Adsorption of the ionic liquid [BMP][TFSA] on Au(111) and Ag(111): substrate effects on the structure formation investigated by STM

• Benedikt Uhl,
• Florian Buchner,
• Dorothea Alwast,
• Nadja Wagner and
• R. Jürgen Behm

Beilstein J. Nanotechnol. 2013, 4, 903–918, doi:10.3762/bjnano.4.102

• spectroscopic techniques such as ultraviolet photoelectron spectroscopy (UPS) [15][16], X-ray photoelectron spectroscopy (XPS) [17][18][19][20][21], or temperature programmed desorption (TPD) [22], as well as scanning probe microscopies (scanning tunnelling microscopy (STM) and atomic force microscopy (AFM

Mapping of plasmonic resonances in nanotriangles

• Simon Dickreuter,
• Julia Gleixner,
• Andreas Kolloch,
• Johannes Boneberg,
• Elke Scheer and
• Paul Leiderer

Beilstein J. Nanotechnol. 2013, 4, 588–602, doi:10.3762/bjnano.4.66

• spheres with a diameter of 1.55 µm and had a side length of about 530 nm. Right: Detailed blow-ups of triangles and the Si surface in different states of modification. The radial position of each blow-up is marked in the fluence distribution. It has to be noted that the triangles exhibit two different

• micrographs of a 40 nm Au film on Si, after exposition to a 300 ps laser pulse at 800 nm wavelength. (a) Overview over the ablation spot, (b) and (c) blow-ups of the transition region with two different magnifications. Supporting Information Supporting Information File 62: Line-fit and triangle model

Pure hydrogen low-temperature plasma exposure of HOPG and graphene: Graphane formation?

• Baran Eren,
• Dorothée Hug,
• Laurent Marot,
• Rémy Pawlak,
• Marcin Kisiel,
• Roland Steiner,
• Dominik M. Zumbühl and
• Ernst Meyer

Beilstein J. Nanotechnol. 2012, 3, 852–859, doi:10.3762/bjnano.3.96

• (XPS and UPS) were used to monitor the changes in the core level and valence band structures of the HOPG after plasma exposure and subsequently after soft annealing. After exposure to hydrogen plasma, the core level C 1s spectrum gets broadened due to roughening, whereas it recovers its initial width

• semimetal. The other three peaks lie where the π and σ bands overlap, but they have their contribution mainly from the σ band. After exposure to hydrogen plasma, the UPS spectrum looks very similar to the spectrum obtained 20 years ago by Ugolini et al., where HOPG was exposed to hydrogen ions of a Penning

• structure still consists of carbon rings. Since the UPS spectrum of graphite is highly dependent on the polar angle (i.e., the angle between the entrance slit of the analyzer and surface normal) [35], intensity contributions from different polar angles are smeared out and appear as one broad peak 7 eV below

Low-temperature synthesis of carbon nanotubes on indium tin oxide electrodes for organic solar cells

• Andrea Capasso,
• Luigi Salamandra,
• Aldo Di Carlo,
• John M. Bell and
• Nunzio Motta

Beilstein J. Nanotechnol. 2012, 3, 524–532, doi:10.3762/bjnano.3.60

• measured the WF of the as-created electrode. Kelvin probe and ultraviolet photoelectron spectroscopy (UPS) are the techniques usually employed for this purpose; however, there are substantial differences in how the WF is measured. The Kelvin probe method measures, in air, the difference in WF between a

• millimetric probe and the sample, which can undergo surface reactions with species adsorbed from the environment. Conversely, UPS measures, in ultrahigh vacuum, the lowest WF of a small portion of the surface, usually a few microns in diameter. WF values measured by the Kelvin probe method are often higher

• than those measured by UPS [31], due to the influence of the ambient gases and to the fact that the probe size typically covers an area of few millimeters squared. Therefore, we chose to use the Kelvin probe method as it is able to measure the electrode WF in its working environment, just before the

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

• Fabien Castanie Laurent Nony Sebastien Gauthier Xavier Bouju CEMES-CNRS, Centre d’élaboration des matériaux et d’études structurales, 29 rue Jeanne-Marvig, BP 94347, F-31055 Toulouse Cedex 4, France Université de Toulouse, UPS, 29 rue Jeanne-Marvig, BP 94347, F-31055 Toulouse Cedex 4, France Aix

