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Search for "aligned" in Full Text gives 377 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Self-assembly and spectroscopic fingerprints of photoactive pyrenyl tectons on hBN/Cu(111)

  • Domenik M. Zimmermann,
  • Knud Seufert,
  • Luka Ðorđević,
  • Tobias Hoh,
  • Sushobhan Joshi,
  • Tomas Marangoni,
  • Davide Bonifazi and
  • Willi Auwärter

Beilstein J. Nanotechnol. 2020, 11, 1470–1483, doi:10.3762/bjnano.11.130

Graphical Abstract
  • , matched the submolecular contrast in the STM images, and thus supported this assignment. Based on this comparison, we ruled out strong adsorption-induced deformations of the molecule and concluded that the pyrene core adsorbed mostly flat, i.e., the π-conjugated core aligned parallel to the hBN sheet
  • Figure 4b). These dimers formed rows, where one N atom of each unit was oriented towards the pyrene core of a neighboring dimer. This noncovalent interaction was described by the distance d1 (0.28 ± 0.05 nm, inset of Figure 4b). Multiple rows, aligned in parallel, with a well-defined registry
  • HOMO−1→LUMO/HOMO→LUMO+2 transitions (estimated at λ = 273 nm (4.54 eV), f = 1.10), with the transition dipole moments aligned along the 1- and 6-positions (towards the pyridin-4-ylethynyl termini) and the short molecular axes of the central pyrene core. On the other hand, the tetrapyrenyl transition
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Published 29 Sep 2020

Antimicrobial metal-based nanoparticles: a review on their synthesis, types and antimicrobial action

  • Matías Guerrero Correa,
  • Fernanda B. Martínez,
  • Cristian Patiño Vidal,
  • Camilo Streitt,
  • Juan Escrig and
  • Carol Lopez de Dicastillo

Beilstein J. Nanotechnol. 2020, 11, 1450–1469, doi:10.3762/bjnano.11.129

Graphical Abstract
  • -volume ratio, increasing the surface of the atoms [19]. In addition, when a magnetic field is applied the magnetic moments of these ferromagnetic FeO NPs become aligned. The surface of the SPIONs can be modified to specifically improve their functionality as antimicrobial compounds by increasing their
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Published 25 Sep 2020

Wafer-level integration of self-aligned high aspect ratio silicon 3D structures using the MACE method with Au, Pd, Pt, Cu, and Ir

  • Mathias Franz,
  • Romy Junghans,
  • Paul Schmitt,
  • Adriana Szeghalmi and
  • Stefan E. Schulz

Beilstein J. Nanotechnol. 2020, 11, 1439–1449, doi:10.3762/bjnano.11.128

Graphical Abstract
  • Abstract The wafer-level integration of high aspect ratio silicon nanostructures is an essential part of the fabrication of nanodevices. Metal-assisted chemical etching (MACE) is a promising low-cost and high-volume technique for the generation of vertically aligned silicon nanowires. Noble metal
  • random structures are typically vertically aligned nanowires, also called nanorods. Silicon nanowire arrays can be designed to have a low reflectance of about 1% in a broad spectral range, depending on their geometry. These silicon structures exhibit efficient light trapping because photons are scattered
  • . The selection of the noble metal and the noble metal particle formation process play an important role in the whole integration. The resulting structures range from a rough surface, over sponge-like nanoporous films to vertically aligned nanowires. Depending on the target application one can tune the
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Published 23 Sep 2020

Protruding hydrogen atoms as markers for the molecular orientation of a metallocene

  • Linda Laflör,
  • Michael Reichling and
  • Philipp Rahe

Beilstein J. Nanotechnol. 2020, 11, 1432–1438, doi:10.3762/bjnano.11.127

Graphical Abstract
  • Figure 2e) evolve on one side of a sharp line connecting the weights of the dumbbells. For an interpretation of the NC-AFM contrast, we run simulations based on the probe particle model [23] for three molecules aligned along , each molecule being in the DFT-optimised adsorption geometry geo 1 [22], as
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Published 22 Sep 2020

One-step synthesis of carbon-supported electrocatalysts

  • Sebastian Tigges,
  • Nicolas Wöhrl,
  • Ivan Radev,
  • Ulrich Hagemann,
  • Markus Heidelmann,
  • Thai Binh Nguyen,
  • Stanislav Gorelkov,
  • Stephan Schulz and
  • Axel Lorke

