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Search for "highly oriented pyrolytic graphite (HOPG)" in Full Text gives 43 result(s) in Beilstein Journal of Nanotechnology.

Robust nanobubble and nanodroplet segmentation in atomic force microscope images using the spherical Hough transform

  • Yuliang Wang,
  • Tongda Lu,
  • Xiaolai Li,
  • Shuai Ren and
  • Shusheng Bi

Beilstein J. Nanotechnol. 2017, 8, 2572–2582, doi:10.3762/bjnano.8.257

Graphical Abstract
  • nanostructures on polymer [15] and highly oriented pyrolytic graphite (HOPG) surfaces [16]. In general, NBs and NDs are 100–800 nm in width and 10–100 nm in height. They are generally studied by atomic force microscopes (AFM) due to their high spatial measurement resolution. The morphological characterization of
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Published 01 Dec 2017

Ester formation at the liquid–solid interface

  • Nguyen T. N. Ha,
  • Thiruvancheril G. Gopakumar,
  • Nguyen D. C. Yen,
  • Carola Mende,
  • Lars Smykalla,
  • Maik Schlesinger,
  • Roy Buschbeck,
  • Tobias Rüffer,
  • Heinrich Lang,
  • Michael Mehring and
  • Michael Hietschold

Beilstein J. Nanotechnol. 2017, 8, 2139–2150, doi:10.3762/bjnano.8.213

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  • (undecan-1-ol or decan-1-ol), coadsorbed out of a solution of the acid within the alcohol at the interface of highly oriented pyrolytic graphite (HOPG) (0001) substrate. The monoester was observed promptly after reaching a threshold either related to the increased packing density of the adsorbate layer
  • . Here we present a chemical reaction (esterification) between trimesic acid (benzene-1,3,5-tricarboxylic acid; TMA) dissolved in an alcoholic solvent (undecan-1-ol or decan-1-ol) on a highly oriented pyrolytic graphite (HOPG) (0001) substrate. The reaction proceeds without catalyst and is controlled by
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Published 12 Oct 2017

A systematic study of the controlled generation of crystalline iron oxide nanoparticles on graphene using a chemical etching process

  • Peter Krauß,
  • Jörg Engstler and
  • Jörg J. Schneider

Beilstein J. Nanotechnol. 2017, 8, 2017–2025, doi:10.3762/bjnano.8.202

Graphical Abstract
  • ] and later demonstrated by Geim and Novoselov in 2004 using sophisticated and skillfull mechanical exfoliation of highly oriented pyrolytic graphite (HOPG) [5]. This seminal discovery enabled the research field of two-dimensional materials on a broader scope, leading to the dissemination of several top
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Published 26 Sep 2017

Identifying the nature of surface chemical modification for directed self-assembly of block copolymers

  • Laura Evangelio,
  • Federico Gramazio,
  • Matteo Lorenzoni,
  • Michaela Gorgoi,
  • Francisco Miguel Espinosa,
  • Ricardo García,
  • Francesc Pérez-Murano and
  • Jordi Fraxedas

Beilstein J. Nanotechnol. 2017, 8, 1972–1981, doi:10.3762/bjnano.8.198

Graphical Abstract
  • (continuous red line), after EBL (continuous blue line) and with a freshly cleaved highly-oriented pyrolytic graphite (HOPG) surface (discontinuous black line). The surface modified by EBL shows a relatively large broadening and a strong shift towards lower binding energies, as compared to the sample modified
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Published 21 Sep 2017

Evolution of the graphite surface in phosphoric acid: an AFM and Raman study

  • Rossella Yivlialin,
  • Luigi Brambilla,
  • Gianlorenzo Bussetti,
  • Matteo Tommasini,
  • Andrea Li Bassi,
  • Carlo Spartaco Casari,
  • Matteo Passoni,
  • Franco Ciccacci,
  • Lamberto Duò and
  • Chiara Castiglioni

Beilstein J. Nanotechnol. 2016, 7, 1878–1884, doi:10.3762/bjnano.7.180

Graphical Abstract
  • HOPG intercalation, especially in relation with the exfoliation mechanism. Experimental Sample and electrochemistry As working electrode (WE) Z-grade highly oriented pyrolytic graphite (HOPG, 10 × 10 mm2, Optigraph©) crystal is used inside a three-electrode electrochemical cell. The graphite is
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Published 30 Nov 2016

Optical absorption signature of a self-assembled dye monolayer on graphene

  • Tessnim Sghaier,
  • Sylvain Le Liepvre,
  • Céline Fiorini,
  • Ludovic Douillard and
  • Fabrice Charra

