Growing carbon nanotube nanojunctions on an aluminum substrate

Self-assembled silicon oxide nanojunctions

“…These nanojunctions may be the basic building blocks of integrated optical nanodevices or large-area monolithic integrated nanowire electronics on Si-based readout circuits. It should be mentioned that nanojunctions such as Y type, L type, T type, H type, ribbonlike and cross type have been achieved earlier in nanowires and nanotubes with the help of metallic catalyst [5,6,[24][25][26][27][28][29][30][31][32][33][34][35], while this work represents one of the few obtained without metallic catalyst [36][37][38]. Figure 2(b) is a typical TEM image of silicon oxide nanojunctions.…”

“…In the literature, we note that the nanojunction structure of nanotubes and nanowires has been synthesized earlier. Most of the nanotube and nanowire nanojunction structures are grown by metallic catalyst or nanostructured template-assisted growth [5,6,[24][25][26][27][28][29][30][31][32][33][34][35]. However, these silicon oxide nanojunctions with various shapes reported here are fabricated without metallic catalyst, which may avoid the influence of metallic catalyst on the properties of nanojunctions, especially on the optical property, and make them applicable in the fabrication of optoelectronic devices, nano-interconnections in future integrated nanoscale optical devices, nanosensors, low-loss optical waveguides and so on.…”

The creation of nanojunctions

“…Wang et al observed that several CNTs crossed over each other when a bulk aluminium substrate was used as a catalyst for CNT growth, but the formation of fastenened (stable) multiterminal nanojunctions remained to be debated. 33 Indeed, the multiterminal nanojunctions of CNTs could be rationally designed and fabricated using nanowelding and nanosoldering techniques based on electron beam irradiation or other methods, which will be reviewed in detail in the following sections.…”

How the permutation of edges of a metric graph affects the number of points moving along the edges

“…This means that two graphs have the same number of vertices and set of edge propagation times, but have different order of edges. We apply this approach for a H-junction (see [9]), i.e. a tree graph Γ H , with five edges and six vertices, two of which are inner vertices and four have valence one.…”