Beilstein J. Nanotechnol. 2020, 11, 1419–1431, doi:10.3762/bjnano.11.126

Graphical Abstract
  • the C-matrix and the Pt-NPs during the process. The carbon support consists of carbon nanowalls (CNWs), which are vertically aligned, multilayer graphene nanosheets [18][19]. The morphology of the CNWs, the amount of platinum loading as well as the size of the platinum NPs can be precisely adjusted
  • by cyclic voltammetry (CV) measurements. Results and Discussion One-step synthesis and its product Platinum acetylacetonate was used as a single-source precursor for the deposition of Pt-NPs embedded in the supporting CNW matrix. CNWs are vertically aligned, graphitic, multilayer carbon sheets, which
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Published 17 Sep 2020

Growth of a self-assembled monolayer decoupled from the substrate: nucleation on-command using buffer layers

  • Robby Reynaerts,
  • Kunal S. Mali and
  • Steven De Feyter

Beilstein J. Nanotechnol. 2020, 11, 1291–1302, doi:10.3762/bjnano.11.113

Graphical Abstract
  • aligned along one of the main symmetry axes of the graphite lattice. The tetradecyloxy chains in the neighboring lamellae are arranged in a tail-to-tail fashion without any interdigitation. The lamellae make an angle of ≈8° with respect to the nearest symmetry axis of graphite. The unit cell parameters of
  • deduced that they are aligned along the n-C50 molecular axis as highlighted by the white dashed arrows which indicate the long molecular axes of the n-C50 and the BA-OC14 molecules (also see Figure S6 in Supporting Information File 1). However, we also discovered that in a few cases the two molecules are
  • not always aligned as is the case in Figure 5a–c. For n-C50, the chosen optimal concentration was 1.0 × 10−4 M, because at this concentration we observed reasonably high average domain size and relatively low dynamics within the n-C50 monolayer. Lowering the concentration of BA-OC14 further (range
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Published 01 Sep 2020

Proximity effect in [Nb(1.5 nm)/Fe(x)]10/Nb(50 nm) superconductor/ferromagnet heterostructures

  • Yury Khaydukov,
  • Sabine Pütter,
  • Laura Guasco,
  • Roman Morari,
  • Gideok Kim,
  • Thomas Keller,
  • Anatolie Sidorenko and
  • Bernhard Keimer

Beilstein J. Nanotechnol. 2020, 11, 1254–1263, doi:10.3762/bjnano.11.109

Graphical Abstract
  • varying the thickness of the N spacer to organize antiparallel (AP), parallel (P) or non-collinearly aligned F layers [27]. Also, the presence of superconducting correlations in the same F/N/F system would favor AP alignment for singlet pairing or a NC configuration to generate a long-range triplet
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Published 21 Aug 2020

Scanning tunneling microscopy and spectroscopy of rubrene on clean and graphene-covered metal surfaces

  • Karl Rothe,
  • Alexander Mehler,
  • Nicolas Néel and
  • Jörg Kröger

Beilstein J. Nanotechnol. 2020, 11, 1157–1167, doi:10.3762/bjnano.11.100

Graphical Abstract
  • energy since the HOMO resonance essentially retains its energy at approx. −0.87 eV. Assuming that C42H28 is weakly coupled to the substrate, its orbital energies are expected to be aligned with the vacuum level [46] and, thus, susceptible to local changes in the work function. Site-specific work
  • C42H28 adsorption on Au(111) with molecular rows being aligned with the separation of the fcc (bright dots) and hcp (dark dots) stacking domains of the surface reconstruction. (a) Spectrum of dI/dV (dots) recorded above a C42H28 phenyl group on Au(111) with the spectroscopic signature of the HOMO
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Published 03 Aug 2020

Electrochemical nanostructuring of (111) oriented GaAs crystals: from porous structures to nanowires

  • Elena I. Monaico,
  • Eduard V. Monaico,
  • Veaceslav V. Ursaki,
  • Shashank Honnali,
  • Vitalie Postolache,
  • Karin Leistner,
  • Kornelius Nielsch and
  • Ion M. Tiginyanu

