Knoll,
  • Andreas Janshoff and
  • Claudia Steinem

Beilstein J. Nanotechnol. 2012, 3, 475–484, doi:10.3762/bjnano.3.54

Graphical Abstract
  • pores, with d0 = 25–30 nm. For a reasonable estimation of deff,n_max, the actual volume occupied by a macromolecular assembly must be taken into consideration. The results clearly show that electrostatic LbL allowed for compact macromolecular layers, whereas proteins formed loosely packed multilayers
  • . Results and Discussion For our studies on LbL deposition of globular proteins and linear-PE multilayers, we used the nanopores of anodic aluminum oxide (AAO). Scheme 1 (top) shows the general expected internal structure after LbL deposition in AAO nanopores. A two-step anodization process of the AAO
  • macromolecular species on flat surfaces with that in nanopores. LbL deposition on flat surfaces was measured by surface plasmon resonance (SPR) by using gold substrates with a negatively charged self-assembled monolayer of mercaptohexadecanoic acid. The formation of protein multilayers was achieved by using
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Published 28 Jun 2012

Molecular-resolution imaging of pentacene on KCl(001)

  • Julia L. Neff,
  • Jan Götzen,
  • Enhui Li,
  • Michael Marz and
  • Regina Hoffmann-Vogel

Beilstein J. Nanotechnol. 2012, 3, 186–191, doi:10.3762/bjnano.3.20

Graphical Abstract
  • -lying molecules. These order in a commensurable superstructure with respect to the surface pattern. The growth of multilayers depends on the structural details of the substrate. A recent SFM study has shown the morphology of thin pentacene films on Cu(111) with molecular resolution [25]. On graphite
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Published 29 Feb 2012

Mesoporous MgTa2O6 thin films with enhanced photocatalytic activity: On the interplay between crystallinity and mesostructure

  • Jin-Ming Wu,
  • Igor Djerdj,
  • Till von Graberg and
  • Bernd M. Smarsly

Beilstein J. Nanotechnol. 2012, 3, 123–133, doi:10.3762/bjnano.3.13

Graphical Abstract
  • deposition did not disturb the mesostructure. For comparison, multilayers of nontemplated films were studied by nitrogen physisorption. For such a PIB6000-templated mesoporous multilayer MgTa2O6 film with four single layers a BET surface area of ca. 260 m2 cm−3 was observed (after heat treatment at 790 °C
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Published 13 Feb 2012

Surface functionalization of aluminosilicate nanotubes with organic molecules

  • Wei Ma,
  • Weng On Yah,
  • Hideyuki Otsuka and
  • Atsushi Takahara

Beilstein J. Nanotechnol. 2012, 3, 82–100, doi:10.3762/bjnano.3.10

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  • water content increases and there is a risk of formation of multilayers due to the uncontrolled polymerization of the multifunctional organosilanes [17][18]. Phosphorus derivatives are much less sensitive to nucleophilic substitution than silicon derivatives are, because phosphorus has a higher
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Published 02 Feb 2012

Nanoscaled alloy formation from self-assembled elemental Co nanoparticles on top of Pt films

  • Luyang Han,
  • Ulf Wiedwald,
  • Johannes Biskupek,
  • Kai Fauth,
  • Ute Kaiser and
  • Paul Ziemann

Beilstein J. Nanotechnol. 2011, 2, 473–485, doi:10.3762/bjnano.2.51

Graphical Abstract
  • and, thus, the largest orbital moment of resulting chemically ordered CoPt thin films [16] or Co/Pt multilayers [34] to be perpendicular to the Pt atomic layers. Indeed, within the error bars, the observed maximum of µL/µSeff = 0.15 is found rising towards the expectations for both, ordered CoPt (µL
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Published 23 Aug 2011

Effect of large mechanical stress on the magnetic properties of embedded Fe nanoparticles

  • Srinivasa Saranu,
  • Sören Selve,
  • Ute Kaiser,
  • Luyang Han,
  • Ulf Wiedwald,
  • Paul Ziemann and
  • Ulrich Herr

Beilstein J. Nanotechnol. 2011, 2, 268–275, doi:10.3762/bjnano.2.31

Graphical Abstract
  • % have been achieved in Co/Pd multilayers with perpendicular anisotropy [11]. In these materials, which are interesting as potential perpendicular recording media, the interface anisotropy energy may exceed the shape anisotropy for short multilayer periodicities and cause the magnetization to align
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Published 01 Jun 2011

Magnetic interactions between nanoparticles

  • Steen Mørup,
  • Mikkel Fougt Hansen and
  • Cathrine Frandsen

Beilstein J. Nanotechnol. 2010, 1, 182–190, doi:10.3762/bjnano.1.22

Graphical Abstract
  • ferromagnetic cobalt covered by a shell of antiferromagnetic CoO [4]: This effect is nowadays utilized in read heads in computer hard disk drives. In a neutron study of Fe3O4/CoO multilayers, van der Zaag et al. [5] found that the Néel temperature of CoO was enhanced due to the exchange interaction with
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Published 28 Dec 2010
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