English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Nowadays nanoelectronics is a very promising and dramati- cally developing field for physics basic research and R&D ac- tivities. The most common material for nanoelectronic compo- nents are the semiconductor nanowires, carbon nanotubes and metal nanowhiskers. There are still many questions about the growth and synthesis of these 1D nanostructures and the true nature of the growth mechanisms is yet undiscovered. There are some growth theories but neither of them can describe the whole growth process without leaving unanswered questions. Nanowires can easily be grown on III-V semiconductor sub- strates. The key is the presence of some catalyst particles. According to one of the growth theories the particles (atoms, molecules) di use into the catalyst particle which is a gold seed with the approximate diameter of 100 nm in our experiments. A crystallization phenomenon occurs after reaching the critical concentration in the gold seed. Consequently a cylinder-shaped nanowire will grow under the gold particle (Tip-type growth). We show a 3D FEM (Finite Element Method) time-dependent model of the gas-gold-substrate system from which we can de- termine the concentration of dissolved matter in the gold par- ticle vs. time. This model is an extended version of previous solid-state di usion (SSD) models. The FEM modelling was performed based on earlier results of TEM (Transmission Elec- tron Microscopy), SEM (Scanning Electron Microscopy) exper- iments and EDS (Energy-Dispersive Spectroscopy) analysis.

1D nanostructures grown on GaAs and InP substrates