Self-assembled monolayers and titanium dioxide: From surface patterning to potential applications

• Yaron Paz

Beilstein J. Nanotechnol. 2011, 2, 845–861, doi:10.3762/bjnano.2.94

• utilization of systems comprising SAMs and TiO2 for a variety of applications. The following section discusses the main applications presented so far. TiO2-SAMs in electronic devices The large dielectric constant k of TiO2 (25 < k < 30) compared with that of silica (k = 3.9), as well as its refractory

• properties, suggest its use in MOSFET technology [91]. In that respect, it is interesting to mention that the dielectric constant of amorphous TiO2 grown on patterned OTS from titanic acid (H2TiO3) [92] was estimated to be 63 at 100 kHz, significantly larger than the reported values of 22 measured for

• in the dielectric constant as a function of frequency (from k = 160 at 1 kHz to k = 23 at 1 mHz) [92]. These were explained by the presence of interface states and impurities such as OH– and H2O in the film. Still, well-behaved MOSFET transistors with a TiO2 gate oxide were demonstrated already in

Template-assisted formation of microsized nanocrystalline CeO₂ tubes and their catalytic performance in the carboxylation of methanol

• Jörg J. Schneider,
• Meike Naumann,
• Christian Schäfer,
• Armin Brandner,
• Heiko J. Hofmann and
• Peter Claus

Beilstein J. Nanotechnol. 2011, 2, 776–784, doi:10.3762/bjnano.2.86

• diesel fuel (for particle emission decrease), and also a solvent [6][25][26][27]. Owing to its low toxicity, versatile reactivity and high dielectric constant, DMC also attracts interest as an electrolyte in lithium-ion batteries [28]. The formation of DMC by direct methanol carboxylation, however, is

Towards quantitative accuracy in first-principles transport calculations: The GW method applied to alkane/gold junctions

• Mikkel Strange and
• Kristian S. Thygesen

Beilstein J. Nanotechnol. 2011, 2, 746–754, doi:10.3762/bjnano.2.82

• general depends on the dielectric constant of the surface material and the local geometrical shape of the surface. Here we model the Au electrodes as perfect metals. The image potential for a point charge halfway between two metal surfaces separated by a distance L is ≈ 10.0/L (eV·Å) [64]. This predicts

Dynamics of capillary infiltration of liquids into a highly aligned multi-walled carbon nanotube film

• Sławomir Boncel,
• Krzysztof Z. Walczak and
• Krzysztof K. K. Koziol

Beilstein J. Nanotechnol. 2011, 2, 311–317, doi:10.3762/bjnano.2.36

• infiltration of the HACNT film by three different aqueous solutions, characterised by various dielectric constant, namely distilled water (as a reference) (left), saturated saline (centre) and saturated sucrose solution (right). Water and saline solution both formed droplets that slide on the highly

Defects in oxide surfaces studied by atomic force and scanning tunneling microscopy

• Thomas König,
• Georg H. Simon,
• Lars Heinke,
• Leonid Lichtenstein and
• Markus Heyde

Beilstein J. Nanotechnol. 2011, 2, 1–14, doi:10.3762/bjnano.2.1

• relative permittivity or dielectric constant of the medium and z the distance between the charges. The Coulomb force FCoulomb is given by It is well known [12] that for very small amplitudes, the shift of the resonance frequency Δf corresponds to the derivative of the tip-sample forces with respect to z