Beilstein J. Nanotechnol. 2020, 11, 966–975, doi:10.3762/bjnano.11.81

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  • electrochemical etching, to the best of our knowledge, there is only one report on the preparation of high-aspect-ratio vertically aligned GaAs nanowires with a diameter of about 200 nm and a length of 100 µm on GaAs(111)B wafers with a carrier concentration in the range of (1–2) × 1018 cm−3 [27]. Bundles of
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Published 29 Jun 2020

Microwave photon detection by an Al Josephson junction

  • Leonid S. Revin,
  • Andrey L. Pankratov,
  • Anna V. Gordeeva,
  • Anton A. Yablokov,
  • Igor V. Rakut,
  • Victor O. Zbrozhek and
  • Leonid S. Kuzmin

Beilstein J. Nanotechnol. 2020, 11, 960–965, doi:10.3762/bjnano.11.80

Graphical Abstract
  • Following the line proposed in [4], an aluminium Al/AlOx/Al tunnel junction 0.4 × 2 µm2 was fabricated using a self-aligned shadow evaporation technique. Its current–voltage characteristic shown in the inset of Figure 1 (see below) has a well-defined hysteresis. The double voltage gap of the junction is
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Published 23 Jun 2020

Extracting viscoelastic material parameters using an atomic force microscope and static force spectroscopy

  • Cameron H. Parvini,
  • M. A. S. R. Saadi and
  • Santiago D. Solares

Beilstein J. Nanotechnol. 2020, 11, 922–937, doi:10.3762/bjnano.11.77

Graphical Abstract
  • Mucasol, followed by IPA, and then DI water for a duration of 10 min per step. The resonant frequency and spring constant were found to be 68.953 kHz and 1.70 nN/nm, respectively. The curves are aligned as a result of the previously described conditioning steps for each velocity, and are visualized in
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Published 16 Jun 2020

Three-dimensional solvation structure of ethanol on carbonate minerals

  • Hagen Söngen,
  • Ygor Morais Jaques,
  • Peter Spijker,
  • Christoph Marutschke,
  • Stefanie Klassen,
  • Ilka Hermes,
  • Ralf Bechstein,
  • Lidija Zivanovic,
  • John Tracey,
  • Adam S. Foster and
  • Angelika Kühnle

Beilstein J. Nanotechnol. 2020, 11, 891–898, doi:10.3762/bjnano.11.74

Graphical Abstract
  • above the surface (at small z) indicate that the hydroxy group is oriented with the hydrogen towards the surface. The two distinguishable peaks for the carbon atoms following at larger distance from the surface show that the hydrocarbon chains of the molecules are all aligned perpendicular to the
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Published 10 Jun 2020

Transition from freestanding SnO2 nanowires to laterally aligned nanowires with a simulation-based experimental design

  • Jasmin-Clara Bürger,
  • Sebastian Gutsch and
  • Margit Zacharias

Beilstein J. Nanotechnol. 2020, 11, 843–853, doi:10.3762/bjnano.11.69

Graphical Abstract
  • experiments in order to switch freestanding nanowire growth to a laterally aligned growth mode. By means of finite element simulations, we determined that a higher volumetric flow and a reduced process pressure will result in a preferred laterally aligned nanowire growth. Furthermore, increasing the
  • volumetric flow leads to a higher species dilution. Based on our numerical results, we were able to successfully grow laterally aligned SnO2 nanowires out of gold film edges and gold nanoparticles on a-plane sapphire substrates. In our experiments a horizontal 2-zone tube furnace was used. The generation of
  • laterally aligned nanowires, indicating that the nanowire growth takes place in a transient period of the gas exchange. Keywords: finite element method simulation; laterally aligned nanowires; planar growth; tin oxide; vapor–liquid–solid nanowire growth; Introduction Since the first reports in 1964 by
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Published 28 May 2020

Integrated photonics multi-waveguide devices for optical trapping and Raman spectroscopy: design, fabrication and performance demonstration

  • Gyllion B. Loozen,
  • Arnica Karuna,
  • Mohammad M. R. Fanood,
  • Erik Schreuder and
  • Jacob Caro

