Analysis of catalyst surface wetting: the early stage of epitaxial germanium nanowire growth

• Owen C. Ernst,
• Felix Lange,
• David Uebel,
• Thomas Teubner and
• Torsten Boeck

Beilstein J. Nanotechnol. 2020, 11, 1371–1380, doi:10.3762/bjnano.11.121

• linked to the wetting layer, which functions as a communication layer between the droplets. This way it promotes material transport and accelerates the occurrence of certain events, such as Ostwald ripening. This argument is also supported by the fact that the droplet diameter values follows a LSW

• on silicon must be stable. This wetting layer can be considered as a mediating communication layer, or as a material transport layer, which enables Ostwald ripening processes to occur. Indeed, the MBE-formed gold droplets on silicon show material fluctuation between the droplets. Here, the increased

• Laplace pressure is not reduced by re-evaporation but by Ostwald ripening, which requires a medium for material transport and has a lower activation energy than evaporation. The monolayer of gold between the droplets represents this medium. In addition, the distribution of the droplet diameter values also

Electromigration-induced directional steps towards the formation of single atomic Ag contacts

• Atasi Chatterjee,
• Christoph Tegenkamp and
• Herbert Pfnür

Beilstein J. Nanotechnol. 2020, 11, 680–687, doi:10.3762/bjnano.11.55

• growth behavior so that they are nanocrystalline with an average grain size between 30 and 50 nm. These grain boundaries turned out to be the main source of lateral resistance [27]. Therefore, the EM-induced material transport is mainly expected to take place at these boundaries. EM at grain boundaries

• wide Ag contact results in clear unidirectional material transport, as seen by the large clusters preferentially formed on the right-hand side of Figure 1b, appearing as white spots. However, a filamentous structure is always formed on the left-hand side, which neither allows one to identify the exact

• high probability of electron scattering at grain boundaries, material transport mainly happens at and across grain boundaries, but not within the homogeneous crystalline material that is typically assumed in most models. Therefore, deviations from these models must be expected. Focussing for the moment

Ion mobility and material transport on KBr in air as a function of the relative humidity

• Dominik J. Kirpal,
• Korbinian Pürckhauer,
• Alfred J. Weymouth and
• Franz J. Giessibl

Beilstein J. Nanotechnol. 2019, 10, 2084–2093, doi:10.3762/bjnano.10.203

• force microscopy; material transport; relative humidity; Introduction Defining surface properties under ambient conditions is challenging as they are heavily influenced by the environment. In general, there are various contributing factors such as temperature, air pressure and air composition

• to “ice-like” [1][5][6][7][8]. The presence of water can have a large influence on the surface, especially for salt crystals. Investigations suggest that the presence of water and, as a consequence, the relative humidity have a direct influence on material transport and step movement [3][7]. The

• amplitude A = 500 pm and a frequency-shift set point of Δf = +10 to +25 Hz. Data and image processing was performed with MATLAB (The MathWorks, Inc.) and WSxM [28]. Results and Discussion Initial experiments with poking holes This experiment shall investigate qualitatively how the material transport rate

Review on optofluidic microreactors for artificial photosynthesis

• Xiaowen Huang,
• Jianchun Wang,
• Tenghao Li,
• Jianmei Wang,
• Min Xu,
• Weixing Yu,
• Abdel El Abed and
• Xuming Zhang

Beilstein J. Nanotechnol. 2018, 9, 30–41, doi:10.3762/bjnano.9.5

• and coenzyme regeneration. NPS is naturally an optofluidic system since the cells (typical size 10 to 100 µm) of green plants, algae, and cyanobacteria enable light capture, biochemical and enzymatic reactions and the related material transport in a microscale, aqueous environment. The long history of

Light-powered, artificial molecular pumps: a minimalistic approach

• Giulio Ragazzon,
• Massimo Baroncini,
• Serena Silvi,
• Margherita Venturi and
• Alberto Credi

Beilstein J. Nanotechnol. 2015, 6, 2096–2104, doi:10.3762/bjnano.6.214

• ]. Indeed, owing to the progress in molecular biology, we know that living beings are endowed with biomolecules that can replicate genetic material, transport substances inside cells or across membranes, and can be switched on and off in response to external stimuli [3]. Other classes of proteins

Purification of ethanol for highly sensitive self-assembly experiments

• Kathrin Barbe,
• Martin Kind,
• Christian Pfeiffer and
• Andreas Terfort

Beilstein J. Nanotechnol. 2014, 5, 1254–1260, doi:10.3762/bjnano.5.139

• the material transport by aerosol formation [42][43]. As can be seen in Figure 3, trace G, ethanol which has been purified by treatment with gold-NP impregnated zeolite and subsequent distillation is the only sample that causes no detectable resistivity change and thus can be assumed to be free from

Simulation of electron transport during electron-beam-induced deposition of nanostructures

• Francesc Salvat-Pujol,
• Harald O. Jeschke and
• Roser Valentí

Beilstein J. Nanotechnol. 2013, 4, 781–792, doi:10.3762/bjnano.4.89

• positive charge in the material and to new particles, thus leading to a “shower” of particles. If an electron crosses a boundary into an adjacent material, its trajectory history is stopped at the other side of the interface and restarted with the new material transport properties. This can be done any