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

• under supercritical conditions, affording an improved reactivity, polarity and solubility, thus enhancing its catalytic activity and selectivity [29][32]. Ceria shows both acidic and basic properties, which are important for its reactivity as a catalyst [29]. In addition, it is known that even though

How to remove the influence of trace water from the absorption spectra of SWNTs dispersed in ionic liquids

• Juan Yang,
• Daqi Zhang and
• Yan Li

Beilstein J. Nanotechnol. 2011, 2, 653–658, doi:10.3762/bjnano.2.69

• investigation of the properties and applications of SWNTs. As it is well known that ILs are hygroscopic and that the amount of water absorbed in ILs can significantly affect the physical properties, such as polarity, viscosity, conductivity, and solubility [19][20][21], much research [21][22] have been carried

Determination of object position, vortex shedding frequency and flow velocity using artificial lateral line canals

• Adrian Klein and
• Horst Bleckmann

Beilstein J. Nanotechnol. 2011, 2, 276–283, doi:10.3762/bjnano.2.32

• local flow velocity. Unlike sensors based on hot-wire anemometry, these sensors were directional like lateral line neuromasts, i.e., along their dominant axis they responded to water flow in both directions with equal sensitivity but with opposite polarity. The detection limit for water flow was 100 μm

Recrystallization of tubules from natural lotus (Nelumbo nucifera) wax on a Au(111) surface

• Sujit Kumar Dora and
• Klaus Wandelt

Beilstein J. Nanotechnol. 2011, 2, 261–267, doi:10.3762/bjnano.2.30

• HOPG (non-polar) to horizontally oriented tubules on polar substrates, e.g., silicon, alumina, or glass, they concluded that surface polarity is responsible for tubule orientation. They also demonstrated an increase in the hydrophobicity of the HOPG surface covered with tubules by measuring the contact

• we would also like to refer to the orientation of wax tubules found in previous studies of the self-assembly of natural nonacosan-10-ol wax on different substrates. Jetter and co-workers [2] showed that substrate polarity and roughness play no role in tubule crystallization by demonstrating a

• ] demonstrated the effect of substrate polarity on the tubule growth by showing a vertical orientation on HOPG and a horizontal orientation on silicon and alumina. However, in our study by combining various properties (e.g., polarity, crystallinity) together at two different surfaces we have demonstrated that