Beilstein J. Nanotechnol. 2020, 11, 829–842, doi:10.3762/bjnano.11.68

Graphical Abstract
  • input waveguide of the chip using a fiber array unit (FAU) glued to its end. The chip is mounted on a sample holder. The FAU is aligned using manual translation stages for coarse alignment and piezoelectric stages for fine alignment. The polarization of the light coupled out by the fiber is
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Published 27 May 2020

Adsorption behavior of tin phthalocyanine onto the (110) face of rutile TiO2

  • Lukasz Bodek,
  • Mads Engelund,
  • Aleksandra Cebrat and
  • Bartosz Such

Beilstein J. Nanotechnol. 2020, 11, 821–828, doi:10.3762/bjnano.11.67

Graphical Abstract
  • an oxygen row with pyrrole-like subunits located near adjacent titanium rows, while the right Sn-down molecule is adsorbed with its diagonal aligned parallel to the [001] direction on the titanium rows. Sn-up molecules also adsorb over the STM bright surface rows. Approximately 90% of observed SnPc
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Published 26 May 2020

Hexagonal boron nitride: a review of the emerging material platform for single-photon sources and the spin–photon interface

  • Stefania Castelletto,
  • Faraz A. Inam,
  • Shin-ichiro Sato and
  • Alberto Boretti

Beilstein J. Nanotechnol. 2020, 11, 740–769, doi:10.3762/bjnano.11.61

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Published 08 May 2020

A novel dry-blending method to reduce the coefficient of thermal expansion of polymer templates for OTFT electrodes

  • Xiangdong Ye,
  • Bo Tian,
  • Yuxuan Guo,
  • Fan Fan and
  • Anjiang Cai

Beilstein J. Nanotechnol. 2020, 11, 671–677, doi:10.3762/bjnano.11.53

Graphical Abstract
  • aligned [7]. However, the polymer template has a high coefficient of thermal expansion (CTE), resulting in alignment deviations of the OTFT electrodes [8][9]. Currently, one of the measures to reduce the CTE of polymer templates is wet blending, in which the low-CTE nanomaterial is directly incorporated
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Published 20 Apr 2020

Observation of unexpected uniaxial magnetic anisotropy in La2/3Sr1/3MnO3 films by a BaTiO3 overlayer in an artificial multiferroic bilayer

  • John E. Ordóñez,
  • Lorena Marín,
  • Luis A. Rodríguez,
  • Pedro A. Algarabel,
  • José A. Pardo,
  • Roger Guzmán,
  • Luis Morellón,
  • César Magén,
  • Etienne Snoeck,
  • María E. Gómez and
  • Manuel R. Ibarra

Beilstein J. Nanotechnol. 2020, 11, 651–661, doi:10.3762/bjnano.11.51

Graphical Abstract
  • magnetic anisotropy is artificially induced in LSMO films grown on ferroelectric BiFeO3 substrate when the polarization of the FE domains is switched to highly aligned stripe domains, inducing a magnetic easy axis in the FM layer parallel to the polarization direction [32][33]. In all aforementioned cases
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Published 16 Apr 2020

Formation of nanoripples on ZnO flat substrates and nanorods by gas cluster ion bombardment

  • Xiaomei Zeng,
  • Vasiliy Pelenovich,
  • Bin Xing,
  • Rakhim Rakhimov,
  • Wenbin Zuo,
  • Alexander Tolstogouzov,
  • Chuansheng Liu,
  • Dejun Fu and
  • Xiangheng Xiao

Beilstein J. Nanotechnol. 2020, 11, 383–390, doi:10.3762/bjnano.11.29

Graphical Abstract
  • of semiconductor quantum dots [2]. Arrays of metallic nanoparticles or nanowires aligned on dielectric surfaces with nanoripples are ideal for research on plasmonics [3]. Ag nanoparticle arrays created on rippled silicon surfaces have demonstrated excellent sensing of molecules through surface
  • obtain nanorods entirely covered with ripples with the same wavelength it is necessary to grow well-aligned vertical nanorods and rotate the sample around the nanorod axes during off-normal cluster bombardment. Schematic view of the irradiation experiments: (a) for ZnO flat substrates, θ is the variable
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Published 24 Feb 2020

High-performance asymmetric supercapacitor made of NiMoO4 nanorods@Co3O4 on a cellulose-based carbon aerogel