Beilstein J. Nanotechnol. 2016, 7, 862–868, doi:10.3762/bjnano.7.78

Graphical Abstract
  • level of control of the self-assembly geometry is possible by exploiting the interactions between alkyl side chains and the surface of highly oriented pyrolytic graphite (HOPG) [30]. Based on these principles, it has been possible to design molecular building blocks that arrange spontaneously according
  • graphitic substrates, highly oriented pyrolytic graphite (HOPG) and monolayers of CVD graphene transferred either onto fused silica (“optical quartz”) or PET. The resolution of carbon atoms is easily obtained on both systems. On CVD graphene samples, an additional moderate roughness is observed, which is
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Published 14 Jun 2016

X-ray photoelectron spectroscopy of graphitic carbon nanomaterials doped with heteroatoms

  • Toma Susi,
  • Thomas Pichler and
  • Paola Ayala

Beilstein J. Nanotechnol. 2015, 6, 177–192, doi:10.3762/bjnano.6.17

Graphical Abstract
  • the photoemission response of all carbon nanomaterials. A further advantage specific to highly oriented pyrolytic graphite (HOPG) is that it is relatively straightforward to prepare large but extremely pure and uniform samples. As mentioned above, in a metallic system such as graphite, the line shape
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Published 15 Jan 2015

Controlling the dispersion of supported polyoxometalate heterogeneous catalysts: impact of hybridization and the role of hydrophilicity–hydrophobicity balance and supramolecularity

  • Gijo Raj,
  • Colas Swalus,
  • Eglantine Arendt,
  • Pierre Eloy,
  • Michel Devillers and
  • Eric M. Gaigneaux

Beilstein J. Nanotechnol. 2014, 5, 1749–1759, doi:10.3762/bjnano.5.185

Graphical Abstract
  • ) phosphomolybdic [P2Mo18O62]6− anions deposited on mica (hydrophilic), and highly oriented pyrolytic graphite (HOPG) (hydrophobic) surfaces. Next, the supramolecular organization of the organic–inorganic hybrid materials formed from the association of POM anions and dimethyldioctadecylammonium bromide (DODA) is
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Published 10 Oct 2014

Energy dissipation in multifrequency atomic force microscopy

  • Valentina Pukhova,
  • Francesco Banfi and
  • Gabriele Ferrini

Beilstein J. Nanotechnol. 2014, 5, 494–500, doi:10.3762/bjnano.5.57

Graphical Abstract
  • pyrolytic graphite (HOPG) without any external excitation. The experiment is conducted in air, at room temperature (296 K) an a relative humidity of 55%. The temporal trace has been recorded with a digitizing oscilloscope with a vertical resolution of 8-bit, an analog bandwidth of 250 MHz, and a maximum
  • assessing impact phenomena. As an example we will examine the jump-to-contact transition of a cantilever on a graphite substrate. The deflection of a rectangular silicon cantilever is monitored through a beam-deflection system as the cantilever tip approaches a freshly cleaved surface of highly oriented
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Published 17 Apr 2014

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

Graphical Abstract
  • hindered by barriers [6][11]. Recently it was shown by scanning tunneling microscopy (STM) experiments that 3,3′-BTP exhibits a variety of adlayer structures at the interface between highly oriented pyrolytic graphite (HOPG) and the liquid as a function of the concentration in solution [6]. The resulting
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Published 22 Apr 2013

Dimer/tetramer motifs determine amphiphilic hydrazine fibril structures on graphite

  • Loji K. Thomas,
  • Nadine Diek,
  • Uwe Beginn and
  • Michael Reichling

Beilstein J. Nanotechnol. 2012, 3, 658–666, doi:10.3762/bjnano.3.75

Graphical Abstract
  • dimer building blocks for 2CHd-10, but tetramer building blocks for 1CHn-10. It appears that the large-scale morphologies result as a direct consequence of the type of oligomer precursors they form. As a substrate, highly oriented pyrolytic graphite (HOPG) is favoured in STM studies due to its high
  • pyrolytic graphite (HOPG, ZYB grade, SPI supplies, West Chester, PA, USA). First, a suitably dilute concentration for STM imaging was found that leaves fibrils on HOPG without much clustering or bundling. Then, the particular concentration was repeatedly used for obtaining high-resolution STM images. STM
  • -Aldrich Laborchemikalien GmbH, Seelze, Germany) in a dilution series in steps of 1/10. Higher concentrations often exhibit a gel-like character. The solution was usually sonicated or oven-heated to 45–50 °C for five to fifteen minutes before being applied to a freshly cleaved sample of highly oriented
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Published 19 Sep 2012

Structural, electronic and photovoltaic characterization of multiwalled carbon nanotubes grown directly on stainless steel

  • Luca Camilli,
  • Manuela Scarselli,
  • Silvano Del Gobbo,
  • Paola Castrucci,
  • Eric Gautron and
  • Maurizio De Crescenzi

