Probing three-dimensional surface force fields with atomic resolution: Measurement strategies, limitations, and artifact reduction

• Mehmet Z. Baykara,
• Omur E. Dagdeviren,
• Todd C. Schwendemann,
• Harry Mönig,
• Eric I. Altman and
• Udo D. Schwarz

Beilstein J. Nanotechnol. 2012, 3, 637–650, doi:10.3762/bjnano.3.73

• inability to correct for elastic deformations of the tip apex jeopardizes the reliability of such real-time approaches to drift correction to the extent that it is unclear a priori which approach to drift correction, i.e., real-time or post-acquisition, is superior. The effects of tip asymmetry on simulated

Glassy carbon electrodes modified with multiwalled carbon nanotubes for the determination of ascorbic acid by square-wave voltammetry

• Sushil Kumar and
• Victoria Vicente-Beckett

Beilstein J. Nanotechnol. 2012, 3, 388–396, doi:10.3762/bjnano.3.45

• reliability of the SWV method was validated by conducting parallel experiments based on high-performance liquid chromatography (HPLC) with absorbance detection. The observed mean AA contents of the commercial orange juice samples obtained by the two methods were compared statistically and were found to have

• reports the use of a MWCNT-modified GCE for the direct analysis of ascorbic acid by SWV and the application of the method to the analysis of ascorbic acid in commercial orange-juice products. The reliability of SWV method was validated against HPLC, an independent non-electrochemical analytical technique

• well (96–104%) with the claim on the product label. Recovery test Recovery tests were performed to establish the reliability of the SWV method. The diluted juice samples were spiked with 0.5 mmol AA and analysed. It is seen from Table 2 that, with the exception of juice 3, excellent recoveries of the

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

• of the continuous current–distance measurements (Figure 4). The coincidence demonstrates convincingly the reliability of both experimental approaches chosen. Statistical analysis of I–V curves of molecular junctions Thermal vibrations as well as switching events between different configurations and

• conductance of AC trapped between two gold leads, respectively. The good agreement between the results of the three different experimental approaches indicates the reliability of the measurements as well as the independence of the single-molecule conductance values of the present system from the measurement

• in AC molecular bridges [24]. From a technical point of view, the accessibility and reliability of the low conductance data for the AQ molecular junction also illustrates the high sensitivity of our new MCBJ setup. Figure 8C shows the 1-D conductance histogram of the dihydroanthracene wire AH with a