  • Meixia Wang,
  • Jing Zhang,
  • Xibin Yi,
  • Benxue Liu,
  • Xinfu Zhao and
  • Xiaochan Liu

Beilstein J. Nanotechnol. 2020, 11, 240–251, doi:10.3762/bjnano.11.18

Graphical Abstract
  • on the above considerations, we present a simple scalable strategy to fabricate an integrated NiMoO4@Co3O4 hierarchical porous structure aligned on CA, which is derived from a cellulose precursor, to be applied in an advanced asymmetric supercapacitor (ASC). The NiMoO4 nanorods originated from ZIF-67
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Published 21 Jan 2020

Molecular architectonics of DNA for functional nanoarchitectures

  • Debasis Ghosh,
  • Lakshmi P. Datta and
  • Thimmaiah Govindaraju

Beilstein J. Nanotechnol. 2020, 11, 124–140, doi:10.3762/bjnano.11.11

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  • binary self-assembly between the anthracene derivatives and 20-meric oligodeoxyadenylic acid where the transition dipolar axis of the anthracene derivatives was aligned in a head-to-tail fashion. The UV–vis and CD spectroscopy data showed cooperative changes in the binary self-assembly in response to the
  • of the advantages of this system was that the DNA–multichromophore organization could be aligned vertically over the gold electrode, which facilitated exothermic charge separation and suppressesed the ground-state charge transfer (CT) complexation between DPP and NDI, followed by the generation of a
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Published 09 Jan 2020

Antimony deposition onto Au(111) and insertion of Mg

  • Lingxing Zan,
  • Da Xing,
  • Abdelaziz Ali Abd-El-Latif and
  • Helmut Baltruschat

Beilstein J. Nanotechnol. 2019, 10, 2541–2552, doi:10.3762/bjnano.10.245

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  • epitaxial 2D growth occurs to form the row structure with the width of ≈2.4 or ≈3.2 nm and the height of 0.35 nm. The angle between the two different oriented domains is around 120°, which suggests that they are probably aligned along the densely packed (111) rows of the substrate. Some vacancies appeared
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Published 18 Dec 2019

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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  • silicon and oxygen increases. It should be noted that the concentrations become equal at around 40 atom %. The width of the transition region is about 20 nm, which can be estimated as the thickness of the shell of the nanoparticle, where the concentration of the elements is aligned. Figure 8 shows a
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Published 13 Dec 2019

Mobility of charge carriers in self-assembled monolayers

  • Zhihua Fu,
  • Tatjana Ladnorg,
  • Hartmut Gliemann,
  • Alexander Welle,
  • Asif Bashir,
  • Michael Rohwerder,
  • Qiang Zhang,
  • Björn Schüpbach,
  • Andreas Terfort and
  • Christof Wöll

Beilstein J. Nanotechnol. 2019, 10, 2449–2458, doi:10.3762/bjnano.10.235

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  • leaf-like structure grow together gradually and finally produce the homogeneous PAT SAMs. The molecules in the closed homogeneous PAT SAMs line up and are well aligned within a domain (Figure 1). This observation confirms a previous report on anthracene-based SAMs made from a different anthracenethiol
  • lines in the topography image of (c) labeled with 1 and 2. (e) Structural formula of the compound used to prepare the PAT SAMs, and (f) the schematic side-view illustration of the aligned adjacent molecules in the PAT SAM. (g) A top-view hard sphere structure model of the PAT-SAM. (a) Topography and (b
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Published 11 Dec 2019

Self-assembly of a terbium(III) 1D coordination polymer on mica

  • Quentin Evrard,
  • Giuseppe Cucinotta,
  • Felix Houard,
  • Guillaume Calvez,
  • Yan Suffren,
  • Carole Daiguebonne,
  • Olivier Guillou,
  • Andrea Caneschi,
  • Matteo Mannini and
  • Kevin Bernot

Beilstein J. Nanotechnol. 2019, 10, 2440–2448, doi:10.3762/bjnano.10.234

Graphical Abstract
  • hundreds of nanometers and heights of approximately 1.2 nm can be observed. These dimensions are consistent with those expected for [Tb(hfac)3·2H2O]n chains (see below). These objects are aligned along three preferential directions on the (001) mica surface. The two-dimensional fast Fourier transform (2D
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Published 10 Dec 2019
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