Beilstein J. Nanotechnol. 2012, 3, 360–367, doi:10.3762/bjnano.3.42

Graphical Abstract
  • highly oriented pyrolytic graphite (HOPG). Notably, a broadening of the π-plasmon peak in the case of MWCNTs is evident. In addition, a photocurrent was measured when MWCNTs were airbrushed onto a silicon substrate. External quantum efficiency (EQE) and photocurrent values were reported both in planar
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Published 02 May 2012

Drive-amplitude-modulation atomic force microscopy: From vacuum to liquids

  • Miriam Jaafar,
  • David Martínez-Martín,
  • Mariano Cuenca,
  • John Melcher,
  • Arvind Raman and
  • Julio Gómez-Herrero

Beilstein J. Nanotechnol. 2012, 3, 336–344, doi:10.3762/bjnano.3.38

Graphical Abstract
  • magnitudes grow monotonically with the tip–sample distance. Figure 7b shows this dependence again with the same tip but this time contaminated after scanning a highly oriented pyrolytic graphite (HOPG) substrate with viruses adsorbed on it. While the dissipation is still monotonic, the frequency shift is not
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Published 18 Apr 2012

Direct-write polymer nanolithography in ultra-high vacuum

  • Woo-Kyung Lee,
  • Minchul Yang,
  • Arnaldo R. Laracuente,
  • William P. King,
  • Lloyd J. Whitman and
  • Paul E. Sheehan

Beilstein J. Nanotechnol. 2012, 3, 52–56, doi:10.3762/bjnano.3.6

Graphical Abstract
  • , as illustrated in Figure 4a. Note that the thickness of our films lies intermediate to values reported previously for PDDT on other substrates. Scifo et al. used STM to measure the thickness in UHV of a PDDT film drop cast on highly oriented pyrolytic graphite (HOPG) and reported a film thickness of
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Published 19 Jan 2012

STM study on the self-assembly of oligothiophene-based organic semiconductors

  • Elena Mena-Osteritz,
  • Marta Urdanpilleta,
  • Erwaa El-Hosseiny,
  • Berndt Koslowski,
  • Paul Ziemann and
  • Peter Bäuerle

Beilstein J. Nanotechnol. 2011, 2, 802–808, doi:10.3762/bjnano.2.88

Graphical Abstract
  • compound in 1,2,4-trichlorobenzene was applied onto a freshly cleaved (0001) face of highly oriented pyrolytic graphite (HOPG). Measurements were repeated with different tips and different samples to confirm reproducibility and to ensure that the images were not affected by tip and sample artifacts
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Published 07 Dec 2011

STM visualisation of counterions and the effect of charges on self-assembled monolayers of macrocycles

  • Tibor Kudernac,
  • Natalia Shabelina,
  • Wael Mamdouh,
  • Sigurd Höger and
  • Steven De Feyter

Beilstein J. Nanotechnol. 2011, 2, 674–680, doi:10.3762/bjnano.2.72

Graphical Abstract
  • attention so far, mostly because they could not be visualised by STM [11][12][13][14]. Here, we report on self-assembly of a neutral shape-persistent macrocycle 1 and its charged analogue 2 (Figure 1) at the interface between an organic solvent and highly oriented pyrolytic graphite (HOPG). We demonstrate
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Published 11 Oct 2011

Intermolecular vs molecule–substrate interactions: A combined STM and theoretical study of supramolecular phases on graphene/Ru(0001)

  • Michael Roos,
  • Benedikt Uhl,
  • Daniela Künzel,
  • Harry E. Hoster,
  • Axel Groß and
  • R. Jürgen Behm

Beilstein J. Nanotechnol. 2011, 2, 365–373, doi:10.3762/bjnano.2.42

Graphical Abstract
  • interaction; large organic molecules; substrate–adsorbate interaction; supramolecular structure; Introduction It is well known that the formation of highly ordered 2D supramolecular networks on smooth surfaces, such as metal substrates or highly oriented pyrolytic graphite (HOPG), is mainly governed by the
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Published 12 Jul 2011

Switching adhesion forces by crossing the metal–insulator transition in Magnéli-type vanadium oxide crystals

  • Bert Stegemann,
  • Matthias Klemm,
  • Siegfried Horn and
  • Mathias Woydt

Beilstein J. Nanotechnol. 2011, 2, 59–65, doi:10.3762/bjnano.2.8

Graphical Abstract
  • materials revealed consistent results: Comparative adhesion force measurements of the (0001) basal planes and the (10−10) prism planes of highly oriented pyrolytic graphite (HOPG) and MoS2 also showed that the metallic state lowers the adhesion at the nanoscale [36]. Experimental Vanadium oxide crystal
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Published 27 Jan 2011
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