Octadecyltrichlorosilane (OTS)-coated ionic liquid drops: Micro-reactors for homogenous catalytic reactions at designated interfaces

• Xiaoning Zhang and
• Yuguang Cai

Beilstein J. Nanotechnol. 2012, 3, 33–39, doi:10.3762/bjnano.3.4

• . Thus, we conclude that OTS and the drop surface have the same phase signal. The phase signal acquired during the same scanning line and under the same instrumental set-ups represents the surface identity. Since the OTS background is methyl-terminated, we conclude that the vapor treated [Bmim]Cl drop is

An MCBJ case study: The influence of π-conjugation on the single-molecule conductance at a solid/liquid interface

• Wenjing Hong,
• Hennie Valkenier,
• Gábor Mészáros,
• David Zsolt Manrique,
• Artem Mishchenko,
• Alexander Putz,
• Pavel Moreno García,
• Colin J. Lambert,
• Jan C. Hummelen and
• Thomas Wandlowski

Beilstein J. Nanotechnol. 2011, 2, 699–713, doi:10.3762/bjnano.2.76

• as the position of the EHOMO level. This result is in good agreement with AM1-RHF calculations, performed with Hyperchem Release 7.52, and the level alignment, based on UPS data, of a related AQ-type molecular wire, EHOMO(Hyperchemcorr) = −5.74 eV [14]. The HOMO–LUMO gap is estimated at 2.90 eV from

Charge transfer through single molecule contacts: How reliable are rate descriptions?

• Denis Kast,
• L. Kecke and
• J. Ankerhold

Beilstein J. Nanotechnol. 2011, 2, 416–426, doi:10.3762/bjnano.2.47

• schemes for specific set-ups, generic models reveal the characteristics of transport processes. Particularly appealing are descriptions based on transfer rates successfully used in other contexts such as mesoscopic physics and intramolecular electron transfer. However, a detailed analysis of this scheme

• proper design of molecular junctions to exploit these processes. Information about specific molecular set-ups appears merely in the form of parameters which offer a large degree of flexibility. In general, to attack the respective many body problems, perturbative schemes have been applied, the most

Influence of water on the properties of an Au/Mpy/Pd metal/molecule/metal junction

• Jan Kučera and
• Axel Groß

Beilstein J. Nanotechnol. 2011, 2, 384–393, doi:10.3762/bjnano.2.44

• contacts [2][7][8][9]. The structure of the Pd layers prepared on Au/Mpy and Au/ATP SAMs was recently the subject of several experimental and theoretical studies [7][8][9][10][11][12]. Experimental ultraviolet photoelectron spectroscopy (UPS) revealed a relatively large reorganization of the valence band

• adsorption. In particular we will discuss the character of the palladium local density of states (LDOS) in the presence of water and compare the findings with experimental UPS spectra of the corresponding system. Results and Discussion Before addressing the water adsorption on the Au/Mpy/Pd junction, we will

• a single water molecule on the Au/Mpy/Pd junction. Finally, we compare the calculated total DOS of the palladium monolayer in the presence of various amounts of water with the experimental UPS spectrum of the palladium layer in the Au/Mpy/Pd system [8]. The DOS of the Pd monolayer in the Au/Mpy/Pd

Organic–inorganic nanosystems

• Paul Ziemann

Beilstein J. Nanotechnol. 2011, 2, 363–364, doi:10.3762/bjnano.2.41

• (STS), while for larger coverages standard photoelectron spectroscopies such UPS or XPS – often synchrotron based – also play an important role. This broad spectrum of preparational approaches, analytical tools and sought after functionalities, all related to organic–inorganic nanosystems, are

The description of friction of silicon MEMS with surface roughness: virtues and limitations of a stochastic Prandtl–Tomlinson model and the simulation of vibration-induced friction reduction

• W. Merlijn van Spengen,
• Viviane Turq and
• Joost W. M. Frenken

Beilstein J. Nanotechnol. 2010, 1, 163–171, doi:10.3762/bjnano.1.20

• W. Merlijn van Spengen Viviane Turq Joost W. M. Frenken TU Delft, 3mE-PME, Mekelweg 2, 2628CD Delft, The Netherlands also with Falco Systems, Gelderlandplein 75L, 1082LV, Amsterdam, The Netherlands Université de Toulouse, UPS, INP, Institut Carnot Cirimat, 118, route de Narbonne, F-31062 Toulouse